1 /*-
2 * Copyright (c) 1999, 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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: releng/8.2/sys/fs/nwfs/nwfs_vnops.c 187960 2009-01-31 18:06:34Z bz $
33 */
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/namei.h>
37 #include <sys/kernel.h>
38 #include <sys/bio.h>
39 #include <sys/buf.h>
40 #include <sys/fcntl.h>
41 #include <sys/mount.h>
42 #include <sys/unistd.h>
43 #include <sys/vnode.h>
44
45 #include <vm/vm.h>
46 #include <vm/vm_extern.h>
47
48 #include <machine/mutex.h>
49
50 #include <netncp/ncp.h>
51 #include <netncp/ncp_conn.h>
52 #include <netncp/ncp_subr.h>
53 #include <netncp/nwerror.h>
54 #include <netncp/ncp_nls.h>
55
56 #include <fs/nwfs/nwfs.h>
57 #include <fs/nwfs/nwfs_node.h>
58 #include <fs/nwfs/nwfs_subr.h>
59
60 /*
61 * Prototypes for NWFS vnode operations
62 */
63 static vop_create_t nwfs_create;
64 static vop_mknod_t nwfs_mknod;
65 static vop_open_t nwfs_open;
66 static vop_close_t nwfs_close;
67 static vop_access_t nwfs_access;
68 static vop_getattr_t nwfs_getattr;
69 static vop_setattr_t nwfs_setattr;
70 static vop_read_t nwfs_read;
71 static vop_write_t nwfs_write;
72 static vop_fsync_t nwfs_fsync;
73 static vop_remove_t nwfs_remove;
74 static vop_link_t nwfs_link;
75 static vop_lookup_t nwfs_lookup;
76 static vop_rename_t nwfs_rename;
77 static vop_mkdir_t nwfs_mkdir;
78 static vop_rmdir_t nwfs_rmdir;
79 static vop_symlink_t nwfs_symlink;
80 static vop_readdir_t nwfs_readdir;
81 static vop_strategy_t nwfs_strategy;
82 static vop_print_t nwfs_print;
83 static vop_pathconf_t nwfs_pathconf;
84
85 /* Global vfs data structures for nwfs */
86 struct vop_vector nwfs_vnodeops = {
87 .vop_default = &default_vnodeops,
88
89 .vop_access = nwfs_access,
90 .vop_close = nwfs_close,
91 .vop_create = nwfs_create,
92 .vop_fsync = nwfs_fsync,
93 .vop_getattr = nwfs_getattr,
94 .vop_getpages = nwfs_getpages,
95 .vop_inactive = nwfs_inactive,
96 .vop_ioctl = nwfs_ioctl,
97 .vop_link = nwfs_link,
98 .vop_lookup = nwfs_lookup,
99 .vop_mkdir = nwfs_mkdir,
100 .vop_mknod = nwfs_mknod,
101 .vop_open = nwfs_open,
102 .vop_pathconf = nwfs_pathconf,
103 .vop_print = nwfs_print,
104 .vop_putpages = nwfs_putpages,
105 .vop_read = nwfs_read,
106 .vop_readdir = nwfs_readdir,
107 .vop_reclaim = nwfs_reclaim,
108 .vop_remove = nwfs_remove,
109 .vop_rename = nwfs_rename,
110 .vop_rmdir = nwfs_rmdir,
111 .vop_setattr = nwfs_setattr,
112 .vop_strategy = nwfs_strategy,
113 .vop_symlink = nwfs_symlink,
114 .vop_write = nwfs_write,
115 };
116
117 /*
118 * nwfs_access vnode op
119 */
120 static int
121 nwfs_access(ap)
122 struct vop_access_args /* {
123 struct vnode *a_vp;
124 accmode_t a_accmode;
125 struct ucred *a_cred;
126 struct thread *td;
127 } */ *ap;
128 {
129 struct vnode *vp = ap->a_vp;
130 mode_t mpmode;
131 struct nwmount *nmp = VTONWFS(vp);
132
133 NCPVNDEBUG("\n");
134 if ((ap->a_accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
135 switch (vp->v_type) {
136 case VREG: case VDIR: case VLNK:
137 return (EROFS);
138 default:
139 break;
140 }
141 }
142 mpmode = vp->v_type == VREG ? nmp->m.file_mode :
143 nmp->m.dir_mode;
144 return (vaccess(vp->v_type, mpmode, nmp->m.uid,
145 nmp->m.gid, ap->a_accmode, ap->a_cred, NULL));
146 }
147 /*
148 * nwfs_open vnode op
149 */
150 /* ARGSUSED */
151 static int
152 nwfs_open(ap)
153 struct vop_open_args /* {
154 struct vnode *a_vp;
155 int a_mode;
156 struct ucred *a_cred;
157 struct thread *td;
158 } */ *ap;
159 {
160 struct vnode *vp = ap->a_vp;
161 int mode = ap->a_mode;
162 struct nwnode *np = VTONW(vp);
163 struct ncp_open_info no;
164 struct nwmount *nmp = VTONWFS(vp);
165 struct vattr vattr;
166 int error, nwm;
167
168 NCPVNDEBUG("%s,%d\n", np->n_name, np->opened);
169 if (vp->v_type != VREG && vp->v_type != VDIR) {
170 NCPFATAL("open vtype = %d\n", vp->v_type);
171 return (EACCES);
172 }
173 if (vp->v_type == VDIR) return 0; /* nothing to do now */
174 if (np->n_flag & NMODIFIED) {
175 if ((error = nwfs_vinvalbuf(vp, ap->a_td)) == EINTR)
176 return (error);
177 np->n_atime = 0;
178 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
179 if (error) return (error);
180 np->n_mtime = vattr.va_mtime.tv_sec;
181 } else {
182 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
183 if (error) return (error);
184 if (np->n_mtime != vattr.va_mtime.tv_sec) {
185 if ((error = nwfs_vinvalbuf(vp, ap->a_td)) == EINTR)
186 return (error);
187 np->n_mtime = vattr.va_mtime.tv_sec;
188 }
189 }
190 if (np->opened) {
191 np->opened++;
192 return 0;
193 }
194 nwm = AR_READ;
195 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
196 nwm |= AR_WRITE;
197 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN,
198 0, nwm, &no, ap->a_td, ap->a_cred);
199 if (error) {
200 if (mode & FWRITE)
201 return EACCES;
202 nwm = AR_READ;
203 error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 0,
204 nwm, &no, ap->a_td, ap->a_cred);
205 }
206 if (!error) {
207 np->opened++;
208 np->n_fh = no.fh;
209 np->n_origfh = no.origfh;
210 }
211 np->n_atime = 0;
212 return (error);
213 }
214
215 static int
216 nwfs_close(ap)
217 struct vop_close_args /* {
218 struct vnodeop_desc *a_desc;
219 struct vnode *a_vp;
220 int a_fflag;
221 struct ucred *a_cred;
222 struct thread *td;
223 } */ *ap;
224 {
225 struct vnode *vp = ap->a_vp;
226 struct nwnode *np = VTONW(vp);
227 int error;
228
229 NCPVNDEBUG("name=%s,pid=%d,c=%d\n", np->n_name, ap->a_td->td_proc->p_pid,
230 np->opened);
231
232 if (vp->v_type == VDIR) return 0; /* nothing to do now */
233 error = 0;
234 mtx_lock(&vp->v_interlock);
235 if (np->opened == 0) {
236 mtx_unlock(&vp->v_interlock);
237 return 0;
238 }
239 mtx_unlock(&vp->v_interlock);
240 error = nwfs_vinvalbuf(vp, ap->a_td);
241 mtx_lock(&vp->v_interlock);
242 if (np->opened == 0) {
243 mtx_unlock(&vp->v_interlock);
244 return 0;
245 }
246 if (--np->opened == 0) {
247 mtx_unlock(&vp->v_interlock);
248 error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh,
249 ap->a_td, ap->a_cred);
250 } else
251 mtx_unlock(&vp->v_interlock);
252 np->n_atime = 0;
253 return (error);
254 }
255
256 /*
257 * nwfs_getattr call from vfs.
258 */
259 static int
260 nwfs_getattr(ap)
261 struct vop_getattr_args /* {
262 struct vnode *a_vp;
263 struct vattr *a_vap;
264 struct ucred *a_cred;
265 } */ *ap;
266 {
267 struct vnode *vp = ap->a_vp;
268 struct nwnode *np = VTONW(vp);
269 struct vattr *va=ap->a_vap;
270 struct nwmount *nmp = VTONWFS(vp);
271 struct thread *td = curthread;
272 struct nw_entry_info fattr;
273 int error;
274 u_int32_t oldsize;
275
276 NCPVNDEBUG("%lx:%d: '%s' %d\n", (long)vp, nmp->n_volume, np->n_name, (vp->v_vflag & VV_ROOT) != 0);
277 error = nwfs_attr_cachelookup(vp, va);
278 if (!error) return 0;
279 NCPVNDEBUG("not in cache\n");
280 oldsize = np->n_size;
281 if (np->n_flag & NVOLUME) {
282 error = ncp_obtain_info(nmp, np->n_fid.f_id, 0, NULL, &fattr,
283 td, ap->a_cred);
284 } else {
285 error = ncp_obtain_info(nmp, np->n_fid.f_parent, np->n_nmlen,
286 np->n_name, &fattr, td, ap->a_cred);
287 }
288 if (error) {
289 NCPVNDEBUG("error %d\n", error);
290 return error;
291 }
292 nwfs_attr_cacheenter(vp, &fattr);
293 *va = np->n_vattr;
294 if (np->opened)
295 np->n_size = oldsize;
296 return (0);
297 }
298 /*
299 * nwfs_setattr call from vfs.
300 */
301 static int
302 nwfs_setattr(ap)
303 struct vop_setattr_args /* {
304 struct vnode *a_vp;
305 struct vattr *a_vap;
306 struct ucred *a_cred;
307 } */ *ap;
308 {
309 struct vnode *vp = ap->a_vp;
310 struct nwnode *np = VTONW(vp);
311 struct vattr *vap = ap->a_vap;
312 u_quad_t tsize=0;
313 int error = 0;
314
315 NCPVNDEBUG("\n");
316 if (vap->va_flags != VNOVAL)
317 return (EOPNOTSUPP);
318 /*
319 * Disallow write attempts if the filesystem is mounted read-only.
320 */
321 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
322 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
323 vap->va_mode != (mode_t)VNOVAL) &&(vp->v_mount->mnt_flag & MNT_RDONLY))
324 return (EROFS);
325 if (vap->va_size != VNOVAL) {
326 switch (vp->v_type) {
327 case VDIR:
328 return (EISDIR);
329 case VREG:
330 /*
331 * Disallow write attempts if the filesystem is
332 * mounted read-only.
333 */
334 if (vp->v_mount->mnt_flag & MNT_RDONLY)
335 return (EROFS);
336 vnode_pager_setsize(vp, (u_long)vap->va_size);
337 tsize = np->n_size;
338 np->n_size = vap->va_size;
339 break;
340 default:
341 return EINVAL;
342 };
343 }
344 error = ncp_setattr(vp, vap, ap->a_cred, curthread);
345 if (error && vap->va_size != VNOVAL) {
346 np->n_size = tsize;
347 vnode_pager_setsize(vp, (u_long)tsize);
348 }
349 np->n_atime = 0; /* invalidate cache */
350 VOP_GETATTR(vp, vap, ap->a_cred);
351 np->n_mtime = vap->va_mtime.tv_sec;
352 return (0);
353 }
354 /*
355 * nwfs_read call.
356 */
357 static int
358 nwfs_read(ap)
359 struct vop_read_args /* {
360 struct vnode *a_vp;
361 struct uio *a_uio;
362 int a_ioflag;
363 struct ucred *a_cred;
364 } */ *ap;
365 {
366 struct vnode *vp = ap->a_vp;
367 struct uio *uio=ap->a_uio;
368 int error;
369 NCPVNDEBUG("nwfs_read:\n");
370
371 if (vp->v_type != VREG && vp->v_type != VDIR)
372 return (EPERM);
373 error = nwfs_readvnode(vp, uio, ap->a_cred);
374 return error;
375 }
376
377 static int
378 nwfs_write(ap)
379 struct vop_write_args /* {
380 struct vnode *a_vp;
381 struct uio *a_uio;
382 int a_ioflag;
383 struct ucred *a_cred;
384 } */ *ap;
385 {
386 struct vnode *vp = ap->a_vp;
387 struct uio *uio = ap->a_uio;
388 int error;
389
390 NCPVNDEBUG("%d,ofs=%d,sz=%d\n", vp->v_type, (int)uio->uio_offset, uio->uio_resid);
391
392 if (vp->v_type != VREG)
393 return (EPERM);
394 error = nwfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag);
395 return(error);
396 }
397 /*
398 * nwfs_create call
399 * Create a regular file. On entry the directory to contain the file being
400 * created is locked. We must release before we return. We must also free
401 * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or
402 * only if the SAVESTART bit in cn_flags is clear on success.
403 */
404 static int
405 nwfs_create(ap)
406 struct vop_create_args /* {
407 struct vnode *a_dvp;
408 struct vnode **a_vpp;
409 struct componentname *a_cnp;
410 struct vattr *a_vap;
411 } */ *ap;
412 {
413 struct vnode *dvp = ap->a_dvp;
414 struct vattr *vap = ap->a_vap;
415 struct vnode **vpp=ap->a_vpp;
416 struct componentname *cnp = ap->a_cnp;
417 struct vnode *vp = (struct vnode *)0;
418 int error = 0, fmode;
419 struct vattr vattr;
420 struct nwnode *np;
421 struct ncp_open_info no;
422 struct nwmount *nmp=VTONWFS(dvp);
423 ncpfid fid;
424
425
426 NCPVNDEBUG("\n");
427 *vpp = NULL;
428 if (vap->va_type == VSOCK)
429 return (EOPNOTSUPP);
430 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
431 return (error);
432 fmode = AR_READ | AR_WRITE;
433 /* if (vap->va_vaflags & VA_EXCLUSIVE)
434 fmode |= AR_DENY_READ | AR_DENY_WRITE;*/
435
436 error = ncp_open_create_file_or_subdir(nmp, dvp, cnp->cn_namelen, cnp->cn_nameptr,
437 OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE,
438 0, fmode, &no, cnp->cn_thread, cnp->cn_cred);
439 if (!error) {
440 error = ncp_close_file(NWFSTOCONN(nmp), &no.fh, cnp->cn_thread, cnp->cn_cred);
441 fid.f_parent = VTONW(dvp)->n_fid.f_id;
442 fid.f_id = no.fattr.dirEntNum;
443 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &vp);
444 if (!error) {
445 np = VTONW(vp);
446 np->opened = 0;
447 *vpp = vp;
448 }
449 if (cnp->cn_flags & MAKEENTRY)
450 cache_enter(dvp, vp, cnp);
451 }
452 return (error);
453 }
454
455 /*
456 * nwfs_remove call. It isn't possible to emulate UFS behaivour because
457 * NetWare doesn't allow delete/rename operations on an opened file.
458 */
459 static int
460 nwfs_remove(ap)
461 struct vop_remove_args /* {
462 struct vnodeop_desc *a_desc;
463 struct vnode * a_dvp;
464 struct vnode * a_vp;
465 struct componentname * a_cnp;
466 } */ *ap;
467 {
468 struct vnode *vp = ap->a_vp;
469 struct vnode *dvp = ap->a_dvp;
470 struct componentname *cnp = ap->a_cnp;
471 struct nwnode *np = VTONW(vp);
472 struct nwmount *nmp = VTONWFS(vp);
473 int error;
474
475 if (vp->v_type == VDIR || np->opened || vrefcnt(vp) != 1)
476 return EPERM;
477 cache_purge(vp);
478 error = ncp_DeleteNSEntry(nmp, VTONW(dvp)->n_fid.f_id,
479 cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_thread, cnp->cn_cred);
480 if (error == 0)
481 np->n_flag |= NSHOULDFREE;
482 else if (error == 0x899c)
483 error = EACCES;
484 return (error);
485 }
486
487 /*
488 * nwfs_file rename call
489 */
490 static int
491 nwfs_rename(ap)
492 struct vop_rename_args /* {
493 struct vnode *a_fdvp;
494 struct vnode *a_fvp;
495 struct componentname *a_fcnp;
496 struct vnode *a_tdvp;
497 struct vnode *a_tvp;
498 struct componentname *a_tcnp;
499 } */ *ap;
500 {
501 struct vnode *fvp = ap->a_fvp;
502 struct vnode *tvp = ap->a_tvp;
503 struct vnode *fdvp = ap->a_fdvp;
504 struct vnode *tdvp = ap->a_tdvp;
505 struct componentname *tcnp = ap->a_tcnp;
506 struct componentname *fcnp = ap->a_fcnp;
507 struct nwmount *nmp=VTONWFS(fvp);
508 u_int16_t oldtype = 6;
509 int error=0;
510
511 /* Check for cross-device rename */
512 if ((fvp->v_mount != tdvp->v_mount) ||
513 (tvp && (fvp->v_mount != tvp->v_mount))) {
514 error = EXDEV;
515 goto out;
516 }
517
518 if (tvp && vrefcnt(tvp) > 1) {
519 error = EBUSY;
520 goto out;
521 }
522 if (fvp->v_type == VDIR) {
523 oldtype |= NW_TYPE_SUBDIR;
524 } else if (fvp->v_type == VREG) {
525 oldtype |= NW_TYPE_FILE;
526 } else {
527 error = EINVAL;
528 goto out;
529 }
530 if (tvp && tvp != fvp) {
531 error = ncp_DeleteNSEntry(nmp, VTONW(tdvp)->n_fid.f_id,
532 tcnp->cn_namelen, tcnp->cn_nameptr,
533 tcnp->cn_thread, tcnp->cn_cred);
534 if (error == 0x899c) error = EACCES;
535 if (error)
536 goto out_cacherem;
537 }
538 error = ncp_nsrename(NWFSTOCONN(nmp), nmp->n_volume, nmp->name_space,
539 oldtype, &nmp->m.nls,
540 VTONW(fdvp)->n_fid.f_id, fcnp->cn_nameptr, fcnp->cn_namelen,
541 VTONW(tdvp)->n_fid.f_id, tcnp->cn_nameptr, tcnp->cn_namelen,
542 tcnp->cn_thread, tcnp->cn_cred);
543
544 if (error == 0x8992)
545 error = EEXIST;
546 if (fvp->v_type == VDIR) {
547 if (tvp != NULL && tvp->v_type == VDIR)
548 cache_purge(tdvp);
549 cache_purge(fdvp);
550 }
551 out_cacherem:
552 nwfs_attr_cacheremove(fdvp);
553 nwfs_attr_cacheremove(tdvp);
554 nwfs_attr_cacheremove(fvp);
555 out:
556 if (tdvp == tvp)
557 vrele(tdvp);
558 else
559 vput(tdvp);
560 if (tvp)
561 vput(tvp);
562 vrele(fdvp);
563 vrele(fvp);
564 if (tvp)
565 nwfs_attr_cacheremove(tvp);
566 /*
567 * Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
568 */
569 if (error == ENOENT)
570 error = 0;
571 return (error);
572 }
573
574 /*
575 * nwfs hard link create call
576 * Netware filesystems don't know what links are.
577 */
578 static int
579 nwfs_link(ap)
580 struct vop_link_args /* {
581 struct vnode *a_tdvp;
582 struct vnode *a_vp;
583 struct componentname *a_cnp;
584 } */ *ap;
585 {
586 return EOPNOTSUPP;
587 }
588
589 /*
590 * nwfs_symlink link create call
591 * Netware filesystems don't know what symlinks are.
592 */
593 static int
594 nwfs_symlink(ap)
595 struct vop_symlink_args /* {
596 struct vnode *a_dvp;
597 struct vnode **a_vpp;
598 struct componentname *a_cnp;
599 struct vattr *a_vap;
600 char *a_target;
601 } */ *ap;
602 {
603 return (EOPNOTSUPP);
604 }
605
606 static int nwfs_mknod(ap)
607 struct vop_mknod_args /* {
608 } */ *ap;
609 {
610 return (EOPNOTSUPP);
611 }
612
613 /*
614 * nwfs_mkdir call
615 */
616 static int
617 nwfs_mkdir(ap)
618 struct vop_mkdir_args /* {
619 struct vnode *a_dvp;
620 struct vnode **a_vpp;
621 struct componentname *a_cnp;
622 struct vattr *a_vap;
623 } */ *ap;
624 {
625 struct vnode *dvp = ap->a_dvp;
626 /* struct vattr *vap = ap->a_vap;*/
627 struct componentname *cnp = ap->a_cnp;
628 int len=cnp->cn_namelen;
629 struct ncp_open_info no;
630 struct vnode *newvp = (struct vnode *)0;
631 ncpfid fid;
632 int error = 0;
633 struct vattr vattr;
634 char *name=cnp->cn_nameptr;
635
636 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
637 return (error);
638 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) {
639 return EEXIST;
640 }
641 if (ncp_open_create_file_or_subdir(VTONWFS(dvp), dvp, cnp->cn_namelen,
642 cnp->cn_nameptr, OC_MODE_CREATE, aDIR, 0xffff,
643 &no, cnp->cn_thread, cnp->cn_cred) != 0) {
644 error = EACCES;
645 } else {
646 error = 0;
647 }
648 if (!error) {
649 fid.f_parent = VTONW(dvp)->n_fid.f_id;
650 fid.f_id = no.fattr.dirEntNum;
651 error = nwfs_nget(VTOVFS(dvp), fid, &no.fattr, dvp, &newvp);
652 if (!error) {
653 newvp->v_type = VDIR;
654 *ap->a_vpp = newvp;
655 }
656 }
657 return (error);
658 }
659
660 /*
661 * nwfs_remove directory call
662 */
663 static int
664 nwfs_rmdir(ap)
665 struct vop_rmdir_args /* {
666 struct vnode *a_dvp;
667 struct vnode *a_vp;
668 struct componentname *a_cnp;
669 } */ *ap;
670 {
671 struct vnode *vp = ap->a_vp;
672 struct vnode *dvp = ap->a_dvp;
673 struct componentname *cnp = ap->a_cnp;
674 struct nwnode *np = VTONW(vp);
675 struct nwmount *nmp = VTONWFS(vp);
676 struct nwnode *dnp = VTONW(dvp);
677 int error = EIO;
678
679 if (dvp == vp)
680 return EINVAL;
681
682 error = ncp_DeleteNSEntry(nmp, dnp->n_fid.f_id,
683 cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_thread, cnp->cn_cred);
684 if (error == 0)
685 np->n_flag |= NSHOULDFREE;
686 else if (error == NWE_DIR_NOT_EMPTY)
687 error = ENOTEMPTY;
688 dnp->n_flag |= NMODIFIED;
689 nwfs_attr_cacheremove(dvp);
690 cache_purge(dvp);
691 cache_purge(vp);
692 return (error);
693 }
694
695 /*
696 * nwfs_readdir call
697 */
698 static int
699 nwfs_readdir(ap)
700 struct vop_readdir_args /* {
701 struct vnode *a_vp;
702 struct uio *a_uio;
703 struct ucred *a_cred;
704 int *a_eofflag;
705 u_long *a_cookies;
706 int a_ncookies;
707 } */ *ap;
708 {
709 struct vnode *vp = ap->a_vp;
710 struct uio *uio = ap->a_uio;
711 int error;
712
713 if (vp->v_type != VDIR)
714 return (EPERM);
715 if (ap->a_ncookies) {
716 printf("nwfs_readdir: no support for cookies now...");
717 return (EOPNOTSUPP);
718 }
719
720 error = nwfs_readvnode(vp, uio, ap->a_cred);
721 return error;
722 }
723 /* ARGSUSED */
724 static int
725 nwfs_fsync(ap)
726 struct vop_fsync_args /* {
727 struct vnodeop_desc *a_desc;
728 struct vnode * a_vp;
729 struct ucred * a_cred;
730 int a_waitfor;
731 struct thread *a_td;
732 } */ *ap;
733 {
734 /* return (nfs_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
735 return (0);
736 }
737
738 /* ARGSUSED */
739 static
740 int nwfs_print (ap)
741 struct vop_print_args /* {
742 struct vnode *a_vp;
743 } */ *ap;
744 {
745 struct vnode *vp = ap->a_vp;
746 struct nwnode *np = VTONW(vp);
747
748 printf("\tnwfs node: name = '%s', fid = %d, pfid = %d\n",
749 np->n_name, np->n_fid.f_id, np->n_fid.f_parent);
750 return (0);
751 }
752
753 static int nwfs_pathconf (ap)
754 struct vop_pathconf_args /* {
755 struct vnode *vp;
756 int name;
757 register_t *retval;
758 } */ *ap;
759 {
760 int name=ap->a_name, error=0;
761 register_t *retval=ap->a_retval;
762
763 switch(name){
764 case _PC_LINK_MAX:
765 *retval=0;
766 break;
767 case _PC_NAME_MAX:
768 *retval=NCP_MAX_FILENAME; /* XXX from nwfsnode */
769 break;
770 case _PC_PATH_MAX:
771 *retval=NCP_MAXPATHLEN; /* XXX from nwfsnode */
772 break;
773 default:
774 error=EINVAL;
775 }
776 return(error);
777 }
778
779 static int nwfs_strategy (ap)
780 struct vop_strategy_args /* {
781 struct buf *a_bp
782 } */ *ap;
783 {
784 struct buf *bp=ap->a_bp;
785 struct ucred *cr;
786 struct thread *td;
787
788 NCPVNDEBUG("\n");
789 if (bp->b_flags & B_ASYNC)
790 td = (struct thread *)0;
791 else
792 td = curthread; /* XXX */
793 if (bp->b_iocmd == BIO_READ)
794 cr = bp->b_rcred;
795 else
796 cr = bp->b_wcred;
797 /*
798 * If the op is asynchronous and an i/o daemon is waiting
799 * queue the request, wake it up and wait for completion
800 * otherwise just do it ourselves.
801 */
802 if ((bp->b_flags & B_ASYNC) == 0 )
803 (void)nwfs_doio(ap->a_vp, bp, cr, td);
804 return (0);
805 }
806
807
808 /*
809 * How to keep the brain busy ...
810 * Currently lookup routine can make two lookup for vnode. This can be
811 * avoided by reorg the code.
812 */
813 int
814 nwfs_lookup(ap)
815 struct vop_lookup_args /* {
816 struct vnodeop_desc *a_desc;
817 struct vnode *a_dvp;
818 struct vnode **a_vpp;
819 struct componentname *a_cnp;
820 } */ *ap;
821 {
822 struct componentname *cnp = ap->a_cnp;
823 struct vnode *dvp = ap->a_dvp;
824 struct vnode **vpp = ap->a_vpp;
825 int flags = cnp->cn_flags;
826 struct vnode *vp;
827 struct nwmount *nmp;
828 struct mount *mp = dvp->v_mount;
829 struct nwnode *dnp, *npp;
830 struct nw_entry_info fattr, *fap;
831 ncpfid fid;
832 int nameiop=cnp->cn_nameiop, islastcn;
833 int error = 0, notfound;
834 struct thread *td = cnp->cn_thread;
835 char _name[cnp->cn_namelen+1];
836 bcopy(cnp->cn_nameptr, _name, cnp->cn_namelen);
837 _name[cnp->cn_namelen]=0;
838
839 if (dvp->v_type != VDIR)
840 return (ENOTDIR);
841 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) {
842 printf("nwfs_lookup: invalid '..'\n");
843 return EIO;
844 }
845
846 NCPVNDEBUG("%d '%s' in '%s' id=d\n", nameiop, _name,
847 VTONW(dvp)->n_name/*, VTONW(dvp)->n_name*/);
848
849 islastcn = flags & ISLASTCN;
850 if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP))
851 return (EROFS);
852 if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)))
853 return (error);
854 nmp = VFSTONWFS(mp);
855 dnp = VTONW(dvp);
856 /*
857 printf("dvp %d:%d:%d\n", (int)mp, (int)dvp->v_vflag & VV_ROOT, (int)flags & ISDOTDOT);
858 */
859 error = ncp_pathcheck(cnp->cn_nameptr, cnp->cn_namelen, &nmp->m.nls,
860 (nameiop == CREATE || nameiop == RENAME) && (nmp->m.nls.opt & NWHP_NOSTRICT) == 0);
861 if (error)
862 return ENOENT;
863
864 error = cache_lookup(dvp, vpp, cnp);
865 NCPVNDEBUG("cache_lookup returned %d\n", error);
866 if (error > 0)
867 return error;
868 if (error) { /* name was found */
869 struct vattr vattr;
870
871 vp = *vpp;
872 if (!VOP_GETATTR(vp, &vattr, cnp->cn_cred) &&
873 vattr.va_ctime.tv_sec == VTONW(vp)->n_ctime) {
874 if (nameiop != LOOKUP && islastcn)
875 cnp->cn_flags |= SAVENAME;
876 NCPVNDEBUG("use cached vnode");
877 return (0);
878 }
879 cache_purge(vp);
880 if (vp != dvp)
881 vput(vp);
882 else
883 vrele(vp);
884 *vpp = NULLVP;
885 }
886 /* not in cache, so ... */
887 error = 0;
888 *vpp = NULLVP;
889 fap = NULL;
890 if (flags & ISDOTDOT) {
891 if (NWCMPF(&dnp->n_parent, &nmp->n_rootent)) {
892 fid = nmp->n_rootent;
893 fap = NULL;
894 notfound = 0;
895 } else {
896 error = nwfs_lookupnp(nmp, dnp->n_parent, td, &npp);
897 if (error) {
898 return error;
899 }
900 fid = dnp->n_parent;
901 fap = &fattr;
902 /*np = *npp;*/
903 notfound = ncp_obtain_info(nmp, npp->n_dosfid,
904 0, NULL, fap, td, cnp->cn_cred);
905 }
906 } else {
907 fap = &fattr;
908 notfound = ncp_lookup(dvp, cnp->cn_namelen, cnp->cn_nameptr,
909 fap, td, cnp->cn_cred);
910 fid.f_id = fap->dirEntNum;
911 if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
912 fid.f_parent = dnp->n_fid.f_parent;
913 } else
914 fid.f_parent = dnp->n_fid.f_id;
915 NCPVNDEBUG("call to ncp_lookup returned=%d\n", notfound);
916 }
917 if (notfound && notfound < 0x80 )
918 return (notfound); /* hard error */
919 if (notfound) { /* entry not found */
920 /* Handle RENAME or CREATE case... */
921 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
922 cnp->cn_flags |= SAVENAME;
923 return (EJUSTRETURN);
924 }
925 return ENOENT;
926 }/* else {
927 NCPVNDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
928 }*/
929 /* handle DELETE case ... */
930 if (nameiop == DELETE && islastcn) { /* delete last component */
931 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, cnp->cn_thread);
932 if (error) return (error);
933 if (NWCMPF(&dnp->n_fid, &fid)) { /* we found ourselfs */
934 VREF(dvp);
935 *vpp = dvp;
936 return 0;
937 }
938 error = nwfs_nget(mp, fid, fap, dvp, &vp);
939 if (error) return (error);
940 *vpp = vp;
941 cnp->cn_flags |= SAVENAME; /* I free it later */
942 return (0);
943 }
944 if (nameiop == RENAME && islastcn) {
945 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, cnp->cn_thread);
946 if (error) return (error);
947 if (NWCMPF(&dnp->n_fid, &fid)) return EISDIR;
948 error = nwfs_nget(mp, fid, fap, dvp, &vp);
949 if (error) return (error);
950 *vpp = vp;
951 cnp->cn_flags |= SAVENAME;
952 return (0);
953 }
954 if (flags & ISDOTDOT) {
955 VOP_UNLOCK(dvp, 0); /* race to get the inode */
956 error = nwfs_nget(mp, fid, NULL, NULL, &vp);
957 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
958 if (error)
959 return (error);
960 *vpp = vp;
961 } else if (NWCMPF(&dnp->n_fid, &fid)) {
962 vref(dvp);
963 *vpp = dvp;
964 } else {
965 error = nwfs_nget(mp, fid, fap, dvp, &vp);
966 if (error) return (error);
967 *vpp = vp;
968 NCPVNDEBUG("lookup: getnewvp!\n");
969 }
970 if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) {
971 VTONW(*vpp)->n_ctime = VTONW(*vpp)->n_vattr.va_ctime.tv_sec;
972 cache_enter(dvp, *vpp, cnp);
973 }
974 return (0);
975 }
Cache object: fccceb70aba20b1f1e25763bbf2eb5de
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