1 /*-
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its 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 REGENTS 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 REGENTS 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 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 /*
38 * Rpc op calls, generally called from the vnode op calls or through the
39 * buffer cache, for NFS v2, 3 and 4.
40 * These do not normally make any changes to vnode arguments or use
41 * structures that might change between the VFS variants. The returned
42 * arguments are all at the end, after the NFSPROC_T *p one.
43 */
44
45 #ifndef APPLEKEXT
46 #include "opt_inet6.h"
47
48 #include <fs/nfs/nfsport.h>
49
50 /*
51 * Global variables
52 */
53 extern int nfs_numnfscbd;
54 extern struct timeval nfsboottime;
55 extern u_int32_t newnfs_false, newnfs_true;
56 extern nfstype nfsv34_type[9];
57 extern int nfsrv_useacl;
58 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
59 extern int nfscl_debuglevel;
60 NFSCLSTATEMUTEX;
61 int nfstest_outofseq = 0;
62 int nfscl_assumeposixlocks = 1;
63 int nfscl_enablecallb = 0;
64 short nfsv4_cbport = NFSV4_CBPORT;
65 int nfstest_openallsetattr = 0;
66 #endif /* !APPLEKEXT */
67
68 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1))
69
70 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
71 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
72 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
73 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
74 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
75 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
76 void *);
77 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
78 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
79 struct nfsvattr *, struct nfsfh **, int *, int *, void *);
80 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
81 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
82 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
83 int *, void *, int *);
84 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
85 struct nfscllockowner *, u_int64_t, u_int64_t,
86 u_int32_t, struct ucred *, NFSPROC_T *, int);
87 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
88 struct acl *, nfsv4stateid_t *, void *);
89
90 /*
91 * nfs null call from vfs.
92 */
93 APPLESTATIC int
94 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
95 {
96 int error;
97 struct nfsrv_descript nfsd, *nd = &nfsd;
98
99 NFSCL_REQSTART(nd, NFSPROC_NULL, vp);
100 error = nfscl_request(nd, vp, p, cred, NULL);
101 if (nd->nd_repstat && !error)
102 error = nd->nd_repstat;
103 mbuf_freem(nd->nd_mrep);
104 return (error);
105 }
106
107 /*
108 * nfs access rpc op.
109 * For nfs version 3 and 4, use the access rpc to check accessibility. If file
110 * modes are changed on the server, accesses might still fail later.
111 */
112 APPLESTATIC int
113 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
114 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
115 {
116 int error;
117 u_int32_t mode, rmode;
118
119 if (acmode & VREAD)
120 mode = NFSACCESS_READ;
121 else
122 mode = 0;
123 if (vnode_vtype(vp) == VDIR) {
124 if (acmode & VWRITE)
125 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
126 NFSACCESS_DELETE);
127 if (acmode & VEXEC)
128 mode |= NFSACCESS_LOOKUP;
129 } else {
130 if (acmode & VWRITE)
131 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
132 if (acmode & VEXEC)
133 mode |= NFSACCESS_EXECUTE;
134 }
135
136 /*
137 * Now, just call nfsrpc_accessrpc() to do the actual RPC.
138 */
139 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode,
140 NULL);
141
142 /*
143 * The NFS V3 spec does not clarify whether or not
144 * the returned access bits can be a superset of
145 * the ones requested, so...
146 */
147 if (!error && (rmode & mode) != mode)
148 error = EACCES;
149 return (error);
150 }
151
152 /*
153 * The actual rpc, separated out for Darwin.
154 */
155 APPLESTATIC int
156 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
157 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep,
158 void *stuff)
159 {
160 u_int32_t *tl;
161 u_int32_t supported, rmode;
162 int error;
163 struct nfsrv_descript nfsd, *nd = &nfsd;
164 nfsattrbit_t attrbits;
165
166 *attrflagp = 0;
167 supported = mode;
168 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
169 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
170 *tl = txdr_unsigned(mode);
171 if (nd->nd_flag & ND_NFSV4) {
172 /*
173 * And do a Getattr op.
174 */
175 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
176 *tl = txdr_unsigned(NFSV4OP_GETATTR);
177 NFSGETATTR_ATTRBIT(&attrbits);
178 (void) nfsrv_putattrbit(nd, &attrbits);
179 }
180 error = nfscl_request(nd, vp, p, cred, stuff);
181 if (error)
182 return (error);
183 if (nd->nd_flag & ND_NFSV3) {
184 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
185 if (error)
186 goto nfsmout;
187 }
188 if (!nd->nd_repstat) {
189 if (nd->nd_flag & ND_NFSV4) {
190 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
191 supported = fxdr_unsigned(u_int32_t, *tl++);
192 } else {
193 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
194 }
195 rmode = fxdr_unsigned(u_int32_t, *tl);
196 if (nd->nd_flag & ND_NFSV4)
197 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
198
199 /*
200 * It's not obvious what should be done about
201 * unsupported access modes. For now, be paranoid
202 * and clear the unsupported ones.
203 */
204 rmode &= supported;
205 *rmodep = rmode;
206 } else
207 error = nd->nd_repstat;
208 nfsmout:
209 mbuf_freem(nd->nd_mrep);
210 return (error);
211 }
212
213 /*
214 * nfs open rpc
215 */
216 APPLESTATIC int
217 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
218 {
219 struct nfsclopen *op;
220 struct nfscldeleg *dp;
221 struct nfsfh *nfhp;
222 struct nfsnode *np = VTONFS(vp);
223 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
224 u_int32_t mode, clidrev;
225 int ret, newone, error, expireret = 0, retrycnt;
226
227 /*
228 * For NFSv4, Open Ops are only done on Regular Files.
229 */
230 if (vnode_vtype(vp) != VREG)
231 return (0);
232 mode = 0;
233 if (amode & FREAD)
234 mode |= NFSV4OPEN_ACCESSREAD;
235 if (amode & FWRITE)
236 mode |= NFSV4OPEN_ACCESSWRITE;
237 nfhp = np->n_fhp;
238
239 retrycnt = 0;
240 #ifdef notdef
241 { char name[100]; int namel;
242 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
243 bcopy(NFS4NODENAME(np->n_v4), name, namel);
244 name[namel] = '\0';
245 printf("rpcopen p=0x%x name=%s",p->p_pid,name);
246 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
247 else printf(" fhl=0\n");
248 }
249 #endif
250 do {
251 dp = NULL;
252 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
253 cred, p, NULL, &op, &newone, &ret, 1);
254 if (error) {
255 return (error);
256 }
257 if (nmp->nm_clp != NULL)
258 clidrev = nmp->nm_clp->nfsc_clientidrev;
259 else
260 clidrev = 0;
261 if (ret == NFSCLOPEN_DOOPEN) {
262 if (np->n_v4 != NULL) {
263 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data,
264 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
265 np->n_fhp->nfh_len, mode, op,
266 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp,
267 0, 0x0, cred, p, 0, 0);
268 if (dp != NULL) {
269 #ifdef APPLE
270 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
271 #else
272 NFSLOCKNODE(np);
273 np->n_flag &= ~NDELEGMOD;
274 /*
275 * Invalidate the attribute cache, so that
276 * attributes that pre-date the issue of a
277 * delegation are not cached, since the
278 * cached attributes will remain valid while
279 * the delegation is held.
280 */
281 NFSINVALATTRCACHE(np);
282 NFSUNLOCKNODE(np);
283 #endif
284 (void) nfscl_deleg(nmp->nm_mountp,
285 op->nfso_own->nfsow_clp,
286 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
287 }
288 } else {
289 error = EIO;
290 }
291 newnfs_copyincred(cred, &op->nfso_cred);
292 } else if (ret == NFSCLOPEN_SETCRED)
293 /*
294 * This is a new local open on a delegation. It needs
295 * to have credentials so that an open can be done
296 * against the server during recovery.
297 */
298 newnfs_copyincred(cred, &op->nfso_cred);
299
300 /*
301 * nfso_opencnt is the count of how many VOP_OPEN()s have
302 * been done on this Open successfully and a VOP_CLOSE()
303 * is expected for each of these.
304 * If error is non-zero, don't increment it, since the Open
305 * hasn't succeeded yet.
306 */
307 if (!error)
308 op->nfso_opencnt++;
309 nfscl_openrelease(op, error, newone);
310 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
311 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) {
312 (void) nfs_catnap(PZERO, error, "nfs_open");
313 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
314 && clidrev != 0) {
315 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
316 retrycnt++;
317 }
318 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
319 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
320 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
321 expireret == 0 && clidrev != 0 && retrycnt < 4));
322 if (error && retrycnt >= 4)
323 error = EIO;
324 return (error);
325 }
326
327 /*
328 * the actual open rpc
329 */
330 APPLESTATIC int
331 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
332 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
333 u_int8_t *name, int namelen, struct nfscldeleg **dpp,
334 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
335 int syscred, int recursed)
336 {
337 u_int32_t *tl;
338 struct nfsrv_descript nfsd, *nd = &nfsd;
339 struct nfscldeleg *dp, *ndp = NULL;
340 struct nfsvattr nfsva;
341 u_int32_t rflags, deleg;
342 nfsattrbit_t attrbits;
343 int error, ret, acesize, limitby;
344
345 dp = *dpp;
346 *dpp = NULL;
347 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL);
348 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
349 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
350 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
351 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
352 *tl++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0];
353 *tl = op->nfso_own->nfsow_clp->nfsc_clientid.lval[1];
354 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
355 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
356 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
357 if (reclaim) {
358 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
359 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
360 *tl = txdr_unsigned(delegtype);
361 } else {
362 if (dp != NULL) {
363 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
364 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
365 *tl++ = dp->nfsdl_stateid.seqid;
366 *tl++ = dp->nfsdl_stateid.other[0];
367 *tl++ = dp->nfsdl_stateid.other[1];
368 *tl = dp->nfsdl_stateid.other[2];
369 } else {
370 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
371 }
372 (void) nfsm_strtom(nd, name, namelen);
373 }
374 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
375 *tl = txdr_unsigned(NFSV4OP_GETATTR);
376 NFSZERO_ATTRBIT(&attrbits);
377 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
378 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
379 (void) nfsrv_putattrbit(nd, &attrbits);
380 if (syscred)
381 nd->nd_flag |= ND_USEGSSNAME;
382 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
383 NFS_PROG, NFS_VER4, NULL, 1, NULL);
384 if (error)
385 return (error);
386 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
387 if (!nd->nd_repstat) {
388 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
389 6 * NFSX_UNSIGNED);
390 op->nfso_stateid.seqid = *tl++;
391 op->nfso_stateid.other[0] = *tl++;
392 op->nfso_stateid.other[1] = *tl++;
393 op->nfso_stateid.other[2] = *tl;
394 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
395 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
396 if (error)
397 goto nfsmout;
398 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
399 deleg = fxdr_unsigned(u_int32_t, *tl);
400 if (deleg == NFSV4OPEN_DELEGATEREAD ||
401 deleg == NFSV4OPEN_DELEGATEWRITE) {
402 if (!(op->nfso_own->nfsow_clp->nfsc_flags &
403 NFSCLFLAGS_FIRSTDELEG))
404 op->nfso_own->nfsow_clp->nfsc_flags |=
405 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
406 MALLOC(ndp, struct nfscldeleg *,
407 sizeof (struct nfscldeleg) + newfhlen,
408 M_NFSCLDELEG, M_WAITOK);
409 LIST_INIT(&ndp->nfsdl_owner);
410 LIST_INIT(&ndp->nfsdl_lock);
411 ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
412 ndp->nfsdl_fhlen = newfhlen;
413 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
414 newnfs_copyincred(cred, &ndp->nfsdl_cred);
415 nfscl_lockinit(&ndp->nfsdl_rwlock);
416 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
417 NFSX_UNSIGNED);
418 ndp->nfsdl_stateid.seqid = *tl++;
419 ndp->nfsdl_stateid.other[0] = *tl++;
420 ndp->nfsdl_stateid.other[1] = *tl++;
421 ndp->nfsdl_stateid.other[2] = *tl++;
422 ret = fxdr_unsigned(int, *tl);
423 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
424 ndp->nfsdl_flags = NFSCLDL_WRITE;
425 /*
426 * Indicates how much the file can grow.
427 */
428 NFSM_DISSECT(tl, u_int32_t *,
429 3 * NFSX_UNSIGNED);
430 limitby = fxdr_unsigned(int, *tl++);
431 switch (limitby) {
432 case NFSV4OPEN_LIMITSIZE:
433 ndp->nfsdl_sizelimit = fxdr_hyper(tl);
434 break;
435 case NFSV4OPEN_LIMITBLOCKS:
436 ndp->nfsdl_sizelimit =
437 fxdr_unsigned(u_int64_t, *tl++);
438 ndp->nfsdl_sizelimit *=
439 fxdr_unsigned(u_int64_t, *tl);
440 break;
441 default:
442 error = NFSERR_BADXDR;
443 goto nfsmout;
444 };
445 } else {
446 ndp->nfsdl_flags = NFSCLDL_READ;
447 }
448 if (ret)
449 ndp->nfsdl_flags |= NFSCLDL_RECALL;
450 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
451 &acesize, p);
452 if (error)
453 goto nfsmout;
454 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
455 error = NFSERR_BADXDR;
456 goto nfsmout;
457 }
458 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
459 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
460 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
461 NULL, NULL, NULL, p, cred);
462 if (error)
463 goto nfsmout;
464 if (ndp != NULL) {
465 ndp->nfsdl_change = nfsva.na_filerev;
466 ndp->nfsdl_modtime = nfsva.na_mtime;
467 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
468 }
469 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
470 do {
471 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
472 cred, p);
473 if (ret == NFSERR_DELAY)
474 (void) nfs_catnap(PZERO, ret, "nfs_open");
475 } while (ret == NFSERR_DELAY);
476 error = ret;
477 }
478 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
479 nfscl_assumeposixlocks)
480 op->nfso_posixlock = 1;
481 else
482 op->nfso_posixlock = 0;
483
484 /*
485 * If the server is handing out delegations, but we didn't
486 * get one because an OpenConfirm was required, try the
487 * Open again, to get a delegation. This is a harmless no-op,
488 * from a server's point of view.
489 */
490 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
491 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
492 && !error && dp == NULL && ndp == NULL && !recursed) {
493 do {
494 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
495 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
496 cred, p, syscred, 1);
497 if (ret == NFSERR_DELAY)
498 (void) nfs_catnap(PZERO, ret, "nfs_open2");
499 } while (ret == NFSERR_DELAY);
500 if (ret) {
501 if (ndp != NULL)
502 FREE((caddr_t)ndp, M_NFSCLDELEG);
503 if (ret == NFSERR_STALECLIENTID ||
504 ret == NFSERR_STALEDONTRECOVER)
505 error = ret;
506 }
507 }
508 }
509 if (nd->nd_repstat != 0 && error == 0)
510 error = nd->nd_repstat;
511 if (error == NFSERR_STALECLIENTID)
512 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
513 nfsmout:
514 if (!error)
515 *dpp = ndp;
516 else if (ndp != NULL)
517 FREE((caddr_t)ndp, M_NFSCLDELEG);
518 mbuf_freem(nd->nd_mrep);
519 return (error);
520 }
521
522 /*
523 * open downgrade rpc
524 */
525 APPLESTATIC int
526 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
527 struct ucred *cred, NFSPROC_T *p)
528 {
529 u_int32_t *tl;
530 struct nfsrv_descript nfsd, *nd = &nfsd;
531 int error;
532
533 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
534 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
535 *tl++ = op->nfso_stateid.seqid;
536 *tl++ = op->nfso_stateid.other[0];
537 *tl++ = op->nfso_stateid.other[1];
538 *tl++ = op->nfso_stateid.other[2];
539 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
540 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
541 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
542 error = nfscl_request(nd, vp, p, cred, NULL);
543 if (error)
544 return (error);
545 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
546 if (!nd->nd_repstat) {
547 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
548 op->nfso_stateid.seqid = *tl++;
549 op->nfso_stateid.other[0] = *tl++;
550 op->nfso_stateid.other[1] = *tl++;
551 op->nfso_stateid.other[2] = *tl;
552 }
553 if (nd->nd_repstat && error == 0)
554 error = nd->nd_repstat;
555 if (error == NFSERR_STALESTATEID)
556 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
557 nfsmout:
558 mbuf_freem(nd->nd_mrep);
559 return (error);
560 }
561
562 /*
563 * V4 Close operation.
564 */
565 APPLESTATIC int
566 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
567 {
568 struct nfsclclient *clp;
569 int error;
570
571 if (vnode_vtype(vp) != VREG)
572 return (0);
573 if (doclose)
574 error = nfscl_doclose(vp, &clp, p);
575 else
576 error = nfscl_getclose(vp, &clp);
577 if (error)
578 return (error);
579
580 nfscl_clientrelease(clp);
581 return (0);
582 }
583
584 /*
585 * Close the open.
586 */
587 APPLESTATIC void
588 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
589 {
590 struct nfsrv_descript nfsd, *nd = &nfsd;
591 struct nfscllockowner *lp, *nlp;
592 struct nfscllock *lop, *nlop;
593 struct ucred *tcred;
594 u_int64_t off = 0, len = 0;
595 u_int32_t type = NFSV4LOCKT_READ;
596 int error, do_unlock, trycnt;
597
598 tcred = newnfs_getcred();
599 newnfs_copycred(&op->nfso_cred, tcred);
600 /*
601 * (Theoretically this could be done in the same
602 * compound as the close, but having multiple
603 * sequenced Ops in the same compound might be
604 * too scary for some servers.)
605 */
606 if (op->nfso_posixlock) {
607 off = 0;
608 len = NFS64BITSSET;
609 type = NFSV4LOCKT_READ;
610 }
611
612 /*
613 * Since this function is only called from VOP_INACTIVE(), no
614 * other thread will be manipulating this Open. As such, the
615 * lock lists are not being changed by other threads, so it should
616 * be safe to do this without locking.
617 */
618 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
619 do_unlock = 1;
620 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
621 if (op->nfso_posixlock == 0) {
622 off = lop->nfslo_first;
623 len = lop->nfslo_end - lop->nfslo_first;
624 if (lop->nfslo_type == F_WRLCK)
625 type = NFSV4LOCKT_WRITE;
626 else
627 type = NFSV4LOCKT_READ;
628 }
629 if (do_unlock) {
630 trycnt = 0;
631 do {
632 error = nfsrpc_locku(nd, nmp, lp, off,
633 len, type, tcred, p, 0);
634 if ((nd->nd_repstat == NFSERR_GRACE ||
635 nd->nd_repstat == NFSERR_DELAY) &&
636 error == 0)
637 (void) nfs_catnap(PZERO,
638 (int)nd->nd_repstat,
639 "nfs_close");
640 } while ((nd->nd_repstat == NFSERR_GRACE ||
641 nd->nd_repstat == NFSERR_DELAY) &&
642 error == 0 && trycnt++ < 5);
643 if (op->nfso_posixlock)
644 do_unlock = 0;
645 }
646 nfscl_freelock(lop, 0);
647 }
648 /*
649 * Do a ReleaseLockOwner.
650 * The lock owner name nfsl_owner may be used by other opens for
651 * other files but the lock_owner4 name that nfsrpc_rellockown()
652 * puts on the wire has the file handle for this file appended
653 * to it, so it can be done now.
654 */
655 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
656 lp->nfsl_open->nfso_fhlen, tcred, p);
657 }
658
659 /*
660 * There could be other Opens for different files on the same
661 * OpenOwner, so locking is required.
662 */
663 NFSLOCKCLSTATE();
664 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
665 NFSUNLOCKCLSTATE();
666 do {
667 error = nfscl_tryclose(op, tcred, nmp, p);
668 if (error == NFSERR_GRACE)
669 (void) nfs_catnap(PZERO, error, "nfs_close");
670 } while (error == NFSERR_GRACE);
671 NFSLOCKCLSTATE();
672 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
673
674 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
675 nfscl_freelockowner(lp, 0);
676 nfscl_freeopen(op, 0);
677 NFSUNLOCKCLSTATE();
678 NFSFREECRED(tcred);
679 }
680
681 /*
682 * The actual Close RPC.
683 */
684 APPLESTATIC int
685 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
686 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
687 int syscred)
688 {
689 u_int32_t *tl;
690 int error;
691
692 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
693 op->nfso_fhlen, NULL);
694 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
695 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
696 *tl++ = op->nfso_stateid.seqid;
697 *tl++ = op->nfso_stateid.other[0];
698 *tl++ = op->nfso_stateid.other[1];
699 *tl = op->nfso_stateid.other[2];
700 if (syscred)
701 nd->nd_flag |= ND_USEGSSNAME;
702 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
703 NFS_PROG, NFS_VER4, NULL, 1, NULL);
704 if (error)
705 return (error);
706 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
707 if (nd->nd_repstat == 0)
708 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
709 error = nd->nd_repstat;
710 if (error == NFSERR_STALESTATEID)
711 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
712 nfsmout:
713 mbuf_freem(nd->nd_mrep);
714 return (error);
715 }
716
717 /*
718 * V4 Open Confirm RPC.
719 */
720 APPLESTATIC int
721 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
722 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
723 {
724 u_int32_t *tl;
725 struct nfsrv_descript nfsd, *nd = &nfsd;
726 int error;
727
728 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)),
729 nfhp, fhlen, NULL);
730 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
731 *tl++ = op->nfso_stateid.seqid;
732 *tl++ = op->nfso_stateid.other[0];
733 *tl++ = op->nfso_stateid.other[1];
734 *tl++ = op->nfso_stateid.other[2];
735 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
736 error = nfscl_request(nd, vp, p, cred, NULL);
737 if (error)
738 return (error);
739 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
740 if (!nd->nd_repstat) {
741 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
742 op->nfso_stateid.seqid = *tl++;
743 op->nfso_stateid.other[0] = *tl++;
744 op->nfso_stateid.other[1] = *tl++;
745 op->nfso_stateid.other[2] = *tl;
746 }
747 error = nd->nd_repstat;
748 if (error == NFSERR_STALESTATEID)
749 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
750 nfsmout:
751 mbuf_freem(nd->nd_mrep);
752 return (error);
753 }
754
755 /*
756 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
757 * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
758 */
759 APPLESTATIC int
760 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp,
761 struct ucred *cred, NFSPROC_T *p)
762 {
763 u_int32_t *tl;
764 struct nfsrv_descript nfsd;
765 struct nfsrv_descript *nd = &nfsd;
766 nfsattrbit_t attrbits;
767 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
768 u_short port;
769 int error, isinet6 = 0, callblen;
770 nfsquad_t confirm;
771 u_int32_t lease;
772 static u_int32_t rev = 0;
773
774 if (nfsboottime.tv_sec == 0)
775 NFSSETBOOTTIME(nfsboottime);
776 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL);
777 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
778 *tl++ = txdr_unsigned(nfsboottime.tv_sec);
779 *tl = txdr_unsigned(rev++);
780 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
781
782 /*
783 * set up the callback address
784 */
785 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
786 *tl = txdr_unsigned(NFS_CALLBCKPROG);
787 callblen = strlen(nfsv4_callbackaddr);
788 if (callblen == 0)
789 cp = nfscl_getmyip(nmp, &isinet6);
790 if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
791 (callblen > 0 || cp != NULL)) {
792 port = htons(nfsv4_cbport);
793 cp2 = (u_int8_t *)&port;
794 #ifdef INET6
795 if ((callblen > 0 &&
796 strchr(nfsv4_callbackaddr, ':')) || isinet6) {
797 char ip6buf[INET6_ADDRSTRLEN], *ip6add;
798
799 (void) nfsm_strtom(nd, "tcp6", 4);
800 if (callblen == 0) {
801 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
802 ip6add = ip6buf;
803 } else {
804 ip6add = nfsv4_callbackaddr;
805 }
806 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
807 ip6add, cp2[0], cp2[1]);
808 } else
809 #endif
810 {
811 (void) nfsm_strtom(nd, "tcp", 3);
812 if (callblen == 0)
813 snprintf(addr, INET6_ADDRSTRLEN + 9,
814 "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
815 cp[2], cp[3], cp2[0], cp2[1]);
816 else
817 snprintf(addr, INET6_ADDRSTRLEN + 9,
818 "%s.%d.%d", nfsv4_callbackaddr,
819 cp2[0], cp2[1]);
820 }
821 (void) nfsm_strtom(nd, addr, strlen(addr));
822 } else {
823 (void) nfsm_strtom(nd, "tcp", 3);
824 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
825 }
826 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
827 *tl = txdr_unsigned(clp->nfsc_cbident);
828 nd->nd_flag |= ND_USEGSSNAME;
829 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
830 NFS_PROG, NFS_VER4, NULL, 1, NULL);
831 if (error)
832 return (error);
833 if (nd->nd_repstat == 0) {
834 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
835 clp->nfsc_clientid.lval[0] = *tl++;
836 clp->nfsc_clientid.lval[1] = *tl++;
837 confirm.lval[0] = *tl++;
838 confirm.lval[1] = *tl;
839 mbuf_freem(nd->nd_mrep);
840 nd->nd_mrep = NULL;
841
842 /*
843 * and confirm it.
844 */
845 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL);
846 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
847 *tl++ = clp->nfsc_clientid.lval[0];
848 *tl++ = clp->nfsc_clientid.lval[1];
849 *tl++ = confirm.lval[0];
850 *tl = confirm.lval[1];
851 nd->nd_flag |= ND_USEGSSNAME;
852 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
853 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL);
854 if (error)
855 return (error);
856 mbuf_freem(nd->nd_mrep);
857 nd->nd_mrep = NULL;
858 if (nd->nd_repstat == 0) {
859 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
860 nmp->nm_fhsize, NULL);
861 NFSZERO_ATTRBIT(&attrbits);
862 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
863 (void) nfsrv_putattrbit(nd, &attrbits);
864 nd->nd_flag |= ND_USEGSSNAME;
865 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
866 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL);
867 if (error)
868 return (error);
869 if (nd->nd_repstat == 0) {
870 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
871 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
872 if (error)
873 goto nfsmout;
874 clp->nfsc_renew = NFSCL_RENEW(lease);
875 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
876 clp->nfsc_clientidrev++;
877 if (clp->nfsc_clientidrev == 0)
878 clp->nfsc_clientidrev++;
879 }
880 }
881 }
882 error = nd->nd_repstat;
883 nfsmout:
884 mbuf_freem(nd->nd_mrep);
885 return (error);
886 }
887
888 /*
889 * nfs getattr call.
890 */
891 APPLESTATIC int
892 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
893 struct nfsvattr *nap, void *stuff)
894 {
895 struct nfsrv_descript nfsd, *nd = &nfsd;
896 int error;
897 nfsattrbit_t attrbits;
898
899 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
900 if (nd->nd_flag & ND_NFSV4) {
901 NFSGETATTR_ATTRBIT(&attrbits);
902 (void) nfsrv_putattrbit(nd, &attrbits);
903 }
904 error = nfscl_request(nd, vp, p, cred, stuff);
905 if (error)
906 return (error);
907 if (!nd->nd_repstat)
908 error = nfsm_loadattr(nd, nap);
909 else
910 error = nd->nd_repstat;
911 mbuf_freem(nd->nd_mrep);
912 return (error);
913 }
914
915 /*
916 * nfs getattr call with non-vnode arguemnts.
917 */
918 APPLESTATIC int
919 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
920 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp)
921 {
922 struct nfsrv_descript nfsd, *nd = &nfsd;
923 int error, vers = NFS_VER2;
924 nfsattrbit_t attrbits;
925
926 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL);
927 if (nd->nd_flag & ND_NFSV4) {
928 vers = NFS_VER4;
929 NFSGETATTR_ATTRBIT(&attrbits);
930 (void) nfsrv_putattrbit(nd, &attrbits);
931 } else if (nd->nd_flag & ND_NFSV3) {
932 vers = NFS_VER3;
933 }
934 if (syscred)
935 nd->nd_flag |= ND_USEGSSNAME;
936 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
937 NFS_PROG, vers, NULL, 1, xidp);
938 if (error)
939 return (error);
940 if (!nd->nd_repstat)
941 error = nfsm_loadattr(nd, nap);
942 else
943 error = nd->nd_repstat;
944 mbuf_freem(nd->nd_mrep);
945 return (error);
946 }
947
948 /*
949 * Do an nfs setattr operation.
950 */
951 APPLESTATIC int
952 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
953 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
954 void *stuff)
955 {
956 int error, expireret = 0, openerr, retrycnt;
957 u_int32_t clidrev = 0, mode;
958 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
959 struct nfsfh *nfhp;
960 nfsv4stateid_t stateid;
961 void *lckp;
962
963 if (nmp->nm_clp != NULL)
964 clidrev = nmp->nm_clp->nfsc_clientidrev;
965 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
966 mode = NFSV4OPEN_ACCESSWRITE;
967 else
968 mode = NFSV4OPEN_ACCESSREAD;
969 retrycnt = 0;
970 do {
971 lckp = NULL;
972 openerr = 1;
973 if (NFSHASNFSV4(nmp)) {
974 nfhp = VTONFS(vp)->n_fhp;
975 error = nfscl_getstateid(vp, nfhp->nfh_fh,
976 nfhp->nfh_len, mode, cred, p, &stateid, &lckp);
977 if (error && vnode_vtype(vp) == VREG &&
978 (mode == NFSV4OPEN_ACCESSWRITE ||
979 nfstest_openallsetattr)) {
980 /*
981 * No Open stateid, so try and open the file
982 * now.
983 */
984 if (mode == NFSV4OPEN_ACCESSWRITE)
985 openerr = nfsrpc_open(vp, FWRITE, cred,
986 p);
987 else
988 openerr = nfsrpc_open(vp, FREAD, cred,
989 p);
990 if (!openerr)
991 (void) nfscl_getstateid(vp,
992 nfhp->nfh_fh, nfhp->nfh_len,
993 mode, cred, p, &stateid, &lckp);
994 }
995 }
996 if (vap != NULL)
997 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
998 rnap, attrflagp, stuff);
999 else
1000 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
1001 stuff);
1002 if (error == NFSERR_STALESTATEID)
1003 nfscl_initiate_recovery(nmp->nm_clp);
1004 if (lckp != NULL)
1005 nfscl_lockderef(lckp);
1006 if (!openerr)
1007 (void) nfsrpc_close(vp, 0, p);
1008 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1009 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1010 error == NFSERR_OLDSTATEID) {
1011 (void) nfs_catnap(PZERO, error, "nfs_setattr");
1012 } else if ((error == NFSERR_EXPIRED ||
1013 error == NFSERR_BADSTATEID) && clidrev != 0) {
1014 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1015 }
1016 retrycnt++;
1017 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1018 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1019 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1020 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1021 expireret == 0 && clidrev != 0 && retrycnt < 4));
1022 if (error && retrycnt >= 4)
1023 error = EIO;
1024 return (error);
1025 }
1026
1027 static int
1028 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1029 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1030 struct nfsvattr *rnap, int *attrflagp, void *stuff)
1031 {
1032 u_int32_t *tl;
1033 struct nfsrv_descript nfsd, *nd = &nfsd;
1034 int error;
1035 nfsattrbit_t attrbits;
1036
1037 *attrflagp = 0;
1038 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1039 if (nd->nd_flag & ND_NFSV4)
1040 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1041 vap->va_type = vnode_vtype(vp);
1042 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1043 if (nd->nd_flag & ND_NFSV3) {
1044 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1045 *tl = newnfs_false;
1046 } else if (nd->nd_flag & ND_NFSV4) {
1047 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1048 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1049 NFSGETATTR_ATTRBIT(&attrbits);
1050 (void) nfsrv_putattrbit(nd, &attrbits);
1051 }
1052 error = nfscl_request(nd, vp, p, cred, stuff);
1053 if (error)
1054 return (error);
1055 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1056 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1057 if ((nd->nd_flag & ND_NFSV4) && !error)
1058 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1059 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1060 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1061 mbuf_freem(nd->nd_mrep);
1062 if (nd->nd_repstat && !error)
1063 error = nd->nd_repstat;
1064 return (error);
1065 }
1066
1067 /*
1068 * nfs lookup rpc
1069 */
1070 APPLESTATIC int
1071 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1072 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1073 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1074 {
1075 u_int32_t *tl;
1076 struct nfsrv_descript nfsd, *nd = &nfsd;
1077 struct nfsmount *nmp;
1078 struct nfsnode *np;
1079 struct nfsfh *nfhp;
1080 nfsattrbit_t attrbits;
1081 int error = 0, lookupp = 0;
1082
1083 *attrflagp = 0;
1084 *dattrflagp = 0;
1085 if (vnode_vtype(dvp) != VDIR)
1086 return (ENOTDIR);
1087 nmp = VFSTONFS(vnode_mount(dvp));
1088 if (len > NFS_MAXNAMLEN)
1089 return (ENAMETOOLONG);
1090 if (NFSHASNFSV4(nmp) && len == 1 &&
1091 name[0] == '.') {
1092 /*
1093 * Just return the current dir's fh.
1094 */
1095 np = VTONFS(dvp);
1096 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1097 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1098 nfhp->nfh_len = np->n_fhp->nfh_len;
1099 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1100 *nfhpp = nfhp;
1101 return (0);
1102 }
1103 if (NFSHASNFSV4(nmp) && len == 2 &&
1104 name[0] == '.' && name[1] == '.') {
1105 lookupp = 1;
1106 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1107 } else {
1108 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1109 (void) nfsm_strtom(nd, name, len);
1110 }
1111 if (nd->nd_flag & ND_NFSV4) {
1112 NFSGETATTR_ATTRBIT(&attrbits);
1113 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1114 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1115 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1116 (void) nfsrv_putattrbit(nd, &attrbits);
1117 }
1118 error = nfscl_request(nd, dvp, p, cred, stuff);
1119 if (error)
1120 return (error);
1121 if (nd->nd_repstat) {
1122 /*
1123 * When an NFSv4 Lookupp returns ENOENT, it means that
1124 * the lookup is at the root of an fs, so return this dir.
1125 */
1126 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1127 np = VTONFS(dvp);
1128 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1129 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1130 nfhp->nfh_len = np->n_fhp->nfh_len;
1131 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1132 *nfhpp = nfhp;
1133 mbuf_freem(nd->nd_mrep);
1134 return (0);
1135 }
1136 if (nd->nd_flag & ND_NFSV3)
1137 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1138 goto nfsmout;
1139 }
1140 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1141 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1142 if (*(tl + 1)) {
1143 nd->nd_flag |= ND_NOMOREDATA;
1144 goto nfsmout;
1145 }
1146 }
1147 error = nfsm_getfh(nd, nfhpp);
1148 if (error)
1149 goto nfsmout;
1150
1151 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1152 if ((nd->nd_flag & ND_NFSV3) && !error)
1153 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1154 nfsmout:
1155 mbuf_freem(nd->nd_mrep);
1156 if (!error && nd->nd_repstat)
1157 error = nd->nd_repstat;
1158 return (error);
1159 }
1160
1161 /*
1162 * Do a readlink rpc.
1163 */
1164 APPLESTATIC int
1165 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1166 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1167 {
1168 u_int32_t *tl;
1169 struct nfsrv_descript nfsd, *nd = &nfsd;
1170 struct nfsnode *np = VTONFS(vp);
1171 nfsattrbit_t attrbits;
1172 int error, len, cangetattr = 1;
1173
1174 *attrflagp = 0;
1175 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1176 if (nd->nd_flag & ND_NFSV4) {
1177 /*
1178 * And do a Getattr op.
1179 */
1180 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1181 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1182 NFSGETATTR_ATTRBIT(&attrbits);
1183 (void) nfsrv_putattrbit(nd, &attrbits);
1184 }
1185 error = nfscl_request(nd, vp, p, cred, stuff);
1186 if (error)
1187 return (error);
1188 if (nd->nd_flag & ND_NFSV3)
1189 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1190 if (!nd->nd_repstat && !error) {
1191 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1192 /*
1193 * This seems weird to me, but must have been added to
1194 * FreeBSD for some reason. The only thing I can think of
1195 * is that there was/is some server that replies with
1196 * more link data than it should?
1197 */
1198 if (len == NFS_MAXPATHLEN) {
1199 NFSLOCKNODE(np);
1200 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1201 len = np->n_size;
1202 cangetattr = 0;
1203 }
1204 NFSUNLOCKNODE(np);
1205 }
1206 error = nfsm_mbufuio(nd, uiop, len);
1207 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1208 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1209 }
1210 if (nd->nd_repstat && !error)
1211 error = nd->nd_repstat;
1212 nfsmout:
1213 mbuf_freem(nd->nd_mrep);
1214 return (error);
1215 }
1216
1217 /*
1218 * Read operation.
1219 */
1220 APPLESTATIC int
1221 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1222 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1223 {
1224 int error, expireret = 0, retrycnt;
1225 u_int32_t clidrev = 0;
1226 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1227 struct nfsnode *np = VTONFS(vp);
1228 struct ucred *newcred;
1229 struct nfsfh *nfhp = NULL;
1230 nfsv4stateid_t stateid;
1231 void *lckp;
1232
1233 if (nmp->nm_clp != NULL)
1234 clidrev = nmp->nm_clp->nfsc_clientidrev;
1235 newcred = cred;
1236 if (NFSHASNFSV4(nmp)) {
1237 nfhp = np->n_fhp;
1238 newcred = NFSNEWCRED(cred);
1239 }
1240 retrycnt = 0;
1241 do {
1242 lckp = NULL;
1243 if (NFSHASNFSV4(nmp))
1244 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1245 NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp);
1246 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1247 attrflagp, stuff);
1248 if (error == NFSERR_STALESTATEID)
1249 nfscl_initiate_recovery(nmp->nm_clp);
1250 if (lckp != NULL)
1251 nfscl_lockderef(lckp);
1252 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1253 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1254 error == NFSERR_OLDSTATEID) {
1255 (void) nfs_catnap(PZERO, error, "nfs_read");
1256 } else if ((error == NFSERR_EXPIRED ||
1257 error == NFSERR_BADSTATEID) && clidrev != 0) {
1258 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1259 }
1260 retrycnt++;
1261 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1262 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1263 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1264 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1265 expireret == 0 && clidrev != 0 && retrycnt < 4));
1266 if (error && retrycnt >= 4)
1267 error = EIO;
1268 if (NFSHASNFSV4(nmp))
1269 NFSFREECRED(newcred);
1270 return (error);
1271 }
1272
1273 /*
1274 * The actual read RPC.
1275 */
1276 static int
1277 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1278 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1279 int *attrflagp, void *stuff)
1280 {
1281 u_int32_t *tl;
1282 int error = 0, len, retlen, tsiz, eof = 0;
1283 struct nfsrv_descript nfsd;
1284 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1285 struct nfsrv_descript *nd = &nfsd;
1286 int rsize;
1287 off_t tmp_off;
1288
1289 *attrflagp = 0;
1290 tsiz = uio_uio_resid(uiop);
1291 tmp_off = uiop->uio_offset + tsiz;
1292 NFSLOCKMNT(nmp);
1293 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1294 NFSUNLOCKMNT(nmp);
1295 return (EFBIG);
1296 }
1297 rsize = nmp->nm_rsize;
1298 NFSUNLOCKMNT(nmp);
1299 nd->nd_mrep = NULL;
1300 while (tsiz > 0) {
1301 *attrflagp = 0;
1302 len = (tsiz > rsize) ? rsize : tsiz;
1303 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1304 if (nd->nd_flag & ND_NFSV4)
1305 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1306 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1307 if (nd->nd_flag & ND_NFSV2) {
1308 *tl++ = txdr_unsigned(uiop->uio_offset);
1309 *tl++ = txdr_unsigned(len);
1310 *tl = 0;
1311 } else {
1312 txdr_hyper(uiop->uio_offset, tl);
1313 *(tl + 2) = txdr_unsigned(len);
1314 }
1315 /*
1316 * Since I can't do a Getattr for NFSv4 for Write, there
1317 * doesn't seem any point in doing one here, either.
1318 * (See the comment in nfsrpc_writerpc() for more info.)
1319 */
1320 error = nfscl_request(nd, vp, p, cred, stuff);
1321 if (error)
1322 return (error);
1323 if (nd->nd_flag & ND_NFSV3) {
1324 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1325 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1326 error = nfsm_loadattr(nd, nap);
1327 if (!error)
1328 *attrflagp = 1;
1329 }
1330 if (nd->nd_repstat || error) {
1331 if (!error)
1332 error = nd->nd_repstat;
1333 goto nfsmout;
1334 }
1335 if (nd->nd_flag & ND_NFSV3) {
1336 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1337 eof = fxdr_unsigned(int, *(tl + 1));
1338 } else if (nd->nd_flag & ND_NFSV4) {
1339 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1340 eof = fxdr_unsigned(int, *tl);
1341 }
1342 NFSM_STRSIZ(retlen, rsize);
1343 error = nfsm_mbufuio(nd, uiop, retlen);
1344 if (error)
1345 goto nfsmout;
1346 mbuf_freem(nd->nd_mrep);
1347 nd->nd_mrep = NULL;
1348 tsiz -= retlen;
1349 if (!(nd->nd_flag & ND_NFSV2)) {
1350 if (eof || retlen == 0)
1351 tsiz = 0;
1352 } else if (retlen < len)
1353 tsiz = 0;
1354 }
1355 return (0);
1356 nfsmout:
1357 if (nd->nd_mrep != NULL)
1358 mbuf_freem(nd->nd_mrep);
1359 return (error);
1360 }
1361
1362 /*
1363 * nfs write operation
1364 * When called_from_strategy != 0, it should return EIO for an error that
1365 * indicates recovery is in progress, so that the buffer will be left
1366 * dirty and be written back to the server later. If it loops around,
1367 * the recovery thread could get stuck waiting for the buffer and recovery
1368 * will then deadlock.
1369 */
1370 APPLESTATIC int
1371 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
1372 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1373 void *stuff, int called_from_strategy)
1374 {
1375 int error, expireret = 0, retrycnt, nostateid;
1376 u_int32_t clidrev = 0;
1377 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1378 struct nfsnode *np = VTONFS(vp);
1379 struct ucred *newcred;
1380 struct nfsfh *nfhp = NULL;
1381 nfsv4stateid_t stateid;
1382 void *lckp;
1383
1384 *must_commit = 0;
1385 if (nmp->nm_clp != NULL)
1386 clidrev = nmp->nm_clp->nfsc_clientidrev;
1387 newcred = cred;
1388 if (NFSHASNFSV4(nmp)) {
1389 newcred = NFSNEWCRED(cred);
1390 nfhp = np->n_fhp;
1391 }
1392 retrycnt = 0;
1393 do {
1394 lckp = NULL;
1395 nostateid = 0;
1396 if (NFSHASNFSV4(nmp)) {
1397 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1398 NFSV4OPEN_ACCESSWRITE, newcred, p, &stateid, &lckp);
1399 if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1400 stateid.other[2] == 0) {
1401 nostateid = 1;
1402 NFSCL_DEBUG(1, "stateid0 in write\n");
1403 }
1404 }
1405
1406 /*
1407 * If there is no stateid for NFSv4, it means this is an
1408 * extraneous write after close. Basically a poorly
1409 * implemented buffer cache. Just don't do the write.
1410 */
1411 if (nostateid)
1412 error = 0;
1413 else
1414 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
1415 newcred, &stateid, p, nap, attrflagp, stuff);
1416 if (error == NFSERR_STALESTATEID)
1417 nfscl_initiate_recovery(nmp->nm_clp);
1418 if (lckp != NULL)
1419 nfscl_lockderef(lckp);
1420 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1421 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1422 error == NFSERR_OLDSTATEID) {
1423 (void) nfs_catnap(PZERO, error, "nfs_write");
1424 } else if ((error == NFSERR_EXPIRED ||
1425 error == NFSERR_BADSTATEID) && clidrev != 0) {
1426 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1427 }
1428 retrycnt++;
1429 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1430 ((error == NFSERR_STALESTATEID ||
1431 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1432 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1433 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1434 expireret == 0 && clidrev != 0 && retrycnt < 4));
1435 if (error != 0 && (retrycnt >= 4 ||
1436 ((error == NFSERR_STALESTATEID ||
1437 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1438 error = EIO;
1439 if (NFSHASNFSV4(nmp))
1440 NFSFREECRED(newcred);
1441 return (error);
1442 }
1443
1444 /*
1445 * The actual write RPC.
1446 */
1447 static int
1448 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1449 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
1450 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1451 {
1452 u_int32_t *tl;
1453 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1454 struct nfsnode *np = VTONFS(vp);
1455 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1456 int wccflag = 0, wsize;
1457 int32_t backup;
1458 struct nfsrv_descript nfsd;
1459 struct nfsrv_descript *nd = &nfsd;
1460 nfsattrbit_t attrbits;
1461 off_t tmp_off;
1462
1463 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1464 *attrflagp = 0;
1465 tsiz = uio_uio_resid(uiop);
1466 tmp_off = uiop->uio_offset + tsiz;
1467 NFSLOCKMNT(nmp);
1468 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1469 NFSUNLOCKMNT(nmp);
1470 return (EFBIG);
1471 }
1472 wsize = nmp->nm_wsize;
1473 NFSUNLOCKMNT(nmp);
1474 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */
1475 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */
1476 while (tsiz > 0) {
1477 *attrflagp = 0;
1478 len = (tsiz > wsize) ? wsize : tsiz;
1479 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1480 if (nd->nd_flag & ND_NFSV4) {
1481 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1482 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1483 txdr_hyper(uiop->uio_offset, tl);
1484 tl += 2;
1485 *tl++ = txdr_unsigned(*iomode);
1486 *tl = txdr_unsigned(len);
1487 } else if (nd->nd_flag & ND_NFSV3) {
1488 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1489 txdr_hyper(uiop->uio_offset, tl);
1490 tl += 2;
1491 *tl++ = txdr_unsigned(len);
1492 *tl++ = txdr_unsigned(*iomode);
1493 *tl = txdr_unsigned(len);
1494 } else {
1495 u_int32_t x;
1496
1497 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1498 /*
1499 * Not sure why someone changed this, since the
1500 * RFC clearly states that "beginoffset" and
1501 * "totalcount" are ignored, but it wouldn't
1502 * surprise me if there's a busted server out there.
1503 */
1504 /* Set both "begin" and "current" to non-garbage. */
1505 x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1506 *tl++ = x; /* "begin offset" */
1507 *tl++ = x; /* "current offset" */
1508 x = txdr_unsigned(len);
1509 *tl++ = x; /* total to this offset */
1510 *tl = x; /* size of this write */
1511
1512 }
1513 nfsm_uiombuf(nd, uiop, len);
1514 /*
1515 * Although it is tempting to do a normal Getattr Op in the
1516 * NFSv4 compound, the result can be a nearly hung client
1517 * system if the Getattr asks for Owner and/or OwnerGroup.
1518 * It occurs when the client can't map either the Owner or
1519 * Owner_group name in the Getattr reply to a uid/gid. When
1520 * there is a cache miss, the kernel does an upcall to the
1521 * nfsuserd. Then, it can try and read the local /etc/passwd
1522 * or /etc/group file. It can then block in getnewbuf(),
1523 * waiting for dirty writes to be pushed to the NFS server.
1524 * The only reason this doesn't result in a complete
1525 * deadlock, is that the upcall times out and allows
1526 * the write to complete. However, progress is so slow
1527 * that it might just as well be deadlocked.
1528 * As such, we get the rest of the attributes, but not
1529 * Owner or Owner_group.
1530 * nb: nfscl_loadattrcache() needs to be told that these
1531 * partial attributes from a write rpc are being
1532 * passed in, via a argument flag.
1533 */
1534 if (nd->nd_flag & ND_NFSV4) {
1535 NFSWRITEGETATTR_ATTRBIT(&attrbits);
1536 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1537 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1538 (void) nfsrv_putattrbit(nd, &attrbits);
1539 }
1540 error = nfscl_request(nd, vp, p, cred, stuff);
1541 if (error)
1542 return (error);
1543 if (nd->nd_repstat) {
1544 /*
1545 * In case the rpc gets retried, roll
1546 * the uio fileds changed by nfsm_uiombuf()
1547 * back.
1548 */
1549 uiop->uio_offset -= len;
1550 uio_uio_resid_add(uiop, len);
1551 uio_iov_base_add(uiop, -len);
1552 uio_iov_len_add(uiop, len);
1553 }
1554 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1555 error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1556 &wccflag, stuff);
1557 if (error)
1558 goto nfsmout;
1559 }
1560 if (!nd->nd_repstat) {
1561 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1562 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1563 + NFSX_VERF);
1564 rlen = fxdr_unsigned(int, *tl++);
1565 if (rlen == 0) {
1566 error = NFSERR_IO;
1567 goto nfsmout;
1568 } else if (rlen < len) {
1569 backup = len - rlen;
1570 uio_iov_base_add(uiop, -(backup));
1571 uio_iov_len_add(uiop, backup);
1572 uiop->uio_offset -= backup;
1573 uio_uio_resid_add(uiop, backup);
1574 len = rlen;
1575 }
1576 commit = fxdr_unsigned(int, *tl++);
1577
1578 /*
1579 * Return the lowest committment level
1580 * obtained by any of the RPCs.
1581 */
1582 if (committed == NFSWRITE_FILESYNC)
1583 committed = commit;
1584 else if (committed == NFSWRITE_DATASYNC &&
1585 commit == NFSWRITE_UNSTABLE)
1586 committed = commit;
1587 NFSLOCKMNT(nmp);
1588 if (!NFSHASWRITEVERF(nmp)) {
1589 NFSBCOPY((caddr_t)tl,
1590 (caddr_t)&nmp->nm_verf[0],
1591 NFSX_VERF);
1592 NFSSETWRITEVERF(nmp);
1593 } else if (NFSBCMP(tl, nmp->nm_verf,
1594 NFSX_VERF)) {
1595 *must_commit = 1;
1596 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
1597 }
1598 NFSUNLOCKMNT(nmp);
1599 }
1600 if (nd->nd_flag & ND_NFSV4)
1601 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1602 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1603 error = nfsm_loadattr(nd, nap);
1604 if (!error)
1605 *attrflagp = NFS_LATTR_NOSHRINK;
1606 }
1607 } else {
1608 error = nd->nd_repstat;
1609 }
1610 if (error)
1611 goto nfsmout;
1612 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4));
1613 mbuf_freem(nd->nd_mrep);
1614 nd->nd_mrep = NULL;
1615 tsiz -= len;
1616 }
1617 nfsmout:
1618 if (nd->nd_mrep != NULL)
1619 mbuf_freem(nd->nd_mrep);
1620 *iomode = committed;
1621 if (nd->nd_repstat && !error)
1622 error = nd->nd_repstat;
1623 return (error);
1624 }
1625
1626 /*
1627 * nfs mknod rpc
1628 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1629 * mode set to specify the file type and the size field for rdev.
1630 */
1631 APPLESTATIC int
1632 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1633 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1634 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1635 int *attrflagp, int *dattrflagp, void *dstuff)
1636 {
1637 u_int32_t *tl;
1638 int error = 0;
1639 struct nfsrv_descript nfsd, *nd = &nfsd;
1640 nfsattrbit_t attrbits;
1641
1642 *nfhpp = NULL;
1643 *attrflagp = 0;
1644 *dattrflagp = 0;
1645 if (namelen > NFS_MAXNAMLEN)
1646 return (ENAMETOOLONG);
1647 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1648 if (nd->nd_flag & ND_NFSV4) {
1649 if (vtyp == VBLK || vtyp == VCHR) {
1650 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1651 *tl++ = vtonfsv34_type(vtyp);
1652 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1653 *tl = txdr_unsigned(NFSMINOR(rdev));
1654 } else {
1655 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1656 *tl = vtonfsv34_type(vtyp);
1657 }
1658 }
1659 (void) nfsm_strtom(nd, name, namelen);
1660 if (nd->nd_flag & ND_NFSV3) {
1661 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1662 *tl = vtonfsv34_type(vtyp);
1663 }
1664 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1665 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1666 if ((nd->nd_flag & ND_NFSV3) &&
1667 (vtyp == VCHR || vtyp == VBLK)) {
1668 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1669 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1670 *tl = txdr_unsigned(NFSMINOR(rdev));
1671 }
1672 if (nd->nd_flag & ND_NFSV4) {
1673 NFSGETATTR_ATTRBIT(&attrbits);
1674 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1675 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1676 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1677 (void) nfsrv_putattrbit(nd, &attrbits);
1678 }
1679 if (nd->nd_flag & ND_NFSV2)
1680 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
1681 error = nfscl_request(nd, dvp, p, cred, dstuff);
1682 if (error)
1683 return (error);
1684 if (nd->nd_flag & ND_NFSV4)
1685 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1686 if (!nd->nd_repstat) {
1687 if (nd->nd_flag & ND_NFSV4) {
1688 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1689 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1690 if (error)
1691 goto nfsmout;
1692 }
1693 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1694 if (error)
1695 goto nfsmout;
1696 }
1697 if (nd->nd_flag & ND_NFSV3)
1698 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1699 if (!error && nd->nd_repstat)
1700 error = nd->nd_repstat;
1701 nfsmout:
1702 mbuf_freem(nd->nd_mrep);
1703 return (error);
1704 }
1705
1706 /*
1707 * nfs file create call
1708 * Mostly just call the approriate routine. (I separated out v4, so that
1709 * error recovery wouldn't be as difficult.)
1710 */
1711 APPLESTATIC int
1712 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1713 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1714 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1715 int *attrflagp, int *dattrflagp, void *dstuff)
1716 {
1717 int error = 0, newone, expireret = 0, retrycnt, unlocked;
1718 struct nfsclowner *owp;
1719 struct nfscldeleg *dp;
1720 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
1721 u_int32_t clidrev;
1722
1723 if (NFSHASNFSV4(nmp)) {
1724 retrycnt = 0;
1725 do {
1726 dp = NULL;
1727 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
1728 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
1729 NULL, 1);
1730 if (error)
1731 return (error);
1732 if (nmp->nm_clp != NULL)
1733 clidrev = nmp->nm_clp->nfsc_clientidrev;
1734 else
1735 clidrev = 0;
1736 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
1737 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1738 dstuff, &unlocked);
1739 /*
1740 * There is no need to invalidate cached attributes here,
1741 * since new post-delegation issue attributes are always
1742 * returned by nfsrpc_createv4() and these will update the
1743 * attribute cache.
1744 */
1745 if (dp != NULL)
1746 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
1747 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
1748 nfscl_ownerrelease(owp, error, newone, unlocked);
1749 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1750 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) {
1751 (void) nfs_catnap(PZERO, error, "nfs_open");
1752 } else if ((error == NFSERR_EXPIRED ||
1753 error == NFSERR_BADSTATEID) && clidrev != 0) {
1754 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1755 retrycnt++;
1756 }
1757 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1758 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1759 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1760 expireret == 0 && clidrev != 0 && retrycnt < 4));
1761 if (error && retrycnt >= 4)
1762 error = EIO;
1763 } else {
1764 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
1765 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1766 dstuff);
1767 }
1768 return (error);
1769 }
1770
1771 /*
1772 * The create rpc for v2 and 3.
1773 */
1774 static int
1775 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1776 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1777 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1778 int *attrflagp, int *dattrflagp, void *dstuff)
1779 {
1780 u_int32_t *tl;
1781 int error = 0;
1782 struct nfsrv_descript nfsd, *nd = &nfsd;
1783
1784 *nfhpp = NULL;
1785 *attrflagp = 0;
1786 *dattrflagp = 0;
1787 if (namelen > NFS_MAXNAMLEN)
1788 return (ENAMETOOLONG);
1789 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1790 (void) nfsm_strtom(nd, name, namelen);
1791 if (nd->nd_flag & ND_NFSV3) {
1792 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1793 if (fmode & O_EXCL) {
1794 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1795 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1796 *tl++ = cverf.lval[0];
1797 *tl = cverf.lval[1];
1798 } else {
1799 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1800 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1801 }
1802 } else {
1803 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
1804 }
1805 error = nfscl_request(nd, dvp, p, cred, dstuff);
1806 if (error)
1807 return (error);
1808 if (nd->nd_repstat == 0) {
1809 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1810 if (error)
1811 goto nfsmout;
1812 }
1813 if (nd->nd_flag & ND_NFSV3)
1814 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1815 if (nd->nd_repstat != 0 && error == 0)
1816 error = nd->nd_repstat;
1817 nfsmout:
1818 mbuf_freem(nd->nd_mrep);
1819 return (error);
1820 }
1821
1822 static int
1823 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1824 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
1825 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
1826 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
1827 int *dattrflagp, void *dstuff, int *unlockedp)
1828 {
1829 u_int32_t *tl;
1830 int error = 0, deleg, newone, ret, acesize, limitby;
1831 struct nfsrv_descript nfsd, *nd = &nfsd;
1832 struct nfsclopen *op;
1833 struct nfscldeleg *dp = NULL;
1834 struct nfsnode *np;
1835 struct nfsfh *nfhp;
1836 nfsattrbit_t attrbits;
1837 nfsv4stateid_t stateid;
1838 u_int32_t rflags;
1839
1840 *unlockedp = 0;
1841 *nfhpp = NULL;
1842 *dpp = NULL;
1843 *attrflagp = 0;
1844 *dattrflagp = 0;
1845 if (namelen > NFS_MAXNAMLEN)
1846 return (ENAMETOOLONG);
1847 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1848 /*
1849 * For V4, this is actually an Open op.
1850 */
1851 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1852 *tl++ = txdr_unsigned(owp->nfsow_seqid);
1853 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
1854 NFSV4OPEN_ACCESSREAD);
1855 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
1856 *tl++ = owp->nfsow_clp->nfsc_clientid.lval[0];
1857 *tl = owp->nfsow_clp->nfsc_clientid.lval[1];
1858 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
1859 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1860 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
1861 if (fmode & O_EXCL) {
1862 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1863 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1864 *tl++ = cverf.lval[0];
1865 *tl = cverf.lval[1];
1866 } else {
1867 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1868 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1869 }
1870 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1871 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
1872 (void) nfsm_strtom(nd, name, namelen);
1873 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1874 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1875 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1876 NFSGETATTR_ATTRBIT(&attrbits);
1877 (void) nfsrv_putattrbit(nd, &attrbits);
1878 error = nfscl_request(nd, dvp, p, cred, dstuff);
1879 if (error)
1880 return (error);
1881 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1882 if (error)
1883 goto nfsmout;
1884 NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
1885 if (nd->nd_repstat == 0) {
1886 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
1887 6 * NFSX_UNSIGNED);
1888 stateid.seqid = *tl++;
1889 stateid.other[0] = *tl++;
1890 stateid.other[1] = *tl++;
1891 stateid.other[2] = *tl;
1892 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
1893 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1894 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1895 deleg = fxdr_unsigned(int, *tl);
1896 if (deleg == NFSV4OPEN_DELEGATEREAD ||
1897 deleg == NFSV4OPEN_DELEGATEWRITE) {
1898 if (!(owp->nfsow_clp->nfsc_flags &
1899 NFSCLFLAGS_FIRSTDELEG))
1900 owp->nfsow_clp->nfsc_flags |=
1901 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
1902 MALLOC(dp, struct nfscldeleg *,
1903 sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
1904 M_NFSCLDELEG, M_WAITOK);
1905 LIST_INIT(&dp->nfsdl_owner);
1906 LIST_INIT(&dp->nfsdl_lock);
1907 dp->nfsdl_clp = owp->nfsow_clp;
1908 newnfs_copyincred(cred, &dp->nfsdl_cred);
1909 nfscl_lockinit(&dp->nfsdl_rwlock);
1910 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
1911 NFSX_UNSIGNED);
1912 dp->nfsdl_stateid.seqid = *tl++;
1913 dp->nfsdl_stateid.other[0] = *tl++;
1914 dp->nfsdl_stateid.other[1] = *tl++;
1915 dp->nfsdl_stateid.other[2] = *tl++;
1916 ret = fxdr_unsigned(int, *tl);
1917 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
1918 dp->nfsdl_flags = NFSCLDL_WRITE;
1919 /*
1920 * Indicates how much the file can grow.
1921 */
1922 NFSM_DISSECT(tl, u_int32_t *,
1923 3 * NFSX_UNSIGNED);
1924 limitby = fxdr_unsigned(int, *tl++);
1925 switch (limitby) {
1926 case NFSV4OPEN_LIMITSIZE:
1927 dp->nfsdl_sizelimit = fxdr_hyper(tl);
1928 break;
1929 case NFSV4OPEN_LIMITBLOCKS:
1930 dp->nfsdl_sizelimit =
1931 fxdr_unsigned(u_int64_t, *tl++);
1932 dp->nfsdl_sizelimit *=
1933 fxdr_unsigned(u_int64_t, *tl);
1934 break;
1935 default:
1936 error = NFSERR_BADXDR;
1937 goto nfsmout;
1938 };
1939 } else {
1940 dp->nfsdl_flags = NFSCLDL_READ;
1941 }
1942 if (ret)
1943 dp->nfsdl_flags |= NFSCLDL_RECALL;
1944 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
1945 &acesize, p);
1946 if (error)
1947 goto nfsmout;
1948 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
1949 error = NFSERR_BADXDR;
1950 goto nfsmout;
1951 }
1952 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1953 if (error)
1954 goto nfsmout;
1955 if (dp != NULL && *attrflagp) {
1956 dp->nfsdl_change = nnap->na_filerev;
1957 dp->nfsdl_modtime = nnap->na_mtime;
1958 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
1959 }
1960 /*
1961 * We can now complete the Open state.
1962 */
1963 nfhp = *nfhpp;
1964 if (dp != NULL) {
1965 dp->nfsdl_fhlen = nfhp->nfh_len;
1966 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
1967 }
1968 /*
1969 * Get an Open structure that will be
1970 * attached to the OpenOwner, acquired already.
1971 */
1972 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
1973 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
1974 cred, p, NULL, &op, &newone, NULL, 0);
1975 if (error)
1976 goto nfsmout;
1977 op->nfso_stateid = stateid;
1978 newnfs_copyincred(cred, &op->nfso_cred);
1979 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
1980 do {
1981 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
1982 nfhp->nfh_len, op, cred, p);
1983 if (ret == NFSERR_DELAY)
1984 (void) nfs_catnap(PZERO, ret, "nfs_create");
1985 } while (ret == NFSERR_DELAY);
1986 error = ret;
1987 }
1988
1989 /*
1990 * If the server is handing out delegations, but we didn't
1991 * get one because an OpenConfirm was required, try the
1992 * Open again, to get a delegation. This is a harmless no-op,
1993 * from a server's point of view.
1994 */
1995 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
1996 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
1997 !error && dp == NULL) {
1998 np = VTONFS(dvp);
1999 do {
2000 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp,
2001 np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
2002 nfhp->nfh_fh, nfhp->nfh_len,
2003 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
2004 name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
2005 if (ret == NFSERR_DELAY)
2006 (void) nfs_catnap(PZERO, ret, "nfs_crt2");
2007 } while (ret == NFSERR_DELAY);
2008 if (ret) {
2009 if (dp != NULL)
2010 FREE((caddr_t)dp, M_NFSCLDELEG);
2011 if (ret == NFSERR_STALECLIENTID ||
2012 ret == NFSERR_STALEDONTRECOVER)
2013 error = ret;
2014 }
2015 }
2016 nfscl_openrelease(op, error, newone);
2017 *unlockedp = 1;
2018 }
2019 if (nd->nd_repstat != 0 && error == 0)
2020 error = nd->nd_repstat;
2021 if (error == NFSERR_STALECLIENTID)
2022 nfscl_initiate_recovery(owp->nfsow_clp);
2023 nfsmout:
2024 if (!error)
2025 *dpp = dp;
2026 else if (dp != NULL)
2027 FREE((caddr_t)dp, M_NFSCLDELEG);
2028 mbuf_freem(nd->nd_mrep);
2029 return (error);
2030 }
2031
2032 /*
2033 * Nfs remove rpc
2034 */
2035 APPLESTATIC int
2036 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2037 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2038 void *dstuff)
2039 {
2040 u_int32_t *tl;
2041 struct nfsrv_descript nfsd, *nd = &nfsd;
2042 struct nfsnode *np;
2043 struct nfsmount *nmp;
2044 nfsv4stateid_t dstateid;
2045 int error, ret = 0, i;
2046
2047 *dattrflagp = 0;
2048 if (namelen > NFS_MAXNAMLEN)
2049 return (ENAMETOOLONG);
2050 nmp = VFSTONFS(vnode_mount(dvp));
2051 tryagain:
2052 if (NFSHASNFSV4(nmp) && ret == 0) {
2053 ret = nfscl_removedeleg(vp, p, &dstateid);
2054 if (ret == 1) {
2055 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2056 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2057 NFSX_UNSIGNED);
2058 *tl++ = dstateid.seqid;
2059 *tl++ = dstateid.other[0];
2060 *tl++ = dstateid.other[1];
2061 *tl++ = dstateid.other[2];
2062 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2063 np = VTONFS(dvp);
2064 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2065 np->n_fhp->nfh_len, 0);
2066 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2067 *tl = txdr_unsigned(NFSV4OP_REMOVE);
2068 }
2069 } else {
2070 ret = 0;
2071 }
2072 if (ret == 0)
2073 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2074 (void) nfsm_strtom(nd, name, namelen);
2075 error = nfscl_request(nd, dvp, p, cred, dstuff);
2076 if (error)
2077 return (error);
2078 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2079 /* For NFSv4, parse out any Delereturn replies. */
2080 if (ret > 0 && nd->nd_repstat != 0 &&
2081 (nd->nd_flag & ND_NOMOREDATA)) {
2082 /*
2083 * If the Delegreturn failed, try again without
2084 * it. The server will Recall, as required.
2085 */
2086 mbuf_freem(nd->nd_mrep);
2087 goto tryagain;
2088 }
2089 for (i = 0; i < (ret * 2); i++) {
2090 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2091 ND_NFSV4) {
2092 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2093 if (*(tl + 1))
2094 nd->nd_flag |= ND_NOMOREDATA;
2095 }
2096 }
2097 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2098 }
2099 if (nd->nd_repstat && !error)
2100 error = nd->nd_repstat;
2101 nfsmout:
2102 mbuf_freem(nd->nd_mrep);
2103 return (error);
2104 }
2105
2106 /*
2107 * Do an nfs rename rpc.
2108 */
2109 APPLESTATIC int
2110 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2111 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2112 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2113 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2114 {
2115 u_int32_t *tl;
2116 struct nfsrv_descript nfsd, *nd = &nfsd;
2117 struct nfsmount *nmp;
2118 struct nfsnode *np;
2119 nfsattrbit_t attrbits;
2120 nfsv4stateid_t fdstateid, tdstateid;
2121 int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2122
2123 *fattrflagp = 0;
2124 *tattrflagp = 0;
2125 nmp = VFSTONFS(vnode_mount(fdvp));
2126 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2127 return (ENAMETOOLONG);
2128 tryagain:
2129 if (NFSHASNFSV4(nmp) && ret == 0) {
2130 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2131 &tdstateid, &gottd, p);
2132 if (gotfd && gottd) {
2133 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2134 } else if (gotfd) {
2135 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2136 } else if (gottd) {
2137 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2138 }
2139 if (gotfd) {
2140 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2141 *tl++ = fdstateid.seqid;
2142 *tl++ = fdstateid.other[0];
2143 *tl++ = fdstateid.other[1];
2144 *tl = fdstateid.other[2];
2145 if (gottd) {
2146 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2147 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2148 np = VTONFS(tvp);
2149 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2150 np->n_fhp->nfh_len, 0);
2151 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2152 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2153 }
2154 }
2155 if (gottd) {
2156 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2157 *tl++ = tdstateid.seqid;
2158 *tl++ = tdstateid.other[0];
2159 *tl++ = tdstateid.other[1];
2160 *tl = tdstateid.other[2];
2161 }
2162 if (ret > 0) {
2163 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2164 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2165 np = VTONFS(fdvp);
2166 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2167 np->n_fhp->nfh_len, 0);
2168 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2169 *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2170 }
2171 } else {
2172 ret = 0;
2173 }
2174 if (ret == 0)
2175 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2176 if (nd->nd_flag & ND_NFSV4) {
2177 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2178 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2179 NFSWCCATTR_ATTRBIT(&attrbits);
2180 (void) nfsrv_putattrbit(nd, &attrbits);
2181 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2182 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2183 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2184 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2185 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2186 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2187 (void) nfsrv_putattrbit(nd, &attrbits);
2188 nd->nd_flag |= ND_V4WCCATTR;
2189 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2190 *tl = txdr_unsigned(NFSV4OP_RENAME);
2191 }
2192 (void) nfsm_strtom(nd, fnameptr, fnamelen);
2193 if (!(nd->nd_flag & ND_NFSV4))
2194 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2195 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2196 (void) nfsm_strtom(nd, tnameptr, tnamelen);
2197 error = nfscl_request(nd, fdvp, p, cred, fstuff);
2198 if (error)
2199 return (error);
2200 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2201 /* For NFSv4, parse out any Delereturn replies. */
2202 if (ret > 0 && nd->nd_repstat != 0 &&
2203 (nd->nd_flag & ND_NOMOREDATA)) {
2204 /*
2205 * If the Delegreturn failed, try again without
2206 * it. The server will Recall, as required.
2207 */
2208 mbuf_freem(nd->nd_mrep);
2209 goto tryagain;
2210 }
2211 for (i = 0; i < (ret * 2); i++) {
2212 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2213 ND_NFSV4) {
2214 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2215 if (*(tl + 1)) {
2216 if (i == 0 && ret > 1) {
2217 /*
2218 * If the Delegreturn failed, try again
2219 * without it. The server will Recall, as
2220 * required.
2221 * If ret > 1, the first iteration of this
2222 * loop is the second DelegReturn result.
2223 */
2224 mbuf_freem(nd->nd_mrep);
2225 goto tryagain;
2226 } else {
2227 nd->nd_flag |= ND_NOMOREDATA;
2228 }
2229 }
2230 }
2231 }
2232 /* Now, the first wcc attribute reply. */
2233 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2234 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2235 if (*(tl + 1))
2236 nd->nd_flag |= ND_NOMOREDATA;
2237 }
2238 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2239 fstuff);
2240 /* and the second wcc attribute reply. */
2241 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2242 !error) {
2243 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2244 if (*(tl + 1))
2245 nd->nd_flag |= ND_NOMOREDATA;
2246 }
2247 if (!error)
2248 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2249 NULL, tstuff);
2250 }
2251 if (nd->nd_repstat && !error)
2252 error = nd->nd_repstat;
2253 nfsmout:
2254 mbuf_freem(nd->nd_mrep);
2255 return (error);
2256 }
2257
2258 /*
2259 * nfs hard link create rpc
2260 */
2261 APPLESTATIC int
2262 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2263 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2264 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2265 {
2266 u_int32_t *tl;
2267 struct nfsrv_descript nfsd, *nd = &nfsd;
2268 nfsattrbit_t attrbits;
2269 int error = 0;
2270
2271 *attrflagp = 0;
2272 *dattrflagp = 0;
2273 if (namelen > NFS_MAXNAMLEN)
2274 return (ENAMETOOLONG);
2275 NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2276 if (nd->nd_flag & ND_NFSV4) {
2277 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2278 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2279 }
2280 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2281 VTONFS(dvp)->n_fhp->nfh_len, 0);
2282 if (nd->nd_flag & ND_NFSV4) {
2283 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2284 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2285 NFSWCCATTR_ATTRBIT(&attrbits);
2286 (void) nfsrv_putattrbit(nd, &attrbits);
2287 nd->nd_flag |= ND_V4WCCATTR;
2288 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2289 *tl = txdr_unsigned(NFSV4OP_LINK);
2290 }
2291 (void) nfsm_strtom(nd, name, namelen);
2292 error = nfscl_request(nd, vp, p, cred, dstuff);
2293 if (error)
2294 return (error);
2295 if (nd->nd_flag & ND_NFSV3) {
2296 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2297 if (!error)
2298 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2299 NULL, dstuff);
2300 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2301 /*
2302 * First, parse out the PutFH and Getattr result.
2303 */
2304 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2305 if (!(*(tl + 1)))
2306 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2307 if (*(tl + 1))
2308 nd->nd_flag |= ND_NOMOREDATA;
2309 /*
2310 * Get the pre-op attributes.
2311 */
2312 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2313 }
2314 if (nd->nd_repstat && !error)
2315 error = nd->nd_repstat;
2316 nfsmout:
2317 mbuf_freem(nd->nd_mrep);
2318 return (error);
2319 }
2320
2321 /*
2322 * nfs symbolic link create rpc
2323 */
2324 APPLESTATIC int
2325 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target,
2326 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2327 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2328 int *dattrflagp, void *dstuff)
2329 {
2330 u_int32_t *tl;
2331 struct nfsrv_descript nfsd, *nd = &nfsd;
2332 struct nfsmount *nmp;
2333 int slen, error = 0;
2334
2335 *nfhpp = NULL;
2336 *attrflagp = 0;
2337 *dattrflagp = 0;
2338 nmp = VFSTONFS(vnode_mount(dvp));
2339 slen = strlen(target);
2340 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2341 return (ENAMETOOLONG);
2342 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2343 if (nd->nd_flag & ND_NFSV4) {
2344 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2345 *tl = txdr_unsigned(NFLNK);
2346 (void) nfsm_strtom(nd, target, slen);
2347 }
2348 (void) nfsm_strtom(nd, name, namelen);
2349 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2350 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2351 if (!(nd->nd_flag & ND_NFSV4))
2352 (void) nfsm_strtom(nd, target, slen);
2353 if (nd->nd_flag & ND_NFSV2)
2354 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2355 error = nfscl_request(nd, dvp, p, cred, dstuff);
2356 if (error)
2357 return (error);
2358 if (nd->nd_flag & ND_NFSV4)
2359 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2360 if ((nd->nd_flag & ND_NFSV3) && !error) {
2361 if (!nd->nd_repstat)
2362 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2363 if (!error)
2364 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2365 NULL, dstuff);
2366 }
2367 if (nd->nd_repstat && !error)
2368 error = nd->nd_repstat;
2369 mbuf_freem(nd->nd_mrep);
2370 /*
2371 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2372 */
2373 if (error == EEXIST)
2374 error = 0;
2375 return (error);
2376 }
2377
2378 /*
2379 * nfs make dir rpc
2380 */
2381 APPLESTATIC int
2382 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2383 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2384 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2385 int *dattrflagp, void *dstuff)
2386 {
2387 u_int32_t *tl;
2388 struct nfsrv_descript nfsd, *nd = &nfsd;
2389 nfsattrbit_t attrbits;
2390 int error = 0;
2391
2392 *nfhpp = NULL;
2393 *attrflagp = 0;
2394 *dattrflagp = 0;
2395 if (namelen > NFS_MAXNAMLEN)
2396 return (ENAMETOOLONG);
2397 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2398 if (nd->nd_flag & ND_NFSV4) {
2399 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2400 *tl = txdr_unsigned(NFDIR);
2401 }
2402 (void) nfsm_strtom(nd, name, namelen);
2403 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2404 if (nd->nd_flag & ND_NFSV4) {
2405 NFSGETATTR_ATTRBIT(&attrbits);
2406 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2407 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2408 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2409 (void) nfsrv_putattrbit(nd, &attrbits);
2410 }
2411 error = nfscl_request(nd, dvp, p, cred, dstuff);
2412 if (error)
2413 return (error);
2414 if (nd->nd_flag & ND_NFSV4)
2415 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2416 if (!nd->nd_repstat && !error) {
2417 if (nd->nd_flag & ND_NFSV4) {
2418 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2419 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2420 }
2421 if (!error)
2422 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2423 }
2424 if ((nd->nd_flag & ND_NFSV3) && !error)
2425 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2426 if (nd->nd_repstat && !error)
2427 error = nd->nd_repstat;
2428 nfsmout:
2429 mbuf_freem(nd->nd_mrep);
2430 /*
2431 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry.
2432 */
2433 if (error == EEXIST)
2434 error = 0;
2435 return (error);
2436 }
2437
2438 /*
2439 * nfs remove directory call
2440 */
2441 APPLESTATIC int
2442 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2443 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2444 {
2445 struct nfsrv_descript nfsd, *nd = &nfsd;
2446 int error = 0;
2447
2448 *dattrflagp = 0;
2449 if (namelen > NFS_MAXNAMLEN)
2450 return (ENAMETOOLONG);
2451 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2452 (void) nfsm_strtom(nd, name, namelen);
2453 error = nfscl_request(nd, dvp, p, cred, dstuff);
2454 if (error)
2455 return (error);
2456 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2457 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2458 if (nd->nd_repstat && !error)
2459 error = nd->nd_repstat;
2460 mbuf_freem(nd->nd_mrep);
2461 /*
2462 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2463 */
2464 if (error == ENOENT)
2465 error = 0;
2466 return (error);
2467 }
2468
2469 /*
2470 * Readdir rpc.
2471 * Always returns with either uio_resid unchanged, if you are at the
2472 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2473 * filled in.
2474 * I felt this would allow caching of directory blocks more easily
2475 * than returning a pertially filled block.
2476 * Directory offset cookies:
2477 * Oh my, what to do with them...
2478 * I can think of three ways to deal with them:
2479 * 1 - have the layer above these RPCs maintain a map between logical
2480 * directory byte offsets and the NFS directory offset cookies
2481 * 2 - pass the opaque directory offset cookies up into userland
2482 * and let the libc functions deal with them, via the system call
2483 * 3 - return them to userland in the "struct dirent", so future versions
2484 * of libc can use them and do whatever is necessary to amke things work
2485 * above these rpc calls, in the meantime
2486 * For now, I do #3 by "hiding" the directory offset cookies after the
2487 * d_name field in struct dirent. This is space inside d_reclen that
2488 * will be ignored by anything that doesn't know about them.
2489 * The directory offset cookies are filled in as the last 8 bytes of
2490 * each directory entry, after d_name. Someday, the userland libc
2491 * functions may be able to use these. In the meantime, it satisfies
2492 * OpenBSD's requirements for cookies being returned.
2493 * If expects the directory offset cookie for the read to be in uio_offset
2494 * and returns the one for the next entry after this directory block in
2495 * there, as well.
2496 */
2497 APPLESTATIC int
2498 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2499 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2500 int *eofp, void *stuff)
2501 {
2502 int len, left;
2503 struct dirent *dp = NULL;
2504 u_int32_t *tl;
2505 nfsquad_t cookie, ncookie;
2506 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2507 struct nfsnode *dnp = VTONFS(vp);
2508 struct nfsvattr nfsva;
2509 struct nfsrv_descript nfsd, *nd = &nfsd;
2510 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2511 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2512 long dotfileid, dotdotfileid = 0;
2513 u_int32_t fakefileno = 0xffffffff, rderr;
2514 char *cp;
2515 nfsattrbit_t attrbits, dattrbits;
2516 u_int32_t *tl2 = NULL;
2517 size_t tresid;
2518
2519 KASSERT(uiop->uio_iovcnt == 1 &&
2520 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2521 ("nfs readdirrpc bad uio"));
2522
2523 /*
2524 * There is no point in reading a lot more than uio_resid, however
2525 * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2526 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2527 * will never make readsize > nm_readdirsize.
2528 */
2529 readsize = nmp->nm_readdirsize;
2530 if (readsize > uio_uio_resid(uiop))
2531 readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
2532
2533 *attrflagp = 0;
2534 if (eofp)
2535 *eofp = 0;
2536 tresid = uio_uio_resid(uiop);
2537 cookie.lval[0] = cookiep->nfsuquad[0];
2538 cookie.lval[1] = cookiep->nfsuquad[1];
2539 nd->nd_mrep = NULL;
2540
2541 /*
2542 * For NFSv4, first create the "." and ".." entries.
2543 */
2544 if (NFSHASNFSV4(nmp)) {
2545 reqsize = 6 * NFSX_UNSIGNED;
2546 NFSGETATTR_ATTRBIT(&dattrbits);
2547 NFSZERO_ATTRBIT(&attrbits);
2548 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2549 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2550 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2551 NFSATTRBIT_MOUNTEDONFILEID)) {
2552 NFSSETBIT_ATTRBIT(&attrbits,
2553 NFSATTRBIT_MOUNTEDONFILEID);
2554 gotmnton = 1;
2555 } else {
2556 /*
2557 * Must fake it. Use the fileno, except when the
2558 * fsid is != to that of the directory. For that
2559 * case, generate a fake fileno that is not the same.
2560 */
2561 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2562 gotmnton = 0;
2563 }
2564
2565 /*
2566 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2567 */
2568 if (uiop->uio_offset == 0) {
2569 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000
2570 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred);
2571 #else
2572 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p);
2573 #endif
2574 if (error)
2575 return (error);
2576 dotfileid = nfsva.na_fileid;
2577 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2578 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2579 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2580 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2581 (void) nfsrv_putattrbit(nd, &attrbits);
2582 error = nfscl_request(nd, vp, p, cred, stuff);
2583 if (error)
2584 return (error);
2585 if (nd->nd_repstat == 0) {
2586 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2587 len = fxdr_unsigned(int, *(tl + 2));
2588 if (len > 0 && len <= NFSX_V4FHMAX)
2589 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2590 else
2591 error = EPERM;
2592 if (!error) {
2593 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2594 nfsva.na_mntonfileno = 0xffffffff;
2595 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2596 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2597 NULL, NULL, NULL, p, cred);
2598 if (error) {
2599 dotdotfileid = dotfileid;
2600 } else if (gotmnton) {
2601 if (nfsva.na_mntonfileno != 0xffffffff)
2602 dotdotfileid = nfsva.na_mntonfileno;
2603 else
2604 dotdotfileid = nfsva.na_fileid;
2605 } else if (nfsva.na_filesid[0] ==
2606 dnp->n_vattr.na_filesid[0] &&
2607 nfsva.na_filesid[1] ==
2608 dnp->n_vattr.na_filesid[1]) {
2609 dotdotfileid = nfsva.na_fileid;
2610 } else {
2611 do {
2612 fakefileno--;
2613 } while (fakefileno ==
2614 nfsva.na_fileid);
2615 dotdotfileid = fakefileno;
2616 }
2617 }
2618 } else if (nd->nd_repstat == NFSERR_NOENT) {
2619 /*
2620 * Lookupp returns NFSERR_NOENT when we are
2621 * at the root, so just use the current dir.
2622 */
2623 nd->nd_repstat = 0;
2624 dotdotfileid = dotfileid;
2625 } else {
2626 error = nd->nd_repstat;
2627 }
2628 mbuf_freem(nd->nd_mrep);
2629 if (error)
2630 return (error);
2631 nd->nd_mrep = NULL;
2632 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2633 dp->d_type = DT_DIR;
2634 dp->d_fileno = dotfileid;
2635 dp->d_namlen = 1;
2636 dp->d_name[0] = '.';
2637 dp->d_name[1] = '\0';
2638 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2639 /*
2640 * Just make these offset cookie 0.
2641 */
2642 tl = (u_int32_t *)&dp->d_name[4];
2643 *tl++ = 0;
2644 *tl = 0;
2645 blksiz += dp->d_reclen;
2646 uio_uio_resid_add(uiop, -(dp->d_reclen));
2647 uiop->uio_offset += dp->d_reclen;
2648 uio_iov_base_add(uiop, dp->d_reclen);
2649 uio_iov_len_add(uiop, -(dp->d_reclen));
2650 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2651 dp->d_type = DT_DIR;
2652 dp->d_fileno = dotdotfileid;
2653 dp->d_namlen = 2;
2654 dp->d_name[0] = '.';
2655 dp->d_name[1] = '.';
2656 dp->d_name[2] = '\0';
2657 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2658 /*
2659 * Just make these offset cookie 0.
2660 */
2661 tl = (u_int32_t *)&dp->d_name[4];
2662 *tl++ = 0;
2663 *tl = 0;
2664 blksiz += dp->d_reclen;
2665 uio_uio_resid_add(uiop, -(dp->d_reclen));
2666 uiop->uio_offset += dp->d_reclen;
2667 uio_iov_base_add(uiop, dp->d_reclen);
2668 uio_iov_len_add(uiop, -(dp->d_reclen));
2669 }
2670 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
2671 } else {
2672 reqsize = 5 * NFSX_UNSIGNED;
2673 }
2674
2675
2676 /*
2677 * Loop around doing readdir rpc's of size readsize.
2678 * The stopping criteria is EOF or buffer full.
2679 */
2680 while (more_dirs && bigenough) {
2681 *attrflagp = 0;
2682 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
2683 if (nd->nd_flag & ND_NFSV2) {
2684 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2685 *tl++ = cookie.lval[1];
2686 *tl = txdr_unsigned(readsize);
2687 } else {
2688 NFSM_BUILD(tl, u_int32_t *, reqsize);
2689 *tl++ = cookie.lval[0];
2690 *tl++ = cookie.lval[1];
2691 if (cookie.qval == 0) {
2692 *tl++ = 0;
2693 *tl++ = 0;
2694 } else {
2695 NFSLOCKNODE(dnp);
2696 *tl++ = dnp->n_cookieverf.nfsuquad[0];
2697 *tl++ = dnp->n_cookieverf.nfsuquad[1];
2698 NFSUNLOCKNODE(dnp);
2699 }
2700 if (nd->nd_flag & ND_NFSV4) {
2701 *tl++ = txdr_unsigned(readsize);
2702 *tl = txdr_unsigned(readsize);
2703 (void) nfsrv_putattrbit(nd, &attrbits);
2704 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2705 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2706 (void) nfsrv_putattrbit(nd, &dattrbits);
2707 } else {
2708 *tl = txdr_unsigned(readsize);
2709 }
2710 }
2711 error = nfscl_request(nd, vp, p, cred, stuff);
2712 if (error)
2713 return (error);
2714 if (!(nd->nd_flag & ND_NFSV2)) {
2715 if (nd->nd_flag & ND_NFSV3)
2716 error = nfscl_postop_attr(nd, nap, attrflagp,
2717 stuff);
2718 if (!nd->nd_repstat && !error) {
2719 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2720 NFSLOCKNODE(dnp);
2721 dnp->n_cookieverf.nfsuquad[0] = *tl++;
2722 dnp->n_cookieverf.nfsuquad[1] = *tl;
2723 NFSUNLOCKNODE(dnp);
2724 }
2725 }
2726 if (nd->nd_repstat || error) {
2727 if (!error)
2728 error = nd->nd_repstat;
2729 goto nfsmout;
2730 }
2731 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2732 more_dirs = fxdr_unsigned(int, *tl);
2733 if (!more_dirs)
2734 tryformoredirs = 0;
2735
2736 /* loop thru the dir entries, doctoring them to 4bsd form */
2737 while (more_dirs && bigenough) {
2738 if (nd->nd_flag & ND_NFSV4) {
2739 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2740 ncookie.lval[0] = *tl++;
2741 ncookie.lval[1] = *tl++;
2742 len = fxdr_unsigned(int, *tl);
2743 } else if (nd->nd_flag & ND_NFSV3) {
2744 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2745 nfsva.na_fileid = fxdr_hyper(tl);
2746 tl += 2;
2747 len = fxdr_unsigned(int, *tl);
2748 } else {
2749 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2750 nfsva.na_fileid =
2751 fxdr_unsigned(long, *tl++);
2752 len = fxdr_unsigned(int, *tl);
2753 }
2754 if (len <= 0 || len > NFS_MAXNAMLEN) {
2755 error = EBADRPC;
2756 goto nfsmout;
2757 }
2758 tlen = NFSM_RNDUP(len);
2759 if (tlen == len)
2760 tlen += 4; /* To ensure null termination */
2761 left = DIRBLKSIZ - blksiz;
2762 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) {
2763 dp->d_reclen += left;
2764 uio_iov_base_add(uiop, left);
2765 uio_iov_len_add(uiop, -(left));
2766 uio_uio_resid_add(uiop, -(left));
2767 uiop->uio_offset += left;
2768 blksiz = 0;
2769 }
2770 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
2771 bigenough = 0;
2772 if (bigenough) {
2773 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2774 dp->d_namlen = len;
2775 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
2776 dp->d_type = DT_UNKNOWN;
2777 blksiz += dp->d_reclen;
2778 if (blksiz == DIRBLKSIZ)
2779 blksiz = 0;
2780 uio_uio_resid_add(uiop, -(DIRHDSIZ));
2781 uiop->uio_offset += DIRHDSIZ;
2782 uio_iov_base_add(uiop, DIRHDSIZ);
2783 uio_iov_len_add(uiop, -(DIRHDSIZ));
2784 error = nfsm_mbufuio(nd, uiop, len);
2785 if (error)
2786 goto nfsmout;
2787 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
2788 tlen -= len;
2789 *cp = '\0'; /* null terminate */
2790 cp += tlen; /* points to cookie storage */
2791 tl2 = (u_int32_t *)cp;
2792 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
2793 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
2794 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
2795 uiop->uio_offset += (tlen + NFSX_HYPER);
2796 } else {
2797 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2798 if (error)
2799 goto nfsmout;
2800 }
2801 if (nd->nd_flag & ND_NFSV4) {
2802 rderr = 0;
2803 nfsva.na_mntonfileno = 0xffffffff;
2804 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2805 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2806 NULL, NULL, &rderr, p, cred);
2807 if (error)
2808 goto nfsmout;
2809 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2810 } else if (nd->nd_flag & ND_NFSV3) {
2811 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2812 ncookie.lval[0] = *tl++;
2813 ncookie.lval[1] = *tl++;
2814 } else {
2815 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2816 ncookie.lval[0] = 0;
2817 ncookie.lval[1] = *tl++;
2818 }
2819 if (bigenough) {
2820 if (nd->nd_flag & ND_NFSV4) {
2821 if (rderr) {
2822 dp->d_fileno = 0;
2823 } else {
2824 if (gotmnton) {
2825 if (nfsva.na_mntonfileno != 0xffffffff)
2826 dp->d_fileno = nfsva.na_mntonfileno;
2827 else
2828 dp->d_fileno = nfsva.na_fileid;
2829 } else if (nfsva.na_filesid[0] ==
2830 dnp->n_vattr.na_filesid[0] &&
2831 nfsva.na_filesid[1] ==
2832 dnp->n_vattr.na_filesid[1]) {
2833 dp->d_fileno = nfsva.na_fileid;
2834 } else {
2835 do {
2836 fakefileno--;
2837 } while (fakefileno ==
2838 nfsva.na_fileid);
2839 dp->d_fileno = fakefileno;
2840 }
2841 dp->d_type = vtonfs_dtype(nfsva.na_type);
2842 }
2843 } else {
2844 dp->d_fileno = nfsva.na_fileid;
2845 }
2846 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
2847 ncookie.lval[0];
2848 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
2849 ncookie.lval[1];
2850 }
2851 more_dirs = fxdr_unsigned(int, *tl);
2852 }
2853 /*
2854 * If at end of rpc data, get the eof boolean
2855 */
2856 if (!more_dirs) {
2857 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2858 eof = fxdr_unsigned(int, *tl);
2859 if (tryformoredirs)
2860 more_dirs = !eof;
2861 if (nd->nd_flag & ND_NFSV4) {
2862 error = nfscl_postop_attr(nd, nap, attrflagp,
2863 stuff);
2864 if (error)
2865 goto nfsmout;
2866 }
2867 }
2868 mbuf_freem(nd->nd_mrep);
2869 nd->nd_mrep = NULL;
2870 }
2871 /*
2872 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
2873 * by increasing d_reclen for the last record.
2874 */
2875 if (blksiz > 0) {
2876 left = DIRBLKSIZ - blksiz;
2877 dp->d_reclen += left;
2878 uio_iov_base_add(uiop, left);
2879 uio_iov_len_add(uiop, -(left));
2880 uio_uio_resid_add(uiop, -(left));
2881 uiop->uio_offset += left;
2882 }
2883
2884 /*
2885 * If returning no data, assume end of file.
2886 * If not bigenough, return not end of file, since you aren't
2887 * returning all the data
2888 * Otherwise, return the eof flag from the server.
2889 */
2890 if (eofp) {
2891 if (tresid == ((size_t)(uio_uio_resid(uiop))))
2892 *eofp = 1;
2893 else if (!bigenough)
2894 *eofp = 0;
2895 else
2896 *eofp = eof;
2897 }
2898
2899 /*
2900 * Add extra empty records to any remaining DIRBLKSIZ chunks.
2901 */
2902 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) {
2903 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2904 dp->d_type = DT_UNKNOWN;
2905 dp->d_fileno = 0;
2906 dp->d_namlen = 0;
2907 dp->d_name[0] = '\0';
2908 tl = (u_int32_t *)&dp->d_name[4];
2909 *tl++ = cookie.lval[0];
2910 *tl = cookie.lval[1];
2911 dp->d_reclen = DIRBLKSIZ;
2912 uio_iov_base_add(uiop, DIRBLKSIZ);
2913 uio_iov_len_add(uiop, -(DIRBLKSIZ));
2914 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
2915 uiop->uio_offset += DIRBLKSIZ;
2916 }
2917
2918 nfsmout:
2919 if (nd->nd_mrep != NULL)
2920 mbuf_freem(nd->nd_mrep);
2921 return (error);
2922 }
2923
2924 #ifndef APPLE
2925 /*
2926 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
2927 * (Also used for NFS V4 when mount flag set.)
2928 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
2929 */
2930 APPLESTATIC int
2931 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2932 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2933 int *eofp, void *stuff)
2934 {
2935 int len, left;
2936 struct dirent *dp = NULL;
2937 u_int32_t *tl;
2938 vnode_t newvp = NULLVP;
2939 struct nfsrv_descript nfsd, *nd = &nfsd;
2940 struct nameidata nami, *ndp = &nami;
2941 struct componentname *cnp = &ndp->ni_cnd;
2942 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2943 struct nfsnode *dnp = VTONFS(vp), *np;
2944 struct nfsvattr nfsva;
2945 struct nfsfh *nfhp;
2946 nfsquad_t cookie, ncookie;
2947 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2948 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
2949 int isdotdot = 0, unlocknewvp = 0;
2950 long dotfileid, dotdotfileid = 0, fileno = 0;
2951 char *cp;
2952 nfsattrbit_t attrbits, dattrbits;
2953 size_t tresid;
2954 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
2955 struct timespec dctime;
2956
2957 KASSERT(uiop->uio_iovcnt == 1 &&
2958 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2959 ("nfs readdirplusrpc bad uio"));
2960 timespecclear(&dctime);
2961 *attrflagp = 0;
2962 if (eofp != NULL)
2963 *eofp = 0;
2964 ndp->ni_dvp = vp;
2965 nd->nd_mrep = NULL;
2966 cookie.lval[0] = cookiep->nfsuquad[0];
2967 cookie.lval[1] = cookiep->nfsuquad[1];
2968 tresid = uio_uio_resid(uiop);
2969
2970 /*
2971 * For NFSv4, first create the "." and ".." entries.
2972 */
2973 if (NFSHASNFSV4(nmp)) {
2974 NFSGETATTR_ATTRBIT(&dattrbits);
2975 NFSZERO_ATTRBIT(&attrbits);
2976 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2977 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2978 NFSATTRBIT_MOUNTEDONFILEID)) {
2979 NFSSETBIT_ATTRBIT(&attrbits,
2980 NFSATTRBIT_MOUNTEDONFILEID);
2981 gotmnton = 1;
2982 } else {
2983 /*
2984 * Must fake it. Use the fileno, except when the
2985 * fsid is != to that of the directory. For that
2986 * case, generate a fake fileno that is not the same.
2987 */
2988 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2989 gotmnton = 0;
2990 }
2991
2992 /*
2993 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2994 */
2995 if (uiop->uio_offset == 0) {
2996 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000
2997 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred);
2998 #else
2999 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p);
3000 #endif
3001 if (error)
3002 return (error);
3003 dctime = nfsva.na_ctime;
3004 dotfileid = nfsva.na_fileid;
3005 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
3006 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3007 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
3008 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3009 (void) nfsrv_putattrbit(nd, &attrbits);
3010 error = nfscl_request(nd, vp, p, cred, stuff);
3011 if (error)
3012 return (error);
3013 if (nd->nd_repstat == 0) {
3014 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3015 len = fxdr_unsigned(int, *(tl + 2));
3016 if (len > 0 && len <= NFSX_V4FHMAX)
3017 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3018 else
3019 error = EPERM;
3020 if (!error) {
3021 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3022 nfsva.na_mntonfileno = 0xffffffff;
3023 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3024 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3025 NULL, NULL, NULL, p, cred);
3026 if (error) {
3027 dotdotfileid = dotfileid;
3028 } else if (gotmnton) {
3029 if (nfsva.na_mntonfileno != 0xffffffff)
3030 dotdotfileid = nfsva.na_mntonfileno;
3031 else
3032 dotdotfileid = nfsva.na_fileid;
3033 } else if (nfsva.na_filesid[0] ==
3034 dnp->n_vattr.na_filesid[0] &&
3035 nfsva.na_filesid[1] ==
3036 dnp->n_vattr.na_filesid[1]) {
3037 dotdotfileid = nfsva.na_fileid;
3038 } else {
3039 do {
3040 fakefileno--;
3041 } while (fakefileno ==
3042 nfsva.na_fileid);
3043 dotdotfileid = fakefileno;
3044 }
3045 }
3046 } else if (nd->nd_repstat == NFSERR_NOENT) {
3047 /*
3048 * Lookupp returns NFSERR_NOENT when we are
3049 * at the root, so just use the current dir.
3050 */
3051 nd->nd_repstat = 0;
3052 dotdotfileid = dotfileid;
3053 } else {
3054 error = nd->nd_repstat;
3055 }
3056 mbuf_freem(nd->nd_mrep);
3057 if (error)
3058 return (error);
3059 nd->nd_mrep = NULL;
3060 dp = (struct dirent *)uio_iov_base(uiop);
3061 dp->d_type = DT_DIR;
3062 dp->d_fileno = dotfileid;
3063 dp->d_namlen = 1;
3064 dp->d_name[0] = '.';
3065 dp->d_name[1] = '\0';
3066 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3067 /*
3068 * Just make these offset cookie 0.
3069 */
3070 tl = (u_int32_t *)&dp->d_name[4];
3071 *tl++ = 0;
3072 *tl = 0;
3073 blksiz += dp->d_reclen;
3074 uio_uio_resid_add(uiop, -(dp->d_reclen));
3075 uiop->uio_offset += dp->d_reclen;
3076 uio_iov_base_add(uiop, dp->d_reclen);
3077 uio_iov_len_add(uiop, -(dp->d_reclen));
3078 dp = (struct dirent *)uio_iov_base(uiop);
3079 dp->d_type = DT_DIR;
3080 dp->d_fileno = dotdotfileid;
3081 dp->d_namlen = 2;
3082 dp->d_name[0] = '.';
3083 dp->d_name[1] = '.';
3084 dp->d_name[2] = '\0';
3085 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3086 /*
3087 * Just make these offset cookie 0.
3088 */
3089 tl = (u_int32_t *)&dp->d_name[4];
3090 *tl++ = 0;
3091 *tl = 0;
3092 blksiz += dp->d_reclen;
3093 uio_uio_resid_add(uiop, -(dp->d_reclen));
3094 uiop->uio_offset += dp->d_reclen;
3095 uio_iov_base_add(uiop, dp->d_reclen);
3096 uio_iov_len_add(uiop, -(dp->d_reclen));
3097 }
3098 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3099 if (gotmnton)
3100 NFSSETBIT_ATTRBIT(&attrbits,
3101 NFSATTRBIT_MOUNTEDONFILEID);
3102 }
3103
3104 /*
3105 * Loop around doing readdir rpc's of size nm_readdirsize.
3106 * The stopping criteria is EOF or buffer full.
3107 */
3108 while (more_dirs && bigenough) {
3109 *attrflagp = 0;
3110 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3111 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3112 *tl++ = cookie.lval[0];
3113 *tl++ = cookie.lval[1];
3114 if (cookie.qval == 0) {
3115 *tl++ = 0;
3116 *tl++ = 0;
3117 } else {
3118 NFSLOCKNODE(dnp);
3119 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3120 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3121 NFSUNLOCKNODE(dnp);
3122 }
3123 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3124 *tl = txdr_unsigned(nmp->nm_readdirsize);
3125 if (nd->nd_flag & ND_NFSV4) {
3126 (void) nfsrv_putattrbit(nd, &attrbits);
3127 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3128 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3129 (void) nfsrv_putattrbit(nd, &dattrbits);
3130 }
3131 error = nfscl_request(nd, vp, p, cred, stuff);
3132 if (error)
3133 return (error);
3134 if (nd->nd_flag & ND_NFSV3)
3135 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3136 if (nd->nd_repstat || error) {
3137 if (!error)
3138 error = nd->nd_repstat;
3139 goto nfsmout;
3140 }
3141 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
3142 dctime = nap->na_ctime;
3143 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3144 NFSLOCKNODE(dnp);
3145 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3146 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3147 NFSUNLOCKNODE(dnp);
3148 more_dirs = fxdr_unsigned(int, *tl);
3149 if (!more_dirs)
3150 tryformoredirs = 0;
3151
3152 /* loop thru the dir entries, doctoring them to 4bsd form */
3153 while (more_dirs && bigenough) {
3154 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3155 if (nd->nd_flag & ND_NFSV4) {
3156 ncookie.lval[0] = *tl++;
3157 ncookie.lval[1] = *tl++;
3158 } else {
3159 fileno = fxdr_unsigned(long, *++tl);
3160 tl++;
3161 }
3162 len = fxdr_unsigned(int, *tl);
3163 if (len <= 0 || len > NFS_MAXNAMLEN) {
3164 error = EBADRPC;
3165 goto nfsmout;
3166 }
3167 tlen = NFSM_RNDUP(len);
3168 if (tlen == len)
3169 tlen += 4; /* To ensure null termination */
3170 left = DIRBLKSIZ - blksiz;
3171 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) {
3172 dp->d_reclen += left;
3173 uio_iov_base_add(uiop, left);
3174 uio_iov_len_add(uiop, -(left));
3175 uio_uio_resid_add(uiop, -(left));
3176 uiop->uio_offset += left;
3177 blksiz = 0;
3178 }
3179 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
3180 bigenough = 0;
3181 if (bigenough) {
3182 dp = (struct dirent *)uio_iov_base(uiop);
3183 dp->d_namlen = len;
3184 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
3185 dp->d_type = DT_UNKNOWN;
3186 blksiz += dp->d_reclen;
3187 if (blksiz == DIRBLKSIZ)
3188 blksiz = 0;
3189 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3190 uiop->uio_offset += DIRHDSIZ;
3191 uio_iov_base_add(uiop, DIRHDSIZ);
3192 uio_iov_len_add(uiop, -(DIRHDSIZ));
3193 cnp->cn_nameptr = uio_iov_base(uiop);
3194 cnp->cn_namelen = len;
3195 NFSCNHASHZERO(cnp);
3196 error = nfsm_mbufuio(nd, uiop, len);
3197 if (error)
3198 goto nfsmout;
3199 cp = uio_iov_base(uiop);
3200 tlen -= len;
3201 *cp = '\0';
3202 cp += tlen; /* points to cookie storage */
3203 tl2 = (u_int32_t *)cp;
3204 if (len == 2 && cnp->cn_nameptr[0] == '.' &&
3205 cnp->cn_nameptr[1] == '.')
3206 isdotdot = 1;
3207 else
3208 isdotdot = 0;
3209 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3210 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3211 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3212 uiop->uio_offset += (tlen + NFSX_HYPER);
3213 } else {
3214 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3215 if (error)
3216 goto nfsmout;
3217 }
3218 nfhp = NULL;
3219 if (nd->nd_flag & ND_NFSV3) {
3220 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3221 ncookie.lval[0] = *tl++;
3222 ncookie.lval[1] = *tl++;
3223 attrflag = fxdr_unsigned(int, *tl);
3224 if (attrflag) {
3225 error = nfsm_loadattr(nd, &nfsva);
3226 if (error)
3227 goto nfsmout;
3228 }
3229 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3230 if (*tl) {
3231 error = nfsm_getfh(nd, &nfhp);
3232 if (error)
3233 goto nfsmout;
3234 }
3235 if (!attrflag && nfhp != NULL) {
3236 FREE((caddr_t)nfhp, M_NFSFH);
3237 nfhp = NULL;
3238 }
3239 } else {
3240 rderr = 0;
3241 nfsva.na_mntonfileno = 0xffffffff;
3242 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3243 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3244 NULL, NULL, &rderr, p, cred);
3245 if (error)
3246 goto nfsmout;
3247 }
3248
3249 if (bigenough) {
3250 if (nd->nd_flag & ND_NFSV4) {
3251 if (rderr) {
3252 dp->d_fileno = 0;
3253 } else if (gotmnton) {
3254 if (nfsva.na_mntonfileno != 0xffffffff)
3255 dp->d_fileno = nfsva.na_mntonfileno;
3256 else
3257 dp->d_fileno = nfsva.na_fileid;
3258 } else if (nfsva.na_filesid[0] ==
3259 dnp->n_vattr.na_filesid[0] &&
3260 nfsva.na_filesid[1] ==
3261 dnp->n_vattr.na_filesid[1]) {
3262 dp->d_fileno = nfsva.na_fileid;
3263 } else {
3264 do {
3265 fakefileno--;
3266 } while (fakefileno ==
3267 nfsva.na_fileid);
3268 dp->d_fileno = fakefileno;
3269 }
3270 } else {
3271 dp->d_fileno = fileno;
3272 }
3273 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3274 ncookie.lval[0];
3275 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3276 ncookie.lval[1];
3277
3278 if (nfhp != NULL) {
3279 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3280 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3281 VREF(vp);
3282 newvp = vp;
3283 unlocknewvp = 0;
3284 FREE((caddr_t)nfhp, M_NFSFH);
3285 np = dnp;
3286 } else if (isdotdot != 0) {
3287 /*
3288 * Skip doing a nfscl_nget() call for "..".
3289 * There's a race between acquiring the nfs
3290 * node here and lookups that look for the
3291 * directory being read (in the parent).
3292 * It would try to get a lock on ".." here,
3293 * owning the lock on the directory being
3294 * read. Lookup will hold the lock on ".."
3295 * and try to acquire the lock on the
3296 * directory being read.
3297 * If the directory is unlocked/relocked,
3298 * then there is a LOR with the buflock
3299 * vp is relocked.
3300 */
3301 free(nfhp, M_NFSFH);
3302 } else {
3303 error = nfscl_nget(vnode_mount(vp), vp,
3304 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
3305 if (!error) {
3306 newvp = NFSTOV(np);
3307 unlocknewvp = 1;
3308 }
3309 }
3310 nfhp = NULL;
3311 if (newvp != NULLVP) {
3312 error = nfscl_loadattrcache(&newvp,
3313 &nfsva, NULL, NULL, 0, 0);
3314 if (error) {
3315 if (unlocknewvp)
3316 vput(newvp);
3317 else
3318 vrele(newvp);
3319 goto nfsmout;
3320 }
3321 dp->d_type =
3322 vtonfs_dtype(np->n_vattr.na_type);
3323 ndp->ni_vp = newvp;
3324 NFSCNHASH(cnp, HASHINIT);
3325 if (cnp->cn_namelen <= NCHNAMLEN &&
3326 (newvp->v_type != VDIR ||
3327 dctime.tv_sec != 0)) {
3328 cache_enter_time(ndp->ni_dvp,
3329 ndp->ni_vp, cnp,
3330 &nfsva.na_ctime,
3331 newvp->v_type != VDIR ? NULL :
3332 &dctime);
3333 }
3334 if (unlocknewvp)
3335 vput(newvp);
3336 else
3337 vrele(newvp);
3338 newvp = NULLVP;
3339 }
3340 }
3341 } else if (nfhp != NULL) {
3342 FREE((caddr_t)nfhp, M_NFSFH);
3343 }
3344 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3345 more_dirs = fxdr_unsigned(int, *tl);
3346 }
3347 /*
3348 * If at end of rpc data, get the eof boolean
3349 */
3350 if (!more_dirs) {
3351 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3352 eof = fxdr_unsigned(int, *tl);
3353 if (tryformoredirs)
3354 more_dirs = !eof;
3355 if (nd->nd_flag & ND_NFSV4) {
3356 error = nfscl_postop_attr(nd, nap, attrflagp,
3357 stuff);
3358 if (error)
3359 goto nfsmout;
3360 }
3361 }
3362 mbuf_freem(nd->nd_mrep);
3363 nd->nd_mrep = NULL;
3364 }
3365 /*
3366 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3367 * by increasing d_reclen for the last record.
3368 */
3369 if (blksiz > 0) {
3370 left = DIRBLKSIZ - blksiz;
3371 dp->d_reclen += left;
3372 uio_iov_base_add(uiop, left);
3373 uio_iov_len_add(uiop, -(left));
3374 uio_uio_resid_add(uiop, -(left));
3375 uiop->uio_offset += left;
3376 }
3377
3378 /*
3379 * If returning no data, assume end of file.
3380 * If not bigenough, return not end of file, since you aren't
3381 * returning all the data
3382 * Otherwise, return the eof flag from the server.
3383 */
3384 if (eofp != NULL) {
3385 if (tresid == uio_uio_resid(uiop))
3386 *eofp = 1;
3387 else if (!bigenough)
3388 *eofp = 0;
3389 else
3390 *eofp = eof;
3391 }
3392
3393 /*
3394 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3395 */
3396 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
3397 dp = (struct dirent *)uio_iov_base(uiop);
3398 dp->d_type = DT_UNKNOWN;
3399 dp->d_fileno = 0;
3400 dp->d_namlen = 0;
3401 dp->d_name[0] = '\0';
3402 tl = (u_int32_t *)&dp->d_name[4];
3403 *tl++ = cookie.lval[0];
3404 *tl = cookie.lval[1];
3405 dp->d_reclen = DIRBLKSIZ;
3406 uio_iov_base_add(uiop, DIRBLKSIZ);
3407 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3408 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3409 uiop->uio_offset += DIRBLKSIZ;
3410 }
3411
3412 nfsmout:
3413 if (nd->nd_mrep != NULL)
3414 mbuf_freem(nd->nd_mrep);
3415 return (error);
3416 }
3417 #endif /* !APPLE */
3418
3419 /*
3420 * Nfs commit rpc
3421 */
3422 APPLESTATIC int
3423 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3424 NFSPROC_T *p, u_char *verfp, struct nfsvattr *nap, int *attrflagp,
3425 void *stuff)
3426 {
3427 u_int32_t *tl;
3428 struct nfsrv_descript nfsd, *nd = &nfsd;
3429 nfsattrbit_t attrbits;
3430 int error;
3431
3432 *attrflagp = 0;
3433 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3434 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3435 txdr_hyper(offset, tl);
3436 tl += 2;
3437 *tl = txdr_unsigned(cnt);
3438 if (nd->nd_flag & ND_NFSV4) {
3439 /*
3440 * And do a Getattr op.
3441 */
3442 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3443 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3444 NFSGETATTR_ATTRBIT(&attrbits);
3445 (void) nfsrv_putattrbit(nd, &attrbits);
3446 }
3447 error = nfscl_request(nd, vp, p, cred, stuff);
3448 if (error)
3449 return (error);
3450 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3451 if (!error && !nd->nd_repstat) {
3452 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3453 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF);
3454 if (nd->nd_flag & ND_NFSV4)
3455 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3456 }
3457 nfsmout:
3458 if (!error && nd->nd_repstat)
3459 error = nd->nd_repstat;
3460 mbuf_freem(nd->nd_mrep);
3461 return (error);
3462 }
3463
3464 /*
3465 * NFS byte range lock rpc.
3466 * (Mostly just calls one of the three lower level RPC routines.)
3467 */
3468 APPLESTATIC int
3469 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3470 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3471 {
3472 struct nfscllockowner *lp;
3473 struct nfsclclient *clp;
3474 struct nfsfh *nfhp;
3475 struct nfsrv_descript nfsd, *nd = &nfsd;
3476 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3477 u_int64_t off, len;
3478 off_t start, end;
3479 u_int32_t clidrev = 0;
3480 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3481 int callcnt, dorpc;
3482
3483 /*
3484 * Convert the flock structure into a start and end and do POSIX
3485 * bounds checking.
3486 */
3487 switch (fl->l_whence) {
3488 case SEEK_SET:
3489 case SEEK_CUR:
3490 /*
3491 * Caller is responsible for adding any necessary offset
3492 * when SEEK_CUR is used.
3493 */
3494 start = fl->l_start;
3495 off = fl->l_start;
3496 break;
3497 case SEEK_END:
3498 start = size + fl->l_start;
3499 off = size + fl->l_start;
3500 break;
3501 default:
3502 return (EINVAL);
3503 };
3504 if (start < 0)
3505 return (EINVAL);
3506 if (fl->l_len != 0) {
3507 end = start + fl->l_len - 1;
3508 if (end < start)
3509 return (EINVAL);
3510 }
3511
3512 len = fl->l_len;
3513 if (len == 0)
3514 len = NFS64BITSSET;
3515 retrycnt = 0;
3516 do {
3517 nd->nd_repstat = 0;
3518 if (op == F_GETLK) {
3519 error = nfscl_getcl(vp, cred, p, &clp);
3520 if (error)
3521 return (error);
3522 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
3523 if (!error) {
3524 clidrev = clp->nfsc_clientidrev;
3525 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3526 p, id, flags);
3527 } else if (error == -1) {
3528 error = 0;
3529 }
3530 nfscl_clientrelease(clp);
3531 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3532 /*
3533 * We must loop around for all lockowner cases.
3534 */
3535 callcnt = 0;
3536 error = nfscl_getcl(vp, cred, p, &clp);
3537 if (error)
3538 return (error);
3539 do {
3540 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3541 clp, id, flags, &lp, &dorpc);
3542 /*
3543 * If it returns a NULL lp, we're done.
3544 */
3545 if (lp == NULL) {
3546 if (callcnt == 0)
3547 nfscl_clientrelease(clp);
3548 else
3549 nfscl_releasealllocks(clp, vp, p, id, flags);
3550 return (error);
3551 }
3552 if (nmp->nm_clp != NULL)
3553 clidrev = nmp->nm_clp->nfsc_clientidrev;
3554 else
3555 clidrev = 0;
3556 /*
3557 * If the server doesn't support Posix lock semantics,
3558 * only allow locks on the entire file, since it won't
3559 * handle overlapping byte ranges.
3560 * There might still be a problem when a lock
3561 * upgrade/downgrade (read<->write) occurs, since the
3562 * server "might" expect an unlock first?
3563 */
3564 if (dorpc && (lp->nfsl_open->nfso_posixlock ||
3565 (off == 0 && len == NFS64BITSSET))) {
3566 /*
3567 * Since the lock records will go away, we must
3568 * wait for grace and delay here.
3569 */
3570 do {
3571 error = nfsrpc_locku(nd, nmp, lp, off, len,
3572 NFSV4LOCKT_READ, cred, p, 0);
3573 if ((nd->nd_repstat == NFSERR_GRACE ||
3574 nd->nd_repstat == NFSERR_DELAY) &&
3575 error == 0)
3576 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
3577 "nfs_advlock");
3578 } while ((nd->nd_repstat == NFSERR_GRACE ||
3579 nd->nd_repstat == NFSERR_DELAY) && error == 0);
3580 }
3581 callcnt++;
3582 } while (error == 0 && nd->nd_repstat == 0);
3583 nfscl_releasealllocks(clp, vp, p, id, flags);
3584 } else if (op == F_SETLK) {
3585 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
3586 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
3587 if (error || donelocally) {
3588 return (error);
3589 }
3590 if (nmp->nm_clp != NULL)
3591 clidrev = nmp->nm_clp->nfsc_clientidrev;
3592 else
3593 clidrev = 0;
3594 nfhp = VTONFS(vp)->n_fhp;
3595 if (!lp->nfsl_open->nfso_posixlock &&
3596 (off != 0 || len != NFS64BITSSET)) {
3597 error = EINVAL;
3598 } else {
3599 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
3600 nfhp->nfh_len, lp, newone, reclaim, off,
3601 len, fl->l_type, cred, p, 0);
3602 }
3603 if (!error)
3604 error = nd->nd_repstat;
3605 nfscl_lockrelease(lp, error, newone);
3606 } else {
3607 error = EINVAL;
3608 }
3609 if (!error)
3610 error = nd->nd_repstat;
3611 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
3612 error == NFSERR_STALEDONTRECOVER ||
3613 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY) {
3614 (void) nfs_catnap(PZERO, error, "nfs_advlock");
3615 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
3616 && clidrev != 0) {
3617 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
3618 retrycnt++;
3619 }
3620 } while (error == NFSERR_GRACE ||
3621 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3622 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
3623 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
3624 expireret == 0 && clidrev != 0 && retrycnt < 4));
3625 if (error && retrycnt >= 4)
3626 error = EIO;
3627 return (error);
3628 }
3629
3630 /*
3631 * The lower level routine for the LockT case.
3632 */
3633 APPLESTATIC int
3634 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
3635 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
3636 struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3637 {
3638 u_int32_t *tl;
3639 int error, type, size;
3640 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3641 struct nfsnode *np;
3642
3643 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
3644 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3645 if (fl->l_type == F_RDLCK)
3646 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3647 else
3648 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3649 txdr_hyper(off, tl);
3650 tl += 2;
3651 txdr_hyper(len, tl);
3652 tl += 2;
3653 *tl++ = clp->nfsc_clientid.lval[0];
3654 *tl = clp->nfsc_clientid.lval[1];
3655 nfscl_filllockowner(id, own, flags);
3656 np = VTONFS(vp);
3657 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
3658 np->n_fhp->nfh_len);
3659 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
3660 error = nfscl_request(nd, vp, p, cred, NULL);
3661 if (error)
3662 return (error);
3663 if (nd->nd_repstat == 0) {
3664 fl->l_type = F_UNLCK;
3665 } else if (nd->nd_repstat == NFSERR_DENIED) {
3666 nd->nd_repstat = 0;
3667 fl->l_whence = SEEK_SET;
3668 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3669 fl->l_start = fxdr_hyper(tl);
3670 tl += 2;
3671 len = fxdr_hyper(tl);
3672 tl += 2;
3673 if (len == NFS64BITSSET)
3674 fl->l_len = 0;
3675 else
3676 fl->l_len = len;
3677 type = fxdr_unsigned(int, *tl++);
3678 if (type == NFSV4LOCKT_WRITE)
3679 fl->l_type = F_WRLCK;
3680 else
3681 fl->l_type = F_RDLCK;
3682 /*
3683 * XXX For now, I have no idea what to do with the
3684 * conflicting lock_owner, so I'll just set the pid == 0
3685 * and skip over the lock_owner.
3686 */
3687 fl->l_pid = (pid_t)0;
3688 tl += 2;
3689 size = fxdr_unsigned(int, *tl);
3690 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3691 error = EBADRPC;
3692 if (!error)
3693 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3694 } else if (nd->nd_repstat == NFSERR_STALECLIENTID)
3695 nfscl_initiate_recovery(clp);
3696 nfsmout:
3697 mbuf_freem(nd->nd_mrep);
3698 return (error);
3699 }
3700
3701 /*
3702 * Lower level function that performs the LockU RPC.
3703 */
3704 static int
3705 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
3706 struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
3707 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
3708 {
3709 u_int32_t *tl;
3710 int error;
3711
3712 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
3713 lp->nfsl_open->nfso_fhlen, NULL);
3714 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
3715 *tl++ = txdr_unsigned(type);
3716 *tl = txdr_unsigned(lp->nfsl_seqid);
3717 if (nfstest_outofseq &&
3718 (arc4random() % nfstest_outofseq) == 0)
3719 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3720 tl++;
3721 *tl++ = lp->nfsl_stateid.seqid;
3722 *tl++ = lp->nfsl_stateid.other[0];
3723 *tl++ = lp->nfsl_stateid.other[1];
3724 *tl++ = lp->nfsl_stateid.other[2];
3725 txdr_hyper(off, tl);
3726 tl += 2;
3727 txdr_hyper(len, tl);
3728 if (syscred)
3729 nd->nd_flag |= ND_USEGSSNAME;
3730 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
3731 NFS_PROG, NFS_VER4, NULL, 1, NULL);
3732 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3733 if (error)
3734 return (error);
3735 if (nd->nd_repstat == 0) {
3736 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3737 lp->nfsl_stateid.seqid = *tl++;
3738 lp->nfsl_stateid.other[0] = *tl++;
3739 lp->nfsl_stateid.other[1] = *tl++;
3740 lp->nfsl_stateid.other[2] = *tl;
3741 } else if (nd->nd_repstat == NFSERR_STALESTATEID)
3742 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3743 nfsmout:
3744 mbuf_freem(nd->nd_mrep);
3745 return (error);
3746 }
3747
3748 /*
3749 * The actual Lock RPC.
3750 */
3751 APPLESTATIC int
3752 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
3753 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
3754 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
3755 NFSPROC_T *p, int syscred)
3756 {
3757 u_int32_t *tl;
3758 int error, size;
3759 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3760
3761 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL);
3762 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3763 if (type == F_RDLCK)
3764 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3765 else
3766 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3767 *tl++ = txdr_unsigned(reclaim);
3768 txdr_hyper(off, tl);
3769 tl += 2;
3770 txdr_hyper(len, tl);
3771 tl += 2;
3772 if (newone) {
3773 *tl = newnfs_true;
3774 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
3775 2 * NFSX_UNSIGNED + NFSX_HYPER);
3776 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
3777 *tl++ = lp->nfsl_open->nfso_stateid.seqid;
3778 *tl++ = lp->nfsl_open->nfso_stateid.other[0];
3779 *tl++ = lp->nfsl_open->nfso_stateid.other[1];
3780 *tl++ = lp->nfsl_open->nfso_stateid.other[2];
3781 *tl++ = txdr_unsigned(lp->nfsl_seqid);
3782 *tl++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0];
3783 *tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1];
3784 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
3785 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
3786 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
3787 } else {
3788 *tl = newnfs_false;
3789 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
3790 *tl++ = lp->nfsl_stateid.seqid;
3791 *tl++ = lp->nfsl_stateid.other[0];
3792 *tl++ = lp->nfsl_stateid.other[1];
3793 *tl++ = lp->nfsl_stateid.other[2];
3794 *tl = txdr_unsigned(lp->nfsl_seqid);
3795 if (nfstest_outofseq &&
3796 (arc4random() % nfstest_outofseq) == 0)
3797 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3798 }
3799 if (syscred)
3800 nd->nd_flag |= ND_USEGSSNAME;
3801 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
3802 NFS_PROG, NFS_VER4, NULL, 1, NULL);
3803 if (error)
3804 return (error);
3805 if (newone)
3806 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
3807 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3808 if (nd->nd_repstat == 0) {
3809 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3810 lp->nfsl_stateid.seqid = *tl++;
3811 lp->nfsl_stateid.other[0] = *tl++;
3812 lp->nfsl_stateid.other[1] = *tl++;
3813 lp->nfsl_stateid.other[2] = *tl;
3814 } else if (nd->nd_repstat == NFSERR_DENIED) {
3815 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3816 size = fxdr_unsigned(int, *(tl + 7));
3817 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3818 error = EBADRPC;
3819 if (!error)
3820 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3821 } else if (nd->nd_repstat == NFSERR_STALESTATEID)
3822 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3823 nfsmout:
3824 mbuf_freem(nd->nd_mrep);
3825 return (error);
3826 }
3827
3828 /*
3829 * nfs statfs rpc
3830 * (always called with the vp for the mount point)
3831 */
3832 APPLESTATIC int
3833 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
3834 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3835 void *stuff)
3836 {
3837 u_int32_t *tl = NULL;
3838 struct nfsrv_descript nfsd, *nd = &nfsd;
3839 struct nfsmount *nmp;
3840 nfsattrbit_t attrbits;
3841 int error;
3842
3843 *attrflagp = 0;
3844 nmp = VFSTONFS(vnode_mount(vp));
3845 if (NFSHASNFSV4(nmp)) {
3846 /*
3847 * For V4, you actually do a getattr.
3848 */
3849 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
3850 NFSSTATFS_GETATTRBIT(&attrbits);
3851 (void) nfsrv_putattrbit(nd, &attrbits);
3852 nd->nd_flag |= ND_USEGSSNAME;
3853 error = nfscl_request(nd, vp, p, cred, stuff);
3854 if (error)
3855 return (error);
3856 if (nd->nd_repstat == 0) {
3857 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
3858 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
3859 cred);
3860 if (!error) {
3861 nmp->nm_fsid[0] = nap->na_filesid[0];
3862 nmp->nm_fsid[1] = nap->na_filesid[1];
3863 NFSSETHASSETFSID(nmp);
3864 *attrflagp = 1;
3865 }
3866 } else {
3867 error = nd->nd_repstat;
3868 }
3869 if (error)
3870 goto nfsmout;
3871 } else {
3872 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
3873 error = nfscl_request(nd, vp, p, cred, stuff);
3874 if (error)
3875 return (error);
3876 if (nd->nd_flag & ND_NFSV3) {
3877 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3878 if (error)
3879 goto nfsmout;
3880 }
3881 if (nd->nd_repstat) {
3882 error = nd->nd_repstat;
3883 goto nfsmout;
3884 }
3885 NFSM_DISSECT(tl, u_int32_t *,
3886 NFSX_STATFS(nd->nd_flag & ND_NFSV3));
3887 }
3888 if (NFSHASNFSV3(nmp)) {
3889 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
3890 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
3891 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
3892 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
3893 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
3894 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
3895 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
3896 } else if (NFSHASNFSV4(nmp) == 0) {
3897 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
3898 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
3899 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
3900 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
3901 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
3902 }
3903 nfsmout:
3904 mbuf_freem(nd->nd_mrep);
3905 return (error);
3906 }
3907
3908 /*
3909 * nfs pathconf rpc
3910 */
3911 APPLESTATIC int
3912 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
3913 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3914 void *stuff)
3915 {
3916 struct nfsrv_descript nfsd, *nd = &nfsd;
3917 struct nfsmount *nmp;
3918 u_int32_t *tl;
3919 nfsattrbit_t attrbits;
3920 int error;
3921
3922 *attrflagp = 0;
3923 nmp = VFSTONFS(vnode_mount(vp));
3924 if (NFSHASNFSV4(nmp)) {
3925 /*
3926 * For V4, you actually do a getattr.
3927 */
3928 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
3929 NFSPATHCONF_GETATTRBIT(&attrbits);
3930 (void) nfsrv_putattrbit(nd, &attrbits);
3931 nd->nd_flag |= ND_USEGSSNAME;
3932 error = nfscl_request(nd, vp, p, cred, stuff);
3933 if (error)
3934 return (error);
3935 if (nd->nd_repstat == 0) {
3936 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
3937 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
3938 cred);
3939 if (!error)
3940 *attrflagp = 1;
3941 } else {
3942 error = nd->nd_repstat;
3943 }
3944 } else {
3945 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
3946 error = nfscl_request(nd, vp, p, cred, stuff);
3947 if (error)
3948 return (error);
3949 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3950 if (nd->nd_repstat && !error)
3951 error = nd->nd_repstat;
3952 if (!error) {
3953 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
3954 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
3955 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
3956 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
3957 pc->pc_chownrestricted =
3958 fxdr_unsigned(u_int32_t, *tl++);
3959 pc->pc_caseinsensitive =
3960 fxdr_unsigned(u_int32_t, *tl++);
3961 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
3962 }
3963 }
3964 nfsmout:
3965 mbuf_freem(nd->nd_mrep);
3966 return (error);
3967 }
3968
3969 /*
3970 * nfs version 3 fsinfo rpc call
3971 */
3972 APPLESTATIC int
3973 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
3974 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3975 {
3976 u_int32_t *tl;
3977 struct nfsrv_descript nfsd, *nd = &nfsd;
3978 int error;
3979
3980 *attrflagp = 0;
3981 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
3982 error = nfscl_request(nd, vp, p, cred, stuff);
3983 if (error)
3984 return (error);
3985 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3986 if (nd->nd_repstat && !error)
3987 error = nd->nd_repstat;
3988 if (!error) {
3989 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
3990 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
3991 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
3992 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
3993 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
3994 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
3995 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
3996 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
3997 fsp->fs_maxfilesize = fxdr_hyper(tl);
3998 tl += 2;
3999 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
4000 tl += 2;
4001 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
4002 }
4003 nfsmout:
4004 mbuf_freem(nd->nd_mrep);
4005 return (error);
4006 }
4007
4008 /*
4009 * This function performs the Renew RPC.
4010 */
4011 APPLESTATIC int
4012 nfsrpc_renew(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p)
4013 {
4014 u_int32_t *tl;
4015 struct nfsrv_descript nfsd;
4016 struct nfsrv_descript *nd = &nfsd;
4017 struct nfsmount *nmp;
4018 int error;
4019
4020 nmp = clp->nfsc_nmp;
4021 if (nmp == NULL)
4022 return (0);
4023 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL);
4024 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4025 *tl++ = clp->nfsc_clientid.lval[0];
4026 *tl = clp->nfsc_clientid.lval[1];
4027 nd->nd_flag |= ND_USEGSSNAME;
4028 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4029 NFS_PROG, NFS_VER4, NULL, 1, NULL);
4030 if (error)
4031 return (error);
4032 error = nd->nd_repstat;
4033 mbuf_freem(nd->nd_mrep);
4034 return (error);
4035 }
4036
4037 /*
4038 * This function performs the Releaselockowner RPC.
4039 */
4040 APPLESTATIC int
4041 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
4042 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
4043 {
4044 struct nfsrv_descript nfsd, *nd = &nfsd;
4045 u_int32_t *tl;
4046 int error;
4047 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4048
4049 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL);
4050 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4051 *tl++ = nmp->nm_clp->nfsc_clientid.lval[0];
4052 *tl = nmp->nm_clp->nfsc_clientid.lval[1];
4053 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4054 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4055 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4056 nd->nd_flag |= ND_USEGSSNAME;
4057 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4058 NFS_PROG, NFS_VER4, NULL, 1, NULL);
4059 if (error)
4060 return (error);
4061 error = nd->nd_repstat;
4062 mbuf_freem(nd->nd_mrep);
4063 return (error);
4064 }
4065
4066 /*
4067 * This function performs the Compound to get the mount pt FH.
4068 */
4069 APPLESTATIC int
4070 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4071 NFSPROC_T *p)
4072 {
4073 u_int32_t *tl;
4074 struct nfsrv_descript nfsd;
4075 struct nfsrv_descript *nd = &nfsd;
4076 u_char *cp, *cp2;
4077 int error, cnt, len, setnil;
4078 u_int32_t *opcntp;
4079
4080 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp);
4081 cp = dirpath;
4082 cnt = 0;
4083 do {
4084 setnil = 0;
4085 while (*cp == '/')
4086 cp++;
4087 cp2 = cp;
4088 while (*cp2 != '\0' && *cp2 != '/')
4089 cp2++;
4090 if (*cp2 == '/') {
4091 setnil = 1;
4092 *cp2 = '\0';
4093 }
4094 if (cp2 != cp) {
4095 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4096 *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4097 nfsm_strtom(nd, cp, strlen(cp));
4098 cnt++;
4099 }
4100 if (setnil)
4101 *cp2++ = '/';
4102 cp = cp2;
4103 } while (*cp != '\0');
4104 *opcntp = txdr_unsigned(2 + cnt);
4105 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4106 *tl = txdr_unsigned(NFSV4OP_GETFH);
4107 nd->nd_flag |= ND_USEGSSNAME;
4108 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4109 NFS_PROG, NFS_VER4, NULL, 1, NULL);
4110 if (error)
4111 return (error);
4112 if (nd->nd_repstat == 0) {
4113 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4114 tl += (2 + 2 * cnt);
4115 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4116 len > NFSX_FHMAX) {
4117 nd->nd_repstat = NFSERR_BADXDR;
4118 } else {
4119 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4120 if (nd->nd_repstat == 0)
4121 nmp->nm_fhsize = len;
4122 }
4123 }
4124 error = nd->nd_repstat;
4125 nfsmout:
4126 mbuf_freem(nd->nd_mrep);
4127 return (error);
4128 }
4129
4130 /*
4131 * This function performs the Delegreturn RPC.
4132 */
4133 APPLESTATIC int
4134 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4135 struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4136 {
4137 u_int32_t *tl;
4138 struct nfsrv_descript nfsd;
4139 struct nfsrv_descript *nd = &nfsd;
4140 int error;
4141
4142 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4143 dp->nfsdl_fhlen, NULL);
4144 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4145 *tl++ = dp->nfsdl_stateid.seqid;
4146 *tl++ = dp->nfsdl_stateid.other[0];
4147 *tl++ = dp->nfsdl_stateid.other[1];
4148 *tl = dp->nfsdl_stateid.other[2];
4149 if (syscred)
4150 nd->nd_flag |= ND_USEGSSNAME;
4151 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4152 NFS_PROG, NFS_VER4, NULL, 1, NULL);
4153 if (error)
4154 return (error);
4155 error = nd->nd_repstat;
4156 mbuf_freem(nd->nd_mrep);
4157 return (error);
4158 }
4159
4160 /*
4161 * nfs getacl call.
4162 */
4163 APPLESTATIC int
4164 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4165 struct acl *aclp, void *stuff)
4166 {
4167 struct nfsrv_descript nfsd, *nd = &nfsd;
4168 int error;
4169 nfsattrbit_t attrbits;
4170 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4171
4172 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4173 return (EOPNOTSUPP);
4174 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4175 NFSZERO_ATTRBIT(&attrbits);
4176 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4177 (void) nfsrv_putattrbit(nd, &attrbits);
4178 error = nfscl_request(nd, vp, p, cred, stuff);
4179 if (error)
4180 return (error);
4181 if (!nd->nd_repstat)
4182 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4183 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4184 else
4185 error = nd->nd_repstat;
4186 mbuf_freem(nd->nd_mrep);
4187 return (error);
4188 }
4189
4190 /*
4191 * nfs setacl call.
4192 */
4193 APPLESTATIC int
4194 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4195 struct acl *aclp, void *stuff)
4196 {
4197 int error;
4198 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4199
4200 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4201 return (EOPNOTSUPP);
4202 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4203 return (error);
4204 }
4205
4206 /*
4207 * nfs setacl call.
4208 */
4209 static int
4210 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4211 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4212 {
4213 struct nfsrv_descript nfsd, *nd = &nfsd;
4214 int error;
4215 nfsattrbit_t attrbits;
4216 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4217
4218 if (!NFSHASNFSV4(nmp))
4219 return (EOPNOTSUPP);
4220 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4221 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4222 NFSZERO_ATTRBIT(&attrbits);
4223 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4224 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
4225 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
4226 error = nfscl_request(nd, vp, p, cred, stuff);
4227 if (error)
4228 return (error);
4229 /* Don't care about the pre/postop attributes */
4230 mbuf_freem(nd->nd_mrep);
4231 return (nd->nd_repstat);
4232 }
Cache object: d4185efb9916296497fc8c30c7e61f01
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