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: releng/10.2/sys/fs/nfsclient/nfs_clrpcops.c 284101 2015-06-06 20:54:41Z rmacklem $");
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 /*
71 * nfscl_getsameserver() can return one of three values:
72 * NFSDSP_USETHISSESSION - Use this session for the DS.
73 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new
74 * session.
75 * NFSDSP_NOTFOUND - No matching server was found.
76 */
77 enum nfsclds_state {
78 NFSDSP_USETHISSESSION = 0,
79 NFSDSP_SEQTHISSESSION = 1,
80 NFSDSP_NOTFOUND = 2,
81 };
82
83 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
84 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
85 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
86 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
87 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
88 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
89 void *);
90 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
91 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
92 struct nfsvattr *, struct nfsfh **, int *, int *, void *);
93 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
94 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
95 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
96 int *, void *, int *);
97 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
98 struct nfscllockowner *, u_int64_t, u_int64_t,
99 u_int32_t, struct ucred *, NFSPROC_T *, int);
100 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
101 struct acl *, nfsv4stateid_t *, void *);
102 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int,
103 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **,
104 struct ucred *, NFSPROC_T *);
105 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *,
106 struct nfsclds **, NFSPROC_T *);
107 static void nfscl_initsessionslots(struct nfsclsession *);
108 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *,
109 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
110 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *);
111 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *,
112 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *,
113 NFSPROC_T *);
114 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *,
115 nfsv4stateid_t *, struct nfsclds *, uint64_t, int,
116 struct nfsfh *, int, struct ucred *, NFSPROC_T *);
117 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *,
118 struct nfsclds *, struct nfsclds **);
119 #ifdef notyet
120 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *,
121 struct nfsfh *, struct ucred *, NFSPROC_T *, void *);
122 #endif
123
124 /*
125 * nfs null call from vfs.
126 */
127 APPLESTATIC int
128 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
129 {
130 int error;
131 struct nfsrv_descript nfsd, *nd = &nfsd;
132
133 NFSCL_REQSTART(nd, NFSPROC_NULL, vp);
134 error = nfscl_request(nd, vp, p, cred, NULL);
135 if (nd->nd_repstat && !error)
136 error = nd->nd_repstat;
137 mbuf_freem(nd->nd_mrep);
138 return (error);
139 }
140
141 /*
142 * nfs access rpc op.
143 * For nfs version 3 and 4, use the access rpc to check accessibility. If file
144 * modes are changed on the server, accesses might still fail later.
145 */
146 APPLESTATIC int
147 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
148 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
149 {
150 int error;
151 u_int32_t mode, rmode;
152
153 if (acmode & VREAD)
154 mode = NFSACCESS_READ;
155 else
156 mode = 0;
157 if (vnode_vtype(vp) == VDIR) {
158 if (acmode & VWRITE)
159 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
160 NFSACCESS_DELETE);
161 if (acmode & VEXEC)
162 mode |= NFSACCESS_LOOKUP;
163 } else {
164 if (acmode & VWRITE)
165 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
166 if (acmode & VEXEC)
167 mode |= NFSACCESS_EXECUTE;
168 }
169
170 /*
171 * Now, just call nfsrpc_accessrpc() to do the actual RPC.
172 */
173 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode,
174 NULL);
175
176 /*
177 * The NFS V3 spec does not clarify whether or not
178 * the returned access bits can be a superset of
179 * the ones requested, so...
180 */
181 if (!error && (rmode & mode) != mode)
182 error = EACCES;
183 return (error);
184 }
185
186 /*
187 * The actual rpc, separated out for Darwin.
188 */
189 APPLESTATIC int
190 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
191 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep,
192 void *stuff)
193 {
194 u_int32_t *tl;
195 u_int32_t supported, rmode;
196 int error;
197 struct nfsrv_descript nfsd, *nd = &nfsd;
198 nfsattrbit_t attrbits;
199
200 *attrflagp = 0;
201 supported = mode;
202 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
203 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
204 *tl = txdr_unsigned(mode);
205 if (nd->nd_flag & ND_NFSV4) {
206 /*
207 * And do a Getattr op.
208 */
209 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
210 *tl = txdr_unsigned(NFSV4OP_GETATTR);
211 NFSGETATTR_ATTRBIT(&attrbits);
212 (void) nfsrv_putattrbit(nd, &attrbits);
213 }
214 error = nfscl_request(nd, vp, p, cred, stuff);
215 if (error)
216 return (error);
217 if (nd->nd_flag & ND_NFSV3) {
218 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
219 if (error)
220 goto nfsmout;
221 }
222 if (!nd->nd_repstat) {
223 if (nd->nd_flag & ND_NFSV4) {
224 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
225 supported = fxdr_unsigned(u_int32_t, *tl++);
226 } else {
227 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
228 }
229 rmode = fxdr_unsigned(u_int32_t, *tl);
230 if (nd->nd_flag & ND_NFSV4)
231 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
232
233 /*
234 * It's not obvious what should be done about
235 * unsupported access modes. For now, be paranoid
236 * and clear the unsupported ones.
237 */
238 rmode &= supported;
239 *rmodep = rmode;
240 } else
241 error = nd->nd_repstat;
242 nfsmout:
243 mbuf_freem(nd->nd_mrep);
244 return (error);
245 }
246
247 /*
248 * nfs open rpc
249 */
250 APPLESTATIC int
251 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
252 {
253 struct nfsclopen *op;
254 struct nfscldeleg *dp;
255 struct nfsfh *nfhp;
256 struct nfsnode *np = VTONFS(vp);
257 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
258 u_int32_t mode, clidrev;
259 int ret, newone, error, expireret = 0, retrycnt;
260
261 /*
262 * For NFSv4, Open Ops are only done on Regular Files.
263 */
264 if (vnode_vtype(vp) != VREG)
265 return (0);
266 mode = 0;
267 if (amode & FREAD)
268 mode |= NFSV4OPEN_ACCESSREAD;
269 if (amode & FWRITE)
270 mode |= NFSV4OPEN_ACCESSWRITE;
271 nfhp = np->n_fhp;
272
273 retrycnt = 0;
274 #ifdef notdef
275 { char name[100]; int namel;
276 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
277 bcopy(NFS4NODENAME(np->n_v4), name, namel);
278 name[namel] = '\0';
279 printf("rpcopen p=0x%x name=%s",p->p_pid,name);
280 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
281 else printf(" fhl=0\n");
282 }
283 #endif
284 do {
285 dp = NULL;
286 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
287 cred, p, NULL, &op, &newone, &ret, 1);
288 if (error) {
289 return (error);
290 }
291 if (nmp->nm_clp != NULL)
292 clidrev = nmp->nm_clp->nfsc_clientidrev;
293 else
294 clidrev = 0;
295 if (ret == NFSCLOPEN_DOOPEN) {
296 if (np->n_v4 != NULL) {
297 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data,
298 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
299 np->n_fhp->nfh_len, mode, op,
300 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp,
301 0, 0x0, cred, p, 0, 0);
302 if (dp != NULL) {
303 #ifdef APPLE
304 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
305 #else
306 NFSLOCKNODE(np);
307 np->n_flag &= ~NDELEGMOD;
308 /*
309 * Invalidate the attribute cache, so that
310 * attributes that pre-date the issue of a
311 * delegation are not cached, since the
312 * cached attributes will remain valid while
313 * the delegation is held.
314 */
315 NFSINVALATTRCACHE(np);
316 NFSUNLOCKNODE(np);
317 #endif
318 (void) nfscl_deleg(nmp->nm_mountp,
319 op->nfso_own->nfsow_clp,
320 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
321 }
322 } else {
323 error = EIO;
324 }
325 newnfs_copyincred(cred, &op->nfso_cred);
326 } else if (ret == NFSCLOPEN_SETCRED)
327 /*
328 * This is a new local open on a delegation. It needs
329 * to have credentials so that an open can be done
330 * against the server during recovery.
331 */
332 newnfs_copyincred(cred, &op->nfso_cred);
333
334 /*
335 * nfso_opencnt is the count of how many VOP_OPEN()s have
336 * been done on this Open successfully and a VOP_CLOSE()
337 * is expected for each of these.
338 * If error is non-zero, don't increment it, since the Open
339 * hasn't succeeded yet.
340 */
341 if (!error)
342 op->nfso_opencnt++;
343 nfscl_openrelease(op, error, newone);
344 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
345 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
346 error == NFSERR_BADSESSION) {
347 (void) nfs_catnap(PZERO, error, "nfs_open");
348 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
349 && clidrev != 0) {
350 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
351 retrycnt++;
352 }
353 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
354 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
355 error == NFSERR_BADSESSION ||
356 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
357 expireret == 0 && clidrev != 0 && retrycnt < 4));
358 if (error && retrycnt >= 4)
359 error = EIO;
360 return (error);
361 }
362
363 /*
364 * the actual open rpc
365 */
366 APPLESTATIC int
367 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
368 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
369 u_int8_t *name, int namelen, struct nfscldeleg **dpp,
370 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
371 int syscred, int recursed)
372 {
373 u_int32_t *tl;
374 struct nfsrv_descript nfsd, *nd = &nfsd;
375 struct nfscldeleg *dp, *ndp = NULL;
376 struct nfsvattr nfsva;
377 u_int32_t rflags, deleg;
378 nfsattrbit_t attrbits;
379 int error, ret, acesize, limitby;
380
381 dp = *dpp;
382 *dpp = NULL;
383 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL);
384 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
385 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
386 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
387 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
388 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
389 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
390 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
391 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
392 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
393 if (reclaim) {
394 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
395 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
396 *tl = txdr_unsigned(delegtype);
397 } else {
398 if (dp != NULL) {
399 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
400 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
401 if (NFSHASNFSV4N(nmp))
402 *tl++ = 0;
403 else
404 *tl++ = dp->nfsdl_stateid.seqid;
405 *tl++ = dp->nfsdl_stateid.other[0];
406 *tl++ = dp->nfsdl_stateid.other[1];
407 *tl = dp->nfsdl_stateid.other[2];
408 } else {
409 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
410 }
411 (void) nfsm_strtom(nd, name, namelen);
412 }
413 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
414 *tl = txdr_unsigned(NFSV4OP_GETATTR);
415 NFSZERO_ATTRBIT(&attrbits);
416 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
418 (void) nfsrv_putattrbit(nd, &attrbits);
419 if (syscred)
420 nd->nd_flag |= ND_USEGSSNAME;
421 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
422 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
423 if (error)
424 return (error);
425 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
426 if (!nd->nd_repstat) {
427 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
428 6 * NFSX_UNSIGNED);
429 op->nfso_stateid.seqid = *tl++;
430 op->nfso_stateid.other[0] = *tl++;
431 op->nfso_stateid.other[1] = *tl++;
432 op->nfso_stateid.other[2] = *tl;
433 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
434 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
435 if (error)
436 goto nfsmout;
437 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
438 deleg = fxdr_unsigned(u_int32_t, *tl);
439 if (deleg == NFSV4OPEN_DELEGATEREAD ||
440 deleg == NFSV4OPEN_DELEGATEWRITE) {
441 if (!(op->nfso_own->nfsow_clp->nfsc_flags &
442 NFSCLFLAGS_FIRSTDELEG))
443 op->nfso_own->nfsow_clp->nfsc_flags |=
444 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
445 MALLOC(ndp, struct nfscldeleg *,
446 sizeof (struct nfscldeleg) + newfhlen,
447 M_NFSCLDELEG, M_WAITOK);
448 LIST_INIT(&ndp->nfsdl_owner);
449 LIST_INIT(&ndp->nfsdl_lock);
450 ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
451 ndp->nfsdl_fhlen = newfhlen;
452 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
453 newnfs_copyincred(cred, &ndp->nfsdl_cred);
454 nfscl_lockinit(&ndp->nfsdl_rwlock);
455 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
456 NFSX_UNSIGNED);
457 ndp->nfsdl_stateid.seqid = *tl++;
458 ndp->nfsdl_stateid.other[0] = *tl++;
459 ndp->nfsdl_stateid.other[1] = *tl++;
460 ndp->nfsdl_stateid.other[2] = *tl++;
461 ret = fxdr_unsigned(int, *tl);
462 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
463 ndp->nfsdl_flags = NFSCLDL_WRITE;
464 /*
465 * Indicates how much the file can grow.
466 */
467 NFSM_DISSECT(tl, u_int32_t *,
468 3 * NFSX_UNSIGNED);
469 limitby = fxdr_unsigned(int, *tl++);
470 switch (limitby) {
471 case NFSV4OPEN_LIMITSIZE:
472 ndp->nfsdl_sizelimit = fxdr_hyper(tl);
473 break;
474 case NFSV4OPEN_LIMITBLOCKS:
475 ndp->nfsdl_sizelimit =
476 fxdr_unsigned(u_int64_t, *tl++);
477 ndp->nfsdl_sizelimit *=
478 fxdr_unsigned(u_int64_t, *tl);
479 break;
480 default:
481 error = NFSERR_BADXDR;
482 goto nfsmout;
483 };
484 } else {
485 ndp->nfsdl_flags = NFSCLDL_READ;
486 }
487 if (ret)
488 ndp->nfsdl_flags |= NFSCLDL_RECALL;
489 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
490 &acesize, p);
491 if (error)
492 goto nfsmout;
493 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
494 error = NFSERR_BADXDR;
495 goto nfsmout;
496 }
497 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
498 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
499 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
500 NULL, NULL, NULL, p, cred);
501 if (error)
502 goto nfsmout;
503 if (ndp != NULL) {
504 ndp->nfsdl_change = nfsva.na_filerev;
505 ndp->nfsdl_modtime = nfsva.na_mtime;
506 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
507 }
508 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
509 do {
510 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
511 cred, p);
512 if (ret == NFSERR_DELAY)
513 (void) nfs_catnap(PZERO, ret, "nfs_open");
514 } while (ret == NFSERR_DELAY);
515 error = ret;
516 }
517 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
518 nfscl_assumeposixlocks)
519 op->nfso_posixlock = 1;
520 else
521 op->nfso_posixlock = 0;
522
523 /*
524 * If the server is handing out delegations, but we didn't
525 * get one because an OpenConfirm was required, try the
526 * Open again, to get a delegation. This is a harmless no-op,
527 * from a server's point of view.
528 */
529 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
530 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
531 && !error && dp == NULL && ndp == NULL && !recursed) {
532 do {
533 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
534 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
535 cred, p, syscred, 1);
536 if (ret == NFSERR_DELAY)
537 (void) nfs_catnap(PZERO, ret, "nfs_open2");
538 } while (ret == NFSERR_DELAY);
539 if (ret) {
540 if (ndp != NULL)
541 FREE((caddr_t)ndp, M_NFSCLDELEG);
542 if (ret == NFSERR_STALECLIENTID ||
543 ret == NFSERR_STALEDONTRECOVER ||
544 ret == NFSERR_BADSESSION)
545 error = ret;
546 }
547 }
548 }
549 if (nd->nd_repstat != 0 && error == 0)
550 error = nd->nd_repstat;
551 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
552 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
553 nfsmout:
554 if (!error)
555 *dpp = ndp;
556 else if (ndp != NULL)
557 FREE((caddr_t)ndp, M_NFSCLDELEG);
558 mbuf_freem(nd->nd_mrep);
559 return (error);
560 }
561
562 /*
563 * open downgrade rpc
564 */
565 APPLESTATIC int
566 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
567 struct ucred *cred, NFSPROC_T *p)
568 {
569 u_int32_t *tl;
570 struct nfsrv_descript nfsd, *nd = &nfsd;
571 int error;
572
573 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
574 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
575 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp))))
576 *tl++ = 0;
577 else
578 *tl++ = op->nfso_stateid.seqid;
579 *tl++ = op->nfso_stateid.other[0];
580 *tl++ = op->nfso_stateid.other[1];
581 *tl++ = op->nfso_stateid.other[2];
582 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
583 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
584 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
585 error = nfscl_request(nd, vp, p, cred, NULL);
586 if (error)
587 return (error);
588 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
589 if (!nd->nd_repstat) {
590 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
591 op->nfso_stateid.seqid = *tl++;
592 op->nfso_stateid.other[0] = *tl++;
593 op->nfso_stateid.other[1] = *tl++;
594 op->nfso_stateid.other[2] = *tl;
595 }
596 if (nd->nd_repstat && error == 0)
597 error = nd->nd_repstat;
598 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
599 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
600 nfsmout:
601 mbuf_freem(nd->nd_mrep);
602 return (error);
603 }
604
605 /*
606 * V4 Close operation.
607 */
608 APPLESTATIC int
609 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
610 {
611 struct nfsclclient *clp;
612 int error;
613
614 if (vnode_vtype(vp) != VREG)
615 return (0);
616 if (doclose)
617 error = nfscl_doclose(vp, &clp, p);
618 else
619 error = nfscl_getclose(vp, &clp);
620 if (error)
621 return (error);
622
623 nfscl_clientrelease(clp);
624 return (0);
625 }
626
627 /*
628 * Close the open.
629 */
630 APPLESTATIC void
631 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
632 {
633 struct nfsrv_descript nfsd, *nd = &nfsd;
634 struct nfscllockowner *lp, *nlp;
635 struct nfscllock *lop, *nlop;
636 struct ucred *tcred;
637 u_int64_t off = 0, len = 0;
638 u_int32_t type = NFSV4LOCKT_READ;
639 int error, do_unlock, trycnt;
640
641 tcred = newnfs_getcred();
642 newnfs_copycred(&op->nfso_cred, tcred);
643 /*
644 * (Theoretically this could be done in the same
645 * compound as the close, but having multiple
646 * sequenced Ops in the same compound might be
647 * too scary for some servers.)
648 */
649 if (op->nfso_posixlock) {
650 off = 0;
651 len = NFS64BITSSET;
652 type = NFSV4LOCKT_READ;
653 }
654
655 /*
656 * Since this function is only called from VOP_INACTIVE(), no
657 * other thread will be manipulating this Open. As such, the
658 * lock lists are not being changed by other threads, so it should
659 * be safe to do this without locking.
660 */
661 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
662 do_unlock = 1;
663 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
664 if (op->nfso_posixlock == 0) {
665 off = lop->nfslo_first;
666 len = lop->nfslo_end - lop->nfslo_first;
667 if (lop->nfslo_type == F_WRLCK)
668 type = NFSV4LOCKT_WRITE;
669 else
670 type = NFSV4LOCKT_READ;
671 }
672 if (do_unlock) {
673 trycnt = 0;
674 do {
675 error = nfsrpc_locku(nd, nmp, lp, off,
676 len, type, tcred, p, 0);
677 if ((nd->nd_repstat == NFSERR_GRACE ||
678 nd->nd_repstat == NFSERR_DELAY) &&
679 error == 0)
680 (void) nfs_catnap(PZERO,
681 (int)nd->nd_repstat,
682 "nfs_close");
683 } while ((nd->nd_repstat == NFSERR_GRACE ||
684 nd->nd_repstat == NFSERR_DELAY) &&
685 error == 0 && trycnt++ < 5);
686 if (op->nfso_posixlock)
687 do_unlock = 0;
688 }
689 nfscl_freelock(lop, 0);
690 }
691 /*
692 * Do a ReleaseLockOwner.
693 * The lock owner name nfsl_owner may be used by other opens for
694 * other files but the lock_owner4 name that nfsrpc_rellockown()
695 * puts on the wire has the file handle for this file appended
696 * to it, so it can be done now.
697 */
698 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
699 lp->nfsl_open->nfso_fhlen, tcred, p);
700 }
701
702 /*
703 * There could be other Opens for different files on the same
704 * OpenOwner, so locking is required.
705 */
706 NFSLOCKCLSTATE();
707 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
708 NFSUNLOCKCLSTATE();
709 do {
710 error = nfscl_tryclose(op, tcred, nmp, p);
711 if (error == NFSERR_GRACE)
712 (void) nfs_catnap(PZERO, error, "nfs_close");
713 } while (error == NFSERR_GRACE);
714 NFSLOCKCLSTATE();
715 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
716
717 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
718 nfscl_freelockowner(lp, 0);
719 nfscl_freeopen(op, 0);
720 NFSUNLOCKCLSTATE();
721 NFSFREECRED(tcred);
722 }
723
724 /*
725 * The actual Close RPC.
726 */
727 APPLESTATIC int
728 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
729 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
730 int syscred)
731 {
732 u_int32_t *tl;
733 int error;
734
735 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
736 op->nfso_fhlen, NULL, NULL);
737 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
738 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
739 if (NFSHASNFSV4N(nmp))
740 *tl++ = 0;
741 else
742 *tl++ = op->nfso_stateid.seqid;
743 *tl++ = op->nfso_stateid.other[0];
744 *tl++ = op->nfso_stateid.other[1];
745 *tl = op->nfso_stateid.other[2];
746 if (syscred)
747 nd->nd_flag |= ND_USEGSSNAME;
748 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
749 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
750 if (error)
751 return (error);
752 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
753 if (nd->nd_repstat == 0)
754 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
755 error = nd->nd_repstat;
756 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
757 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
758 nfsmout:
759 mbuf_freem(nd->nd_mrep);
760 return (error);
761 }
762
763 /*
764 * V4 Open Confirm RPC.
765 */
766 APPLESTATIC int
767 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
768 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
769 {
770 u_int32_t *tl;
771 struct nfsrv_descript nfsd, *nd = &nfsd;
772 struct nfsmount *nmp;
773 int error;
774
775 nmp = VFSTONFS(vnode_mount(vp));
776 if (NFSHASNFSV4N(nmp))
777 return (0); /* No confirmation for NFSv4.1. */
778 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL);
779 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
780 *tl++ = op->nfso_stateid.seqid;
781 *tl++ = op->nfso_stateid.other[0];
782 *tl++ = op->nfso_stateid.other[1];
783 *tl++ = op->nfso_stateid.other[2];
784 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
785 error = nfscl_request(nd, vp, p, cred, NULL);
786 if (error)
787 return (error);
788 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
789 if (!nd->nd_repstat) {
790 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
791 op->nfso_stateid.seqid = *tl++;
792 op->nfso_stateid.other[0] = *tl++;
793 op->nfso_stateid.other[1] = *tl++;
794 op->nfso_stateid.other[2] = *tl;
795 }
796 error = nd->nd_repstat;
797 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
798 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
799 nfsmout:
800 mbuf_freem(nd->nd_mrep);
801 return (error);
802 }
803
804 /*
805 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
806 * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
807 */
808 APPLESTATIC int
809 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
810 struct ucred *cred, NFSPROC_T *p)
811 {
812 u_int32_t *tl;
813 struct nfsrv_descript nfsd;
814 struct nfsrv_descript *nd = &nfsd;
815 nfsattrbit_t attrbits;
816 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
817 u_short port;
818 int error, isinet6 = 0, callblen;
819 nfsquad_t confirm;
820 u_int32_t lease;
821 static u_int32_t rev = 0;
822 struct nfsclds *dsp, *ndsp, *tdsp;
823
824 if (nfsboottime.tv_sec == 0)
825 NFSSETBOOTTIME(nfsboottime);
826 clp->nfsc_rev = rev++;
827 if (NFSHASNFSV4N(nmp)) {
828 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq,
829 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p);
830 NFSCL_DEBUG(1, "aft exch=%d\n", error);
831 if (error == 0) {
832 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
833 &nmp->nm_sockreq,
834 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
835 if (error == 0) {
836 NFSLOCKMNT(nmp);
837 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess,
838 nfsclds_list, ndsp)
839 nfscl_freenfsclds(tdsp);
840 TAILQ_INIT(&nmp->nm_sess);
841 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
842 nfsclds_list);
843 NFSUNLOCKMNT(nmp);
844 } else
845 nfscl_freenfsclds(dsp);
846 NFSCL_DEBUG(1, "aft createsess=%d\n", error);
847 }
848 if (error == 0 && reclaim == 0) {
849 error = nfsrpc_reclaimcomplete(nmp, cred, p);
850 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error);
851 if (error == NFSERR_COMPLETEALREADY ||
852 error == NFSERR_NOTSUPP)
853 /* Ignore this error. */
854 error = 0;
855 }
856 return (error);
857 }
858
859 /*
860 * Allocate a single session structure for NFSv4.0, because some of
861 * the fields are used by NFSv4.0 although it doesn't do a session.
862 */
863 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO);
864 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
865 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF);
866 NFSLOCKMNT(nmp);
867 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list);
868 NFSUNLOCKMNT(nmp);
869
870 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL);
871 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
872 *tl++ = txdr_unsigned(nfsboottime.tv_sec);
873 *tl = txdr_unsigned(clp->nfsc_rev);
874 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
875
876 /*
877 * set up the callback address
878 */
879 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
880 *tl = txdr_unsigned(NFS_CALLBCKPROG);
881 callblen = strlen(nfsv4_callbackaddr);
882 if (callblen == 0)
883 cp = nfscl_getmyip(nmp, &isinet6);
884 if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
885 (callblen > 0 || cp != NULL)) {
886 port = htons(nfsv4_cbport);
887 cp2 = (u_int8_t *)&port;
888 #ifdef INET6
889 if ((callblen > 0 &&
890 strchr(nfsv4_callbackaddr, ':')) || isinet6) {
891 char ip6buf[INET6_ADDRSTRLEN], *ip6add;
892
893 (void) nfsm_strtom(nd, "tcp6", 4);
894 if (callblen == 0) {
895 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
896 ip6add = ip6buf;
897 } else {
898 ip6add = nfsv4_callbackaddr;
899 }
900 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
901 ip6add, cp2[0], cp2[1]);
902 } else
903 #endif
904 {
905 (void) nfsm_strtom(nd, "tcp", 3);
906 if (callblen == 0)
907 snprintf(addr, INET6_ADDRSTRLEN + 9,
908 "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
909 cp[2], cp[3], cp2[0], cp2[1]);
910 else
911 snprintf(addr, INET6_ADDRSTRLEN + 9,
912 "%s.%d.%d", nfsv4_callbackaddr,
913 cp2[0], cp2[1]);
914 }
915 (void) nfsm_strtom(nd, addr, strlen(addr));
916 } else {
917 (void) nfsm_strtom(nd, "tcp", 3);
918 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
919 }
920 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
921 *tl = txdr_unsigned(clp->nfsc_cbident);
922 nd->nd_flag |= ND_USEGSSNAME;
923 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
924 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
925 if (error)
926 return (error);
927 if (nd->nd_repstat == 0) {
928 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
929 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++;
930 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++;
931 confirm.lval[0] = *tl++;
932 confirm.lval[1] = *tl;
933 mbuf_freem(nd->nd_mrep);
934 nd->nd_mrep = NULL;
935
936 /*
937 * and confirm it.
938 */
939 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
940 NULL);
941 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
942 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
943 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
944 *tl++ = confirm.lval[0];
945 *tl = confirm.lval[1];
946 nd->nd_flag |= ND_USEGSSNAME;
947 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
948 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
949 if (error)
950 return (error);
951 mbuf_freem(nd->nd_mrep);
952 nd->nd_mrep = NULL;
953 if (nd->nd_repstat == 0) {
954 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
955 nmp->nm_fhsize, NULL, NULL);
956 NFSZERO_ATTRBIT(&attrbits);
957 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
958 (void) nfsrv_putattrbit(nd, &attrbits);
959 nd->nd_flag |= ND_USEGSSNAME;
960 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
961 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
962 if (error)
963 return (error);
964 if (nd->nd_repstat == 0) {
965 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
966 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
967 if (error)
968 goto nfsmout;
969 clp->nfsc_renew = NFSCL_RENEW(lease);
970 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
971 clp->nfsc_clientidrev++;
972 if (clp->nfsc_clientidrev == 0)
973 clp->nfsc_clientidrev++;
974 }
975 }
976 }
977 error = nd->nd_repstat;
978 nfsmout:
979 mbuf_freem(nd->nd_mrep);
980 return (error);
981 }
982
983 /*
984 * nfs getattr call.
985 */
986 APPLESTATIC int
987 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
988 struct nfsvattr *nap, void *stuff)
989 {
990 struct nfsrv_descript nfsd, *nd = &nfsd;
991 int error;
992 nfsattrbit_t attrbits;
993
994 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
995 if (nd->nd_flag & ND_NFSV4) {
996 NFSGETATTR_ATTRBIT(&attrbits);
997 (void) nfsrv_putattrbit(nd, &attrbits);
998 }
999 error = nfscl_request(nd, vp, p, cred, stuff);
1000 if (error)
1001 return (error);
1002 if (!nd->nd_repstat)
1003 error = nfsm_loadattr(nd, nap);
1004 else
1005 error = nd->nd_repstat;
1006 mbuf_freem(nd->nd_mrep);
1007 return (error);
1008 }
1009
1010 /*
1011 * nfs getattr call with non-vnode arguemnts.
1012 */
1013 APPLESTATIC int
1014 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
1015 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp,
1016 uint32_t *leasep)
1017 {
1018 struct nfsrv_descript nfsd, *nd = &nfsd;
1019 int error, vers = NFS_VER2;
1020 nfsattrbit_t attrbits;
1021
1022 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL);
1023 if (nd->nd_flag & ND_NFSV4) {
1024 vers = NFS_VER4;
1025 NFSGETATTR_ATTRBIT(&attrbits);
1026 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1027 (void) nfsrv_putattrbit(nd, &attrbits);
1028 } else if (nd->nd_flag & ND_NFSV3) {
1029 vers = NFS_VER3;
1030 }
1031 if (syscred)
1032 nd->nd_flag |= ND_USEGSSNAME;
1033 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1034 NFS_PROG, vers, NULL, 1, xidp, NULL);
1035 if (error)
1036 return (error);
1037 if (nd->nd_repstat == 0) {
1038 if ((nd->nd_flag & ND_NFSV4) != 0)
1039 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
1040 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL,
1041 NULL, NULL);
1042 else
1043 error = nfsm_loadattr(nd, nap);
1044 } else
1045 error = nd->nd_repstat;
1046 mbuf_freem(nd->nd_mrep);
1047 return (error);
1048 }
1049
1050 /*
1051 * Do an nfs setattr operation.
1052 */
1053 APPLESTATIC int
1054 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
1055 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
1056 void *stuff)
1057 {
1058 int error, expireret = 0, openerr, retrycnt;
1059 u_int32_t clidrev = 0, mode;
1060 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1061 struct nfsfh *nfhp;
1062 nfsv4stateid_t stateid;
1063 void *lckp;
1064
1065 if (nmp->nm_clp != NULL)
1066 clidrev = nmp->nm_clp->nfsc_clientidrev;
1067 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
1068 mode = NFSV4OPEN_ACCESSWRITE;
1069 else
1070 mode = NFSV4OPEN_ACCESSREAD;
1071 retrycnt = 0;
1072 do {
1073 lckp = NULL;
1074 openerr = 1;
1075 if (NFSHASNFSV4(nmp)) {
1076 nfhp = VTONFS(vp)->n_fhp;
1077 error = nfscl_getstateid(vp, nfhp->nfh_fh,
1078 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp);
1079 if (error && vnode_vtype(vp) == VREG &&
1080 (mode == NFSV4OPEN_ACCESSWRITE ||
1081 nfstest_openallsetattr)) {
1082 /*
1083 * No Open stateid, so try and open the file
1084 * now.
1085 */
1086 if (mode == NFSV4OPEN_ACCESSWRITE)
1087 openerr = nfsrpc_open(vp, FWRITE, cred,
1088 p);
1089 else
1090 openerr = nfsrpc_open(vp, FREAD, cred,
1091 p);
1092 if (!openerr)
1093 (void) nfscl_getstateid(vp,
1094 nfhp->nfh_fh, nfhp->nfh_len,
1095 mode, 0, cred, p, &stateid, &lckp);
1096 }
1097 }
1098 if (vap != NULL)
1099 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
1100 rnap, attrflagp, stuff);
1101 else
1102 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
1103 stuff);
1104 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
1105 nfscl_initiate_recovery(nmp->nm_clp);
1106 if (lckp != NULL)
1107 nfscl_lockderef(lckp);
1108 if (!openerr)
1109 (void) nfsrpc_close(vp, 0, p);
1110 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1111 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1112 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1113 (void) nfs_catnap(PZERO, error, "nfs_setattr");
1114 } else if ((error == NFSERR_EXPIRED ||
1115 error == NFSERR_BADSTATEID) && clidrev != 0) {
1116 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1117 }
1118 retrycnt++;
1119 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1120 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1121 error == NFSERR_BADSESSION ||
1122 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1123 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1124 expireret == 0 && clidrev != 0 && retrycnt < 4));
1125 if (error && retrycnt >= 4)
1126 error = EIO;
1127 return (error);
1128 }
1129
1130 static int
1131 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1132 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1133 struct nfsvattr *rnap, int *attrflagp, void *stuff)
1134 {
1135 u_int32_t *tl;
1136 struct nfsrv_descript nfsd, *nd = &nfsd;
1137 int error;
1138 nfsattrbit_t attrbits;
1139
1140 *attrflagp = 0;
1141 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1142 if (nd->nd_flag & ND_NFSV4)
1143 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1144 vap->va_type = vnode_vtype(vp);
1145 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1146 if (nd->nd_flag & ND_NFSV3) {
1147 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1148 *tl = newnfs_false;
1149 } else if (nd->nd_flag & ND_NFSV4) {
1150 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1151 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1152 NFSGETATTR_ATTRBIT(&attrbits);
1153 (void) nfsrv_putattrbit(nd, &attrbits);
1154 }
1155 error = nfscl_request(nd, vp, p, cred, stuff);
1156 if (error)
1157 return (error);
1158 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1159 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1160 if ((nd->nd_flag & ND_NFSV4) && !error)
1161 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1162 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1163 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1164 mbuf_freem(nd->nd_mrep);
1165 if (nd->nd_repstat && !error)
1166 error = nd->nd_repstat;
1167 return (error);
1168 }
1169
1170 /*
1171 * nfs lookup rpc
1172 */
1173 APPLESTATIC int
1174 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1175 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1176 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1177 {
1178 u_int32_t *tl;
1179 struct nfsrv_descript nfsd, *nd = &nfsd;
1180 struct nfsmount *nmp;
1181 struct nfsnode *np;
1182 struct nfsfh *nfhp;
1183 nfsattrbit_t attrbits;
1184 int error = 0, lookupp = 0;
1185
1186 *attrflagp = 0;
1187 *dattrflagp = 0;
1188 if (vnode_vtype(dvp) != VDIR)
1189 return (ENOTDIR);
1190 nmp = VFSTONFS(vnode_mount(dvp));
1191 if (len > NFS_MAXNAMLEN)
1192 return (ENAMETOOLONG);
1193 if (NFSHASNFSV4(nmp) && len == 1 &&
1194 name[0] == '.') {
1195 /*
1196 * Just return the current dir's fh.
1197 */
1198 np = VTONFS(dvp);
1199 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1200 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1201 nfhp->nfh_len = np->n_fhp->nfh_len;
1202 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1203 *nfhpp = nfhp;
1204 return (0);
1205 }
1206 if (NFSHASNFSV4(nmp) && len == 2 &&
1207 name[0] == '.' && name[1] == '.') {
1208 lookupp = 1;
1209 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1210 } else {
1211 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1212 (void) nfsm_strtom(nd, name, len);
1213 }
1214 if (nd->nd_flag & ND_NFSV4) {
1215 NFSGETATTR_ATTRBIT(&attrbits);
1216 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1217 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1218 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1219 (void) nfsrv_putattrbit(nd, &attrbits);
1220 }
1221 error = nfscl_request(nd, dvp, p, cred, stuff);
1222 if (error)
1223 return (error);
1224 if (nd->nd_repstat) {
1225 /*
1226 * When an NFSv4 Lookupp returns ENOENT, it means that
1227 * the lookup is at the root of an fs, so return this dir.
1228 */
1229 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1230 np = VTONFS(dvp);
1231 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1232 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1233 nfhp->nfh_len = np->n_fhp->nfh_len;
1234 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1235 *nfhpp = nfhp;
1236 mbuf_freem(nd->nd_mrep);
1237 return (0);
1238 }
1239 if (nd->nd_flag & ND_NFSV3)
1240 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1241 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
1242 ND_NFSV4) {
1243 /* Load the directory attributes. */
1244 error = nfsm_loadattr(nd, dnap);
1245 if (error == 0)
1246 *dattrflagp = 1;
1247 }
1248 goto nfsmout;
1249 }
1250 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1251 /* Load the directory attributes. */
1252 error = nfsm_loadattr(nd, dnap);
1253 if (error != 0)
1254 goto nfsmout;
1255 *dattrflagp = 1;
1256 /* Skip over the Lookup and GetFH operation status values. */
1257 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1258 }
1259 error = nfsm_getfh(nd, nfhpp);
1260 if (error)
1261 goto nfsmout;
1262
1263 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1264 if ((nd->nd_flag & ND_NFSV3) && !error)
1265 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1266 nfsmout:
1267 mbuf_freem(nd->nd_mrep);
1268 if (!error && nd->nd_repstat)
1269 error = nd->nd_repstat;
1270 return (error);
1271 }
1272
1273 /*
1274 * Do a readlink rpc.
1275 */
1276 APPLESTATIC int
1277 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1278 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1279 {
1280 u_int32_t *tl;
1281 struct nfsrv_descript nfsd, *nd = &nfsd;
1282 struct nfsnode *np = VTONFS(vp);
1283 nfsattrbit_t attrbits;
1284 int error, len, cangetattr = 1;
1285
1286 *attrflagp = 0;
1287 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1288 if (nd->nd_flag & ND_NFSV4) {
1289 /*
1290 * And do a Getattr op.
1291 */
1292 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1293 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1294 NFSGETATTR_ATTRBIT(&attrbits);
1295 (void) nfsrv_putattrbit(nd, &attrbits);
1296 }
1297 error = nfscl_request(nd, vp, p, cred, stuff);
1298 if (error)
1299 return (error);
1300 if (nd->nd_flag & ND_NFSV3)
1301 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1302 if (!nd->nd_repstat && !error) {
1303 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1304 /*
1305 * This seems weird to me, but must have been added to
1306 * FreeBSD for some reason. The only thing I can think of
1307 * is that there was/is some server that replies with
1308 * more link data than it should?
1309 */
1310 if (len == NFS_MAXPATHLEN) {
1311 NFSLOCKNODE(np);
1312 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1313 len = np->n_size;
1314 cangetattr = 0;
1315 }
1316 NFSUNLOCKNODE(np);
1317 }
1318 error = nfsm_mbufuio(nd, uiop, len);
1319 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1320 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1321 }
1322 if (nd->nd_repstat && !error)
1323 error = nd->nd_repstat;
1324 nfsmout:
1325 mbuf_freem(nd->nd_mrep);
1326 return (error);
1327 }
1328
1329 /*
1330 * Read operation.
1331 */
1332 APPLESTATIC int
1333 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1334 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1335 {
1336 int error, expireret = 0, retrycnt;
1337 u_int32_t clidrev = 0;
1338 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1339 struct nfsnode *np = VTONFS(vp);
1340 struct ucred *newcred;
1341 struct nfsfh *nfhp = NULL;
1342 nfsv4stateid_t stateid;
1343 void *lckp;
1344
1345 if (nmp->nm_clp != NULL)
1346 clidrev = nmp->nm_clp->nfsc_clientidrev;
1347 newcred = cred;
1348 if (NFSHASNFSV4(nmp)) {
1349 nfhp = np->n_fhp;
1350 newcred = NFSNEWCRED(cred);
1351 }
1352 retrycnt = 0;
1353 do {
1354 lckp = NULL;
1355 if (NFSHASNFSV4(nmp))
1356 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1357 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid,
1358 &lckp);
1359 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1360 attrflagp, stuff);
1361 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
1362 nfscl_initiate_recovery(nmp->nm_clp);
1363 if (lckp != NULL)
1364 nfscl_lockderef(lckp);
1365 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1366 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1367 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1368 (void) nfs_catnap(PZERO, error, "nfs_read");
1369 } else if ((error == NFSERR_EXPIRED ||
1370 error == NFSERR_BADSTATEID) && clidrev != 0) {
1371 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1372 }
1373 retrycnt++;
1374 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1375 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1376 error == NFSERR_BADSESSION ||
1377 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1378 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1379 expireret == 0 && clidrev != 0 && retrycnt < 4));
1380 if (error && retrycnt >= 4)
1381 error = EIO;
1382 if (NFSHASNFSV4(nmp))
1383 NFSFREECRED(newcred);
1384 return (error);
1385 }
1386
1387 /*
1388 * The actual read RPC.
1389 */
1390 static int
1391 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1392 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1393 int *attrflagp, void *stuff)
1394 {
1395 u_int32_t *tl;
1396 int error = 0, len, retlen, tsiz, eof = 0;
1397 struct nfsrv_descript nfsd;
1398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1399 struct nfsrv_descript *nd = &nfsd;
1400 int rsize;
1401 off_t tmp_off;
1402
1403 *attrflagp = 0;
1404 tsiz = uio_uio_resid(uiop);
1405 tmp_off = uiop->uio_offset + tsiz;
1406 NFSLOCKMNT(nmp);
1407 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1408 NFSUNLOCKMNT(nmp);
1409 return (EFBIG);
1410 }
1411 rsize = nmp->nm_rsize;
1412 NFSUNLOCKMNT(nmp);
1413 nd->nd_mrep = NULL;
1414 while (tsiz > 0) {
1415 *attrflagp = 0;
1416 len = (tsiz > rsize) ? rsize : tsiz;
1417 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1418 if (nd->nd_flag & ND_NFSV4)
1419 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1420 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1421 if (nd->nd_flag & ND_NFSV2) {
1422 *tl++ = txdr_unsigned(uiop->uio_offset);
1423 *tl++ = txdr_unsigned(len);
1424 *tl = 0;
1425 } else {
1426 txdr_hyper(uiop->uio_offset, tl);
1427 *(tl + 2) = txdr_unsigned(len);
1428 }
1429 /*
1430 * Since I can't do a Getattr for NFSv4 for Write, there
1431 * doesn't seem any point in doing one here, either.
1432 * (See the comment in nfsrpc_writerpc() for more info.)
1433 */
1434 error = nfscl_request(nd, vp, p, cred, stuff);
1435 if (error)
1436 return (error);
1437 if (nd->nd_flag & ND_NFSV3) {
1438 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1439 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1440 error = nfsm_loadattr(nd, nap);
1441 if (!error)
1442 *attrflagp = 1;
1443 }
1444 if (nd->nd_repstat || error) {
1445 if (!error)
1446 error = nd->nd_repstat;
1447 goto nfsmout;
1448 }
1449 if (nd->nd_flag & ND_NFSV3) {
1450 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1451 eof = fxdr_unsigned(int, *(tl + 1));
1452 } else if (nd->nd_flag & ND_NFSV4) {
1453 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1454 eof = fxdr_unsigned(int, *tl);
1455 }
1456 NFSM_STRSIZ(retlen, len);
1457 error = nfsm_mbufuio(nd, uiop, retlen);
1458 if (error)
1459 goto nfsmout;
1460 mbuf_freem(nd->nd_mrep);
1461 nd->nd_mrep = NULL;
1462 tsiz -= retlen;
1463 if (!(nd->nd_flag & ND_NFSV2)) {
1464 if (eof || retlen == 0)
1465 tsiz = 0;
1466 } else if (retlen < len)
1467 tsiz = 0;
1468 }
1469 return (0);
1470 nfsmout:
1471 if (nd->nd_mrep != NULL)
1472 mbuf_freem(nd->nd_mrep);
1473 return (error);
1474 }
1475
1476 /*
1477 * nfs write operation
1478 * When called_from_strategy != 0, it should return EIO for an error that
1479 * indicates recovery is in progress, so that the buffer will be left
1480 * dirty and be written back to the server later. If it loops around,
1481 * the recovery thread could get stuck waiting for the buffer and recovery
1482 * will then deadlock.
1483 */
1484 APPLESTATIC int
1485 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
1486 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1487 void *stuff, int called_from_strategy)
1488 {
1489 int error, expireret = 0, retrycnt, nostateid;
1490 u_int32_t clidrev = 0;
1491 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1492 struct nfsnode *np = VTONFS(vp);
1493 struct ucred *newcred;
1494 struct nfsfh *nfhp = NULL;
1495 nfsv4stateid_t stateid;
1496 void *lckp;
1497
1498 *must_commit = 0;
1499 if (nmp->nm_clp != NULL)
1500 clidrev = nmp->nm_clp->nfsc_clientidrev;
1501 newcred = cred;
1502 if (NFSHASNFSV4(nmp)) {
1503 newcred = NFSNEWCRED(cred);
1504 nfhp = np->n_fhp;
1505 }
1506 retrycnt = 0;
1507 do {
1508 lckp = NULL;
1509 nostateid = 0;
1510 if (NFSHASNFSV4(nmp)) {
1511 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1512 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid,
1513 &lckp);
1514 if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1515 stateid.other[2] == 0) {
1516 nostateid = 1;
1517 NFSCL_DEBUG(1, "stateid0 in write\n");
1518 }
1519 }
1520
1521 /*
1522 * If there is no stateid for NFSv4, it means this is an
1523 * extraneous write after close. Basically a poorly
1524 * implemented buffer cache. Just don't do the write.
1525 */
1526 if (nostateid)
1527 error = 0;
1528 else
1529 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
1530 newcred, &stateid, p, nap, attrflagp, stuff);
1531 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
1532 nfscl_initiate_recovery(nmp->nm_clp);
1533 if (lckp != NULL)
1534 nfscl_lockderef(lckp);
1535 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1536 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1537 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1538 (void) nfs_catnap(PZERO, error, "nfs_write");
1539 } else if ((error == NFSERR_EXPIRED ||
1540 error == NFSERR_BADSTATEID) && clidrev != 0) {
1541 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1542 }
1543 retrycnt++;
1544 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1545 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1546 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1547 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1548 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1549 expireret == 0 && clidrev != 0 && retrycnt < 4));
1550 if (error != 0 && (retrycnt >= 4 ||
1551 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1552 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1553 error = EIO;
1554 if (NFSHASNFSV4(nmp))
1555 NFSFREECRED(newcred);
1556 return (error);
1557 }
1558
1559 /*
1560 * The actual write RPC.
1561 */
1562 static int
1563 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1564 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
1565 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1566 {
1567 u_int32_t *tl;
1568 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1569 struct nfsnode *np = VTONFS(vp);
1570 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1571 int wccflag = 0, wsize;
1572 int32_t backup;
1573 struct nfsrv_descript nfsd;
1574 struct nfsrv_descript *nd = &nfsd;
1575 nfsattrbit_t attrbits;
1576 off_t tmp_off;
1577
1578 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1579 *attrflagp = 0;
1580 tsiz = uio_uio_resid(uiop);
1581 tmp_off = uiop->uio_offset + tsiz;
1582 NFSLOCKMNT(nmp);
1583 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1584 NFSUNLOCKMNT(nmp);
1585 return (EFBIG);
1586 }
1587 wsize = nmp->nm_wsize;
1588 NFSUNLOCKMNT(nmp);
1589 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */
1590 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */
1591 while (tsiz > 0) {
1592 *attrflagp = 0;
1593 len = (tsiz > wsize) ? wsize : tsiz;
1594 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1595 if (nd->nd_flag & ND_NFSV4) {
1596 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1597 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1598 txdr_hyper(uiop->uio_offset, tl);
1599 tl += 2;
1600 *tl++ = txdr_unsigned(*iomode);
1601 *tl = txdr_unsigned(len);
1602 } else if (nd->nd_flag & ND_NFSV3) {
1603 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1604 txdr_hyper(uiop->uio_offset, tl);
1605 tl += 2;
1606 *tl++ = txdr_unsigned(len);
1607 *tl++ = txdr_unsigned(*iomode);
1608 *tl = txdr_unsigned(len);
1609 } else {
1610 u_int32_t x;
1611
1612 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1613 /*
1614 * Not sure why someone changed this, since the
1615 * RFC clearly states that "beginoffset" and
1616 * "totalcount" are ignored, but it wouldn't
1617 * surprise me if there's a busted server out there.
1618 */
1619 /* Set both "begin" and "current" to non-garbage. */
1620 x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1621 *tl++ = x; /* "begin offset" */
1622 *tl++ = x; /* "current offset" */
1623 x = txdr_unsigned(len);
1624 *tl++ = x; /* total to this offset */
1625 *tl = x; /* size of this write */
1626
1627 }
1628 nfsm_uiombuf(nd, uiop, len);
1629 /*
1630 * Although it is tempting to do a normal Getattr Op in the
1631 * NFSv4 compound, the result can be a nearly hung client
1632 * system if the Getattr asks for Owner and/or OwnerGroup.
1633 * It occurs when the client can't map either the Owner or
1634 * Owner_group name in the Getattr reply to a uid/gid. When
1635 * there is a cache miss, the kernel does an upcall to the
1636 * nfsuserd. Then, it can try and read the local /etc/passwd
1637 * or /etc/group file. It can then block in getnewbuf(),
1638 * waiting for dirty writes to be pushed to the NFS server.
1639 * The only reason this doesn't result in a complete
1640 * deadlock, is that the upcall times out and allows
1641 * the write to complete. However, progress is so slow
1642 * that it might just as well be deadlocked.
1643 * As such, we get the rest of the attributes, but not
1644 * Owner or Owner_group.
1645 * nb: nfscl_loadattrcache() needs to be told that these
1646 * partial attributes from a write rpc are being
1647 * passed in, via a argument flag.
1648 */
1649 if (nd->nd_flag & ND_NFSV4) {
1650 NFSWRITEGETATTR_ATTRBIT(&attrbits);
1651 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1652 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1653 (void) nfsrv_putattrbit(nd, &attrbits);
1654 }
1655 error = nfscl_request(nd, vp, p, cred, stuff);
1656 if (error)
1657 return (error);
1658 if (nd->nd_repstat) {
1659 /*
1660 * In case the rpc gets retried, roll
1661 * the uio fileds changed by nfsm_uiombuf()
1662 * back.
1663 */
1664 uiop->uio_offset -= len;
1665 uio_uio_resid_add(uiop, len);
1666 uio_iov_base_add(uiop, -len);
1667 uio_iov_len_add(uiop, len);
1668 }
1669 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1670 error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1671 &wccflag, stuff);
1672 if (error)
1673 goto nfsmout;
1674 }
1675 if (!nd->nd_repstat) {
1676 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1677 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1678 + NFSX_VERF);
1679 rlen = fxdr_unsigned(int, *tl++);
1680 if (rlen == 0) {
1681 error = NFSERR_IO;
1682 goto nfsmout;
1683 } else if (rlen < len) {
1684 backup = len - rlen;
1685 uio_iov_base_add(uiop, -(backup));
1686 uio_iov_len_add(uiop, backup);
1687 uiop->uio_offset -= backup;
1688 uio_uio_resid_add(uiop, backup);
1689 len = rlen;
1690 }
1691 commit = fxdr_unsigned(int, *tl++);
1692
1693 /*
1694 * Return the lowest committment level
1695 * obtained by any of the RPCs.
1696 */
1697 if (committed == NFSWRITE_FILESYNC)
1698 committed = commit;
1699 else if (committed == NFSWRITE_DATASYNC &&
1700 commit == NFSWRITE_UNSTABLE)
1701 committed = commit;
1702 NFSLOCKMNT(nmp);
1703 if (!NFSHASWRITEVERF(nmp)) {
1704 NFSBCOPY((caddr_t)tl,
1705 (caddr_t)&nmp->nm_verf[0],
1706 NFSX_VERF);
1707 NFSSETWRITEVERF(nmp);
1708 } else if (NFSBCMP(tl, nmp->nm_verf,
1709 NFSX_VERF)) {
1710 *must_commit = 1;
1711 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
1712 }
1713 NFSUNLOCKMNT(nmp);
1714 }
1715 if (nd->nd_flag & ND_NFSV4)
1716 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1717 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1718 error = nfsm_loadattr(nd, nap);
1719 if (!error)
1720 *attrflagp = NFS_LATTR_NOSHRINK;
1721 }
1722 } else {
1723 error = nd->nd_repstat;
1724 }
1725 if (error)
1726 goto nfsmout;
1727 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4));
1728 mbuf_freem(nd->nd_mrep);
1729 nd->nd_mrep = NULL;
1730 tsiz -= len;
1731 }
1732 nfsmout:
1733 if (nd->nd_mrep != NULL)
1734 mbuf_freem(nd->nd_mrep);
1735 *iomode = committed;
1736 if (nd->nd_repstat && !error)
1737 error = nd->nd_repstat;
1738 return (error);
1739 }
1740
1741 /*
1742 * nfs mknod rpc
1743 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1744 * mode set to specify the file type and the size field for rdev.
1745 */
1746 APPLESTATIC int
1747 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1748 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1749 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1750 int *attrflagp, int *dattrflagp, void *dstuff)
1751 {
1752 u_int32_t *tl;
1753 int error = 0;
1754 struct nfsrv_descript nfsd, *nd = &nfsd;
1755 nfsattrbit_t attrbits;
1756
1757 *nfhpp = NULL;
1758 *attrflagp = 0;
1759 *dattrflagp = 0;
1760 if (namelen > NFS_MAXNAMLEN)
1761 return (ENAMETOOLONG);
1762 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1763 if (nd->nd_flag & ND_NFSV4) {
1764 if (vtyp == VBLK || vtyp == VCHR) {
1765 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1766 *tl++ = vtonfsv34_type(vtyp);
1767 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1768 *tl = txdr_unsigned(NFSMINOR(rdev));
1769 } else {
1770 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1771 *tl = vtonfsv34_type(vtyp);
1772 }
1773 }
1774 (void) nfsm_strtom(nd, name, namelen);
1775 if (nd->nd_flag & ND_NFSV3) {
1776 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1777 *tl = vtonfsv34_type(vtyp);
1778 }
1779 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1780 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1781 if ((nd->nd_flag & ND_NFSV3) &&
1782 (vtyp == VCHR || vtyp == VBLK)) {
1783 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1784 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1785 *tl = txdr_unsigned(NFSMINOR(rdev));
1786 }
1787 if (nd->nd_flag & ND_NFSV4) {
1788 NFSGETATTR_ATTRBIT(&attrbits);
1789 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1790 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1791 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1792 (void) nfsrv_putattrbit(nd, &attrbits);
1793 }
1794 if (nd->nd_flag & ND_NFSV2)
1795 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
1796 error = nfscl_request(nd, dvp, p, cred, dstuff);
1797 if (error)
1798 return (error);
1799 if (nd->nd_flag & ND_NFSV4)
1800 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1801 if (!nd->nd_repstat) {
1802 if (nd->nd_flag & ND_NFSV4) {
1803 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1804 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1805 if (error)
1806 goto nfsmout;
1807 }
1808 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1809 if (error)
1810 goto nfsmout;
1811 }
1812 if (nd->nd_flag & ND_NFSV3)
1813 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1814 if (!error && nd->nd_repstat)
1815 error = nd->nd_repstat;
1816 nfsmout:
1817 mbuf_freem(nd->nd_mrep);
1818 return (error);
1819 }
1820
1821 /*
1822 * nfs file create call
1823 * Mostly just call the approriate routine. (I separated out v4, so that
1824 * error recovery wouldn't be as difficult.)
1825 */
1826 APPLESTATIC int
1827 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1828 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1829 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1830 int *attrflagp, int *dattrflagp, void *dstuff)
1831 {
1832 int error = 0, newone, expireret = 0, retrycnt, unlocked;
1833 struct nfsclowner *owp;
1834 struct nfscldeleg *dp;
1835 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
1836 u_int32_t clidrev;
1837
1838 if (NFSHASNFSV4(nmp)) {
1839 retrycnt = 0;
1840 do {
1841 dp = NULL;
1842 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
1843 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
1844 NULL, 1);
1845 if (error)
1846 return (error);
1847 if (nmp->nm_clp != NULL)
1848 clidrev = nmp->nm_clp->nfsc_clientidrev;
1849 else
1850 clidrev = 0;
1851 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
1852 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1853 dstuff, &unlocked);
1854 /*
1855 * There is no need to invalidate cached attributes here,
1856 * since new post-delegation issue attributes are always
1857 * returned by nfsrpc_createv4() and these will update the
1858 * attribute cache.
1859 */
1860 if (dp != NULL)
1861 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
1862 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
1863 nfscl_ownerrelease(owp, error, newone, unlocked);
1864 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1865 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1866 error == NFSERR_BADSESSION) {
1867 (void) nfs_catnap(PZERO, error, "nfs_open");
1868 } else if ((error == NFSERR_EXPIRED ||
1869 error == NFSERR_BADSTATEID) && clidrev != 0) {
1870 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1871 retrycnt++;
1872 }
1873 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1874 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1875 error == NFSERR_BADSESSION ||
1876 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1877 expireret == 0 && clidrev != 0 && retrycnt < 4));
1878 if (error && retrycnt >= 4)
1879 error = EIO;
1880 } else {
1881 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
1882 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1883 dstuff);
1884 }
1885 return (error);
1886 }
1887
1888 /*
1889 * The create rpc for v2 and 3.
1890 */
1891 static int
1892 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1893 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1894 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1895 int *attrflagp, int *dattrflagp, void *dstuff)
1896 {
1897 u_int32_t *tl;
1898 int error = 0;
1899 struct nfsrv_descript nfsd, *nd = &nfsd;
1900
1901 *nfhpp = NULL;
1902 *attrflagp = 0;
1903 *dattrflagp = 0;
1904 if (namelen > NFS_MAXNAMLEN)
1905 return (ENAMETOOLONG);
1906 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1907 (void) nfsm_strtom(nd, name, namelen);
1908 if (nd->nd_flag & ND_NFSV3) {
1909 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1910 if (fmode & O_EXCL) {
1911 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1912 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1913 *tl++ = cverf.lval[0];
1914 *tl = cverf.lval[1];
1915 } else {
1916 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1917 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1918 }
1919 } else {
1920 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
1921 }
1922 error = nfscl_request(nd, dvp, p, cred, dstuff);
1923 if (error)
1924 return (error);
1925 if (nd->nd_repstat == 0) {
1926 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1927 if (error)
1928 goto nfsmout;
1929 }
1930 if (nd->nd_flag & ND_NFSV3)
1931 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1932 if (nd->nd_repstat != 0 && error == 0)
1933 error = nd->nd_repstat;
1934 nfsmout:
1935 mbuf_freem(nd->nd_mrep);
1936 return (error);
1937 }
1938
1939 static int
1940 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1941 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
1942 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
1943 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
1944 int *dattrflagp, void *dstuff, int *unlockedp)
1945 {
1946 u_int32_t *tl;
1947 int error = 0, deleg, newone, ret, acesize, limitby;
1948 struct nfsrv_descript nfsd, *nd = &nfsd;
1949 struct nfsclopen *op;
1950 struct nfscldeleg *dp = NULL;
1951 struct nfsnode *np;
1952 struct nfsfh *nfhp;
1953 nfsattrbit_t attrbits;
1954 nfsv4stateid_t stateid;
1955 u_int32_t rflags;
1956 struct nfsmount *nmp;
1957
1958 nmp = VFSTONFS(dvp->v_mount);
1959 np = VTONFS(dvp);
1960 *unlockedp = 0;
1961 *nfhpp = NULL;
1962 *dpp = NULL;
1963 *attrflagp = 0;
1964 *dattrflagp = 0;
1965 if (namelen > NFS_MAXNAMLEN)
1966 return (ENAMETOOLONG);
1967 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1968 /*
1969 * For V4, this is actually an Open op.
1970 */
1971 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1972 *tl++ = txdr_unsigned(owp->nfsow_seqid);
1973 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
1974 NFSV4OPEN_ACCESSREAD);
1975 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
1976 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
1977 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
1978 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
1979 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1980 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
1981 if (fmode & O_EXCL) {
1982 if (NFSHASNFSV4N(nmp)) {
1983 if (NFSHASSESSPERSIST(nmp)) {
1984 /* Use GUARDED for persistent sessions. */
1985 *tl = txdr_unsigned(NFSCREATE_GUARDED);
1986 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1987 } else {
1988 /* Otherwise, use EXCLUSIVE4_1. */
1989 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
1990 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1991 *tl++ = cverf.lval[0];
1992 *tl = cverf.lval[1];
1993 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1994 }
1995 } else {
1996 /* NFSv4.0 */
1997 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1998 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1999 *tl++ = cverf.lval[0];
2000 *tl = cverf.lval[1];
2001 }
2002 } else {
2003 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2004 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2005 }
2006 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2007 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
2008 (void) nfsm_strtom(nd, name, namelen);
2009 /* Get the new file's handle and attributes. */
2010 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2011 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2012 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2013 NFSGETATTR_ATTRBIT(&attrbits);
2014 (void) nfsrv_putattrbit(nd, &attrbits);
2015 /* Get the directory's post-op attributes. */
2016 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2017 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2018 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
2019 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2020 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2021 (void) nfsrv_putattrbit(nd, &attrbits);
2022 error = nfscl_request(nd, dvp, p, cred, dstuff);
2023 if (error)
2024 return (error);
2025 NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
2026 if (nd->nd_repstat == 0) {
2027 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2028 6 * NFSX_UNSIGNED);
2029 stateid.seqid = *tl++;
2030 stateid.other[0] = *tl++;
2031 stateid.other[1] = *tl++;
2032 stateid.other[2] = *tl;
2033 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
2034 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2035 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2036 deleg = fxdr_unsigned(int, *tl);
2037 if (deleg == NFSV4OPEN_DELEGATEREAD ||
2038 deleg == NFSV4OPEN_DELEGATEWRITE) {
2039 if (!(owp->nfsow_clp->nfsc_flags &
2040 NFSCLFLAGS_FIRSTDELEG))
2041 owp->nfsow_clp->nfsc_flags |=
2042 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
2043 MALLOC(dp, struct nfscldeleg *,
2044 sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
2045 M_NFSCLDELEG, M_WAITOK);
2046 LIST_INIT(&dp->nfsdl_owner);
2047 LIST_INIT(&dp->nfsdl_lock);
2048 dp->nfsdl_clp = owp->nfsow_clp;
2049 newnfs_copyincred(cred, &dp->nfsdl_cred);
2050 nfscl_lockinit(&dp->nfsdl_rwlock);
2051 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2052 NFSX_UNSIGNED);
2053 dp->nfsdl_stateid.seqid = *tl++;
2054 dp->nfsdl_stateid.other[0] = *tl++;
2055 dp->nfsdl_stateid.other[1] = *tl++;
2056 dp->nfsdl_stateid.other[2] = *tl++;
2057 ret = fxdr_unsigned(int, *tl);
2058 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
2059 dp->nfsdl_flags = NFSCLDL_WRITE;
2060 /*
2061 * Indicates how much the file can grow.
2062 */
2063 NFSM_DISSECT(tl, u_int32_t *,
2064 3 * NFSX_UNSIGNED);
2065 limitby = fxdr_unsigned(int, *tl++);
2066 switch (limitby) {
2067 case NFSV4OPEN_LIMITSIZE:
2068 dp->nfsdl_sizelimit = fxdr_hyper(tl);
2069 break;
2070 case NFSV4OPEN_LIMITBLOCKS:
2071 dp->nfsdl_sizelimit =
2072 fxdr_unsigned(u_int64_t, *tl++);
2073 dp->nfsdl_sizelimit *=
2074 fxdr_unsigned(u_int64_t, *tl);
2075 break;
2076 default:
2077 error = NFSERR_BADXDR;
2078 goto nfsmout;
2079 };
2080 } else {
2081 dp->nfsdl_flags = NFSCLDL_READ;
2082 }
2083 if (ret)
2084 dp->nfsdl_flags |= NFSCLDL_RECALL;
2085 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
2086 &acesize, p);
2087 if (error)
2088 goto nfsmout;
2089 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
2090 error = NFSERR_BADXDR;
2091 goto nfsmout;
2092 }
2093 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2094 if (error)
2095 goto nfsmout;
2096 /* Get rid of the PutFH and Getattr status values. */
2097 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2098 /* Load the directory attributes. */
2099 error = nfsm_loadattr(nd, dnap);
2100 if (error)
2101 goto nfsmout;
2102 *dattrflagp = 1;
2103 if (dp != NULL && *attrflagp) {
2104 dp->nfsdl_change = nnap->na_filerev;
2105 dp->nfsdl_modtime = nnap->na_mtime;
2106 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
2107 }
2108 /*
2109 * We can now complete the Open state.
2110 */
2111 nfhp = *nfhpp;
2112 if (dp != NULL) {
2113 dp->nfsdl_fhlen = nfhp->nfh_len;
2114 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
2115 }
2116 /*
2117 * Get an Open structure that will be
2118 * attached to the OpenOwner, acquired already.
2119 */
2120 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
2121 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
2122 cred, p, NULL, &op, &newone, NULL, 0);
2123 if (error)
2124 goto nfsmout;
2125 op->nfso_stateid = stateid;
2126 newnfs_copyincred(cred, &op->nfso_cred);
2127 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
2128 do {
2129 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
2130 nfhp->nfh_len, op, cred, p);
2131 if (ret == NFSERR_DELAY)
2132 (void) nfs_catnap(PZERO, ret, "nfs_create");
2133 } while (ret == NFSERR_DELAY);
2134 error = ret;
2135 }
2136
2137 /*
2138 * If the server is handing out delegations, but we didn't
2139 * get one because an OpenConfirm was required, try the
2140 * Open again, to get a delegation. This is a harmless no-op,
2141 * from a server's point of view.
2142 */
2143 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
2144 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
2145 !error && dp == NULL) {
2146 do {
2147 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp,
2148 np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
2149 nfhp->nfh_fh, nfhp->nfh_len,
2150 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
2151 name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
2152 if (ret == NFSERR_DELAY)
2153 (void) nfs_catnap(PZERO, ret, "nfs_crt2");
2154 } while (ret == NFSERR_DELAY);
2155 if (ret) {
2156 if (dp != NULL) {
2157 FREE((caddr_t)dp, M_NFSCLDELEG);
2158 dp = NULL;
2159 }
2160 if (ret == NFSERR_STALECLIENTID ||
2161 ret == NFSERR_STALEDONTRECOVER ||
2162 ret == NFSERR_BADSESSION)
2163 error = ret;
2164 }
2165 }
2166 nfscl_openrelease(op, error, newone);
2167 *unlockedp = 1;
2168 }
2169 if (nd->nd_repstat != 0 && error == 0)
2170 error = nd->nd_repstat;
2171 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
2172 nfscl_initiate_recovery(owp->nfsow_clp);
2173 nfsmout:
2174 if (!error)
2175 *dpp = dp;
2176 else if (dp != NULL)
2177 FREE((caddr_t)dp, M_NFSCLDELEG);
2178 mbuf_freem(nd->nd_mrep);
2179 return (error);
2180 }
2181
2182 /*
2183 * Nfs remove rpc
2184 */
2185 APPLESTATIC int
2186 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2187 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2188 void *dstuff)
2189 {
2190 u_int32_t *tl;
2191 struct nfsrv_descript nfsd, *nd = &nfsd;
2192 struct nfsnode *np;
2193 struct nfsmount *nmp;
2194 nfsv4stateid_t dstateid;
2195 int error, ret = 0, i;
2196
2197 *dattrflagp = 0;
2198 if (namelen > NFS_MAXNAMLEN)
2199 return (ENAMETOOLONG);
2200 nmp = VFSTONFS(vnode_mount(dvp));
2201 tryagain:
2202 if (NFSHASNFSV4(nmp) && ret == 0) {
2203 ret = nfscl_removedeleg(vp, p, &dstateid);
2204 if (ret == 1) {
2205 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2206 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2207 NFSX_UNSIGNED);
2208 if (NFSHASNFSV4N(nmp))
2209 *tl++ = 0;
2210 else
2211 *tl++ = dstateid.seqid;
2212 *tl++ = dstateid.other[0];
2213 *tl++ = dstateid.other[1];
2214 *tl++ = dstateid.other[2];
2215 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2216 np = VTONFS(dvp);
2217 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2218 np->n_fhp->nfh_len, 0);
2219 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2220 *tl = txdr_unsigned(NFSV4OP_REMOVE);
2221 }
2222 } else {
2223 ret = 0;
2224 }
2225 if (ret == 0)
2226 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2227 (void) nfsm_strtom(nd, name, namelen);
2228 error = nfscl_request(nd, dvp, p, cred, dstuff);
2229 if (error)
2230 return (error);
2231 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2232 /* For NFSv4, parse out any Delereturn replies. */
2233 if (ret > 0 && nd->nd_repstat != 0 &&
2234 (nd->nd_flag & ND_NOMOREDATA)) {
2235 /*
2236 * If the Delegreturn failed, try again without
2237 * it. The server will Recall, as required.
2238 */
2239 mbuf_freem(nd->nd_mrep);
2240 goto tryagain;
2241 }
2242 for (i = 0; i < (ret * 2); i++) {
2243 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2244 ND_NFSV4) {
2245 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2246 if (*(tl + 1))
2247 nd->nd_flag |= ND_NOMOREDATA;
2248 }
2249 }
2250 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2251 }
2252 if (nd->nd_repstat && !error)
2253 error = nd->nd_repstat;
2254 nfsmout:
2255 mbuf_freem(nd->nd_mrep);
2256 return (error);
2257 }
2258
2259 /*
2260 * Do an nfs rename rpc.
2261 */
2262 APPLESTATIC int
2263 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2264 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2265 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2266 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2267 {
2268 u_int32_t *tl;
2269 struct nfsrv_descript nfsd, *nd = &nfsd;
2270 struct nfsmount *nmp;
2271 struct nfsnode *np;
2272 nfsattrbit_t attrbits;
2273 nfsv4stateid_t fdstateid, tdstateid;
2274 int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2275
2276 *fattrflagp = 0;
2277 *tattrflagp = 0;
2278 nmp = VFSTONFS(vnode_mount(fdvp));
2279 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2280 return (ENAMETOOLONG);
2281 tryagain:
2282 if (NFSHASNFSV4(nmp) && ret == 0) {
2283 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2284 &tdstateid, &gottd, p);
2285 if (gotfd && gottd) {
2286 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2287 } else if (gotfd) {
2288 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2289 } else if (gottd) {
2290 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2291 }
2292 if (gotfd) {
2293 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2294 if (NFSHASNFSV4N(nmp))
2295 *tl++ = 0;
2296 else
2297 *tl++ = fdstateid.seqid;
2298 *tl++ = fdstateid.other[0];
2299 *tl++ = fdstateid.other[1];
2300 *tl = fdstateid.other[2];
2301 if (gottd) {
2302 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2303 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2304 np = VTONFS(tvp);
2305 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2306 np->n_fhp->nfh_len, 0);
2307 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2308 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2309 }
2310 }
2311 if (gottd) {
2312 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2313 if (NFSHASNFSV4N(nmp))
2314 *tl++ = 0;
2315 else
2316 *tl++ = tdstateid.seqid;
2317 *tl++ = tdstateid.other[0];
2318 *tl++ = tdstateid.other[1];
2319 *tl = tdstateid.other[2];
2320 }
2321 if (ret > 0) {
2322 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2323 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2324 np = VTONFS(fdvp);
2325 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2326 np->n_fhp->nfh_len, 0);
2327 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2328 *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2329 }
2330 } else {
2331 ret = 0;
2332 }
2333 if (ret == 0)
2334 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2335 if (nd->nd_flag & ND_NFSV4) {
2336 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2337 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2338 NFSWCCATTR_ATTRBIT(&attrbits);
2339 (void) nfsrv_putattrbit(nd, &attrbits);
2340 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2341 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2342 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2343 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2344 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2345 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2346 (void) nfsrv_putattrbit(nd, &attrbits);
2347 nd->nd_flag |= ND_V4WCCATTR;
2348 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2349 *tl = txdr_unsigned(NFSV4OP_RENAME);
2350 }
2351 (void) nfsm_strtom(nd, fnameptr, fnamelen);
2352 if (!(nd->nd_flag & ND_NFSV4))
2353 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2354 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2355 (void) nfsm_strtom(nd, tnameptr, tnamelen);
2356 error = nfscl_request(nd, fdvp, p, cred, fstuff);
2357 if (error)
2358 return (error);
2359 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2360 /* For NFSv4, parse out any Delereturn replies. */
2361 if (ret > 0 && nd->nd_repstat != 0 &&
2362 (nd->nd_flag & ND_NOMOREDATA)) {
2363 /*
2364 * If the Delegreturn failed, try again without
2365 * it. The server will Recall, as required.
2366 */
2367 mbuf_freem(nd->nd_mrep);
2368 goto tryagain;
2369 }
2370 for (i = 0; i < (ret * 2); i++) {
2371 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2372 ND_NFSV4) {
2373 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2374 if (*(tl + 1)) {
2375 if (i == 0 && ret > 1) {
2376 /*
2377 * If the Delegreturn failed, try again
2378 * without it. The server will Recall, as
2379 * required.
2380 * If ret > 1, the first iteration of this
2381 * loop is the second DelegReturn result.
2382 */
2383 mbuf_freem(nd->nd_mrep);
2384 goto tryagain;
2385 } else {
2386 nd->nd_flag |= ND_NOMOREDATA;
2387 }
2388 }
2389 }
2390 }
2391 /* Now, the first wcc attribute reply. */
2392 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2393 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2394 if (*(tl + 1))
2395 nd->nd_flag |= ND_NOMOREDATA;
2396 }
2397 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2398 fstuff);
2399 /* and the second wcc attribute reply. */
2400 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2401 !error) {
2402 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2403 if (*(tl + 1))
2404 nd->nd_flag |= ND_NOMOREDATA;
2405 }
2406 if (!error)
2407 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2408 NULL, tstuff);
2409 }
2410 if (nd->nd_repstat && !error)
2411 error = nd->nd_repstat;
2412 nfsmout:
2413 mbuf_freem(nd->nd_mrep);
2414 return (error);
2415 }
2416
2417 /*
2418 * nfs hard link create rpc
2419 */
2420 APPLESTATIC int
2421 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2422 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2423 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2424 {
2425 u_int32_t *tl;
2426 struct nfsrv_descript nfsd, *nd = &nfsd;
2427 nfsattrbit_t attrbits;
2428 int error = 0;
2429
2430 *attrflagp = 0;
2431 *dattrflagp = 0;
2432 if (namelen > NFS_MAXNAMLEN)
2433 return (ENAMETOOLONG);
2434 NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2435 if (nd->nd_flag & ND_NFSV4) {
2436 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2437 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2438 }
2439 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2440 VTONFS(dvp)->n_fhp->nfh_len, 0);
2441 if (nd->nd_flag & ND_NFSV4) {
2442 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2443 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2444 NFSWCCATTR_ATTRBIT(&attrbits);
2445 (void) nfsrv_putattrbit(nd, &attrbits);
2446 nd->nd_flag |= ND_V4WCCATTR;
2447 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2448 *tl = txdr_unsigned(NFSV4OP_LINK);
2449 }
2450 (void) nfsm_strtom(nd, name, namelen);
2451 error = nfscl_request(nd, vp, p, cred, dstuff);
2452 if (error)
2453 return (error);
2454 if (nd->nd_flag & ND_NFSV3) {
2455 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2456 if (!error)
2457 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2458 NULL, dstuff);
2459 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2460 /*
2461 * First, parse out the PutFH and Getattr result.
2462 */
2463 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2464 if (!(*(tl + 1)))
2465 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2466 if (*(tl + 1))
2467 nd->nd_flag |= ND_NOMOREDATA;
2468 /*
2469 * Get the pre-op attributes.
2470 */
2471 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2472 }
2473 if (nd->nd_repstat && !error)
2474 error = nd->nd_repstat;
2475 nfsmout:
2476 mbuf_freem(nd->nd_mrep);
2477 return (error);
2478 }
2479
2480 /*
2481 * nfs symbolic link create rpc
2482 */
2483 APPLESTATIC int
2484 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target,
2485 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2486 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2487 int *dattrflagp, void *dstuff)
2488 {
2489 u_int32_t *tl;
2490 struct nfsrv_descript nfsd, *nd = &nfsd;
2491 struct nfsmount *nmp;
2492 int slen, error = 0;
2493
2494 *nfhpp = NULL;
2495 *attrflagp = 0;
2496 *dattrflagp = 0;
2497 nmp = VFSTONFS(vnode_mount(dvp));
2498 slen = strlen(target);
2499 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2500 return (ENAMETOOLONG);
2501 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2502 if (nd->nd_flag & ND_NFSV4) {
2503 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2504 *tl = txdr_unsigned(NFLNK);
2505 (void) nfsm_strtom(nd, target, slen);
2506 }
2507 (void) nfsm_strtom(nd, name, namelen);
2508 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2509 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2510 if (!(nd->nd_flag & ND_NFSV4))
2511 (void) nfsm_strtom(nd, target, slen);
2512 if (nd->nd_flag & ND_NFSV2)
2513 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2514 error = nfscl_request(nd, dvp, p, cred, dstuff);
2515 if (error)
2516 return (error);
2517 if (nd->nd_flag & ND_NFSV4)
2518 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2519 if ((nd->nd_flag & ND_NFSV3) && !error) {
2520 if (!nd->nd_repstat)
2521 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2522 if (!error)
2523 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2524 NULL, dstuff);
2525 }
2526 if (nd->nd_repstat && !error)
2527 error = nd->nd_repstat;
2528 mbuf_freem(nd->nd_mrep);
2529 /*
2530 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2531 */
2532 if (error == EEXIST)
2533 error = 0;
2534 return (error);
2535 }
2536
2537 /*
2538 * nfs make dir rpc
2539 */
2540 APPLESTATIC int
2541 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2542 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2543 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2544 int *dattrflagp, void *dstuff)
2545 {
2546 u_int32_t *tl;
2547 struct nfsrv_descript nfsd, *nd = &nfsd;
2548 nfsattrbit_t attrbits;
2549 int error = 0;
2550 struct nfsfh *fhp;
2551
2552 *nfhpp = NULL;
2553 *attrflagp = 0;
2554 *dattrflagp = 0;
2555 fhp = VTONFS(dvp)->n_fhp;
2556 if (namelen > NFS_MAXNAMLEN)
2557 return (ENAMETOOLONG);
2558 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2559 if (nd->nd_flag & ND_NFSV4) {
2560 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2561 *tl = txdr_unsigned(NFDIR);
2562 }
2563 (void) nfsm_strtom(nd, name, namelen);
2564 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2565 if (nd->nd_flag & ND_NFSV4) {
2566 NFSGETATTR_ATTRBIT(&attrbits);
2567 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2568 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2569 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2570 (void) nfsrv_putattrbit(nd, &attrbits);
2571 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2572 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2573 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0);
2574 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2575 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2576 (void) nfsrv_putattrbit(nd, &attrbits);
2577 }
2578 error = nfscl_request(nd, dvp, p, cred, dstuff);
2579 if (error)
2580 return (error);
2581 if (nd->nd_flag & ND_NFSV4)
2582 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2583 if (!nd->nd_repstat && !error) {
2584 if (nd->nd_flag & ND_NFSV4) {
2585 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2586 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2587 }
2588 if (!error)
2589 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2590 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) {
2591 /* Get rid of the PutFH and Getattr status values. */
2592 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2593 /* Load the directory attributes. */
2594 error = nfsm_loadattr(nd, dnap);
2595 if (error == 0)
2596 *dattrflagp = 1;
2597 }
2598 }
2599 if ((nd->nd_flag & ND_NFSV3) && !error)
2600 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2601 if (nd->nd_repstat && !error)
2602 error = nd->nd_repstat;
2603 nfsmout:
2604 mbuf_freem(nd->nd_mrep);
2605 /*
2606 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry.
2607 */
2608 if (error == EEXIST)
2609 error = 0;
2610 return (error);
2611 }
2612
2613 /*
2614 * nfs remove directory call
2615 */
2616 APPLESTATIC int
2617 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2618 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2619 {
2620 struct nfsrv_descript nfsd, *nd = &nfsd;
2621 int error = 0;
2622
2623 *dattrflagp = 0;
2624 if (namelen > NFS_MAXNAMLEN)
2625 return (ENAMETOOLONG);
2626 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2627 (void) nfsm_strtom(nd, name, namelen);
2628 error = nfscl_request(nd, dvp, p, cred, dstuff);
2629 if (error)
2630 return (error);
2631 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2632 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2633 if (nd->nd_repstat && !error)
2634 error = nd->nd_repstat;
2635 mbuf_freem(nd->nd_mrep);
2636 /*
2637 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2638 */
2639 if (error == ENOENT)
2640 error = 0;
2641 return (error);
2642 }
2643
2644 /*
2645 * Readdir rpc.
2646 * Always returns with either uio_resid unchanged, if you are at the
2647 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2648 * filled in.
2649 * I felt this would allow caching of directory blocks more easily
2650 * than returning a pertially filled block.
2651 * Directory offset cookies:
2652 * Oh my, what to do with them...
2653 * I can think of three ways to deal with them:
2654 * 1 - have the layer above these RPCs maintain a map between logical
2655 * directory byte offsets and the NFS directory offset cookies
2656 * 2 - pass the opaque directory offset cookies up into userland
2657 * and let the libc functions deal with them, via the system call
2658 * 3 - return them to userland in the "struct dirent", so future versions
2659 * of libc can use them and do whatever is necessary to amke things work
2660 * above these rpc calls, in the meantime
2661 * For now, I do #3 by "hiding" the directory offset cookies after the
2662 * d_name field in struct dirent. This is space inside d_reclen that
2663 * will be ignored by anything that doesn't know about them.
2664 * The directory offset cookies are filled in as the last 8 bytes of
2665 * each directory entry, after d_name. Someday, the userland libc
2666 * functions may be able to use these. In the meantime, it satisfies
2667 * OpenBSD's requirements for cookies being returned.
2668 * If expects the directory offset cookie for the read to be in uio_offset
2669 * and returns the one for the next entry after this directory block in
2670 * there, as well.
2671 */
2672 APPLESTATIC int
2673 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2674 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2675 int *eofp, void *stuff)
2676 {
2677 int len, left;
2678 struct dirent *dp = NULL;
2679 u_int32_t *tl;
2680 nfsquad_t cookie, ncookie;
2681 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2682 struct nfsnode *dnp = VTONFS(vp);
2683 struct nfsvattr nfsva;
2684 struct nfsrv_descript nfsd, *nd = &nfsd;
2685 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2686 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2687 long dotfileid, dotdotfileid = 0;
2688 u_int32_t fakefileno = 0xffffffff, rderr;
2689 char *cp;
2690 nfsattrbit_t attrbits, dattrbits;
2691 u_int32_t *tl2 = NULL;
2692 size_t tresid;
2693
2694 KASSERT(uiop->uio_iovcnt == 1 &&
2695 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2696 ("nfs readdirrpc bad uio"));
2697
2698 /*
2699 * There is no point in reading a lot more than uio_resid, however
2700 * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2701 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2702 * will never make readsize > nm_readdirsize.
2703 */
2704 readsize = nmp->nm_readdirsize;
2705 if (readsize > uio_uio_resid(uiop))
2706 readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
2707
2708 *attrflagp = 0;
2709 if (eofp)
2710 *eofp = 0;
2711 tresid = uio_uio_resid(uiop);
2712 cookie.lval[0] = cookiep->nfsuquad[0];
2713 cookie.lval[1] = cookiep->nfsuquad[1];
2714 nd->nd_mrep = NULL;
2715
2716 /*
2717 * For NFSv4, first create the "." and ".." entries.
2718 */
2719 if (NFSHASNFSV4(nmp)) {
2720 reqsize = 6 * NFSX_UNSIGNED;
2721 NFSGETATTR_ATTRBIT(&dattrbits);
2722 NFSZERO_ATTRBIT(&attrbits);
2723 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2724 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2725 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2726 NFSATTRBIT_MOUNTEDONFILEID)) {
2727 NFSSETBIT_ATTRBIT(&attrbits,
2728 NFSATTRBIT_MOUNTEDONFILEID);
2729 gotmnton = 1;
2730 } else {
2731 /*
2732 * Must fake it. Use the fileno, except when the
2733 * fsid is != to that of the directory. For that
2734 * case, generate a fake fileno that is not the same.
2735 */
2736 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2737 gotmnton = 0;
2738 }
2739
2740 /*
2741 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2742 */
2743 if (uiop->uio_offset == 0) {
2744 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2745 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2746 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2747 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2748 (void) nfsrv_putattrbit(nd, &attrbits);
2749 error = nfscl_request(nd, vp, p, cred, stuff);
2750 if (error)
2751 return (error);
2752 dotfileid = 0; /* Fake out the compiler. */
2753 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
2754 error = nfsm_loadattr(nd, &nfsva);
2755 if (error != 0)
2756 goto nfsmout;
2757 dotfileid = nfsva.na_fileid;
2758 }
2759 if (nd->nd_repstat == 0) {
2760 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2761 len = fxdr_unsigned(int, *(tl + 4));
2762 if (len > 0 && len <= NFSX_V4FHMAX)
2763 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2764 else
2765 error = EPERM;
2766 if (!error) {
2767 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2768 nfsva.na_mntonfileno = 0xffffffff;
2769 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2770 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2771 NULL, NULL, NULL, p, cred);
2772 if (error) {
2773 dotdotfileid = dotfileid;
2774 } else if (gotmnton) {
2775 if (nfsva.na_mntonfileno != 0xffffffff)
2776 dotdotfileid = nfsva.na_mntonfileno;
2777 else
2778 dotdotfileid = nfsva.na_fileid;
2779 } else if (nfsva.na_filesid[0] ==
2780 dnp->n_vattr.na_filesid[0] &&
2781 nfsva.na_filesid[1] ==
2782 dnp->n_vattr.na_filesid[1]) {
2783 dotdotfileid = nfsva.na_fileid;
2784 } else {
2785 do {
2786 fakefileno--;
2787 } while (fakefileno ==
2788 nfsva.na_fileid);
2789 dotdotfileid = fakefileno;
2790 }
2791 }
2792 } else if (nd->nd_repstat == NFSERR_NOENT) {
2793 /*
2794 * Lookupp returns NFSERR_NOENT when we are
2795 * at the root, so just use the current dir.
2796 */
2797 nd->nd_repstat = 0;
2798 dotdotfileid = dotfileid;
2799 } else {
2800 error = nd->nd_repstat;
2801 }
2802 mbuf_freem(nd->nd_mrep);
2803 if (error)
2804 return (error);
2805 nd->nd_mrep = NULL;
2806 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2807 dp->d_type = DT_DIR;
2808 dp->d_fileno = dotfileid;
2809 dp->d_namlen = 1;
2810 dp->d_name[0] = '.';
2811 dp->d_name[1] = '\0';
2812 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2813 /*
2814 * Just make these offset cookie 0.
2815 */
2816 tl = (u_int32_t *)&dp->d_name[4];
2817 *tl++ = 0;
2818 *tl = 0;
2819 blksiz += dp->d_reclen;
2820 uio_uio_resid_add(uiop, -(dp->d_reclen));
2821 uiop->uio_offset += dp->d_reclen;
2822 uio_iov_base_add(uiop, dp->d_reclen);
2823 uio_iov_len_add(uiop, -(dp->d_reclen));
2824 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2825 dp->d_type = DT_DIR;
2826 dp->d_fileno = dotdotfileid;
2827 dp->d_namlen = 2;
2828 dp->d_name[0] = '.';
2829 dp->d_name[1] = '.';
2830 dp->d_name[2] = '\0';
2831 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2832 /*
2833 * Just make these offset cookie 0.
2834 */
2835 tl = (u_int32_t *)&dp->d_name[4];
2836 *tl++ = 0;
2837 *tl = 0;
2838 blksiz += dp->d_reclen;
2839 uio_uio_resid_add(uiop, -(dp->d_reclen));
2840 uiop->uio_offset += dp->d_reclen;
2841 uio_iov_base_add(uiop, dp->d_reclen);
2842 uio_iov_len_add(uiop, -(dp->d_reclen));
2843 }
2844 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
2845 } else {
2846 reqsize = 5 * NFSX_UNSIGNED;
2847 }
2848
2849
2850 /*
2851 * Loop around doing readdir rpc's of size readsize.
2852 * The stopping criteria is EOF or buffer full.
2853 */
2854 while (more_dirs && bigenough) {
2855 *attrflagp = 0;
2856 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
2857 if (nd->nd_flag & ND_NFSV2) {
2858 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2859 *tl++ = cookie.lval[1];
2860 *tl = txdr_unsigned(readsize);
2861 } else {
2862 NFSM_BUILD(tl, u_int32_t *, reqsize);
2863 *tl++ = cookie.lval[0];
2864 *tl++ = cookie.lval[1];
2865 if (cookie.qval == 0) {
2866 *tl++ = 0;
2867 *tl++ = 0;
2868 } else {
2869 NFSLOCKNODE(dnp);
2870 *tl++ = dnp->n_cookieverf.nfsuquad[0];
2871 *tl++ = dnp->n_cookieverf.nfsuquad[1];
2872 NFSUNLOCKNODE(dnp);
2873 }
2874 if (nd->nd_flag & ND_NFSV4) {
2875 *tl++ = txdr_unsigned(readsize);
2876 *tl = txdr_unsigned(readsize);
2877 (void) nfsrv_putattrbit(nd, &attrbits);
2878 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2879 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2880 (void) nfsrv_putattrbit(nd, &dattrbits);
2881 } else {
2882 *tl = txdr_unsigned(readsize);
2883 }
2884 }
2885 error = nfscl_request(nd, vp, p, cred, stuff);
2886 if (error)
2887 return (error);
2888 if (!(nd->nd_flag & ND_NFSV2)) {
2889 if (nd->nd_flag & ND_NFSV3)
2890 error = nfscl_postop_attr(nd, nap, attrflagp,
2891 stuff);
2892 if (!nd->nd_repstat && !error) {
2893 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2894 NFSLOCKNODE(dnp);
2895 dnp->n_cookieverf.nfsuquad[0] = *tl++;
2896 dnp->n_cookieverf.nfsuquad[1] = *tl;
2897 NFSUNLOCKNODE(dnp);
2898 }
2899 }
2900 if (nd->nd_repstat || error) {
2901 if (!error)
2902 error = nd->nd_repstat;
2903 goto nfsmout;
2904 }
2905 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2906 more_dirs = fxdr_unsigned(int, *tl);
2907 if (!more_dirs)
2908 tryformoredirs = 0;
2909
2910 /* loop thru the dir entries, doctoring them to 4bsd form */
2911 while (more_dirs && bigenough) {
2912 if (nd->nd_flag & ND_NFSV4) {
2913 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2914 ncookie.lval[0] = *tl++;
2915 ncookie.lval[1] = *tl++;
2916 len = fxdr_unsigned(int, *tl);
2917 } else if (nd->nd_flag & ND_NFSV3) {
2918 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2919 nfsva.na_fileid = fxdr_hyper(tl);
2920 tl += 2;
2921 len = fxdr_unsigned(int, *tl);
2922 } else {
2923 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2924 nfsva.na_fileid =
2925 fxdr_unsigned(long, *tl++);
2926 len = fxdr_unsigned(int, *tl);
2927 }
2928 if (len <= 0 || len > NFS_MAXNAMLEN) {
2929 error = EBADRPC;
2930 goto nfsmout;
2931 }
2932 tlen = NFSM_RNDUP(len);
2933 if (tlen == len)
2934 tlen += 4; /* To ensure null termination */
2935 left = DIRBLKSIZ - blksiz;
2936 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) {
2937 dp->d_reclen += left;
2938 uio_iov_base_add(uiop, left);
2939 uio_iov_len_add(uiop, -(left));
2940 uio_uio_resid_add(uiop, -(left));
2941 uiop->uio_offset += left;
2942 blksiz = 0;
2943 }
2944 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
2945 bigenough = 0;
2946 if (bigenough) {
2947 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2948 dp->d_namlen = len;
2949 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
2950 dp->d_type = DT_UNKNOWN;
2951 blksiz += dp->d_reclen;
2952 if (blksiz == DIRBLKSIZ)
2953 blksiz = 0;
2954 uio_uio_resid_add(uiop, -(DIRHDSIZ));
2955 uiop->uio_offset += DIRHDSIZ;
2956 uio_iov_base_add(uiop, DIRHDSIZ);
2957 uio_iov_len_add(uiop, -(DIRHDSIZ));
2958 error = nfsm_mbufuio(nd, uiop, len);
2959 if (error)
2960 goto nfsmout;
2961 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
2962 tlen -= len;
2963 *cp = '\0'; /* null terminate */
2964 cp += tlen; /* points to cookie storage */
2965 tl2 = (u_int32_t *)cp;
2966 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
2967 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
2968 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
2969 uiop->uio_offset += (tlen + NFSX_HYPER);
2970 } else {
2971 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2972 if (error)
2973 goto nfsmout;
2974 }
2975 if (nd->nd_flag & ND_NFSV4) {
2976 rderr = 0;
2977 nfsva.na_mntonfileno = 0xffffffff;
2978 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2979 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2980 NULL, NULL, &rderr, p, cred);
2981 if (error)
2982 goto nfsmout;
2983 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2984 } else if (nd->nd_flag & ND_NFSV3) {
2985 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2986 ncookie.lval[0] = *tl++;
2987 ncookie.lval[1] = *tl++;
2988 } else {
2989 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2990 ncookie.lval[0] = 0;
2991 ncookie.lval[1] = *tl++;
2992 }
2993 if (bigenough) {
2994 if (nd->nd_flag & ND_NFSV4) {
2995 if (rderr) {
2996 dp->d_fileno = 0;
2997 } else {
2998 if (gotmnton) {
2999 if (nfsva.na_mntonfileno != 0xffffffff)
3000 dp->d_fileno = nfsva.na_mntonfileno;
3001 else
3002 dp->d_fileno = nfsva.na_fileid;
3003 } else if (nfsva.na_filesid[0] ==
3004 dnp->n_vattr.na_filesid[0] &&
3005 nfsva.na_filesid[1] ==
3006 dnp->n_vattr.na_filesid[1]) {
3007 dp->d_fileno = nfsva.na_fileid;
3008 } else {
3009 do {
3010 fakefileno--;
3011 } while (fakefileno ==
3012 nfsva.na_fileid);
3013 dp->d_fileno = fakefileno;
3014 }
3015 dp->d_type = vtonfs_dtype(nfsva.na_type);
3016 }
3017 } else {
3018 dp->d_fileno = nfsva.na_fileid;
3019 }
3020 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3021 ncookie.lval[0];
3022 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3023 ncookie.lval[1];
3024 }
3025 more_dirs = fxdr_unsigned(int, *tl);
3026 }
3027 /*
3028 * If at end of rpc data, get the eof boolean
3029 */
3030 if (!more_dirs) {
3031 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3032 eof = fxdr_unsigned(int, *tl);
3033 if (tryformoredirs)
3034 more_dirs = !eof;
3035 if (nd->nd_flag & ND_NFSV4) {
3036 error = nfscl_postop_attr(nd, nap, attrflagp,
3037 stuff);
3038 if (error)
3039 goto nfsmout;
3040 }
3041 }
3042 mbuf_freem(nd->nd_mrep);
3043 nd->nd_mrep = NULL;
3044 }
3045 /*
3046 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3047 * by increasing d_reclen for the last record.
3048 */
3049 if (blksiz > 0) {
3050 left = DIRBLKSIZ - blksiz;
3051 dp->d_reclen += left;
3052 uio_iov_base_add(uiop, left);
3053 uio_iov_len_add(uiop, -(left));
3054 uio_uio_resid_add(uiop, -(left));
3055 uiop->uio_offset += left;
3056 }
3057
3058 /*
3059 * If returning no data, assume end of file.
3060 * If not bigenough, return not end of file, since you aren't
3061 * returning all the data
3062 * Otherwise, return the eof flag from the server.
3063 */
3064 if (eofp) {
3065 if (tresid == ((size_t)(uio_uio_resid(uiop))))
3066 *eofp = 1;
3067 else if (!bigenough)
3068 *eofp = 0;
3069 else
3070 *eofp = eof;
3071 }
3072
3073 nfsmout:
3074 if (nd->nd_mrep != NULL)
3075 mbuf_freem(nd->nd_mrep);
3076 return (error);
3077 }
3078
3079 #ifndef APPLE
3080 /*
3081 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
3082 * (Also used for NFS V4 when mount flag set.)
3083 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
3084 */
3085 APPLESTATIC int
3086 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
3087 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3088 int *eofp, void *stuff)
3089 {
3090 int len, left;
3091 struct dirent *dp = NULL;
3092 u_int32_t *tl;
3093 vnode_t newvp = NULLVP;
3094 struct nfsrv_descript nfsd, *nd = &nfsd;
3095 struct nameidata nami, *ndp = &nami;
3096 struct componentname *cnp = &ndp->ni_cnd;
3097 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3098 struct nfsnode *dnp = VTONFS(vp), *np;
3099 struct nfsvattr nfsva;
3100 struct nfsfh *nfhp;
3101 nfsquad_t cookie, ncookie;
3102 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
3103 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
3104 int isdotdot = 0, unlocknewvp = 0;
3105 long dotfileid, dotdotfileid = 0, fileno = 0;
3106 char *cp;
3107 nfsattrbit_t attrbits, dattrbits;
3108 size_t tresid;
3109 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
3110 struct timespec dctime;
3111
3112 KASSERT(uiop->uio_iovcnt == 1 &&
3113 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
3114 ("nfs readdirplusrpc bad uio"));
3115 timespecclear(&dctime);
3116 *attrflagp = 0;
3117 if (eofp != NULL)
3118 *eofp = 0;
3119 ndp->ni_dvp = vp;
3120 nd->nd_mrep = NULL;
3121 cookie.lval[0] = cookiep->nfsuquad[0];
3122 cookie.lval[1] = cookiep->nfsuquad[1];
3123 tresid = uio_uio_resid(uiop);
3124
3125 /*
3126 * For NFSv4, first create the "." and ".." entries.
3127 */
3128 if (NFSHASNFSV4(nmp)) {
3129 NFSGETATTR_ATTRBIT(&dattrbits);
3130 NFSZERO_ATTRBIT(&attrbits);
3131 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
3132 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
3133 NFSATTRBIT_MOUNTEDONFILEID)) {
3134 NFSSETBIT_ATTRBIT(&attrbits,
3135 NFSATTRBIT_MOUNTEDONFILEID);
3136 gotmnton = 1;
3137 } else {
3138 /*
3139 * Must fake it. Use the fileno, except when the
3140 * fsid is != to that of the directory. For that
3141 * case, generate a fake fileno that is not the same.
3142 */
3143 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
3144 gotmnton = 0;
3145 }
3146
3147 /*
3148 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
3149 */
3150 if (uiop->uio_offset == 0) {
3151 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
3152 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3153 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
3154 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3155 (void) nfsrv_putattrbit(nd, &attrbits);
3156 error = nfscl_request(nd, vp, p, cred, stuff);
3157 if (error)
3158 return (error);
3159 dotfileid = 0; /* Fake out the compiler. */
3160 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
3161 error = nfsm_loadattr(nd, &nfsva);
3162 if (error != 0)
3163 goto nfsmout;
3164 dctime = nfsva.na_ctime;
3165 dotfileid = nfsva.na_fileid;
3166 }
3167 if (nd->nd_repstat == 0) {
3168 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
3169 len = fxdr_unsigned(int, *(tl + 4));
3170 if (len > 0 && len <= NFSX_V4FHMAX)
3171 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3172 else
3173 error = EPERM;
3174 if (!error) {
3175 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3176 nfsva.na_mntonfileno = 0xffffffff;
3177 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3178 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3179 NULL, NULL, NULL, p, cred);
3180 if (error) {
3181 dotdotfileid = dotfileid;
3182 } else if (gotmnton) {
3183 if (nfsva.na_mntonfileno != 0xffffffff)
3184 dotdotfileid = nfsva.na_mntonfileno;
3185 else
3186 dotdotfileid = nfsva.na_fileid;
3187 } else if (nfsva.na_filesid[0] ==
3188 dnp->n_vattr.na_filesid[0] &&
3189 nfsva.na_filesid[1] ==
3190 dnp->n_vattr.na_filesid[1]) {
3191 dotdotfileid = nfsva.na_fileid;
3192 } else {
3193 do {
3194 fakefileno--;
3195 } while (fakefileno ==
3196 nfsva.na_fileid);
3197 dotdotfileid = fakefileno;
3198 }
3199 }
3200 } else if (nd->nd_repstat == NFSERR_NOENT) {
3201 /*
3202 * Lookupp returns NFSERR_NOENT when we are
3203 * at the root, so just use the current dir.
3204 */
3205 nd->nd_repstat = 0;
3206 dotdotfileid = dotfileid;
3207 } else {
3208 error = nd->nd_repstat;
3209 }
3210 mbuf_freem(nd->nd_mrep);
3211 if (error)
3212 return (error);
3213 nd->nd_mrep = NULL;
3214 dp = (struct dirent *)uio_iov_base(uiop);
3215 dp->d_type = DT_DIR;
3216 dp->d_fileno = dotfileid;
3217 dp->d_namlen = 1;
3218 dp->d_name[0] = '.';
3219 dp->d_name[1] = '\0';
3220 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3221 /*
3222 * Just make these offset cookie 0.
3223 */
3224 tl = (u_int32_t *)&dp->d_name[4];
3225 *tl++ = 0;
3226 *tl = 0;
3227 blksiz += dp->d_reclen;
3228 uio_uio_resid_add(uiop, -(dp->d_reclen));
3229 uiop->uio_offset += dp->d_reclen;
3230 uio_iov_base_add(uiop, dp->d_reclen);
3231 uio_iov_len_add(uiop, -(dp->d_reclen));
3232 dp = (struct dirent *)uio_iov_base(uiop);
3233 dp->d_type = DT_DIR;
3234 dp->d_fileno = dotdotfileid;
3235 dp->d_namlen = 2;
3236 dp->d_name[0] = '.';
3237 dp->d_name[1] = '.';
3238 dp->d_name[2] = '\0';
3239 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3240 /*
3241 * Just make these offset cookie 0.
3242 */
3243 tl = (u_int32_t *)&dp->d_name[4];
3244 *tl++ = 0;
3245 *tl = 0;
3246 blksiz += dp->d_reclen;
3247 uio_uio_resid_add(uiop, -(dp->d_reclen));
3248 uiop->uio_offset += dp->d_reclen;
3249 uio_iov_base_add(uiop, dp->d_reclen);
3250 uio_iov_len_add(uiop, -(dp->d_reclen));
3251 }
3252 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3253 if (gotmnton)
3254 NFSSETBIT_ATTRBIT(&attrbits,
3255 NFSATTRBIT_MOUNTEDONFILEID);
3256 }
3257
3258 /*
3259 * Loop around doing readdir rpc's of size nm_readdirsize.
3260 * The stopping criteria is EOF or buffer full.
3261 */
3262 while (more_dirs && bigenough) {
3263 *attrflagp = 0;
3264 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3265 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3266 *tl++ = cookie.lval[0];
3267 *tl++ = cookie.lval[1];
3268 if (cookie.qval == 0) {
3269 *tl++ = 0;
3270 *tl++ = 0;
3271 } else {
3272 NFSLOCKNODE(dnp);
3273 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3274 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3275 NFSUNLOCKNODE(dnp);
3276 }
3277 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3278 *tl = txdr_unsigned(nmp->nm_readdirsize);
3279 if (nd->nd_flag & ND_NFSV4) {
3280 (void) nfsrv_putattrbit(nd, &attrbits);
3281 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3282 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3283 (void) nfsrv_putattrbit(nd, &dattrbits);
3284 }
3285 error = nfscl_request(nd, vp, p, cred, stuff);
3286 if (error)
3287 return (error);
3288 if (nd->nd_flag & ND_NFSV3)
3289 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3290 if (nd->nd_repstat || error) {
3291 if (!error)
3292 error = nd->nd_repstat;
3293 goto nfsmout;
3294 }
3295 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
3296 dctime = nap->na_ctime;
3297 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3298 NFSLOCKNODE(dnp);
3299 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3300 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3301 NFSUNLOCKNODE(dnp);
3302 more_dirs = fxdr_unsigned(int, *tl);
3303 if (!more_dirs)
3304 tryformoredirs = 0;
3305
3306 /* loop thru the dir entries, doctoring them to 4bsd form */
3307 while (more_dirs && bigenough) {
3308 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3309 if (nd->nd_flag & ND_NFSV4) {
3310 ncookie.lval[0] = *tl++;
3311 ncookie.lval[1] = *tl++;
3312 } else {
3313 fileno = fxdr_unsigned(long, *++tl);
3314 tl++;
3315 }
3316 len = fxdr_unsigned(int, *tl);
3317 if (len <= 0 || len > NFS_MAXNAMLEN) {
3318 error = EBADRPC;
3319 goto nfsmout;
3320 }
3321 tlen = NFSM_RNDUP(len);
3322 if (tlen == len)
3323 tlen += 4; /* To ensure null termination */
3324 left = DIRBLKSIZ - blksiz;
3325 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) {
3326 dp->d_reclen += left;
3327 uio_iov_base_add(uiop, left);
3328 uio_iov_len_add(uiop, -(left));
3329 uio_uio_resid_add(uiop, -(left));
3330 uiop->uio_offset += left;
3331 blksiz = 0;
3332 }
3333 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
3334 bigenough = 0;
3335 if (bigenough) {
3336 dp = (struct dirent *)uio_iov_base(uiop);
3337 dp->d_namlen = len;
3338 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
3339 dp->d_type = DT_UNKNOWN;
3340 blksiz += dp->d_reclen;
3341 if (blksiz == DIRBLKSIZ)
3342 blksiz = 0;
3343 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3344 uiop->uio_offset += DIRHDSIZ;
3345 uio_iov_base_add(uiop, DIRHDSIZ);
3346 uio_iov_len_add(uiop, -(DIRHDSIZ));
3347 cnp->cn_nameptr = uio_iov_base(uiop);
3348 cnp->cn_namelen = len;
3349 NFSCNHASHZERO(cnp);
3350 error = nfsm_mbufuio(nd, uiop, len);
3351 if (error)
3352 goto nfsmout;
3353 cp = uio_iov_base(uiop);
3354 tlen -= len;
3355 *cp = '\0';
3356 cp += tlen; /* points to cookie storage */
3357 tl2 = (u_int32_t *)cp;
3358 if (len == 2 && cnp->cn_nameptr[0] == '.' &&
3359 cnp->cn_nameptr[1] == '.')
3360 isdotdot = 1;
3361 else
3362 isdotdot = 0;
3363 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3364 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3365 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3366 uiop->uio_offset += (tlen + NFSX_HYPER);
3367 } else {
3368 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3369 if (error)
3370 goto nfsmout;
3371 }
3372 nfhp = NULL;
3373 if (nd->nd_flag & ND_NFSV3) {
3374 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3375 ncookie.lval[0] = *tl++;
3376 ncookie.lval[1] = *tl++;
3377 attrflag = fxdr_unsigned(int, *tl);
3378 if (attrflag) {
3379 error = nfsm_loadattr(nd, &nfsva);
3380 if (error)
3381 goto nfsmout;
3382 }
3383 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3384 if (*tl) {
3385 error = nfsm_getfh(nd, &nfhp);
3386 if (error)
3387 goto nfsmout;
3388 }
3389 if (!attrflag && nfhp != NULL) {
3390 FREE((caddr_t)nfhp, M_NFSFH);
3391 nfhp = NULL;
3392 }
3393 } else {
3394 rderr = 0;
3395 nfsva.na_mntonfileno = 0xffffffff;
3396 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3397 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3398 NULL, NULL, &rderr, p, cred);
3399 if (error)
3400 goto nfsmout;
3401 }
3402
3403 if (bigenough) {
3404 if (nd->nd_flag & ND_NFSV4) {
3405 if (rderr) {
3406 dp->d_fileno = 0;
3407 } else if (gotmnton) {
3408 if (nfsva.na_mntonfileno != 0xffffffff)
3409 dp->d_fileno = nfsva.na_mntonfileno;
3410 else
3411 dp->d_fileno = nfsva.na_fileid;
3412 } else if (nfsva.na_filesid[0] ==
3413 dnp->n_vattr.na_filesid[0] &&
3414 nfsva.na_filesid[1] ==
3415 dnp->n_vattr.na_filesid[1]) {
3416 dp->d_fileno = nfsva.na_fileid;
3417 } else {
3418 do {
3419 fakefileno--;
3420 } while (fakefileno ==
3421 nfsva.na_fileid);
3422 dp->d_fileno = fakefileno;
3423 }
3424 } else {
3425 dp->d_fileno = fileno;
3426 }
3427 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3428 ncookie.lval[0];
3429 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3430 ncookie.lval[1];
3431
3432 if (nfhp != NULL) {
3433 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3434 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3435 VREF(vp);
3436 newvp = vp;
3437 unlocknewvp = 0;
3438 FREE((caddr_t)nfhp, M_NFSFH);
3439 np = dnp;
3440 } else if (isdotdot != 0) {
3441 /*
3442 * Skip doing a nfscl_nget() call for "..".
3443 * There's a race between acquiring the nfs
3444 * node here and lookups that look for the
3445 * directory being read (in the parent).
3446 * It would try to get a lock on ".." here,
3447 * owning the lock on the directory being
3448 * read. Lookup will hold the lock on ".."
3449 * and try to acquire the lock on the
3450 * directory being read.
3451 * If the directory is unlocked/relocked,
3452 * then there is a LOR with the buflock
3453 * vp is relocked.
3454 */
3455 free(nfhp, M_NFSFH);
3456 } else {
3457 error = nfscl_nget(vnode_mount(vp), vp,
3458 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
3459 if (!error) {
3460 newvp = NFSTOV(np);
3461 unlocknewvp = 1;
3462 }
3463 }
3464 nfhp = NULL;
3465 if (newvp != NULLVP) {
3466 error = nfscl_loadattrcache(&newvp,
3467 &nfsva, NULL, NULL, 0, 0);
3468 if (error) {
3469 if (unlocknewvp)
3470 vput(newvp);
3471 else
3472 vrele(newvp);
3473 goto nfsmout;
3474 }
3475 dp->d_type =
3476 vtonfs_dtype(np->n_vattr.na_type);
3477 ndp->ni_vp = newvp;
3478 NFSCNHASH(cnp, HASHINIT);
3479 if (cnp->cn_namelen <= NCHNAMLEN &&
3480 (newvp->v_type != VDIR ||
3481 dctime.tv_sec != 0)) {
3482 cache_enter_time(ndp->ni_dvp,
3483 ndp->ni_vp, cnp,
3484 &nfsva.na_ctime,
3485 newvp->v_type != VDIR ? NULL :
3486 &dctime);
3487 }
3488 if (unlocknewvp)
3489 vput(newvp);
3490 else
3491 vrele(newvp);
3492 newvp = NULLVP;
3493 }
3494 }
3495 } else if (nfhp != NULL) {
3496 FREE((caddr_t)nfhp, M_NFSFH);
3497 }
3498 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3499 more_dirs = fxdr_unsigned(int, *tl);
3500 }
3501 /*
3502 * If at end of rpc data, get the eof boolean
3503 */
3504 if (!more_dirs) {
3505 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3506 eof = fxdr_unsigned(int, *tl);
3507 if (tryformoredirs)
3508 more_dirs = !eof;
3509 if (nd->nd_flag & ND_NFSV4) {
3510 error = nfscl_postop_attr(nd, nap, attrflagp,
3511 stuff);
3512 if (error)
3513 goto nfsmout;
3514 }
3515 }
3516 mbuf_freem(nd->nd_mrep);
3517 nd->nd_mrep = NULL;
3518 }
3519 /*
3520 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3521 * by increasing d_reclen for the last record.
3522 */
3523 if (blksiz > 0) {
3524 left = DIRBLKSIZ - blksiz;
3525 dp->d_reclen += left;
3526 uio_iov_base_add(uiop, left);
3527 uio_iov_len_add(uiop, -(left));
3528 uio_uio_resid_add(uiop, -(left));
3529 uiop->uio_offset += left;
3530 }
3531
3532 /*
3533 * If returning no data, assume end of file.
3534 * If not bigenough, return not end of file, since you aren't
3535 * returning all the data
3536 * Otherwise, return the eof flag from the server.
3537 */
3538 if (eofp != NULL) {
3539 if (tresid == uio_uio_resid(uiop))
3540 *eofp = 1;
3541 else if (!bigenough)
3542 *eofp = 0;
3543 else
3544 *eofp = eof;
3545 }
3546
3547 nfsmout:
3548 if (nd->nd_mrep != NULL)
3549 mbuf_freem(nd->nd_mrep);
3550 return (error);
3551 }
3552 #endif /* !APPLE */
3553
3554 /*
3555 * Nfs commit rpc
3556 */
3557 APPLESTATIC int
3558 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3559 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3560 {
3561 u_int32_t *tl;
3562 struct nfsrv_descript nfsd, *nd = &nfsd;
3563 nfsattrbit_t attrbits;
3564 int error;
3565 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3566
3567 *attrflagp = 0;
3568 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3569 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3570 txdr_hyper(offset, tl);
3571 tl += 2;
3572 *tl = txdr_unsigned(cnt);
3573 if (nd->nd_flag & ND_NFSV4) {
3574 /*
3575 * And do a Getattr op.
3576 */
3577 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3578 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3579 NFSGETATTR_ATTRBIT(&attrbits);
3580 (void) nfsrv_putattrbit(nd, &attrbits);
3581 }
3582 error = nfscl_request(nd, vp, p, cred, stuff);
3583 if (error)
3584 return (error);
3585 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3586 if (!error && !nd->nd_repstat) {
3587 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3588 NFSLOCKMNT(nmp);
3589 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) {
3590 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
3591 nd->nd_repstat = NFSERR_STALEWRITEVERF;
3592 }
3593 NFSUNLOCKMNT(nmp);
3594 if (nd->nd_flag & ND_NFSV4)
3595 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3596 }
3597 nfsmout:
3598 if (!error && nd->nd_repstat)
3599 error = nd->nd_repstat;
3600 mbuf_freem(nd->nd_mrep);
3601 return (error);
3602 }
3603
3604 /*
3605 * NFS byte range lock rpc.
3606 * (Mostly just calls one of the three lower level RPC routines.)
3607 */
3608 APPLESTATIC int
3609 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3610 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3611 {
3612 struct nfscllockowner *lp;
3613 struct nfsclclient *clp;
3614 struct nfsfh *nfhp;
3615 struct nfsrv_descript nfsd, *nd = &nfsd;
3616 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3617 u_int64_t off, len;
3618 off_t start, end;
3619 u_int32_t clidrev = 0;
3620 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3621 int callcnt, dorpc;
3622
3623 /*
3624 * Convert the flock structure into a start and end and do POSIX
3625 * bounds checking.
3626 */
3627 switch (fl->l_whence) {
3628 case SEEK_SET:
3629 case SEEK_CUR:
3630 /*
3631 * Caller is responsible for adding any necessary offset
3632 * when SEEK_CUR is used.
3633 */
3634 start = fl->l_start;
3635 off = fl->l_start;
3636 break;
3637 case SEEK_END:
3638 start = size + fl->l_start;
3639 off = size + fl->l_start;
3640 break;
3641 default:
3642 return (EINVAL);
3643 };
3644 if (start < 0)
3645 return (EINVAL);
3646 if (fl->l_len != 0) {
3647 end = start + fl->l_len - 1;
3648 if (end < start)
3649 return (EINVAL);
3650 }
3651
3652 len = fl->l_len;
3653 if (len == 0)
3654 len = NFS64BITSSET;
3655 retrycnt = 0;
3656 do {
3657 nd->nd_repstat = 0;
3658 if (op == F_GETLK) {
3659 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3660 if (error)
3661 return (error);
3662 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
3663 if (!error) {
3664 clidrev = clp->nfsc_clientidrev;
3665 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3666 p, id, flags);
3667 } else if (error == -1) {
3668 error = 0;
3669 }
3670 nfscl_clientrelease(clp);
3671 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3672 /*
3673 * We must loop around for all lockowner cases.
3674 */
3675 callcnt = 0;
3676 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3677 if (error)
3678 return (error);
3679 do {
3680 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3681 clp, id, flags, &lp, &dorpc);
3682 /*
3683 * If it returns a NULL lp, we're done.
3684 */
3685 if (lp == NULL) {
3686 if (callcnt == 0)
3687 nfscl_clientrelease(clp);
3688 else
3689 nfscl_releasealllocks(clp, vp, p, id, flags);
3690 return (error);
3691 }
3692 if (nmp->nm_clp != NULL)
3693 clidrev = nmp->nm_clp->nfsc_clientidrev;
3694 else
3695 clidrev = 0;
3696 /*
3697 * If the server doesn't support Posix lock semantics,
3698 * only allow locks on the entire file, since it won't
3699 * handle overlapping byte ranges.
3700 * There might still be a problem when a lock
3701 * upgrade/downgrade (read<->write) occurs, since the
3702 * server "might" expect an unlock first?
3703 */
3704 if (dorpc && (lp->nfsl_open->nfso_posixlock ||
3705 (off == 0 && len == NFS64BITSSET))) {
3706 /*
3707 * Since the lock records will go away, we must
3708 * wait for grace and delay here.
3709 */
3710 do {
3711 error = nfsrpc_locku(nd, nmp, lp, off, len,
3712 NFSV4LOCKT_READ, cred, p, 0);
3713 if ((nd->nd_repstat == NFSERR_GRACE ||
3714 nd->nd_repstat == NFSERR_DELAY) &&
3715 error == 0)
3716 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
3717 "nfs_advlock");
3718 } while ((nd->nd_repstat == NFSERR_GRACE ||
3719 nd->nd_repstat == NFSERR_DELAY) && error == 0);
3720 }
3721 callcnt++;
3722 } while (error == 0 && nd->nd_repstat == 0);
3723 nfscl_releasealllocks(clp, vp, p, id, flags);
3724 } else if (op == F_SETLK) {
3725 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
3726 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
3727 if (error || donelocally) {
3728 return (error);
3729 }
3730 if (nmp->nm_clp != NULL)
3731 clidrev = nmp->nm_clp->nfsc_clientidrev;
3732 else
3733 clidrev = 0;
3734 nfhp = VTONFS(vp)->n_fhp;
3735 if (!lp->nfsl_open->nfso_posixlock &&
3736 (off != 0 || len != NFS64BITSSET)) {
3737 error = EINVAL;
3738 } else {
3739 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
3740 nfhp->nfh_len, lp, newone, reclaim, off,
3741 len, fl->l_type, cred, p, 0);
3742 }
3743 if (!error)
3744 error = nd->nd_repstat;
3745 nfscl_lockrelease(lp, error, newone);
3746 } else {
3747 error = EINVAL;
3748 }
3749 if (!error)
3750 error = nd->nd_repstat;
3751 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
3752 error == NFSERR_STALEDONTRECOVER ||
3753 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3754 error == NFSERR_BADSESSION) {
3755 (void) nfs_catnap(PZERO, error, "nfs_advlock");
3756 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
3757 && clidrev != 0) {
3758 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
3759 retrycnt++;
3760 }
3761 } while (error == NFSERR_GRACE ||
3762 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3763 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
3764 error == NFSERR_BADSESSION ||
3765 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
3766 expireret == 0 && clidrev != 0 && retrycnt < 4));
3767 if (error && retrycnt >= 4)
3768 error = EIO;
3769 return (error);
3770 }
3771
3772 /*
3773 * The lower level routine for the LockT case.
3774 */
3775 APPLESTATIC int
3776 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
3777 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
3778 struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3779 {
3780 u_int32_t *tl;
3781 int error, type, size;
3782 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3783 struct nfsnode *np;
3784 struct nfsmount *nmp;
3785
3786 nmp = VFSTONFS(vp->v_mount);
3787 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
3788 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3789 if (fl->l_type == F_RDLCK)
3790 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3791 else
3792 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3793 txdr_hyper(off, tl);
3794 tl += 2;
3795 txdr_hyper(len, tl);
3796 tl += 2;
3797 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
3798 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
3799 nfscl_filllockowner(id, own, flags);
3800 np = VTONFS(vp);
3801 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
3802 np->n_fhp->nfh_len);
3803 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
3804 error = nfscl_request(nd, vp, p, cred, NULL);
3805 if (error)
3806 return (error);
3807 if (nd->nd_repstat == 0) {
3808 fl->l_type = F_UNLCK;
3809 } else if (nd->nd_repstat == NFSERR_DENIED) {
3810 nd->nd_repstat = 0;
3811 fl->l_whence = SEEK_SET;
3812 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3813 fl->l_start = fxdr_hyper(tl);
3814 tl += 2;
3815 len = fxdr_hyper(tl);
3816 tl += 2;
3817 if (len == NFS64BITSSET)
3818 fl->l_len = 0;
3819 else
3820 fl->l_len = len;
3821 type = fxdr_unsigned(int, *tl++);
3822 if (type == NFSV4LOCKT_WRITE)
3823 fl->l_type = F_WRLCK;
3824 else
3825 fl->l_type = F_RDLCK;
3826 /*
3827 * XXX For now, I have no idea what to do with the
3828 * conflicting lock_owner, so I'll just set the pid == 0
3829 * and skip over the lock_owner.
3830 */
3831 fl->l_pid = (pid_t)0;
3832 tl += 2;
3833 size = fxdr_unsigned(int, *tl);
3834 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3835 error = EBADRPC;
3836 if (!error)
3837 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3838 } else if (nd->nd_repstat == NFSERR_STALECLIENTID ||
3839 nd->nd_repstat == NFSERR_BADSESSION)
3840 nfscl_initiate_recovery(clp);
3841 nfsmout:
3842 mbuf_freem(nd->nd_mrep);
3843 return (error);
3844 }
3845
3846 /*
3847 * Lower level function that performs the LockU RPC.
3848 */
3849 static int
3850 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
3851 struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
3852 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
3853 {
3854 u_int32_t *tl;
3855 int error;
3856
3857 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
3858 lp->nfsl_open->nfso_fhlen, NULL, NULL);
3859 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
3860 *tl++ = txdr_unsigned(type);
3861 *tl = txdr_unsigned(lp->nfsl_seqid);
3862 if (nfstest_outofseq &&
3863 (arc4random() % nfstest_outofseq) == 0)
3864 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3865 tl++;
3866 if (NFSHASNFSV4N(nmp))
3867 *tl++ = 0;
3868 else
3869 *tl++ = lp->nfsl_stateid.seqid;
3870 *tl++ = lp->nfsl_stateid.other[0];
3871 *tl++ = lp->nfsl_stateid.other[1];
3872 *tl++ = lp->nfsl_stateid.other[2];
3873 txdr_hyper(off, tl);
3874 tl += 2;
3875 txdr_hyper(len, tl);
3876 if (syscred)
3877 nd->nd_flag |= ND_USEGSSNAME;
3878 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
3879 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
3880 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3881 if (error)
3882 return (error);
3883 if (nd->nd_repstat == 0) {
3884 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3885 lp->nfsl_stateid.seqid = *tl++;
3886 lp->nfsl_stateid.other[0] = *tl++;
3887 lp->nfsl_stateid.other[1] = *tl++;
3888 lp->nfsl_stateid.other[2] = *tl;
3889 } else if (nd->nd_repstat == NFSERR_STALESTATEID ||
3890 nd->nd_repstat == NFSERR_BADSESSION)
3891 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3892 nfsmout:
3893 mbuf_freem(nd->nd_mrep);
3894 return (error);
3895 }
3896
3897 /*
3898 * The actual Lock RPC.
3899 */
3900 APPLESTATIC int
3901 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
3902 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
3903 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
3904 NFSPROC_T *p, int syscred)
3905 {
3906 u_int32_t *tl;
3907 int error, size;
3908 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3909
3910 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL);
3911 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3912 if (type == F_RDLCK)
3913 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3914 else
3915 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3916 *tl++ = txdr_unsigned(reclaim);
3917 txdr_hyper(off, tl);
3918 tl += 2;
3919 txdr_hyper(len, tl);
3920 tl += 2;
3921 if (newone) {
3922 *tl = newnfs_true;
3923 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
3924 2 * NFSX_UNSIGNED + NFSX_HYPER);
3925 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
3926 if (NFSHASNFSV4N(nmp))
3927 *tl++ = 0;
3928 else
3929 *tl++ = lp->nfsl_open->nfso_stateid.seqid;
3930 *tl++ = lp->nfsl_open->nfso_stateid.other[0];
3931 *tl++ = lp->nfsl_open->nfso_stateid.other[1];
3932 *tl++ = lp->nfsl_open->nfso_stateid.other[2];
3933 *tl++ = txdr_unsigned(lp->nfsl_seqid);
3934 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
3935 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
3936 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
3937 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
3938 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
3939 } else {
3940 *tl = newnfs_false;
3941 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
3942 if (NFSHASNFSV4N(nmp))
3943 *tl++ = 0;
3944 else
3945 *tl++ = lp->nfsl_stateid.seqid;
3946 *tl++ = lp->nfsl_stateid.other[0];
3947 *tl++ = lp->nfsl_stateid.other[1];
3948 *tl++ = lp->nfsl_stateid.other[2];
3949 *tl = txdr_unsigned(lp->nfsl_seqid);
3950 if (nfstest_outofseq &&
3951 (arc4random() % nfstest_outofseq) == 0)
3952 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3953 }
3954 if (syscred)
3955 nd->nd_flag |= ND_USEGSSNAME;
3956 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
3957 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
3958 if (error)
3959 return (error);
3960 if (newone)
3961 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
3962 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3963 if (nd->nd_repstat == 0) {
3964 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3965 lp->nfsl_stateid.seqid = *tl++;
3966 lp->nfsl_stateid.other[0] = *tl++;
3967 lp->nfsl_stateid.other[1] = *tl++;
3968 lp->nfsl_stateid.other[2] = *tl;
3969 } else if (nd->nd_repstat == NFSERR_DENIED) {
3970 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3971 size = fxdr_unsigned(int, *(tl + 7));
3972 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3973 error = EBADRPC;
3974 if (!error)
3975 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3976 } else if (nd->nd_repstat == NFSERR_STALESTATEID ||
3977 nd->nd_repstat == NFSERR_BADSESSION)
3978 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3979 nfsmout:
3980 mbuf_freem(nd->nd_mrep);
3981 return (error);
3982 }
3983
3984 /*
3985 * nfs statfs rpc
3986 * (always called with the vp for the mount point)
3987 */
3988 APPLESTATIC int
3989 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
3990 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3991 void *stuff)
3992 {
3993 u_int32_t *tl = NULL;
3994 struct nfsrv_descript nfsd, *nd = &nfsd;
3995 struct nfsmount *nmp;
3996 nfsattrbit_t attrbits;
3997 int error;
3998
3999 *attrflagp = 0;
4000 nmp = VFSTONFS(vnode_mount(vp));
4001 if (NFSHASNFSV4(nmp)) {
4002 /*
4003 * For V4, you actually do a getattr.
4004 */
4005 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4006 NFSSTATFS_GETATTRBIT(&attrbits);
4007 (void) nfsrv_putattrbit(nd, &attrbits);
4008 nd->nd_flag |= ND_USEGSSNAME;
4009 error = nfscl_request(nd, vp, p, cred, stuff);
4010 if (error)
4011 return (error);
4012 if (nd->nd_repstat == 0) {
4013 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4014 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
4015 cred);
4016 if (!error) {
4017 nmp->nm_fsid[0] = nap->na_filesid[0];
4018 nmp->nm_fsid[1] = nap->na_filesid[1];
4019 NFSSETHASSETFSID(nmp);
4020 *attrflagp = 1;
4021 }
4022 } else {
4023 error = nd->nd_repstat;
4024 }
4025 if (error)
4026 goto nfsmout;
4027 } else {
4028 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
4029 error = nfscl_request(nd, vp, p, cred, stuff);
4030 if (error)
4031 return (error);
4032 if (nd->nd_flag & ND_NFSV3) {
4033 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4034 if (error)
4035 goto nfsmout;
4036 }
4037 if (nd->nd_repstat) {
4038 error = nd->nd_repstat;
4039 goto nfsmout;
4040 }
4041 NFSM_DISSECT(tl, u_int32_t *,
4042 NFSX_STATFS(nd->nd_flag & ND_NFSV3));
4043 }
4044 if (NFSHASNFSV3(nmp)) {
4045 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
4046 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
4047 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
4048 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
4049 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
4050 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
4051 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
4052 } else if (NFSHASNFSV4(nmp) == 0) {
4053 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
4054 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
4055 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
4056 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
4057 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
4058 }
4059 nfsmout:
4060 mbuf_freem(nd->nd_mrep);
4061 return (error);
4062 }
4063
4064 /*
4065 * nfs pathconf rpc
4066 */
4067 APPLESTATIC int
4068 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
4069 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4070 void *stuff)
4071 {
4072 struct nfsrv_descript nfsd, *nd = &nfsd;
4073 struct nfsmount *nmp;
4074 u_int32_t *tl;
4075 nfsattrbit_t attrbits;
4076 int error;
4077
4078 *attrflagp = 0;
4079 nmp = VFSTONFS(vnode_mount(vp));
4080 if (NFSHASNFSV4(nmp)) {
4081 /*
4082 * For V4, you actually do a getattr.
4083 */
4084 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4085 NFSPATHCONF_GETATTRBIT(&attrbits);
4086 (void) nfsrv_putattrbit(nd, &attrbits);
4087 nd->nd_flag |= ND_USEGSSNAME;
4088 error = nfscl_request(nd, vp, p, cred, stuff);
4089 if (error)
4090 return (error);
4091 if (nd->nd_repstat == 0) {
4092 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4093 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
4094 cred);
4095 if (!error)
4096 *attrflagp = 1;
4097 } else {
4098 error = nd->nd_repstat;
4099 }
4100 } else {
4101 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
4102 error = nfscl_request(nd, vp, p, cred, stuff);
4103 if (error)
4104 return (error);
4105 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4106 if (nd->nd_repstat && !error)
4107 error = nd->nd_repstat;
4108 if (!error) {
4109 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
4110 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
4111 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
4112 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
4113 pc->pc_chownrestricted =
4114 fxdr_unsigned(u_int32_t, *tl++);
4115 pc->pc_caseinsensitive =
4116 fxdr_unsigned(u_int32_t, *tl++);
4117 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
4118 }
4119 }
4120 nfsmout:
4121 mbuf_freem(nd->nd_mrep);
4122 return (error);
4123 }
4124
4125 /*
4126 * nfs version 3 fsinfo rpc call
4127 */
4128 APPLESTATIC int
4129 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
4130 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
4131 {
4132 u_int32_t *tl;
4133 struct nfsrv_descript nfsd, *nd = &nfsd;
4134 int error;
4135
4136 *attrflagp = 0;
4137 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
4138 error = nfscl_request(nd, vp, p, cred, stuff);
4139 if (error)
4140 return (error);
4141 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4142 if (nd->nd_repstat && !error)
4143 error = nd->nd_repstat;
4144 if (!error) {
4145 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
4146 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
4147 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
4148 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
4149 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
4150 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
4151 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
4152 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
4153 fsp->fs_maxfilesize = fxdr_hyper(tl);
4154 tl += 2;
4155 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
4156 tl += 2;
4157 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
4158 }
4159 nfsmout:
4160 mbuf_freem(nd->nd_mrep);
4161 return (error);
4162 }
4163
4164 /*
4165 * This function performs the Renew RPC.
4166 */
4167 APPLESTATIC int
4168 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred,
4169 NFSPROC_T *p)
4170 {
4171 u_int32_t *tl;
4172 struct nfsrv_descript nfsd;
4173 struct nfsrv_descript *nd = &nfsd;
4174 struct nfsmount *nmp;
4175 int error;
4176 struct nfssockreq *nrp;
4177
4178 nmp = clp->nfsc_nmp;
4179 if (nmp == NULL)
4180 return (0);
4181 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
4182 &dsp->nfsclds_sess);
4183 if (!NFSHASNFSV4N(nmp)) {
4184 /* NFSv4.1 just uses a Sequence Op and not a Renew. */
4185 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4186 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
4187 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
4188 }
4189 nrp = dsp->nfsclds_sockp;
4190 if (nrp == NULL)
4191 /* If NULL, use the MDS socket. */
4192 nrp = &nmp->nm_sockreq;
4193 nd->nd_flag |= ND_USEGSSNAME;
4194 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4195 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
4196 if (error)
4197 return (error);
4198 error = nd->nd_repstat;
4199 mbuf_freem(nd->nd_mrep);
4200 return (error);
4201 }
4202
4203 /*
4204 * This function performs the Releaselockowner RPC.
4205 */
4206 APPLESTATIC int
4207 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
4208 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
4209 {
4210 struct nfsrv_descript nfsd, *nd = &nfsd;
4211 u_int32_t *tl;
4212 int error;
4213 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4214
4215 if (NFSHASNFSV4N(nmp)) {
4216 /* For NFSv4.1, do a FreeStateID. */
4217 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
4218 NULL);
4219 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
4220 } else {
4221 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
4222 NULL);
4223 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4224 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
4225 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
4226 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4227 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4228 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4229 }
4230 nd->nd_flag |= ND_USEGSSNAME;
4231 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4232 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4233 if (error)
4234 return (error);
4235 error = nd->nd_repstat;
4236 mbuf_freem(nd->nd_mrep);
4237 return (error);
4238 }
4239
4240 /*
4241 * This function performs the Compound to get the mount pt FH.
4242 */
4243 APPLESTATIC int
4244 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4245 NFSPROC_T *p)
4246 {
4247 u_int32_t *tl;
4248 struct nfsrv_descript nfsd;
4249 struct nfsrv_descript *nd = &nfsd;
4250 u_char *cp, *cp2;
4251 int error, cnt, len, setnil;
4252 u_int32_t *opcntp;
4253
4254 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL);
4255 cp = dirpath;
4256 cnt = 0;
4257 do {
4258 setnil = 0;
4259 while (*cp == '/')
4260 cp++;
4261 cp2 = cp;
4262 while (*cp2 != '\0' && *cp2 != '/')
4263 cp2++;
4264 if (*cp2 == '/') {
4265 setnil = 1;
4266 *cp2 = '\0';
4267 }
4268 if (cp2 != cp) {
4269 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4270 *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4271 nfsm_strtom(nd, cp, strlen(cp));
4272 cnt++;
4273 }
4274 if (setnil)
4275 *cp2++ = '/';
4276 cp = cp2;
4277 } while (*cp != '\0');
4278 if (NFSHASNFSV4N(nmp))
4279 /* Has a Sequence Op done by nfscl_reqstart(). */
4280 *opcntp = txdr_unsigned(3 + cnt);
4281 else
4282 *opcntp = txdr_unsigned(2 + cnt);
4283 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4284 *tl = txdr_unsigned(NFSV4OP_GETFH);
4285 nd->nd_flag |= ND_USEGSSNAME;
4286 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4287 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4288 if (error)
4289 return (error);
4290 if (nd->nd_repstat == 0) {
4291 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4292 tl += (2 + 2 * cnt);
4293 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4294 len > NFSX_FHMAX) {
4295 nd->nd_repstat = NFSERR_BADXDR;
4296 } else {
4297 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4298 if (nd->nd_repstat == 0)
4299 nmp->nm_fhsize = len;
4300 }
4301 }
4302 error = nd->nd_repstat;
4303 nfsmout:
4304 mbuf_freem(nd->nd_mrep);
4305 return (error);
4306 }
4307
4308 /*
4309 * This function performs the Delegreturn RPC.
4310 */
4311 APPLESTATIC int
4312 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4313 struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4314 {
4315 u_int32_t *tl;
4316 struct nfsrv_descript nfsd;
4317 struct nfsrv_descript *nd = &nfsd;
4318 int error;
4319
4320 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4321 dp->nfsdl_fhlen, NULL, NULL);
4322 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4323 if (NFSHASNFSV4N(nmp))
4324 *tl++ = 0;
4325 else
4326 *tl++ = dp->nfsdl_stateid.seqid;
4327 *tl++ = dp->nfsdl_stateid.other[0];
4328 *tl++ = dp->nfsdl_stateid.other[1];
4329 *tl = dp->nfsdl_stateid.other[2];
4330 if (syscred)
4331 nd->nd_flag |= ND_USEGSSNAME;
4332 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4333 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4334 if (error)
4335 return (error);
4336 error = nd->nd_repstat;
4337 mbuf_freem(nd->nd_mrep);
4338 return (error);
4339 }
4340
4341 /*
4342 * nfs getacl call.
4343 */
4344 APPLESTATIC int
4345 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4346 struct acl *aclp, void *stuff)
4347 {
4348 struct nfsrv_descript nfsd, *nd = &nfsd;
4349 int error;
4350 nfsattrbit_t attrbits;
4351 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4352
4353 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4354 return (EOPNOTSUPP);
4355 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4356 NFSZERO_ATTRBIT(&attrbits);
4357 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4358 (void) nfsrv_putattrbit(nd, &attrbits);
4359 error = nfscl_request(nd, vp, p, cred, stuff);
4360 if (error)
4361 return (error);
4362 if (!nd->nd_repstat)
4363 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4364 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4365 else
4366 error = nd->nd_repstat;
4367 mbuf_freem(nd->nd_mrep);
4368 return (error);
4369 }
4370
4371 /*
4372 * nfs setacl call.
4373 */
4374 APPLESTATIC int
4375 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4376 struct acl *aclp, void *stuff)
4377 {
4378 int error;
4379 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4380
4381 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4382 return (EOPNOTSUPP);
4383 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4384 return (error);
4385 }
4386
4387 /*
4388 * nfs setacl call.
4389 */
4390 static int
4391 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4392 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4393 {
4394 struct nfsrv_descript nfsd, *nd = &nfsd;
4395 int error;
4396 nfsattrbit_t attrbits;
4397 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4398
4399 if (!NFSHASNFSV4(nmp))
4400 return (EOPNOTSUPP);
4401 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4402 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4403 NFSZERO_ATTRBIT(&attrbits);
4404 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4405 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
4406 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
4407 error = nfscl_request(nd, vp, p, cred, stuff);
4408 if (error)
4409 return (error);
4410 /* Don't care about the pre/postop attributes */
4411 mbuf_freem(nd->nd_mrep);
4412 return (nd->nd_repstat);
4413 }
4414
4415 /*
4416 * Do the NFSv4.1 Exchange ID.
4417 */
4418 int
4419 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp,
4420 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp,
4421 struct ucred *cred, NFSPROC_T *p)
4422 {
4423 uint32_t *tl, v41flags;
4424 struct nfsrv_descript nfsd;
4425 struct nfsrv_descript *nd = &nfsd;
4426 struct nfsclds *dsp;
4427 struct timespec verstime;
4428 int error, len;
4429
4430 *dspp = NULL;
4431 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL);
4432 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4433 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */
4434 *tl = txdr_unsigned(clp->nfsc_rev);
4435 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
4436
4437 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4438 *tl++ = txdr_unsigned(exchflags);
4439 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE);
4440
4441 /* Set the implementation id4 */
4442 *tl = txdr_unsigned(1);
4443 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org"));
4444 (void) nfsm_strtom(nd, version, strlen(version));
4445 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME);
4446 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */
4447 verstime.tv_nsec = 0;
4448 txdr_nfsv4time(&verstime, tl);
4449 nd->nd_flag |= ND_USEGSSNAME;
4450 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4451 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4452 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error,
4453 (int)nd->nd_repstat);
4454 if (error != 0)
4455 return (error);
4456 if (nd->nd_repstat == 0) {
4457 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER);
4458 len = fxdr_unsigned(int, *(tl + 7));
4459 if (len < 0 || len > NFSV4_OPAQUELIMIT) {
4460 error = NFSERR_BADXDR;
4461 goto nfsmout;
4462 }
4463 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS,
4464 M_WAITOK | M_ZERO);
4465 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
4466 dsp->nfsclds_servownlen = len;
4467 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++;
4468 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++;
4469 dsp->nfsclds_sess.nfsess_sequenceid =
4470 fxdr_unsigned(uint32_t, *tl++);
4471 v41flags = fxdr_unsigned(uint32_t, *tl);
4472 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 &&
4473 NFSHASPNFSOPT(nmp)) {
4474 NFSCL_DEBUG(1, "set PNFS\n");
4475 NFSLOCKMNT(nmp);
4476 nmp->nm_state |= NFSSTA_PNFS;
4477 NFSUNLOCKMNT(nmp);
4478 dsp->nfsclds_flags |= NFSCLDS_MDS;
4479 }
4480 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0)
4481 dsp->nfsclds_flags |= NFSCLDS_DS;
4482 if (len > 0)
4483 nd->nd_repstat = nfsrv_mtostr(nd,
4484 dsp->nfsclds_serverown, len);
4485 if (nd->nd_repstat == 0) {
4486 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
4487 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
4488 NULL, MTX_DEF);
4489 nfscl_initsessionslots(&dsp->nfsclds_sess);
4490 *dspp = dsp;
4491 } else
4492 free(dsp, M_NFSCLDS);
4493 }
4494 error = nd->nd_repstat;
4495 nfsmout:
4496 mbuf_freem(nd->nd_mrep);
4497 return (error);
4498 }
4499
4500 /*
4501 * Do the NFSv4.1 Create Session.
4502 */
4503 int
4504 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
4505 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred,
4506 NFSPROC_T *p)
4507 {
4508 uint32_t crflags, *tl;
4509 struct nfsrv_descript nfsd;
4510 struct nfsrv_descript *nd = &nfsd;
4511 int error, irdcnt;
4512
4513 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL);
4514 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
4515 *tl++ = sep->nfsess_clientid.lval[0];
4516 *tl++ = sep->nfsess_clientid.lval[1];
4517 *tl++ = txdr_unsigned(sequenceid);
4518 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST);
4519 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0)
4520 crflags |= NFSV4CRSESS_CONNBACKCHAN;
4521 *tl = txdr_unsigned(crflags);
4522
4523 /* Fill in fore channel attributes. */
4524 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4525 *tl++ = 0; /* Header pad size */
4526 *tl++ = txdr_unsigned(100000); /* Max request size */
4527 *tl++ = txdr_unsigned(100000); /* Max response size */
4528 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4529 *tl++ = txdr_unsigned(20); /* Max operations */
4530 *tl++ = txdr_unsigned(64); /* Max slots */
4531 *tl = 0; /* No rdma ird */
4532
4533 /* Fill in back channel attributes. */
4534 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4535 *tl++ = 0; /* Header pad size */
4536 *tl++ = txdr_unsigned(10000); /* Max request size */
4537 *tl++ = txdr_unsigned(10000); /* Max response size */
4538 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4539 *tl++ = txdr_unsigned(4); /* Max operations */
4540 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */
4541 *tl = 0; /* No rdma ird */
4542
4543 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED);
4544 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */
4545
4546 /* Allow AUTH_SYS callbacks as uid, gid == 0. */
4547 *tl++ = txdr_unsigned(1); /* Auth_sys only */
4548 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */
4549 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */
4550 *tl++ = 0; /* Null machine name */
4551 *tl++ = 0; /* Uid == 0 */
4552 *tl++ = 0; /* Gid == 0 */
4553 *tl = 0; /* No additional gids */
4554 nd->nd_flag |= ND_USEGSSNAME;
4555 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG,
4556 NFS_VER4, NULL, 1, NULL, NULL);
4557 if (error != 0)
4558 return (error);
4559 if (nd->nd_repstat == 0) {
4560 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
4561 2 * NFSX_UNSIGNED);
4562 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID);
4563 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
4564 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++);
4565 crflags = fxdr_unsigned(uint32_t, *tl);
4566 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) {
4567 NFSLOCKMNT(nmp);
4568 nmp->nm_state |= NFSSTA_SESSPERSIST;
4569 NFSUNLOCKMNT(nmp);
4570 }
4571
4572 /* Get the fore channel slot count. */
4573 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4574 tl += 3; /* Skip the other counts. */
4575 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++);
4576 tl++;
4577 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++);
4578 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots);
4579 irdcnt = fxdr_unsigned(int, *tl);
4580 if (irdcnt > 0)
4581 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED);
4582
4583 /* and the back channel slot count. */
4584 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4585 tl += 5;
4586 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl);
4587 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots);
4588 }
4589 error = nd->nd_repstat;
4590 nfsmout:
4591 mbuf_freem(nd->nd_mrep);
4592 return (error);
4593 }
4594
4595 /*
4596 * Do the NFSv4.1 Destroy Session.
4597 */
4598 int
4599 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp,
4600 struct ucred *cred, NFSPROC_T *p)
4601 {
4602 uint32_t *tl;
4603 struct nfsrv_descript nfsd;
4604 struct nfsrv_descript *nd = &nfsd;
4605 int error;
4606
4607 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL);
4608 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID);
4609 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID);
4610 nd->nd_flag |= ND_USEGSSNAME;
4611 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4612 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4613 if (error != 0)
4614 return (error);
4615 error = nd->nd_repstat;
4616 mbuf_freem(nd->nd_mrep);
4617 return (error);
4618 }
4619
4620 /*
4621 * Do the NFSv4.1 Destroy Client.
4622 */
4623 int
4624 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp,
4625 struct ucred *cred, NFSPROC_T *p)
4626 {
4627 uint32_t *tl;
4628 struct nfsrv_descript nfsd;
4629 struct nfsrv_descript *nd = &nfsd;
4630 int error;
4631
4632 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL);
4633 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4634 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
4635 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
4636 nd->nd_flag |= ND_USEGSSNAME;
4637 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4638 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4639 if (error != 0)
4640 return (error);
4641 error = nd->nd_repstat;
4642 mbuf_freem(nd->nd_mrep);
4643 return (error);
4644 }
4645
4646 /*
4647 * Do the NFSv4.1 LayoutGet.
4648 */
4649 int
4650 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
4651 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen,
4652 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp,
4653 struct ucred *cred, NFSPROC_T *p, void *stuff)
4654 {
4655 uint32_t *tl;
4656 struct nfsrv_descript nfsd, *nd = &nfsd;
4657 struct nfsfh *nfhp;
4658 struct nfsclflayout *flp, *prevflp, *tflp;
4659 int cnt, error, gotiomode, fhcnt, nfhlen, i, j;
4660 uint8_t *cp;
4661 uint64_t retlen;
4662
4663 flp = NULL;
4664 gotiomode = -1;
4665 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL);
4666 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
4667 NFSX_STATEID);
4668 *tl++ = newnfs_false; /* Don't signal availability. */
4669 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES);
4670 *tl++ = txdr_unsigned(iomode);
4671 txdr_hyper(offset, tl);
4672 tl += 2;
4673 txdr_hyper(len, tl);
4674 tl += 2;
4675 txdr_hyper(minlen, tl);
4676 tl += 2;
4677 *tl++ = txdr_unsigned(stateidp->seqid);
4678 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid);
4679 *tl++ = stateidp->other[0];
4680 *tl++ = stateidp->other[1];
4681 *tl++ = stateidp->other[2];
4682 *tl = txdr_unsigned(layoutlen);
4683 nd->nd_flag |= ND_USEGSSNAME;
4684 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4685 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4686 if (error != 0)
4687 return (error);
4688 if (nd->nd_repstat == 0) {
4689 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID);
4690 if (*tl++ != 0)
4691 *retonclosep = 1;
4692 else
4693 *retonclosep = 0;
4694 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
4695 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep,
4696 (int)stateidp->seqid);
4697 stateidp->other[0] = *tl++;
4698 stateidp->other[1] = *tl++;
4699 stateidp->other[2] = *tl++;
4700 cnt = fxdr_unsigned(int, *tl);
4701 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt);
4702 if (cnt <= 0 || cnt > 10000) {
4703 /* Don't accept more than 10000 layouts in reply. */
4704 error = NFSERR_BADXDR;
4705 goto nfsmout;
4706 }
4707 for (i = 0; i < cnt; i++) {
4708 /* Dissect all the way to the file handle cnt. */
4709 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER +
4710 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID);
4711 fhcnt = fxdr_unsigned(int, *(tl + 11 +
4712 NFSX_V4DEVICEID / NFSX_UNSIGNED));
4713 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
4714 if (fhcnt < 0 || fhcnt > 100) {
4715 /* Don't accept more than 100 file handles. */
4716 error = NFSERR_BADXDR;
4717 goto nfsmout;
4718 }
4719 if (fhcnt > 1)
4720 flp = malloc(sizeof(*flp) + (fhcnt - 1) *
4721 sizeof(struct nfsfh *),
4722 M_NFSFLAYOUT, M_WAITOK);
4723 else
4724 flp = malloc(sizeof(*flp),
4725 M_NFSFLAYOUT, M_WAITOK);
4726 flp->nfsfl_flags = 0;
4727 flp->nfsfl_fhcnt = 0;
4728 flp->nfsfl_devp = NULL;
4729 flp->nfsfl_off = fxdr_hyper(tl); tl += 2;
4730 retlen = fxdr_hyper(tl); tl += 2;
4731 if (flp->nfsfl_off + retlen < flp->nfsfl_off)
4732 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
4733 else
4734 flp->nfsfl_end = flp->nfsfl_off + retlen;
4735 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++);
4736 if (gotiomode == -1)
4737 gotiomode = flp->nfsfl_iomode;
4738 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode,
4739 (int)flp->nfsfl_iomode);
4740 if (fxdr_unsigned(int, *tl++) !=
4741 NFSLAYOUT_NFSV4_1_FILES) {
4742 printf("NFSv4.1: got non-files layout\n");
4743 error = NFSERR_BADXDR;
4744 goto nfsmout;
4745 }
4746 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID);
4747 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4748 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++);
4749 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util);
4750 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
4751 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
4752 if (fxdr_unsigned(int, *tl) != fhcnt) {
4753 printf("EEK! bad fhcnt\n");
4754 error = NFSERR_BADXDR;
4755 goto nfsmout;
4756 }
4757 for (j = 0; j < fhcnt; j++) {
4758 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4759 nfhlen = fxdr_unsigned(int, *tl);
4760 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) {
4761 error = NFSERR_BADXDR;
4762 goto nfsmout;
4763 }
4764 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1,
4765 M_NFSFH, M_WAITOK);
4766 flp->nfsfl_fh[j] = nfhp;
4767 flp->nfsfl_fhcnt++;
4768 nfhp->nfh_len = nfhlen;
4769 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen));
4770 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen);
4771 }
4772 if (flp->nfsfl_iomode == gotiomode) {
4773 /* Keep the list in increasing offset order. */
4774 tflp = LIST_FIRST(flhp);
4775 prevflp = NULL;
4776 while (tflp != NULL &&
4777 tflp->nfsfl_off < flp->nfsfl_off) {
4778 prevflp = tflp;
4779 tflp = LIST_NEXT(tflp, nfsfl_list);
4780 }
4781 if (prevflp == NULL)
4782 LIST_INSERT_HEAD(flhp, flp, nfsfl_list);
4783 else
4784 LIST_INSERT_AFTER(prevflp, flp,
4785 nfsfl_list);
4786 } else {
4787 printf("nfscl_layoutget(): got wrong iomode\n");
4788 nfscl_freeflayout(flp);
4789 }
4790 flp = NULL;
4791 }
4792 }
4793 if (nd->nd_repstat != 0 && error == 0)
4794 error = nd->nd_repstat;
4795 nfsmout:
4796 if (error != 0 && flp != NULL)
4797 nfscl_freeflayout(flp);
4798 mbuf_freem(nd->nd_mrep);
4799 return (error);
4800 }
4801
4802 /*
4803 * Do the NFSv4.1 Get Device Info.
4804 */
4805 int
4806 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype,
4807 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred,
4808 NFSPROC_T *p)
4809 {
4810 uint32_t cnt, *tl;
4811 struct nfsrv_descript nfsd;
4812 struct nfsrv_descript *nd = &nfsd;
4813 struct sockaddr_storage ss;
4814 struct nfsclds *dsp = NULL, **dspp;
4815 struct nfscldevinfo *ndi;
4816 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt;
4817 uint8_t stripeindex;
4818
4819 *ndip = NULL;
4820 ndi = NULL;
4821 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL);
4822 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
4823 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID);
4824 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4825 *tl++ = txdr_unsigned(layouttype);
4826 *tl++ = txdr_unsigned(100000);
4827 if (notifybitsp != NULL && *notifybitsp != 0) {
4828 *tl = txdr_unsigned(1); /* One word of bits. */
4829 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
4830 *tl = txdr_unsigned(*notifybitsp);
4831 } else
4832 *tl = txdr_unsigned(0);
4833 nd->nd_flag |= ND_USEGSSNAME;
4834 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4835 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4836 if (error != 0)
4837 return (error);
4838 if (nd->nd_repstat == 0) {
4839 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4840 if (layouttype != fxdr_unsigned(int, *tl++))
4841 printf("EEK! devinfo layout type not same!\n");
4842 stripecnt = fxdr_unsigned(int, *++tl);
4843 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
4844 if (stripecnt < 1 || stripecnt > 4096) {
4845 printf("NFS devinfo stripecnt %d: out of range\n",
4846 stripecnt);
4847 error = NFSERR_BADXDR;
4848 goto nfsmout;
4849 }
4850 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED);
4851 addrcnt = fxdr_unsigned(int, *(tl + stripecnt));
4852 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt);
4853 if (addrcnt < 1 || addrcnt > 128) {
4854 printf("NFS devinfo addrcnt %d: out of range\n",
4855 addrcnt);
4856 error = NFSERR_BADXDR;
4857 goto nfsmout;
4858 }
4859
4860 /*
4861 * Now we know how many stripe indices and addresses, so
4862 * we can allocate the structure the correct size.
4863 */
4864 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *)
4865 + 1;
4866 NFSCL_DEBUG(4, "stripeindices=%d\n", i);
4867 ndi = malloc(sizeof(*ndi) + (addrcnt + i) *
4868 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO);
4869 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID);
4870 ndi->nfsdi_refcnt = 0;
4871 ndi->nfsdi_stripecnt = stripecnt;
4872 ndi->nfsdi_addrcnt = addrcnt;
4873 /* Fill in the stripe indices. */
4874 for (i = 0; i < stripecnt; i++) {
4875 stripeindex = fxdr_unsigned(uint8_t, *tl++);
4876 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex);
4877 if (stripeindex >= addrcnt) {
4878 printf("NFS devinfo stripeindex %d: too big\n",
4879 (int)stripeindex);
4880 error = NFSERR_BADXDR;
4881 goto nfsmout;
4882 }
4883 nfsfldi_setstripeindex(ndi, i, stripeindex);
4884 }
4885
4886 /* Now, dissect the server address(es). */
4887 safilled = 0;
4888 for (i = 0; i < addrcnt; i++) {
4889 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4890 cnt = fxdr_unsigned(uint32_t, *tl);
4891 if (cnt == 0) {
4892 printf("NFS devinfo 0 len addrlist\n");
4893 error = NFSERR_BADXDR;
4894 goto nfsmout;
4895 }
4896 dspp = nfsfldi_addr(ndi, i);
4897 pos = arc4random() % cnt; /* Choose one. */
4898 safilled = 0;
4899 for (j = 0; j < cnt; j++) {
4900 error = nfsv4_getipaddr(nd, &ss, &isudp);
4901 if (error != 0 && error != EPERM) {
4902 error = NFSERR_BADXDR;
4903 goto nfsmout;
4904 }
4905 if (error == 0 && isudp == 0) {
4906 /*
4907 * The algorithm is:
4908 * - use "pos" entry if it is of the
4909 * same af_family or none of them
4910 * is of the same af_family
4911 * else
4912 * - use the first one of the same
4913 * af_family.
4914 */
4915 if ((safilled == 0 && ss.ss_family ==
4916 nmp->nm_nam->sa_family) ||
4917 (j == pos &&
4918 (safilled == 0 || ss.ss_family ==
4919 nmp->nm_nam->sa_family)) ||
4920 (safilled == 1 && ss.ss_family ==
4921 nmp->nm_nam->sa_family)) {
4922 error = nfsrpc_fillsa(nmp, &ss,
4923 &dsp, p);
4924 if (error == 0) {
4925 *dspp = dsp;
4926 if (ss.ss_family ==
4927 nmp->nm_nam->sa_family)
4928 safilled = 2;
4929 else
4930 safilled = 1;
4931 }
4932 }
4933 }
4934 }
4935 if (safilled == 0)
4936 break;
4937 }
4938
4939 /* And the notify bits. */
4940 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4941 if (safilled != 0) {
4942 bitcnt = fxdr_unsigned(int, *tl);
4943 if (bitcnt > 0) {
4944 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4945 if (notifybitsp != NULL)
4946 *notifybitsp =
4947 fxdr_unsigned(uint32_t, *tl);
4948 }
4949 *ndip = ndi;
4950 } else
4951 error = EPERM;
4952 }
4953 if (nd->nd_repstat != 0)
4954 error = nd->nd_repstat;
4955 nfsmout:
4956 if (error != 0 && ndi != NULL)
4957 nfscl_freedevinfo(ndi);
4958 mbuf_freem(nd->nd_mrep);
4959 return (error);
4960 }
4961
4962 /*
4963 * Do the NFSv4.1 LayoutCommit.
4964 */
4965 int
4966 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
4967 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp,
4968 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred,
4969 NFSPROC_T *p, void *stuff)
4970 {
4971 uint32_t *tl;
4972 struct nfsrv_descript nfsd, *nd = &nfsd;
4973 int error, outcnt, i;
4974 uint8_t *cp;
4975
4976 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL);
4977 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
4978 NFSX_STATEID);
4979 txdr_hyper(off, tl);
4980 tl += 2;
4981 txdr_hyper(len, tl);
4982 tl += 2;
4983 if (reclaim != 0)
4984 *tl++ = newnfs_true;
4985 else
4986 *tl++ = newnfs_false;
4987 *tl++ = txdr_unsigned(stateidp->seqid);
4988 *tl++ = stateidp->other[0];
4989 *tl++ = stateidp->other[1];
4990 *tl++ = stateidp->other[2];
4991 *tl++ = newnfs_true;
4992 if (lastbyte < off)
4993 lastbyte = off;
4994 else if (lastbyte >= (off + len))
4995 lastbyte = off + len - 1;
4996 txdr_hyper(lastbyte, tl);
4997 tl += 2;
4998 *tl++ = newnfs_false;
4999 *tl++ = txdr_unsigned(layouttype);
5000 *tl = txdr_unsigned(layoutupdatecnt);
5001 if (layoutupdatecnt > 0) {
5002 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES,
5003 ("Must be nil for Files Layout"));
5004 outcnt = NFSM_RNDUP(layoutupdatecnt);
5005 NFSM_BUILD(cp, uint8_t *, outcnt);
5006 NFSBCOPY(layp, cp, layoutupdatecnt);
5007 cp += layoutupdatecnt;
5008 for (i = 0; i < (outcnt - layoutupdatecnt); i++)
5009 *cp++ = 0x0;
5010 }
5011 nd->nd_flag |= ND_USEGSSNAME;
5012 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5013 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5014 if (error != 0)
5015 return (error);
5016 error = nd->nd_repstat;
5017 mbuf_freem(nd->nd_mrep);
5018 return (error);
5019 }
5020
5021 /*
5022 * Do the NFSv4.1 LayoutReturn.
5023 */
5024 int
5025 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5026 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset,
5027 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp,
5028 struct ucred *cred, NFSPROC_T *p, void *stuff)
5029 {
5030 uint32_t *tl;
5031 struct nfsrv_descript nfsd, *nd = &nfsd;
5032 int error, outcnt, i;
5033 uint8_t *cp;
5034
5035 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL);
5036 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
5037 if (reclaim != 0)
5038 *tl++ = newnfs_true;
5039 else
5040 *tl++ = newnfs_false;
5041 *tl++ = txdr_unsigned(layouttype);
5042 *tl++ = txdr_unsigned(iomode);
5043 *tl = txdr_unsigned(layoutreturn);
5044 if (layoutreturn == NFSLAYOUTRETURN_FILE) {
5045 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
5046 NFSX_UNSIGNED);
5047 txdr_hyper(offset, tl);
5048 tl += 2;
5049 txdr_hyper(len, tl);
5050 tl += 2;
5051 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid);
5052 *tl++ = txdr_unsigned(stateidp->seqid);
5053 *tl++ = stateidp->other[0];
5054 *tl++ = stateidp->other[1];
5055 *tl++ = stateidp->other[2];
5056 *tl = txdr_unsigned(layoutcnt);
5057 if (layoutcnt > 0) {
5058 outcnt = NFSM_RNDUP(layoutcnt);
5059 NFSM_BUILD(cp, uint8_t *, outcnt);
5060 NFSBCOPY(layp, cp, layoutcnt);
5061 cp += layoutcnt;
5062 for (i = 0; i < (outcnt - layoutcnt); i++)
5063 *cp++ = 0x0;
5064 }
5065 }
5066 nd->nd_flag |= ND_USEGSSNAME;
5067 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5068 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5069 if (error != 0)
5070 return (error);
5071 if (nd->nd_repstat == 0) {
5072 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5073 if (*tl != 0) {
5074 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
5075 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
5076 stateidp->other[0] = *tl++;
5077 stateidp->other[1] = *tl++;
5078 stateidp->other[2] = *tl;
5079 }
5080 } else
5081 error = nd->nd_repstat;
5082 nfsmout:
5083 mbuf_freem(nd->nd_mrep);
5084 return (error);
5085 }
5086
5087 /*
5088 * Acquire a layout and devinfo, if possible. The caller must have acquired
5089 * a reference count on the nfsclclient structure before calling this.
5090 * Return the layout in lypp with a reference count on it, if successful.
5091 */
5092 static int
5093 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp,
5094 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off,
5095 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
5096 {
5097 struct nfscllayout *lyp;
5098 struct nfsclflayout *flp, *tflp;
5099 struct nfscldevinfo *dip;
5100 struct nfsclflayouthead flh;
5101 int error = 0, islocked, layoutlen, recalled, retonclose;
5102 nfsv4stateid_t stateid;
5103
5104 *lypp = NULL;
5105 /*
5106 * If lyp is returned non-NULL, there will be a refcnt (shared lock)
5107 * on it, iff flp != NULL or a lock (exclusive lock) on it iff
5108 * flp == NULL.
5109 */
5110 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len,
5111 off, &flp, &recalled);
5112 islocked = 0;
5113 if (lyp == NULL || flp == NULL) {
5114 if (recalled != 0)
5115 return (EIO);
5116 LIST_INIT(&flh);
5117 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache -
5118 (NFSX_STATEID + 3 * NFSX_UNSIGNED);
5119 if (lyp == NULL) {
5120 stateid.seqid = 0;
5121 stateid.other[0] = stateidp->other[0];
5122 stateid.other[1] = stateidp->other[1];
5123 stateid.other[2] = stateidp->other[2];
5124 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5125 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX,
5126 (uint64_t)0, layoutlen, &stateid, &retonclose,
5127 &flh, cred, p, NULL);
5128 } else {
5129 islocked = 1;
5130 stateid.seqid = lyp->nfsly_stateid.seqid;
5131 stateid.other[0] = lyp->nfsly_stateid.other[0];
5132 stateid.other[1] = lyp->nfsly_stateid.other[1];
5133 stateid.other[2] = lyp->nfsly_stateid.other[2];
5134 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5135 nfhp->nfh_len, iomode, off, INT64_MAX,
5136 (uint64_t)0, layoutlen, &stateid, &retonclose,
5137 &flh, cred, p, NULL);
5138 }
5139 if (error == 0)
5140 LIST_FOREACH(tflp, &flh, nfsfl_list) {
5141 error = nfscl_adddevinfo(nmp, NULL, tflp);
5142 if (error != 0) {
5143 error = nfsrpc_getdeviceinfo(nmp,
5144 tflp->nfsfl_dev,
5145 NFSLAYOUT_NFSV4_1_FILES,
5146 notifybitsp, &dip, cred, p);
5147 if (error != 0)
5148 break;
5149 error = nfscl_adddevinfo(nmp, dip,
5150 tflp);
5151 if (error != 0)
5152 printf(
5153 "getlayout: cannot add\n");
5154 }
5155 }
5156 if (error == 0) {
5157 /*
5158 * nfscl_layout() always returns with the nfsly_lock
5159 * set to a refcnt (shared lock).
5160 */
5161 error = nfscl_layout(nmp, vp, nfhp->nfh_fh,
5162 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp,
5163 cred, p);
5164 if (error == 0)
5165 *lypp = lyp;
5166 } else if (islocked != 0)
5167 nfsv4_unlock(&lyp->nfsly_lock, 0);
5168 } else
5169 *lypp = lyp;
5170 return (error);
5171 }
5172
5173 /*
5174 * Do a TCP connection plus exchange id and create session.
5175 * If successful, a "struct nfsclds" is linked into the list for the
5176 * mount point and a pointer to it is returned.
5177 */
5178 static int
5179 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp,
5180 struct nfsclds **dspp, NFSPROC_T *p)
5181 {
5182 struct sockaddr_in *msad, *sad, *ssd;
5183 struct sockaddr_in6 *msad6, *sad6, *ssd6;
5184 struct nfsclclient *clp;
5185 struct nfssockreq *nrp;
5186 struct nfsclds *dsp, *tdsp;
5187 int error;
5188 enum nfsclds_state retv;
5189 uint32_t sequenceid;
5190
5191 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
5192 ("nfsrpc_fillsa: NULL nr_cred"));
5193 NFSLOCKCLSTATE();
5194 clp = nmp->nm_clp;
5195 NFSUNLOCKCLSTATE();
5196 if (clp == NULL)
5197 return (EPERM);
5198 if (ssp->ss_family == AF_INET) {
5199 ssd = (struct sockaddr_in *)ssp;
5200 NFSLOCKMNT(nmp);
5201
5202 /*
5203 * Check to see if we already have a session for this
5204 * address that is usable for a DS.
5205 * Note that the MDS's address is in a different place
5206 * than the sessions already acquired for DS's.
5207 */
5208 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam;
5209 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5210 while (tdsp != NULL) {
5211 if (msad != NULL && msad->sin_family == AF_INET &&
5212 ssd->sin_addr.s_addr == msad->sin_addr.s_addr &&
5213 ssd->sin_port == msad->sin_port &&
5214 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5215 *dspp = tdsp;
5216 NFSUNLOCKMNT(nmp);
5217 NFSCL_DEBUG(4, "fnd same addr\n");
5218 return (0);
5219 }
5220 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5221 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5222 msad = (struct sockaddr_in *)
5223 tdsp->nfsclds_sockp->nr_nam;
5224 else
5225 msad = NULL;
5226 }
5227 NFSUNLOCKMNT(nmp);
5228
5229 /* No IP address match, so look for new/trunked one. */
5230 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO);
5231 sad->sin_len = sizeof(*sad);
5232 sad->sin_family = AF_INET;
5233 sad->sin_port = ssd->sin_port;
5234 sad->sin_addr.s_addr = ssd->sin_addr.s_addr;
5235 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5236 nrp->nr_nam = (struct sockaddr *)sad;
5237 } else if (ssp->ss_family == AF_INET6) {
5238 ssd6 = (struct sockaddr_in6 *)ssp;
5239 NFSLOCKMNT(nmp);
5240
5241 /*
5242 * Check to see if we already have a session for this
5243 * address that is usable for a DS.
5244 * Note that the MDS's address is in a different place
5245 * than the sessions already acquired for DS's.
5246 */
5247 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam;
5248 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5249 while (tdsp != NULL) {
5250 if (msad6 != NULL && msad6->sin6_family == AF_INET6 &&
5251 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr,
5252 &msad6->sin6_addr) &&
5253 ssd6->sin6_port == msad6->sin6_port &&
5254 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5255 *dspp = tdsp;
5256 NFSUNLOCKMNT(nmp);
5257 return (0);
5258 }
5259 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5260 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5261 msad6 = (struct sockaddr_in6 *)
5262 tdsp->nfsclds_sockp->nr_nam;
5263 else
5264 msad6 = NULL;
5265 }
5266 NFSUNLOCKMNT(nmp);
5267
5268 /* No IP address match, so look for new/trunked one. */
5269 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO);
5270 sad6->sin6_len = sizeof(*sad6);
5271 sad6->sin6_family = AF_INET6;
5272 sad6->sin6_port = ssd6->sin6_port;
5273 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr,
5274 sizeof(struct in6_addr));
5275 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5276 nrp->nr_nam = (struct sockaddr *)sad6;
5277 } else
5278 return (EPERM);
5279
5280 nrp->nr_sotype = SOCK_STREAM;
5281 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF);
5282 nrp->nr_prog = NFS_PROG;
5283 nrp->nr_vers = NFS_VER4;
5284
5285 /*
5286 * Use the credentials that were used for the mount, which are
5287 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc.
5288 * Ref. counting the credentials with crhold() is probably not
5289 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until
5290 * unmount, but I did it anyhow.
5291 */
5292 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred);
5293 error = newnfs_connect(nmp, nrp, NULL, p, 0);
5294 NFSCL_DEBUG(3, "DS connect=%d\n", error);
5295
5296 /* Now, do the exchangeid and create session. */
5297 if (error == 0)
5298 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS,
5299 &dsp, nrp->nr_cred, p);
5300 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
5301 if (error == 0) {
5302 dsp->nfsclds_sockp = nrp;
5303 NFSLOCKMNT(nmp);
5304 retv = nfscl_getsameserver(nmp, dsp, &tdsp);
5305 NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
5306 if (retv == NFSDSP_USETHISSESSION) {
5307 NFSUNLOCKMNT(nmp);
5308 /*
5309 * If there is already a session for this server,
5310 * use it.
5311 */
5312 (void)newnfs_disconnect(nrp);
5313 nfscl_freenfsclds(dsp);
5314 *dspp = tdsp;
5315 return (0);
5316 }
5317 if (retv == NFSDSP_SEQTHISSESSION)
5318 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid;
5319 else
5320 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid;
5321 NFSUNLOCKMNT(nmp);
5322 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
5323 nrp, sequenceid, 0, nrp->nr_cred, p);
5324 NFSCL_DEBUG(3, "DS createsess=%d\n", error);
5325 } else {
5326 NFSFREECRED(nrp->nr_cred);
5327 NFSFREEMUTEX(&nrp->nr_mtx);
5328 free(nrp->nr_nam, M_SONAME);
5329 free(nrp, M_NFSSOCKREQ);
5330 }
5331 if (error == 0) {
5332 NFSCL_DEBUG(3, "add DS session\n");
5333 /*
5334 * Put it at the end of the list. That way the list
5335 * is ordered by when the entry was added. This matters
5336 * since the one done first is the one that should be
5337 * used for sequencid'ing any subsequent create sessions.
5338 */
5339 NFSLOCKMNT(nmp);
5340 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list);
5341 NFSUNLOCKMNT(nmp);
5342 *dspp = dsp;
5343 } else if (dsp != NULL)
5344 nfscl_freenfsclds(dsp);
5345 return (error);
5346 }
5347
5348 /*
5349 * Do the NFSv4.1 Reclaim Complete.
5350 */
5351 int
5352 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
5353 {
5354 uint32_t *tl;
5355 struct nfsrv_descript nfsd;
5356 struct nfsrv_descript *nd = &nfsd;
5357 int error;
5358
5359 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL);
5360 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
5361 *tl = newnfs_false;
5362 nd->nd_flag |= ND_USEGSSNAME;
5363 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5364 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5365 if (error != 0)
5366 return (error);
5367 error = nd->nd_repstat;
5368 mbuf_freem(nd->nd_mrep);
5369 return (error);
5370 }
5371
5372 /*
5373 * Initialize the slot tables for a session.
5374 */
5375 static void
5376 nfscl_initsessionslots(struct nfsclsession *sep)
5377 {
5378 int i;
5379
5380 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5381 if (sep->nfsess_cbslots[i].nfssl_reply != NULL)
5382 m_freem(sep->nfsess_cbslots[i].nfssl_reply);
5383 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot));
5384 }
5385 for (i = 0; i < 64; i++)
5386 sep->nfsess_slotseq[i] = 0;
5387 sep->nfsess_slots = 0;
5388 }
5389
5390 /*
5391 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS).
5392 */
5393 int
5394 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5395 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p)
5396 {
5397 struct nfsnode *np = VTONFS(vp);
5398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5399 struct nfscllayout *layp;
5400 struct nfscldevinfo *dip;
5401 struct nfsclflayout *rflp;
5402 nfsv4stateid_t stateid;
5403 struct ucred *newcred;
5404 uint64_t lastbyte, len, off, oresid, xfer;
5405 int eof, error, iolaymode, recalled;
5406 void *lckp;
5407
5408 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
5409 (np->n_flag & NNOLAYOUT) != 0)
5410 return (EIO);
5411 /* Now, get a reference cnt on the clientid for this mount. */
5412 if (nfscl_getref(nmp) == 0)
5413 return (EIO);
5414
5415 /* Find an appropriate stateid. */
5416 newcred = NFSNEWCRED(cred);
5417 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
5418 rwaccess, 1, newcred, p, &stateid, &lckp);
5419 if (error != 0) {
5420 NFSFREECRED(newcred);
5421 nfscl_relref(nmp);
5422 return (error);
5423 }
5424 /* Search for a layout for this file. */
5425 off = uiop->uio_offset;
5426 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh,
5427 np->n_fhp->nfh_len, off, &rflp, &recalled);
5428 if (layp == NULL || rflp == NULL) {
5429 if (recalled != 0) {
5430 NFSFREECRED(newcred);
5431 nfscl_relref(nmp);
5432 return (EIO);
5433 }
5434 if (layp != NULL) {
5435 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0);
5436 layp = NULL;
5437 }
5438 /* Try and get a Layout, if it is supported. */
5439 if (rwaccess == NFSV4OPEN_ACCESSWRITE ||
5440 (np->n_flag & NWRITEOPENED) != 0)
5441 iolaymode = NFSLAYOUTIOMODE_RW;
5442 else
5443 iolaymode = NFSLAYOUTIOMODE_READ;
5444 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode,
5445 NULL, &stateid, off, &layp, newcred, p);
5446 if (error != 0) {
5447 NFSLOCKNODE(np);
5448 np->n_flag |= NNOLAYOUT;
5449 NFSUNLOCKNODE(np);
5450 if (lckp != NULL)
5451 nfscl_lockderef(lckp);
5452 NFSFREECRED(newcred);
5453 if (layp != NULL)
5454 nfscl_rellayout(layp, 0);
5455 nfscl_relref(nmp);
5456 return (error);
5457 }
5458 }
5459
5460 /*
5461 * Loop around finding a layout that works for the first part of
5462 * this I/O operation, and then call the function that actually
5463 * does the RPC.
5464 */
5465 eof = 0;
5466 len = (uint64_t)uiop->uio_resid;
5467 while (len > 0 && error == 0 && eof == 0) {
5468 off = uiop->uio_offset;
5469 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp);
5470 if (error == 0) {
5471 oresid = xfer = (uint64_t)uiop->uio_resid;
5472 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off))
5473 xfer = rflp->nfsfl_end - rflp->nfsfl_off;
5474 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev,
5475 rflp->nfsfl_devp);
5476 if (dip != NULL) {
5477 error = nfscl_doflayoutio(vp, uiop, iomode,
5478 must_commit, &eof, &stateid, rwaccess, dip,
5479 layp, rflp, off, xfer, newcred, p);
5480 nfscl_reldevinfo(dip);
5481 lastbyte = off + xfer - 1;
5482 if (error == 0) {
5483 NFSLOCKCLSTATE();
5484 if (lastbyte > layp->nfsly_lastbyte)
5485 layp->nfsly_lastbyte = lastbyte;
5486 NFSUNLOCKCLSTATE();
5487 }
5488 } else
5489 error = EIO;
5490 if (error == 0)
5491 len -= (oresid - (uint64_t)uiop->uio_resid);
5492 }
5493 }
5494 if (lckp != NULL)
5495 nfscl_lockderef(lckp);
5496 NFSFREECRED(newcred);
5497 nfscl_rellayout(layp, 0);
5498 nfscl_relref(nmp);
5499 return (error);
5500 }
5501
5502 /*
5503 * Find a file layout that will handle the first bytes of the requested
5504 * range and return the information from it needed to to the I/O operation.
5505 */
5506 int
5507 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,
5508 struct nfsclflayout **retflpp)
5509 {
5510 struct nfsclflayout *flp, *nflp, *rflp;
5511 uint32_t rw;
5512
5513 rflp = NULL;
5514 rw = rwaccess;
5515 /* For reading, do the Read list first and then the Write list. */
5516 do {
5517 if (rw == NFSV4OPEN_ACCESSREAD)
5518 flp = LIST_FIRST(&lyp->nfsly_flayread);
5519 else
5520 flp = LIST_FIRST(&lyp->nfsly_flayrw);
5521 while (flp != NULL) {
5522 nflp = LIST_NEXT(flp, nfsfl_list);
5523 if (flp->nfsfl_off > off)
5524 break;
5525 if (flp->nfsfl_end > off &&
5526 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end))
5527 rflp = flp;
5528 flp = nflp;
5529 }
5530 if (rw == NFSV4OPEN_ACCESSREAD)
5531 rw = NFSV4OPEN_ACCESSWRITE;
5532 else
5533 rw = 0;
5534 } while (rw != 0);
5535 if (rflp != NULL) {
5536 /* This one covers the most bytes starting at off. */
5537 *retflpp = rflp;
5538 return (0);
5539 }
5540 return (EIO);
5541 }
5542
5543 /*
5544 * Do I/O using an NFSv4.1 file layout.
5545 */
5546 static int
5547 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5548 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
5549 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
5550 uint64_t len, struct ucred *cred, NFSPROC_T *p)
5551 {
5552 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
5553 int commit_thru_mds, error = 0, stripe_index, stripe_pos;
5554 struct nfsnode *np;
5555 struct nfsfh *fhp;
5556 struct nfsclds **dspp;
5557
5558 np = VTONFS(vp);
5559 rel_off = off - flp->nfsfl_patoff;
5560 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff;
5561 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
5562 dp->nfsdi_stripecnt;
5563 transfer = stripe_unit_size - (rel_off % stripe_unit_size);
5564
5565 /* Loop around, doing I/O for each stripe unit. */
5566 while (len > 0 && error == 0) {
5567 stripe_index = nfsfldi_stripeindex(dp, stripe_pos);
5568 dspp = nfsfldi_addr(dp, stripe_index);
5569 if (len > transfer)
5570 xfer = transfer;
5571 else
5572 xfer = len;
5573 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) {
5574 /* Dense layout. */
5575 if (stripe_pos >= flp->nfsfl_fhcnt)
5576 return (EIO);
5577 fhp = flp->nfsfl_fh[stripe_pos];
5578 io_off = (rel_off / (stripe_unit_size *
5579 dp->nfsdi_stripecnt)) * stripe_unit_size +
5580 rel_off % stripe_unit_size;
5581 } else {
5582 /* Sparse layout. */
5583 if (flp->nfsfl_fhcnt > 1) {
5584 if (stripe_index >= flp->nfsfl_fhcnt)
5585 return (EIO);
5586 fhp = flp->nfsfl_fh[stripe_index];
5587 } else if (flp->nfsfl_fhcnt == 1)
5588 fhp = flp->nfsfl_fh[0];
5589 else
5590 fhp = np->n_fhp;
5591 io_off = off;
5592 }
5593 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0)
5594 commit_thru_mds = 1;
5595 else
5596 commit_thru_mds = 0;
5597 if (rwflag == FREAD)
5598 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
5599 io_off, xfer, fhp, cred, p);
5600 else {
5601 error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
5602 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
5603 cred, p);
5604 if (error == 0) {
5605 NFSLOCKCLSTATE();
5606 lyp->nfsly_flags |= NFSLY_WRITTEN;
5607 NFSUNLOCKCLSTATE();
5608 }
5609 }
5610 if (error == 0) {
5611 transfer = stripe_unit_size;
5612 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt;
5613 len -= xfer;
5614 off += xfer;
5615 }
5616 }
5617 return (error);
5618 }
5619
5620 /*
5621 * The actual read RPC done to a DS.
5622 */
5623 static int
5624 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp,
5625 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp,
5626 struct ucred *cred, NFSPROC_T *p)
5627 {
5628 uint32_t *tl;
5629 int error, retlen;
5630 struct nfsrv_descript nfsd;
5631 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5632 struct nfsrv_descript *nd = &nfsd;
5633 struct nfssockreq *nrp;
5634
5635 nd->nd_mrep = NULL;
5636 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5637 NULL, &dsp->nfsclds_sess);
5638 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
5639 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
5640 txdr_hyper(io_off, tl);
5641 *(tl + 2) = txdr_unsigned(len);
5642 nrp = dsp->nfsclds_sockp;
5643 if (nrp == NULL)
5644 /* If NULL, use the MDS socket. */
5645 nrp = &nmp->nm_sockreq;
5646 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5647 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5648 if (error != 0)
5649 return (error);
5650 if (nd->nd_repstat != 0) {
5651 error = nd->nd_repstat;
5652 goto nfsmout;
5653 }
5654 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5655 *eofp = fxdr_unsigned(int, *tl);
5656 NFSM_STRSIZ(retlen, len);
5657 error = nfsm_mbufuio(nd, uiop, retlen);
5658 nfsmout:
5659 if (nd->nd_mrep != NULL)
5660 mbuf_freem(nd->nd_mrep);
5661 return (error);
5662 }
5663
5664 /*
5665 * The actual write RPC done to a DS.
5666 */
5667 static int
5668 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5669 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
5670 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p)
5671 {
5672 uint32_t *tl;
5673 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5674 int error, rlen, commit, committed = NFSWRITE_FILESYNC;
5675 int32_t backup;
5676 struct nfsrv_descript nfsd;
5677 struct nfsrv_descript *nd = &nfsd;
5678 struct nfssockreq *nrp;
5679
5680 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
5681 nd->nd_mrep = NULL;
5682 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5683 NULL, &dsp->nfsclds_sess);
5684 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
5685 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
5686 txdr_hyper(io_off, tl);
5687 tl += 2;
5688 *tl++ = txdr_unsigned(*iomode);
5689 *tl = txdr_unsigned(len);
5690 nfsm_uiombuf(nd, uiop, len);
5691 nrp = dsp->nfsclds_sockp;
5692 if (nrp == NULL)
5693 /* If NULL, use the MDS socket. */
5694 nrp = &nmp->nm_sockreq;
5695 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5696 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5697 if (error != 0)
5698 return (error);
5699 if (nd->nd_repstat != 0) {
5700 /*
5701 * In case the rpc gets retried, roll
5702 * the uio fileds changed by nfsm_uiombuf()
5703 * back.
5704 */
5705 uiop->uio_offset -= len;
5706 uio_uio_resid_add(uiop, len);
5707 uio_iov_base_add(uiop, -len);
5708 uio_iov_len_add(uiop, len);
5709 error = nd->nd_repstat;
5710 } else {
5711 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
5712 rlen = fxdr_unsigned(int, *tl++);
5713 if (rlen == 0) {
5714 error = NFSERR_IO;
5715 goto nfsmout;
5716 } else if (rlen < len) {
5717 backup = len - rlen;
5718 uio_iov_base_add(uiop, -(backup));
5719 uio_iov_len_add(uiop, backup);
5720 uiop->uio_offset -= backup;
5721 uio_uio_resid_add(uiop, backup);
5722 len = rlen;
5723 }
5724 commit = fxdr_unsigned(int, *tl++);
5725
5726 /*
5727 * Return the lowest committment level
5728 * obtained by any of the RPCs.
5729 */
5730 if (committed == NFSWRITE_FILESYNC)
5731 committed = commit;
5732 else if (committed == NFSWRITE_DATASYNC &&
5733 commit == NFSWRITE_UNSTABLE)
5734 committed = commit;
5735 if (commit_thru_mds != 0) {
5736 NFSLOCKMNT(nmp);
5737 if (!NFSHASWRITEVERF(nmp)) {
5738 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
5739 NFSSETWRITEVERF(nmp);
5740 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
5741 *must_commit = 1;
5742 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
5743 }
5744 NFSUNLOCKMNT(nmp);
5745 } else {
5746 NFSLOCKDS(dsp);
5747 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
5748 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5749 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
5750 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
5751 *must_commit = 1;
5752 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5753 }
5754 NFSUNLOCKDS(dsp);
5755 }
5756 }
5757 nfsmout:
5758 if (nd->nd_mrep != NULL)
5759 mbuf_freem(nd->nd_mrep);
5760 *iomode = committed;
5761 if (nd->nd_repstat != 0 && error == 0)
5762 error = nd->nd_repstat;
5763 return (error);
5764 }
5765
5766 /*
5767 * Free up the nfsclds structure.
5768 */
5769 void
5770 nfscl_freenfsclds(struct nfsclds *dsp)
5771 {
5772 int i;
5773
5774 if (dsp == NULL)
5775 return;
5776 if (dsp->nfsclds_sockp != NULL) {
5777 NFSFREECRED(dsp->nfsclds_sockp->nr_cred);
5778 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx);
5779 free(dsp->nfsclds_sockp->nr_nam, M_SONAME);
5780 free(dsp->nfsclds_sockp, M_NFSSOCKREQ);
5781 }
5782 NFSFREEMUTEX(&dsp->nfsclds_mtx);
5783 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx);
5784 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5785 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL)
5786 m_freem(
5787 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply);
5788 }
5789 free(dsp, M_NFSCLDS);
5790 }
5791
5792 static enum nfsclds_state
5793 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp,
5794 struct nfsclds **retdspp)
5795 {
5796 struct nfsclds *dsp, *cur_dsp;
5797
5798 /*
5799 * Search the list of nfsclds structures for one with the same
5800 * server.
5801 */
5802 cur_dsp = NULL;
5803 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
5804 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen &&
5805 dsp->nfsclds_servownlen != 0 &&
5806 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown,
5807 dsp->nfsclds_servownlen)) {
5808 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
5809 TAILQ_FIRST(&nmp->nm_sess), dsp,
5810 dsp->nfsclds_flags);
5811 /* Server major id matches. */
5812 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5813 *retdspp = dsp;
5814 return (NFSDSP_USETHISSESSION);
5815 }
5816
5817 /*
5818 * Note the first match, so it can be used for
5819 * sequence'ing new sessions.
5820 */
5821 if (cur_dsp == NULL)
5822 cur_dsp = dsp;
5823 }
5824 }
5825 if (cur_dsp != NULL) {
5826 *retdspp = cur_dsp;
5827 return (NFSDSP_SEQTHISSESSION);
5828 }
5829 return (NFSDSP_NOTFOUND);
5830 }
5831
5832 #ifdef notyet
5833 /*
5834 * NFS commit rpc to a DS.
5835 */
5836 static int
5837 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
5838 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff)
5839 {
5840 uint32_t *tl;
5841 struct nfsrv_descript nfsd, *nd = &nfsd;
5842 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5843 struct nfssockreq *nrp;
5844 int error;
5845
5846 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5847 NULL, &dsp->nfsclds_sess);
5848 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
5849 txdr_hyper(offset, tl);
5850 tl += 2;
5851 *tl = txdr_unsigned(cnt);
5852 nrp = dsp->nfsclds_sockp;
5853 if (nrp == NULL)
5854 /* If NULL, use the MDS socket. */
5855 nrp = &nmp->nm_sockreq;
5856 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5857 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5858 if (error)
5859 return (error);
5860 if (nd->nd_repstat == 0) {
5861 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
5862 NFSLOCKDS(dsp);
5863 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
5864 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5865 error = NFSERR_STALEWRITEVERF;
5866 }
5867 NFSUNLOCKDS(dsp);
5868 }
5869 nfsmout:
5870 if (error == 0 && nd->nd_repstat != 0)
5871 error = nd->nd_repstat;
5872 mbuf_freem(nd->nd_mrep);
5873 return (error);
5874 }
5875 #endif
5876
Cache object: 38f3f0603be1246dbf1884a5afd9d21d
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