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/10.3/sys/fs/nfsclient/nfs_clrpcops.c 291867 2015-12-05 21:28:54Z 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 #include <sys/sysctl.h>
50
51 SYSCTL_DECL(_vfs_nfs);
52
53 static int nfsignore_eexist = 0;
54 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW,
55 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink");
56
57 /*
58 * Global variables
59 */
60 extern int nfs_numnfscbd;
61 extern struct timeval nfsboottime;
62 extern u_int32_t newnfs_false, newnfs_true;
63 extern nfstype nfsv34_type[9];
64 extern int nfsrv_useacl;
65 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
66 extern int nfscl_debuglevel;
67 NFSCLSTATEMUTEX;
68 int nfstest_outofseq = 0;
69 int nfscl_assumeposixlocks = 1;
70 int nfscl_enablecallb = 0;
71 short nfsv4_cbport = NFSV4_CBPORT;
72 int nfstest_openallsetattr = 0;
73 #endif /* !APPLEKEXT */
74
75 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1))
76
77 /*
78 * nfscl_getsameserver() can return one of three values:
79 * NFSDSP_USETHISSESSION - Use this session for the DS.
80 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new
81 * session.
82 * NFSDSP_NOTFOUND - No matching server was found.
83 */
84 enum nfsclds_state {
85 NFSDSP_USETHISSESSION = 0,
86 NFSDSP_SEQTHISSESSION = 1,
87 NFSDSP_NOTFOUND = 2,
88 };
89
90 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
91 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
92 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
93 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
94 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
95 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
96 void *);
97 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
98 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
99 struct nfsvattr *, struct nfsfh **, int *, int *, void *);
100 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
101 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
102 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
103 int *, void *, int *);
104 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
105 struct nfscllockowner *, u_int64_t, u_int64_t,
106 u_int32_t, struct ucred *, NFSPROC_T *, int);
107 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
108 struct acl *, nfsv4stateid_t *, void *);
109 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int,
110 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **,
111 struct ucred *, NFSPROC_T *);
112 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *,
113 struct nfsclds **, NFSPROC_T *);
114 static void nfscl_initsessionslots(struct nfsclsession *);
115 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *,
116 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
117 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *);
118 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *,
119 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *,
120 NFSPROC_T *);
121 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *,
122 nfsv4stateid_t *, struct nfsclds *, uint64_t, int,
123 struct nfsfh *, int, struct ucred *, NFSPROC_T *);
124 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *,
125 struct nfsclds *, struct nfsclds **);
126 #ifdef notyet
127 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *,
128 struct nfsfh *, struct ucred *, NFSPROC_T *, void *);
129 #endif
130
131 /*
132 * nfs null call from vfs.
133 */
134 APPLESTATIC int
135 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
136 {
137 int error;
138 struct nfsrv_descript nfsd, *nd = &nfsd;
139
140 NFSCL_REQSTART(nd, NFSPROC_NULL, vp);
141 error = nfscl_request(nd, vp, p, cred, NULL);
142 if (nd->nd_repstat && !error)
143 error = nd->nd_repstat;
144 mbuf_freem(nd->nd_mrep);
145 return (error);
146 }
147
148 /*
149 * nfs access rpc op.
150 * For nfs version 3 and 4, use the access rpc to check accessibility. If file
151 * modes are changed on the server, accesses might still fail later.
152 */
153 APPLESTATIC int
154 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
155 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
156 {
157 int error;
158 u_int32_t mode, rmode;
159
160 if (acmode & VREAD)
161 mode = NFSACCESS_READ;
162 else
163 mode = 0;
164 if (vnode_vtype(vp) == VDIR) {
165 if (acmode & VWRITE)
166 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
167 NFSACCESS_DELETE);
168 if (acmode & VEXEC)
169 mode |= NFSACCESS_LOOKUP;
170 } else {
171 if (acmode & VWRITE)
172 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
173 if (acmode & VEXEC)
174 mode |= NFSACCESS_EXECUTE;
175 }
176
177 /*
178 * Now, just call nfsrpc_accessrpc() to do the actual RPC.
179 */
180 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode,
181 NULL);
182
183 /*
184 * The NFS V3 spec does not clarify whether or not
185 * the returned access bits can be a superset of
186 * the ones requested, so...
187 */
188 if (!error && (rmode & mode) != mode)
189 error = EACCES;
190 return (error);
191 }
192
193 /*
194 * The actual rpc, separated out for Darwin.
195 */
196 APPLESTATIC int
197 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
198 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep,
199 void *stuff)
200 {
201 u_int32_t *tl;
202 u_int32_t supported, rmode;
203 int error;
204 struct nfsrv_descript nfsd, *nd = &nfsd;
205 nfsattrbit_t attrbits;
206
207 *attrflagp = 0;
208 supported = mode;
209 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
210 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
211 *tl = txdr_unsigned(mode);
212 if (nd->nd_flag & ND_NFSV4) {
213 /*
214 * And do a Getattr op.
215 */
216 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
217 *tl = txdr_unsigned(NFSV4OP_GETATTR);
218 NFSGETATTR_ATTRBIT(&attrbits);
219 (void) nfsrv_putattrbit(nd, &attrbits);
220 }
221 error = nfscl_request(nd, vp, p, cred, stuff);
222 if (error)
223 return (error);
224 if (nd->nd_flag & ND_NFSV3) {
225 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
226 if (error)
227 goto nfsmout;
228 }
229 if (!nd->nd_repstat) {
230 if (nd->nd_flag & ND_NFSV4) {
231 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
232 supported = fxdr_unsigned(u_int32_t, *tl++);
233 } else {
234 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
235 }
236 rmode = fxdr_unsigned(u_int32_t, *tl);
237 if (nd->nd_flag & ND_NFSV4)
238 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
239
240 /*
241 * It's not obvious what should be done about
242 * unsupported access modes. For now, be paranoid
243 * and clear the unsupported ones.
244 */
245 rmode &= supported;
246 *rmodep = rmode;
247 } else
248 error = nd->nd_repstat;
249 nfsmout:
250 mbuf_freem(nd->nd_mrep);
251 return (error);
252 }
253
254 /*
255 * nfs open rpc
256 */
257 APPLESTATIC int
258 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
259 {
260 struct nfsclopen *op;
261 struct nfscldeleg *dp;
262 struct nfsfh *nfhp;
263 struct nfsnode *np = VTONFS(vp);
264 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
265 u_int32_t mode, clidrev;
266 int ret, newone, error, expireret = 0, retrycnt;
267
268 /*
269 * For NFSv4, Open Ops are only done on Regular Files.
270 */
271 if (vnode_vtype(vp) != VREG)
272 return (0);
273 mode = 0;
274 if (amode & FREAD)
275 mode |= NFSV4OPEN_ACCESSREAD;
276 if (amode & FWRITE)
277 mode |= NFSV4OPEN_ACCESSWRITE;
278 nfhp = np->n_fhp;
279
280 retrycnt = 0;
281 #ifdef notdef
282 { char name[100]; int namel;
283 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
284 bcopy(NFS4NODENAME(np->n_v4), name, namel);
285 name[namel] = '\0';
286 printf("rpcopen p=0x%x name=%s",p->p_pid,name);
287 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
288 else printf(" fhl=0\n");
289 }
290 #endif
291 do {
292 dp = NULL;
293 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
294 cred, p, NULL, &op, &newone, &ret, 1);
295 if (error) {
296 return (error);
297 }
298 if (nmp->nm_clp != NULL)
299 clidrev = nmp->nm_clp->nfsc_clientidrev;
300 else
301 clidrev = 0;
302 if (ret == NFSCLOPEN_DOOPEN) {
303 if (np->n_v4 != NULL) {
304 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data,
305 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
306 np->n_fhp->nfh_len, mode, op,
307 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp,
308 0, 0x0, cred, p, 0, 0);
309 if (dp != NULL) {
310 #ifdef APPLE
311 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
312 #else
313 NFSLOCKNODE(np);
314 np->n_flag &= ~NDELEGMOD;
315 /*
316 * Invalidate the attribute cache, so that
317 * attributes that pre-date the issue of a
318 * delegation are not cached, since the
319 * cached attributes will remain valid while
320 * the delegation is held.
321 */
322 NFSINVALATTRCACHE(np);
323 NFSUNLOCKNODE(np);
324 #endif
325 (void) nfscl_deleg(nmp->nm_mountp,
326 op->nfso_own->nfsow_clp,
327 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
328 }
329 } else {
330 error = EIO;
331 }
332 newnfs_copyincred(cred, &op->nfso_cred);
333 } else if (ret == NFSCLOPEN_SETCRED)
334 /*
335 * This is a new local open on a delegation. It needs
336 * to have credentials so that an open can be done
337 * against the server during recovery.
338 */
339 newnfs_copyincred(cred, &op->nfso_cred);
340
341 /*
342 * nfso_opencnt is the count of how many VOP_OPEN()s have
343 * been done on this Open successfully and a VOP_CLOSE()
344 * is expected for each of these.
345 * If error is non-zero, don't increment it, since the Open
346 * hasn't succeeded yet.
347 */
348 if (!error)
349 op->nfso_opencnt++;
350 nfscl_openrelease(op, error, newone);
351 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
352 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
353 error == NFSERR_BADSESSION) {
354 (void) nfs_catnap(PZERO, error, "nfs_open");
355 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
356 && clidrev != 0) {
357 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
358 retrycnt++;
359 }
360 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
361 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
362 error == NFSERR_BADSESSION ||
363 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
364 expireret == 0 && clidrev != 0 && retrycnt < 4));
365 if (error && retrycnt >= 4)
366 error = EIO;
367 return (error);
368 }
369
370 /*
371 * the actual open rpc
372 */
373 APPLESTATIC int
374 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
375 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
376 u_int8_t *name, int namelen, struct nfscldeleg **dpp,
377 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
378 int syscred, int recursed)
379 {
380 u_int32_t *tl;
381 struct nfsrv_descript nfsd, *nd = &nfsd;
382 struct nfscldeleg *dp, *ndp = NULL;
383 struct nfsvattr nfsva;
384 u_int32_t rflags, deleg;
385 nfsattrbit_t attrbits;
386 int error, ret, acesize, limitby;
387
388 dp = *dpp;
389 *dpp = NULL;
390 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL);
391 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
392 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
393 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
394 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
395 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
396 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
397 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
398 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
399 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
400 if (reclaim) {
401 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
402 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
403 *tl = txdr_unsigned(delegtype);
404 } else {
405 if (dp != NULL) {
406 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
407 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
408 if (NFSHASNFSV4N(nmp))
409 *tl++ = 0;
410 else
411 *tl++ = dp->nfsdl_stateid.seqid;
412 *tl++ = dp->nfsdl_stateid.other[0];
413 *tl++ = dp->nfsdl_stateid.other[1];
414 *tl = dp->nfsdl_stateid.other[2];
415 } else {
416 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
417 }
418 (void) nfsm_strtom(nd, name, namelen);
419 }
420 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
421 *tl = txdr_unsigned(NFSV4OP_GETATTR);
422 NFSZERO_ATTRBIT(&attrbits);
423 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
424 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
425 (void) nfsrv_putattrbit(nd, &attrbits);
426 if (syscred)
427 nd->nd_flag |= ND_USEGSSNAME;
428 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
429 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
430 if (error)
431 return (error);
432 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
433 if (!nd->nd_repstat) {
434 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
435 6 * NFSX_UNSIGNED);
436 op->nfso_stateid.seqid = *tl++;
437 op->nfso_stateid.other[0] = *tl++;
438 op->nfso_stateid.other[1] = *tl++;
439 op->nfso_stateid.other[2] = *tl;
440 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
441 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
442 if (error)
443 goto nfsmout;
444 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
445 deleg = fxdr_unsigned(u_int32_t, *tl);
446 if (deleg == NFSV4OPEN_DELEGATEREAD ||
447 deleg == NFSV4OPEN_DELEGATEWRITE) {
448 if (!(op->nfso_own->nfsow_clp->nfsc_flags &
449 NFSCLFLAGS_FIRSTDELEG))
450 op->nfso_own->nfsow_clp->nfsc_flags |=
451 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
452 MALLOC(ndp, struct nfscldeleg *,
453 sizeof (struct nfscldeleg) + newfhlen,
454 M_NFSCLDELEG, M_WAITOK);
455 LIST_INIT(&ndp->nfsdl_owner);
456 LIST_INIT(&ndp->nfsdl_lock);
457 ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
458 ndp->nfsdl_fhlen = newfhlen;
459 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
460 newnfs_copyincred(cred, &ndp->nfsdl_cred);
461 nfscl_lockinit(&ndp->nfsdl_rwlock);
462 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
463 NFSX_UNSIGNED);
464 ndp->nfsdl_stateid.seqid = *tl++;
465 ndp->nfsdl_stateid.other[0] = *tl++;
466 ndp->nfsdl_stateid.other[1] = *tl++;
467 ndp->nfsdl_stateid.other[2] = *tl++;
468 ret = fxdr_unsigned(int, *tl);
469 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
470 ndp->nfsdl_flags = NFSCLDL_WRITE;
471 /*
472 * Indicates how much the file can grow.
473 */
474 NFSM_DISSECT(tl, u_int32_t *,
475 3 * NFSX_UNSIGNED);
476 limitby = fxdr_unsigned(int, *tl++);
477 switch (limitby) {
478 case NFSV4OPEN_LIMITSIZE:
479 ndp->nfsdl_sizelimit = fxdr_hyper(tl);
480 break;
481 case NFSV4OPEN_LIMITBLOCKS:
482 ndp->nfsdl_sizelimit =
483 fxdr_unsigned(u_int64_t, *tl++);
484 ndp->nfsdl_sizelimit *=
485 fxdr_unsigned(u_int64_t, *tl);
486 break;
487 default:
488 error = NFSERR_BADXDR;
489 goto nfsmout;
490 };
491 } else {
492 ndp->nfsdl_flags = NFSCLDL_READ;
493 }
494 if (ret)
495 ndp->nfsdl_flags |= NFSCLDL_RECALL;
496 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
497 &acesize, p);
498 if (error)
499 goto nfsmout;
500 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
501 error = NFSERR_BADXDR;
502 goto nfsmout;
503 }
504 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
505 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
506 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
507 NULL, NULL, NULL, p, cred);
508 if (error)
509 goto nfsmout;
510 if (ndp != NULL) {
511 ndp->nfsdl_change = nfsva.na_filerev;
512 ndp->nfsdl_modtime = nfsva.na_mtime;
513 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
514 }
515 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
516 do {
517 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
518 cred, p);
519 if (ret == NFSERR_DELAY)
520 (void) nfs_catnap(PZERO, ret, "nfs_open");
521 } while (ret == NFSERR_DELAY);
522 error = ret;
523 }
524 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
525 nfscl_assumeposixlocks)
526 op->nfso_posixlock = 1;
527 else
528 op->nfso_posixlock = 0;
529
530 /*
531 * If the server is handing out delegations, but we didn't
532 * get one because an OpenConfirm was required, try the
533 * Open again, to get a delegation. This is a harmless no-op,
534 * from a server's point of view.
535 */
536 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
537 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
538 && !error && dp == NULL && ndp == NULL && !recursed) {
539 do {
540 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
541 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
542 cred, p, syscred, 1);
543 if (ret == NFSERR_DELAY)
544 (void) nfs_catnap(PZERO, ret, "nfs_open2");
545 } while (ret == NFSERR_DELAY);
546 if (ret) {
547 if (ndp != NULL)
548 FREE((caddr_t)ndp, M_NFSCLDELEG);
549 if (ret == NFSERR_STALECLIENTID ||
550 ret == NFSERR_STALEDONTRECOVER ||
551 ret == NFSERR_BADSESSION)
552 error = ret;
553 }
554 }
555 }
556 if (nd->nd_repstat != 0 && error == 0)
557 error = nd->nd_repstat;
558 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
559 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
560 nfsmout:
561 if (!error)
562 *dpp = ndp;
563 else if (ndp != NULL)
564 FREE((caddr_t)ndp, M_NFSCLDELEG);
565 mbuf_freem(nd->nd_mrep);
566 return (error);
567 }
568
569 /*
570 * open downgrade rpc
571 */
572 APPLESTATIC int
573 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
574 struct ucred *cred, NFSPROC_T *p)
575 {
576 u_int32_t *tl;
577 struct nfsrv_descript nfsd, *nd = &nfsd;
578 int error;
579
580 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
581 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
582 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp))))
583 *tl++ = 0;
584 else
585 *tl++ = op->nfso_stateid.seqid;
586 *tl++ = op->nfso_stateid.other[0];
587 *tl++ = op->nfso_stateid.other[1];
588 *tl++ = op->nfso_stateid.other[2];
589 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
590 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
591 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
592 error = nfscl_request(nd, vp, p, cred, NULL);
593 if (error)
594 return (error);
595 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
596 if (!nd->nd_repstat) {
597 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
598 op->nfso_stateid.seqid = *tl++;
599 op->nfso_stateid.other[0] = *tl++;
600 op->nfso_stateid.other[1] = *tl++;
601 op->nfso_stateid.other[2] = *tl;
602 }
603 if (nd->nd_repstat && error == 0)
604 error = nd->nd_repstat;
605 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
606 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
607 nfsmout:
608 mbuf_freem(nd->nd_mrep);
609 return (error);
610 }
611
612 /*
613 * V4 Close operation.
614 */
615 APPLESTATIC int
616 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
617 {
618 struct nfsclclient *clp;
619 int error;
620
621 if (vnode_vtype(vp) != VREG)
622 return (0);
623 if (doclose)
624 error = nfscl_doclose(vp, &clp, p);
625 else
626 error = nfscl_getclose(vp, &clp);
627 if (error)
628 return (error);
629
630 nfscl_clientrelease(clp);
631 return (0);
632 }
633
634 /*
635 * Close the open.
636 */
637 APPLESTATIC void
638 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
639 {
640 struct nfsrv_descript nfsd, *nd = &nfsd;
641 struct nfscllockowner *lp, *nlp;
642 struct nfscllock *lop, *nlop;
643 struct ucred *tcred;
644 u_int64_t off = 0, len = 0;
645 u_int32_t type = NFSV4LOCKT_READ;
646 int error, do_unlock, trycnt;
647
648 tcred = newnfs_getcred();
649 newnfs_copycred(&op->nfso_cred, tcred);
650 /*
651 * (Theoretically this could be done in the same
652 * compound as the close, but having multiple
653 * sequenced Ops in the same compound might be
654 * too scary for some servers.)
655 */
656 if (op->nfso_posixlock) {
657 off = 0;
658 len = NFS64BITSSET;
659 type = NFSV4LOCKT_READ;
660 }
661
662 /*
663 * Since this function is only called from VOP_INACTIVE(), no
664 * other thread will be manipulating this Open. As such, the
665 * lock lists are not being changed by other threads, so it should
666 * be safe to do this without locking.
667 */
668 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
669 do_unlock = 1;
670 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
671 if (op->nfso_posixlock == 0) {
672 off = lop->nfslo_first;
673 len = lop->nfslo_end - lop->nfslo_first;
674 if (lop->nfslo_type == F_WRLCK)
675 type = NFSV4LOCKT_WRITE;
676 else
677 type = NFSV4LOCKT_READ;
678 }
679 if (do_unlock) {
680 trycnt = 0;
681 do {
682 error = nfsrpc_locku(nd, nmp, lp, off,
683 len, type, tcred, p, 0);
684 if ((nd->nd_repstat == NFSERR_GRACE ||
685 nd->nd_repstat == NFSERR_DELAY) &&
686 error == 0)
687 (void) nfs_catnap(PZERO,
688 (int)nd->nd_repstat,
689 "nfs_close");
690 } while ((nd->nd_repstat == NFSERR_GRACE ||
691 nd->nd_repstat == NFSERR_DELAY) &&
692 error == 0 && trycnt++ < 5);
693 if (op->nfso_posixlock)
694 do_unlock = 0;
695 }
696 nfscl_freelock(lop, 0);
697 }
698 /*
699 * Do a ReleaseLockOwner.
700 * The lock owner name nfsl_owner may be used by other opens for
701 * other files but the lock_owner4 name that nfsrpc_rellockown()
702 * puts on the wire has the file handle for this file appended
703 * to it, so it can be done now.
704 */
705 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
706 lp->nfsl_open->nfso_fhlen, tcred, p);
707 }
708
709 /*
710 * There could be other Opens for different files on the same
711 * OpenOwner, so locking is required.
712 */
713 NFSLOCKCLSTATE();
714 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
715 NFSUNLOCKCLSTATE();
716 do {
717 error = nfscl_tryclose(op, tcred, nmp, p);
718 if (error == NFSERR_GRACE)
719 (void) nfs_catnap(PZERO, error, "nfs_close");
720 } while (error == NFSERR_GRACE);
721 NFSLOCKCLSTATE();
722 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
723
724 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
725 nfscl_freelockowner(lp, 0);
726 nfscl_freeopen(op, 0);
727 NFSUNLOCKCLSTATE();
728 NFSFREECRED(tcred);
729 }
730
731 /*
732 * The actual Close RPC.
733 */
734 APPLESTATIC int
735 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
736 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
737 int syscred)
738 {
739 u_int32_t *tl;
740 int error;
741
742 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
743 op->nfso_fhlen, NULL, NULL);
744 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
745 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
746 if (NFSHASNFSV4N(nmp))
747 *tl++ = 0;
748 else
749 *tl++ = op->nfso_stateid.seqid;
750 *tl++ = op->nfso_stateid.other[0];
751 *tl++ = op->nfso_stateid.other[1];
752 *tl = op->nfso_stateid.other[2];
753 if (syscred)
754 nd->nd_flag |= ND_USEGSSNAME;
755 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
756 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
757 if (error)
758 return (error);
759 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
760 if (nd->nd_repstat == 0)
761 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
762 error = nd->nd_repstat;
763 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
764 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
765 nfsmout:
766 mbuf_freem(nd->nd_mrep);
767 return (error);
768 }
769
770 /*
771 * V4 Open Confirm RPC.
772 */
773 APPLESTATIC int
774 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
775 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
776 {
777 u_int32_t *tl;
778 struct nfsrv_descript nfsd, *nd = &nfsd;
779 struct nfsmount *nmp;
780 int error;
781
782 nmp = VFSTONFS(vnode_mount(vp));
783 if (NFSHASNFSV4N(nmp))
784 return (0); /* No confirmation for NFSv4.1. */
785 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL);
786 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
787 *tl++ = op->nfso_stateid.seqid;
788 *tl++ = op->nfso_stateid.other[0];
789 *tl++ = op->nfso_stateid.other[1];
790 *tl++ = op->nfso_stateid.other[2];
791 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
792 error = nfscl_request(nd, vp, p, cred, NULL);
793 if (error)
794 return (error);
795 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
796 if (!nd->nd_repstat) {
797 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
798 op->nfso_stateid.seqid = *tl++;
799 op->nfso_stateid.other[0] = *tl++;
800 op->nfso_stateid.other[1] = *tl++;
801 op->nfso_stateid.other[2] = *tl;
802 }
803 error = nd->nd_repstat;
804 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
805 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
806 nfsmout:
807 mbuf_freem(nd->nd_mrep);
808 return (error);
809 }
810
811 /*
812 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
813 * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
814 */
815 APPLESTATIC int
816 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
817 struct ucred *cred, NFSPROC_T *p)
818 {
819 u_int32_t *tl;
820 struct nfsrv_descript nfsd;
821 struct nfsrv_descript *nd = &nfsd;
822 nfsattrbit_t attrbits;
823 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
824 u_short port;
825 int error, isinet6 = 0, callblen;
826 nfsquad_t confirm;
827 u_int32_t lease;
828 static u_int32_t rev = 0;
829 struct nfsclds *dsp, *ndsp, *tdsp;
830
831 if (nfsboottime.tv_sec == 0)
832 NFSSETBOOTTIME(nfsboottime);
833 clp->nfsc_rev = rev++;
834 if (NFSHASNFSV4N(nmp)) {
835 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq,
836 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p);
837 NFSCL_DEBUG(1, "aft exch=%d\n", error);
838 if (error == 0) {
839 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
840 &nmp->nm_sockreq,
841 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
842 if (error == 0) {
843 NFSLOCKMNT(nmp);
844 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess,
845 nfsclds_list, ndsp)
846 nfscl_freenfsclds(tdsp);
847 TAILQ_INIT(&nmp->nm_sess);
848 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
849 nfsclds_list);
850 NFSUNLOCKMNT(nmp);
851 } else
852 nfscl_freenfsclds(dsp);
853 NFSCL_DEBUG(1, "aft createsess=%d\n", error);
854 }
855 if (error == 0 && reclaim == 0) {
856 error = nfsrpc_reclaimcomplete(nmp, cred, p);
857 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error);
858 if (error == NFSERR_COMPLETEALREADY ||
859 error == NFSERR_NOTSUPP)
860 /* Ignore this error. */
861 error = 0;
862 }
863 return (error);
864 }
865
866 /*
867 * Allocate a single session structure for NFSv4.0, because some of
868 * the fields are used by NFSv4.0 although it doesn't do a session.
869 */
870 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO);
871 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
872 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF);
873 NFSLOCKMNT(nmp);
874 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list);
875 NFSUNLOCKMNT(nmp);
876
877 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL);
878 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
879 *tl++ = txdr_unsigned(nfsboottime.tv_sec);
880 *tl = txdr_unsigned(clp->nfsc_rev);
881 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
882
883 /*
884 * set up the callback address
885 */
886 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
887 *tl = txdr_unsigned(NFS_CALLBCKPROG);
888 callblen = strlen(nfsv4_callbackaddr);
889 if (callblen == 0)
890 cp = nfscl_getmyip(nmp, &isinet6);
891 if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
892 (callblen > 0 || cp != NULL)) {
893 port = htons(nfsv4_cbport);
894 cp2 = (u_int8_t *)&port;
895 #ifdef INET6
896 if ((callblen > 0 &&
897 strchr(nfsv4_callbackaddr, ':')) || isinet6) {
898 char ip6buf[INET6_ADDRSTRLEN], *ip6add;
899
900 (void) nfsm_strtom(nd, "tcp6", 4);
901 if (callblen == 0) {
902 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
903 ip6add = ip6buf;
904 } else {
905 ip6add = nfsv4_callbackaddr;
906 }
907 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
908 ip6add, cp2[0], cp2[1]);
909 } else
910 #endif
911 {
912 (void) nfsm_strtom(nd, "tcp", 3);
913 if (callblen == 0)
914 snprintf(addr, INET6_ADDRSTRLEN + 9,
915 "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
916 cp[2], cp[3], cp2[0], cp2[1]);
917 else
918 snprintf(addr, INET6_ADDRSTRLEN + 9,
919 "%s.%d.%d", nfsv4_callbackaddr,
920 cp2[0], cp2[1]);
921 }
922 (void) nfsm_strtom(nd, addr, strlen(addr));
923 } else {
924 (void) nfsm_strtom(nd, "tcp", 3);
925 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
926 }
927 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
928 *tl = txdr_unsigned(clp->nfsc_cbident);
929 nd->nd_flag |= ND_USEGSSNAME;
930 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
931 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
932 if (error)
933 return (error);
934 if (nd->nd_repstat == 0) {
935 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
936 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++;
937 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++;
938 confirm.lval[0] = *tl++;
939 confirm.lval[1] = *tl;
940 mbuf_freem(nd->nd_mrep);
941 nd->nd_mrep = NULL;
942
943 /*
944 * and confirm it.
945 */
946 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
947 NULL);
948 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
949 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
950 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
951 *tl++ = confirm.lval[0];
952 *tl = confirm.lval[1];
953 nd->nd_flag |= ND_USEGSSNAME;
954 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
955 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
956 if (error)
957 return (error);
958 mbuf_freem(nd->nd_mrep);
959 nd->nd_mrep = NULL;
960 if (nd->nd_repstat == 0) {
961 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
962 nmp->nm_fhsize, NULL, NULL);
963 NFSZERO_ATTRBIT(&attrbits);
964 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
965 (void) nfsrv_putattrbit(nd, &attrbits);
966 nd->nd_flag |= ND_USEGSSNAME;
967 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
968 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
969 if (error)
970 return (error);
971 if (nd->nd_repstat == 0) {
972 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
973 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
974 if (error)
975 goto nfsmout;
976 clp->nfsc_renew = NFSCL_RENEW(lease);
977 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
978 clp->nfsc_clientidrev++;
979 if (clp->nfsc_clientidrev == 0)
980 clp->nfsc_clientidrev++;
981 }
982 }
983 }
984 error = nd->nd_repstat;
985 nfsmout:
986 mbuf_freem(nd->nd_mrep);
987 return (error);
988 }
989
990 /*
991 * nfs getattr call.
992 */
993 APPLESTATIC int
994 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
995 struct nfsvattr *nap, void *stuff)
996 {
997 struct nfsrv_descript nfsd, *nd = &nfsd;
998 int error;
999 nfsattrbit_t attrbits;
1000
1001 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
1002 if (nd->nd_flag & ND_NFSV4) {
1003 NFSGETATTR_ATTRBIT(&attrbits);
1004 (void) nfsrv_putattrbit(nd, &attrbits);
1005 }
1006 error = nfscl_request(nd, vp, p, cred, stuff);
1007 if (error)
1008 return (error);
1009 if (!nd->nd_repstat)
1010 error = nfsm_loadattr(nd, nap);
1011 else
1012 error = nd->nd_repstat;
1013 mbuf_freem(nd->nd_mrep);
1014 return (error);
1015 }
1016
1017 /*
1018 * nfs getattr call with non-vnode arguemnts.
1019 */
1020 APPLESTATIC int
1021 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
1022 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp,
1023 uint32_t *leasep)
1024 {
1025 struct nfsrv_descript nfsd, *nd = &nfsd;
1026 int error, vers = NFS_VER2;
1027 nfsattrbit_t attrbits;
1028
1029 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL);
1030 if (nd->nd_flag & ND_NFSV4) {
1031 vers = NFS_VER4;
1032 NFSGETATTR_ATTRBIT(&attrbits);
1033 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1034 (void) nfsrv_putattrbit(nd, &attrbits);
1035 } else if (nd->nd_flag & ND_NFSV3) {
1036 vers = NFS_VER3;
1037 }
1038 if (syscred)
1039 nd->nd_flag |= ND_USEGSSNAME;
1040 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1041 NFS_PROG, vers, NULL, 1, xidp, NULL);
1042 if (error)
1043 return (error);
1044 if (nd->nd_repstat == 0) {
1045 if ((nd->nd_flag & ND_NFSV4) != 0)
1046 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
1047 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL,
1048 NULL, NULL);
1049 else
1050 error = nfsm_loadattr(nd, nap);
1051 } else
1052 error = nd->nd_repstat;
1053 mbuf_freem(nd->nd_mrep);
1054 return (error);
1055 }
1056
1057 /*
1058 * Do an nfs setattr operation.
1059 */
1060 APPLESTATIC int
1061 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
1062 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
1063 void *stuff)
1064 {
1065 int error, expireret = 0, openerr, retrycnt;
1066 u_int32_t clidrev = 0, mode;
1067 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1068 struct nfsfh *nfhp;
1069 nfsv4stateid_t stateid;
1070 void *lckp;
1071
1072 if (nmp->nm_clp != NULL)
1073 clidrev = nmp->nm_clp->nfsc_clientidrev;
1074 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
1075 mode = NFSV4OPEN_ACCESSWRITE;
1076 else
1077 mode = NFSV4OPEN_ACCESSREAD;
1078 retrycnt = 0;
1079 do {
1080 lckp = NULL;
1081 openerr = 1;
1082 if (NFSHASNFSV4(nmp)) {
1083 nfhp = VTONFS(vp)->n_fhp;
1084 error = nfscl_getstateid(vp, nfhp->nfh_fh,
1085 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp);
1086 if (error && vnode_vtype(vp) == VREG &&
1087 (mode == NFSV4OPEN_ACCESSWRITE ||
1088 nfstest_openallsetattr)) {
1089 /*
1090 * No Open stateid, so try and open the file
1091 * now.
1092 */
1093 if (mode == NFSV4OPEN_ACCESSWRITE)
1094 openerr = nfsrpc_open(vp, FWRITE, cred,
1095 p);
1096 else
1097 openerr = nfsrpc_open(vp, FREAD, cred,
1098 p);
1099 if (!openerr)
1100 (void) nfscl_getstateid(vp,
1101 nfhp->nfh_fh, nfhp->nfh_len,
1102 mode, 0, cred, p, &stateid, &lckp);
1103 }
1104 }
1105 if (vap != NULL)
1106 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
1107 rnap, attrflagp, stuff);
1108 else
1109 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
1110 stuff);
1111 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
1112 nfscl_initiate_recovery(nmp->nm_clp);
1113 if (lckp != NULL)
1114 nfscl_lockderef(lckp);
1115 if (!openerr)
1116 (void) nfsrpc_close(vp, 0, p);
1117 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1118 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1119 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1120 (void) nfs_catnap(PZERO, error, "nfs_setattr");
1121 } else if ((error == NFSERR_EXPIRED ||
1122 error == NFSERR_BADSTATEID) && clidrev != 0) {
1123 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1124 }
1125 retrycnt++;
1126 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1127 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1128 error == NFSERR_BADSESSION ||
1129 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1130 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1131 expireret == 0 && clidrev != 0 && retrycnt < 4));
1132 if (error && retrycnt >= 4)
1133 error = EIO;
1134 return (error);
1135 }
1136
1137 static int
1138 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1139 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1140 struct nfsvattr *rnap, int *attrflagp, void *stuff)
1141 {
1142 u_int32_t *tl;
1143 struct nfsrv_descript nfsd, *nd = &nfsd;
1144 int error;
1145 nfsattrbit_t attrbits;
1146
1147 *attrflagp = 0;
1148 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1149 if (nd->nd_flag & ND_NFSV4)
1150 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1151 vap->va_type = vnode_vtype(vp);
1152 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1153 if (nd->nd_flag & ND_NFSV3) {
1154 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1155 *tl = newnfs_false;
1156 } else if (nd->nd_flag & ND_NFSV4) {
1157 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1158 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1159 NFSGETATTR_ATTRBIT(&attrbits);
1160 (void) nfsrv_putattrbit(nd, &attrbits);
1161 }
1162 error = nfscl_request(nd, vp, p, cred, stuff);
1163 if (error)
1164 return (error);
1165 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1166 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1167 if ((nd->nd_flag & ND_NFSV4) && !error)
1168 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1169 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1170 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1171 mbuf_freem(nd->nd_mrep);
1172 if (nd->nd_repstat && !error)
1173 error = nd->nd_repstat;
1174 return (error);
1175 }
1176
1177 /*
1178 * nfs lookup rpc
1179 */
1180 APPLESTATIC int
1181 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1182 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1183 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1184 {
1185 u_int32_t *tl;
1186 struct nfsrv_descript nfsd, *nd = &nfsd;
1187 struct nfsmount *nmp;
1188 struct nfsnode *np;
1189 struct nfsfh *nfhp;
1190 nfsattrbit_t attrbits;
1191 int error = 0, lookupp = 0;
1192
1193 *attrflagp = 0;
1194 *dattrflagp = 0;
1195 if (vnode_vtype(dvp) != VDIR)
1196 return (ENOTDIR);
1197 nmp = VFSTONFS(vnode_mount(dvp));
1198 if (len > NFS_MAXNAMLEN)
1199 return (ENAMETOOLONG);
1200 if (NFSHASNFSV4(nmp) && len == 1 &&
1201 name[0] == '.') {
1202 /*
1203 * Just return the current dir's fh.
1204 */
1205 np = VTONFS(dvp);
1206 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1207 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1208 nfhp->nfh_len = np->n_fhp->nfh_len;
1209 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1210 *nfhpp = nfhp;
1211 return (0);
1212 }
1213 if (NFSHASNFSV4(nmp) && len == 2 &&
1214 name[0] == '.' && name[1] == '.') {
1215 lookupp = 1;
1216 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1217 } else {
1218 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1219 (void) nfsm_strtom(nd, name, len);
1220 }
1221 if (nd->nd_flag & ND_NFSV4) {
1222 NFSGETATTR_ATTRBIT(&attrbits);
1223 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1224 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1225 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1226 (void) nfsrv_putattrbit(nd, &attrbits);
1227 }
1228 error = nfscl_request(nd, dvp, p, cred, stuff);
1229 if (error)
1230 return (error);
1231 if (nd->nd_repstat) {
1232 /*
1233 * When an NFSv4 Lookupp returns ENOENT, it means that
1234 * the lookup is at the root of an fs, so return this dir.
1235 */
1236 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1237 np = VTONFS(dvp);
1238 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1239 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1240 nfhp->nfh_len = np->n_fhp->nfh_len;
1241 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1242 *nfhpp = nfhp;
1243 mbuf_freem(nd->nd_mrep);
1244 return (0);
1245 }
1246 if (nd->nd_flag & ND_NFSV3)
1247 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1248 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
1249 ND_NFSV4) {
1250 /* Load the directory attributes. */
1251 error = nfsm_loadattr(nd, dnap);
1252 if (error == 0)
1253 *dattrflagp = 1;
1254 }
1255 goto nfsmout;
1256 }
1257 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1258 /* Load the directory attributes. */
1259 error = nfsm_loadattr(nd, dnap);
1260 if (error != 0)
1261 goto nfsmout;
1262 *dattrflagp = 1;
1263 /* Skip over the Lookup and GetFH operation status values. */
1264 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1265 }
1266 error = nfsm_getfh(nd, nfhpp);
1267 if (error)
1268 goto nfsmout;
1269
1270 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1271 if ((nd->nd_flag & ND_NFSV3) && !error)
1272 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1273 nfsmout:
1274 mbuf_freem(nd->nd_mrep);
1275 if (!error && nd->nd_repstat)
1276 error = nd->nd_repstat;
1277 return (error);
1278 }
1279
1280 /*
1281 * Do a readlink rpc.
1282 */
1283 APPLESTATIC int
1284 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1285 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1286 {
1287 u_int32_t *tl;
1288 struct nfsrv_descript nfsd, *nd = &nfsd;
1289 struct nfsnode *np = VTONFS(vp);
1290 nfsattrbit_t attrbits;
1291 int error, len, cangetattr = 1;
1292
1293 *attrflagp = 0;
1294 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1295 if (nd->nd_flag & ND_NFSV4) {
1296 /*
1297 * And do a Getattr op.
1298 */
1299 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1300 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1301 NFSGETATTR_ATTRBIT(&attrbits);
1302 (void) nfsrv_putattrbit(nd, &attrbits);
1303 }
1304 error = nfscl_request(nd, vp, p, cred, stuff);
1305 if (error)
1306 return (error);
1307 if (nd->nd_flag & ND_NFSV3)
1308 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1309 if (!nd->nd_repstat && !error) {
1310 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1311 /*
1312 * This seems weird to me, but must have been added to
1313 * FreeBSD for some reason. The only thing I can think of
1314 * is that there was/is some server that replies with
1315 * more link data than it should?
1316 */
1317 if (len == NFS_MAXPATHLEN) {
1318 NFSLOCKNODE(np);
1319 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1320 len = np->n_size;
1321 cangetattr = 0;
1322 }
1323 NFSUNLOCKNODE(np);
1324 }
1325 error = nfsm_mbufuio(nd, uiop, len);
1326 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1327 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1328 }
1329 if (nd->nd_repstat && !error)
1330 error = nd->nd_repstat;
1331 nfsmout:
1332 mbuf_freem(nd->nd_mrep);
1333 return (error);
1334 }
1335
1336 /*
1337 * Read operation.
1338 */
1339 APPLESTATIC int
1340 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1341 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1342 {
1343 int error, expireret = 0, retrycnt;
1344 u_int32_t clidrev = 0;
1345 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1346 struct nfsnode *np = VTONFS(vp);
1347 struct ucred *newcred;
1348 struct nfsfh *nfhp = NULL;
1349 nfsv4stateid_t stateid;
1350 void *lckp;
1351
1352 if (nmp->nm_clp != NULL)
1353 clidrev = nmp->nm_clp->nfsc_clientidrev;
1354 newcred = cred;
1355 if (NFSHASNFSV4(nmp)) {
1356 nfhp = np->n_fhp;
1357 newcred = NFSNEWCRED(cred);
1358 }
1359 retrycnt = 0;
1360 do {
1361 lckp = NULL;
1362 if (NFSHASNFSV4(nmp))
1363 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1364 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid,
1365 &lckp);
1366 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1367 attrflagp, stuff);
1368 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
1369 nfscl_initiate_recovery(nmp->nm_clp);
1370 if (lckp != NULL)
1371 nfscl_lockderef(lckp);
1372 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1373 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1374 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1375 (void) nfs_catnap(PZERO, error, "nfs_read");
1376 } else if ((error == NFSERR_EXPIRED ||
1377 error == NFSERR_BADSTATEID) && clidrev != 0) {
1378 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1379 }
1380 retrycnt++;
1381 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1382 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1383 error == NFSERR_BADSESSION ||
1384 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1385 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1386 expireret == 0 && clidrev != 0 && retrycnt < 4));
1387 if (error && retrycnt >= 4)
1388 error = EIO;
1389 if (NFSHASNFSV4(nmp))
1390 NFSFREECRED(newcred);
1391 return (error);
1392 }
1393
1394 /*
1395 * The actual read RPC.
1396 */
1397 static int
1398 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1399 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1400 int *attrflagp, void *stuff)
1401 {
1402 u_int32_t *tl;
1403 int error = 0, len, retlen, tsiz, eof = 0;
1404 struct nfsrv_descript nfsd;
1405 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1406 struct nfsrv_descript *nd = &nfsd;
1407 int rsize;
1408 off_t tmp_off;
1409
1410 *attrflagp = 0;
1411 tsiz = uio_uio_resid(uiop);
1412 tmp_off = uiop->uio_offset + tsiz;
1413 NFSLOCKMNT(nmp);
1414 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1415 NFSUNLOCKMNT(nmp);
1416 return (EFBIG);
1417 }
1418 rsize = nmp->nm_rsize;
1419 NFSUNLOCKMNT(nmp);
1420 nd->nd_mrep = NULL;
1421 while (tsiz > 0) {
1422 *attrflagp = 0;
1423 len = (tsiz > rsize) ? rsize : tsiz;
1424 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1425 if (nd->nd_flag & ND_NFSV4)
1426 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1427 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1428 if (nd->nd_flag & ND_NFSV2) {
1429 *tl++ = txdr_unsigned(uiop->uio_offset);
1430 *tl++ = txdr_unsigned(len);
1431 *tl = 0;
1432 } else {
1433 txdr_hyper(uiop->uio_offset, tl);
1434 *(tl + 2) = txdr_unsigned(len);
1435 }
1436 /*
1437 * Since I can't do a Getattr for NFSv4 for Write, there
1438 * doesn't seem any point in doing one here, either.
1439 * (See the comment in nfsrpc_writerpc() for more info.)
1440 */
1441 error = nfscl_request(nd, vp, p, cred, stuff);
1442 if (error)
1443 return (error);
1444 if (nd->nd_flag & ND_NFSV3) {
1445 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1446 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1447 error = nfsm_loadattr(nd, nap);
1448 if (!error)
1449 *attrflagp = 1;
1450 }
1451 if (nd->nd_repstat || error) {
1452 if (!error)
1453 error = nd->nd_repstat;
1454 goto nfsmout;
1455 }
1456 if (nd->nd_flag & ND_NFSV3) {
1457 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1458 eof = fxdr_unsigned(int, *(tl + 1));
1459 } else if (nd->nd_flag & ND_NFSV4) {
1460 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1461 eof = fxdr_unsigned(int, *tl);
1462 }
1463 NFSM_STRSIZ(retlen, len);
1464 error = nfsm_mbufuio(nd, uiop, retlen);
1465 if (error)
1466 goto nfsmout;
1467 mbuf_freem(nd->nd_mrep);
1468 nd->nd_mrep = NULL;
1469 tsiz -= retlen;
1470 if (!(nd->nd_flag & ND_NFSV2)) {
1471 if (eof || retlen == 0)
1472 tsiz = 0;
1473 } else if (retlen < len)
1474 tsiz = 0;
1475 }
1476 return (0);
1477 nfsmout:
1478 if (nd->nd_mrep != NULL)
1479 mbuf_freem(nd->nd_mrep);
1480 return (error);
1481 }
1482
1483 /*
1484 * nfs write operation
1485 * When called_from_strategy != 0, it should return EIO for an error that
1486 * indicates recovery is in progress, so that the buffer will be left
1487 * dirty and be written back to the server later. If it loops around,
1488 * the recovery thread could get stuck waiting for the buffer and recovery
1489 * will then deadlock.
1490 */
1491 APPLESTATIC int
1492 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
1493 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1494 void *stuff, int called_from_strategy)
1495 {
1496 int error, expireret = 0, retrycnt, nostateid;
1497 u_int32_t clidrev = 0;
1498 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1499 struct nfsnode *np = VTONFS(vp);
1500 struct ucred *newcred;
1501 struct nfsfh *nfhp = NULL;
1502 nfsv4stateid_t stateid;
1503 void *lckp;
1504
1505 *must_commit = 0;
1506 if (nmp->nm_clp != NULL)
1507 clidrev = nmp->nm_clp->nfsc_clientidrev;
1508 newcred = cred;
1509 if (NFSHASNFSV4(nmp)) {
1510 newcred = NFSNEWCRED(cred);
1511 nfhp = np->n_fhp;
1512 }
1513 retrycnt = 0;
1514 do {
1515 lckp = NULL;
1516 nostateid = 0;
1517 if (NFSHASNFSV4(nmp)) {
1518 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1519 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid,
1520 &lckp);
1521 if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1522 stateid.other[2] == 0) {
1523 nostateid = 1;
1524 NFSCL_DEBUG(1, "stateid0 in write\n");
1525 }
1526 }
1527
1528 /*
1529 * If there is no stateid for NFSv4, it means this is an
1530 * extraneous write after close. Basically a poorly
1531 * implemented buffer cache. Just don't do the write.
1532 */
1533 if (nostateid)
1534 error = 0;
1535 else
1536 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
1537 newcred, &stateid, p, nap, attrflagp, stuff);
1538 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION)
1539 nfscl_initiate_recovery(nmp->nm_clp);
1540 if (lckp != NULL)
1541 nfscl_lockderef(lckp);
1542 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1543 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1544 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1545 (void) nfs_catnap(PZERO, error, "nfs_write");
1546 } else if ((error == NFSERR_EXPIRED ||
1547 error == NFSERR_BADSTATEID) && clidrev != 0) {
1548 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1549 }
1550 retrycnt++;
1551 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1552 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1553 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1554 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1555 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1556 expireret == 0 && clidrev != 0 && retrycnt < 4));
1557 if (error != 0 && (retrycnt >= 4 ||
1558 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1559 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1560 error = EIO;
1561 if (NFSHASNFSV4(nmp))
1562 NFSFREECRED(newcred);
1563 return (error);
1564 }
1565
1566 /*
1567 * The actual write RPC.
1568 */
1569 static int
1570 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1571 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
1572 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1573 {
1574 u_int32_t *tl;
1575 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1576 struct nfsnode *np = VTONFS(vp);
1577 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1578 int wccflag = 0, wsize;
1579 int32_t backup;
1580 struct nfsrv_descript nfsd;
1581 struct nfsrv_descript *nd = &nfsd;
1582 nfsattrbit_t attrbits;
1583 off_t tmp_off;
1584
1585 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1586 *attrflagp = 0;
1587 tsiz = uio_uio_resid(uiop);
1588 tmp_off = uiop->uio_offset + tsiz;
1589 NFSLOCKMNT(nmp);
1590 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1591 NFSUNLOCKMNT(nmp);
1592 return (EFBIG);
1593 }
1594 wsize = nmp->nm_wsize;
1595 NFSUNLOCKMNT(nmp);
1596 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */
1597 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */
1598 while (tsiz > 0) {
1599 *attrflagp = 0;
1600 len = (tsiz > wsize) ? wsize : tsiz;
1601 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1602 if (nd->nd_flag & ND_NFSV4) {
1603 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1604 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1605 txdr_hyper(uiop->uio_offset, tl);
1606 tl += 2;
1607 *tl++ = txdr_unsigned(*iomode);
1608 *tl = txdr_unsigned(len);
1609 } else if (nd->nd_flag & ND_NFSV3) {
1610 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1611 txdr_hyper(uiop->uio_offset, tl);
1612 tl += 2;
1613 *tl++ = txdr_unsigned(len);
1614 *tl++ = txdr_unsigned(*iomode);
1615 *tl = txdr_unsigned(len);
1616 } else {
1617 u_int32_t x;
1618
1619 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1620 /*
1621 * Not sure why someone changed this, since the
1622 * RFC clearly states that "beginoffset" and
1623 * "totalcount" are ignored, but it wouldn't
1624 * surprise me if there's a busted server out there.
1625 */
1626 /* Set both "begin" and "current" to non-garbage. */
1627 x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1628 *tl++ = x; /* "begin offset" */
1629 *tl++ = x; /* "current offset" */
1630 x = txdr_unsigned(len);
1631 *tl++ = x; /* total to this offset */
1632 *tl = x; /* size of this write */
1633
1634 }
1635 nfsm_uiombuf(nd, uiop, len);
1636 /*
1637 * Although it is tempting to do a normal Getattr Op in the
1638 * NFSv4 compound, the result can be a nearly hung client
1639 * system if the Getattr asks for Owner and/or OwnerGroup.
1640 * It occurs when the client can't map either the Owner or
1641 * Owner_group name in the Getattr reply to a uid/gid. When
1642 * there is a cache miss, the kernel does an upcall to the
1643 * nfsuserd. Then, it can try and read the local /etc/passwd
1644 * or /etc/group file. It can then block in getnewbuf(),
1645 * waiting for dirty writes to be pushed to the NFS server.
1646 * The only reason this doesn't result in a complete
1647 * deadlock, is that the upcall times out and allows
1648 * the write to complete. However, progress is so slow
1649 * that it might just as well be deadlocked.
1650 * As such, we get the rest of the attributes, but not
1651 * Owner or Owner_group.
1652 * nb: nfscl_loadattrcache() needs to be told that these
1653 * partial attributes from a write rpc are being
1654 * passed in, via a argument flag.
1655 */
1656 if (nd->nd_flag & ND_NFSV4) {
1657 NFSWRITEGETATTR_ATTRBIT(&attrbits);
1658 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1659 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1660 (void) nfsrv_putattrbit(nd, &attrbits);
1661 }
1662 error = nfscl_request(nd, vp, p, cred, stuff);
1663 if (error)
1664 return (error);
1665 if (nd->nd_repstat) {
1666 /*
1667 * In case the rpc gets retried, roll
1668 * the uio fileds changed by nfsm_uiombuf()
1669 * back.
1670 */
1671 uiop->uio_offset -= len;
1672 uio_uio_resid_add(uiop, len);
1673 uio_iov_base_add(uiop, -len);
1674 uio_iov_len_add(uiop, len);
1675 }
1676 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1677 error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1678 &wccflag, stuff);
1679 if (error)
1680 goto nfsmout;
1681 }
1682 if (!nd->nd_repstat) {
1683 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1684 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1685 + NFSX_VERF);
1686 rlen = fxdr_unsigned(int, *tl++);
1687 if (rlen == 0) {
1688 error = NFSERR_IO;
1689 goto nfsmout;
1690 } else if (rlen < len) {
1691 backup = len - rlen;
1692 uio_iov_base_add(uiop, -(backup));
1693 uio_iov_len_add(uiop, backup);
1694 uiop->uio_offset -= backup;
1695 uio_uio_resid_add(uiop, backup);
1696 len = rlen;
1697 }
1698 commit = fxdr_unsigned(int, *tl++);
1699
1700 /*
1701 * Return the lowest committment level
1702 * obtained by any of the RPCs.
1703 */
1704 if (committed == NFSWRITE_FILESYNC)
1705 committed = commit;
1706 else if (committed == NFSWRITE_DATASYNC &&
1707 commit == NFSWRITE_UNSTABLE)
1708 committed = commit;
1709 NFSLOCKMNT(nmp);
1710 if (!NFSHASWRITEVERF(nmp)) {
1711 NFSBCOPY((caddr_t)tl,
1712 (caddr_t)&nmp->nm_verf[0],
1713 NFSX_VERF);
1714 NFSSETWRITEVERF(nmp);
1715 } else if (NFSBCMP(tl, nmp->nm_verf,
1716 NFSX_VERF)) {
1717 *must_commit = 1;
1718 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
1719 }
1720 NFSUNLOCKMNT(nmp);
1721 }
1722 if (nd->nd_flag & ND_NFSV4)
1723 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1724 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1725 error = nfsm_loadattr(nd, nap);
1726 if (!error)
1727 *attrflagp = NFS_LATTR_NOSHRINK;
1728 }
1729 } else {
1730 error = nd->nd_repstat;
1731 }
1732 if (error)
1733 goto nfsmout;
1734 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4));
1735 mbuf_freem(nd->nd_mrep);
1736 nd->nd_mrep = NULL;
1737 tsiz -= len;
1738 }
1739 nfsmout:
1740 if (nd->nd_mrep != NULL)
1741 mbuf_freem(nd->nd_mrep);
1742 *iomode = committed;
1743 if (nd->nd_repstat && !error)
1744 error = nd->nd_repstat;
1745 return (error);
1746 }
1747
1748 /*
1749 * nfs mknod rpc
1750 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1751 * mode set to specify the file type and the size field for rdev.
1752 */
1753 APPLESTATIC int
1754 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1755 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1756 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1757 int *attrflagp, int *dattrflagp, void *dstuff)
1758 {
1759 u_int32_t *tl;
1760 int error = 0;
1761 struct nfsrv_descript nfsd, *nd = &nfsd;
1762 nfsattrbit_t attrbits;
1763
1764 *nfhpp = NULL;
1765 *attrflagp = 0;
1766 *dattrflagp = 0;
1767 if (namelen > NFS_MAXNAMLEN)
1768 return (ENAMETOOLONG);
1769 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1770 if (nd->nd_flag & ND_NFSV4) {
1771 if (vtyp == VBLK || vtyp == VCHR) {
1772 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1773 *tl++ = vtonfsv34_type(vtyp);
1774 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1775 *tl = txdr_unsigned(NFSMINOR(rdev));
1776 } else {
1777 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1778 *tl = vtonfsv34_type(vtyp);
1779 }
1780 }
1781 (void) nfsm_strtom(nd, name, namelen);
1782 if (nd->nd_flag & ND_NFSV3) {
1783 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1784 *tl = vtonfsv34_type(vtyp);
1785 }
1786 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1787 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1788 if ((nd->nd_flag & ND_NFSV3) &&
1789 (vtyp == VCHR || vtyp == VBLK)) {
1790 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1791 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1792 *tl = txdr_unsigned(NFSMINOR(rdev));
1793 }
1794 if (nd->nd_flag & ND_NFSV4) {
1795 NFSGETATTR_ATTRBIT(&attrbits);
1796 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1797 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1798 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1799 (void) nfsrv_putattrbit(nd, &attrbits);
1800 }
1801 if (nd->nd_flag & ND_NFSV2)
1802 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
1803 error = nfscl_request(nd, dvp, p, cred, dstuff);
1804 if (error)
1805 return (error);
1806 if (nd->nd_flag & ND_NFSV4)
1807 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1808 if (!nd->nd_repstat) {
1809 if (nd->nd_flag & ND_NFSV4) {
1810 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1811 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1812 if (error)
1813 goto nfsmout;
1814 }
1815 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1816 if (error)
1817 goto nfsmout;
1818 }
1819 if (nd->nd_flag & ND_NFSV3)
1820 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1821 if (!error && nd->nd_repstat)
1822 error = nd->nd_repstat;
1823 nfsmout:
1824 mbuf_freem(nd->nd_mrep);
1825 return (error);
1826 }
1827
1828 /*
1829 * nfs file create call
1830 * Mostly just call the approriate routine. (I separated out v4, so that
1831 * error recovery wouldn't be as difficult.)
1832 */
1833 APPLESTATIC int
1834 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1835 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1836 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1837 int *attrflagp, int *dattrflagp, void *dstuff)
1838 {
1839 int error = 0, newone, expireret = 0, retrycnt, unlocked;
1840 struct nfsclowner *owp;
1841 struct nfscldeleg *dp;
1842 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
1843 u_int32_t clidrev;
1844
1845 if (NFSHASNFSV4(nmp)) {
1846 retrycnt = 0;
1847 do {
1848 dp = NULL;
1849 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
1850 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
1851 NULL, 1);
1852 if (error)
1853 return (error);
1854 if (nmp->nm_clp != NULL)
1855 clidrev = nmp->nm_clp->nfsc_clientidrev;
1856 else
1857 clidrev = 0;
1858 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
1859 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1860 dstuff, &unlocked);
1861 /*
1862 * There is no need to invalidate cached attributes here,
1863 * since new post-delegation issue attributes are always
1864 * returned by nfsrpc_createv4() and these will update the
1865 * attribute cache.
1866 */
1867 if (dp != NULL)
1868 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
1869 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
1870 nfscl_ownerrelease(owp, error, newone, unlocked);
1871 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1872 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1873 error == NFSERR_BADSESSION) {
1874 (void) nfs_catnap(PZERO, error, "nfs_open");
1875 } else if ((error == NFSERR_EXPIRED ||
1876 error == NFSERR_BADSTATEID) && clidrev != 0) {
1877 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1878 retrycnt++;
1879 }
1880 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1881 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1882 error == NFSERR_BADSESSION ||
1883 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1884 expireret == 0 && clidrev != 0 && retrycnt < 4));
1885 if (error && retrycnt >= 4)
1886 error = EIO;
1887 } else {
1888 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
1889 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1890 dstuff);
1891 }
1892 return (error);
1893 }
1894
1895 /*
1896 * The create rpc for v2 and 3.
1897 */
1898 static int
1899 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1900 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1901 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1902 int *attrflagp, int *dattrflagp, void *dstuff)
1903 {
1904 u_int32_t *tl;
1905 int error = 0;
1906 struct nfsrv_descript nfsd, *nd = &nfsd;
1907
1908 *nfhpp = NULL;
1909 *attrflagp = 0;
1910 *dattrflagp = 0;
1911 if (namelen > NFS_MAXNAMLEN)
1912 return (ENAMETOOLONG);
1913 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1914 (void) nfsm_strtom(nd, name, namelen);
1915 if (nd->nd_flag & ND_NFSV3) {
1916 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1917 if (fmode & O_EXCL) {
1918 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1919 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1920 *tl++ = cverf.lval[0];
1921 *tl = cverf.lval[1];
1922 } else {
1923 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1924 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1925 }
1926 } else {
1927 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
1928 }
1929 error = nfscl_request(nd, dvp, p, cred, dstuff);
1930 if (error)
1931 return (error);
1932 if (nd->nd_repstat == 0) {
1933 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1934 if (error)
1935 goto nfsmout;
1936 }
1937 if (nd->nd_flag & ND_NFSV3)
1938 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1939 if (nd->nd_repstat != 0 && error == 0)
1940 error = nd->nd_repstat;
1941 nfsmout:
1942 mbuf_freem(nd->nd_mrep);
1943 return (error);
1944 }
1945
1946 static int
1947 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1948 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
1949 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
1950 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
1951 int *dattrflagp, void *dstuff, int *unlockedp)
1952 {
1953 u_int32_t *tl;
1954 int error = 0, deleg, newone, ret, acesize, limitby;
1955 struct nfsrv_descript nfsd, *nd = &nfsd;
1956 struct nfsclopen *op;
1957 struct nfscldeleg *dp = NULL;
1958 struct nfsnode *np;
1959 struct nfsfh *nfhp;
1960 nfsattrbit_t attrbits;
1961 nfsv4stateid_t stateid;
1962 u_int32_t rflags;
1963 struct nfsmount *nmp;
1964
1965 nmp = VFSTONFS(dvp->v_mount);
1966 np = VTONFS(dvp);
1967 *unlockedp = 0;
1968 *nfhpp = NULL;
1969 *dpp = NULL;
1970 *attrflagp = 0;
1971 *dattrflagp = 0;
1972 if (namelen > NFS_MAXNAMLEN)
1973 return (ENAMETOOLONG);
1974 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1975 /*
1976 * For V4, this is actually an Open op.
1977 */
1978 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1979 *tl++ = txdr_unsigned(owp->nfsow_seqid);
1980 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
1981 NFSV4OPEN_ACCESSREAD);
1982 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
1983 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
1984 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
1985 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
1986 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1987 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
1988 if (fmode & O_EXCL) {
1989 if (NFSHASNFSV4N(nmp)) {
1990 if (NFSHASSESSPERSIST(nmp)) {
1991 /* Use GUARDED for persistent sessions. */
1992 *tl = txdr_unsigned(NFSCREATE_GUARDED);
1993 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1994 } else {
1995 /* Otherwise, use EXCLUSIVE4_1. */
1996 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
1997 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1998 *tl++ = cverf.lval[0];
1999 *tl = cverf.lval[1];
2000 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2001 }
2002 } else {
2003 /* NFSv4.0 */
2004 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
2005 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2006 *tl++ = cverf.lval[0];
2007 *tl = cverf.lval[1];
2008 }
2009 } else {
2010 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2011 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2012 }
2013 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2014 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
2015 (void) nfsm_strtom(nd, name, namelen);
2016 /* Get the new file's handle and attributes. */
2017 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2018 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2019 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2020 NFSGETATTR_ATTRBIT(&attrbits);
2021 (void) nfsrv_putattrbit(nd, &attrbits);
2022 /* Get the directory's post-op attributes. */
2023 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2024 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2025 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
2026 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2027 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2028 (void) nfsrv_putattrbit(nd, &attrbits);
2029 error = nfscl_request(nd, dvp, p, cred, dstuff);
2030 if (error)
2031 return (error);
2032 NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
2033 if (nd->nd_repstat == 0) {
2034 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2035 6 * NFSX_UNSIGNED);
2036 stateid.seqid = *tl++;
2037 stateid.other[0] = *tl++;
2038 stateid.other[1] = *tl++;
2039 stateid.other[2] = *tl;
2040 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
2041 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2042 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2043 deleg = fxdr_unsigned(int, *tl);
2044 if (deleg == NFSV4OPEN_DELEGATEREAD ||
2045 deleg == NFSV4OPEN_DELEGATEWRITE) {
2046 if (!(owp->nfsow_clp->nfsc_flags &
2047 NFSCLFLAGS_FIRSTDELEG))
2048 owp->nfsow_clp->nfsc_flags |=
2049 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
2050 MALLOC(dp, struct nfscldeleg *,
2051 sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
2052 M_NFSCLDELEG, M_WAITOK);
2053 LIST_INIT(&dp->nfsdl_owner);
2054 LIST_INIT(&dp->nfsdl_lock);
2055 dp->nfsdl_clp = owp->nfsow_clp;
2056 newnfs_copyincred(cred, &dp->nfsdl_cred);
2057 nfscl_lockinit(&dp->nfsdl_rwlock);
2058 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2059 NFSX_UNSIGNED);
2060 dp->nfsdl_stateid.seqid = *tl++;
2061 dp->nfsdl_stateid.other[0] = *tl++;
2062 dp->nfsdl_stateid.other[1] = *tl++;
2063 dp->nfsdl_stateid.other[2] = *tl++;
2064 ret = fxdr_unsigned(int, *tl);
2065 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
2066 dp->nfsdl_flags = NFSCLDL_WRITE;
2067 /*
2068 * Indicates how much the file can grow.
2069 */
2070 NFSM_DISSECT(tl, u_int32_t *,
2071 3 * NFSX_UNSIGNED);
2072 limitby = fxdr_unsigned(int, *tl++);
2073 switch (limitby) {
2074 case NFSV4OPEN_LIMITSIZE:
2075 dp->nfsdl_sizelimit = fxdr_hyper(tl);
2076 break;
2077 case NFSV4OPEN_LIMITBLOCKS:
2078 dp->nfsdl_sizelimit =
2079 fxdr_unsigned(u_int64_t, *tl++);
2080 dp->nfsdl_sizelimit *=
2081 fxdr_unsigned(u_int64_t, *tl);
2082 break;
2083 default:
2084 error = NFSERR_BADXDR;
2085 goto nfsmout;
2086 };
2087 } else {
2088 dp->nfsdl_flags = NFSCLDL_READ;
2089 }
2090 if (ret)
2091 dp->nfsdl_flags |= NFSCLDL_RECALL;
2092 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
2093 &acesize, p);
2094 if (error)
2095 goto nfsmout;
2096 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
2097 error = NFSERR_BADXDR;
2098 goto nfsmout;
2099 }
2100 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2101 if (error)
2102 goto nfsmout;
2103 /* Get rid of the PutFH and Getattr status values. */
2104 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2105 /* Load the directory attributes. */
2106 error = nfsm_loadattr(nd, dnap);
2107 if (error)
2108 goto nfsmout;
2109 *dattrflagp = 1;
2110 if (dp != NULL && *attrflagp) {
2111 dp->nfsdl_change = nnap->na_filerev;
2112 dp->nfsdl_modtime = nnap->na_mtime;
2113 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
2114 }
2115 /*
2116 * We can now complete the Open state.
2117 */
2118 nfhp = *nfhpp;
2119 if (dp != NULL) {
2120 dp->nfsdl_fhlen = nfhp->nfh_len;
2121 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
2122 }
2123 /*
2124 * Get an Open structure that will be
2125 * attached to the OpenOwner, acquired already.
2126 */
2127 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
2128 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
2129 cred, p, NULL, &op, &newone, NULL, 0);
2130 if (error)
2131 goto nfsmout;
2132 op->nfso_stateid = stateid;
2133 newnfs_copyincred(cred, &op->nfso_cred);
2134 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
2135 do {
2136 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
2137 nfhp->nfh_len, op, cred, p);
2138 if (ret == NFSERR_DELAY)
2139 (void) nfs_catnap(PZERO, ret, "nfs_create");
2140 } while (ret == NFSERR_DELAY);
2141 error = ret;
2142 }
2143
2144 /*
2145 * If the server is handing out delegations, but we didn't
2146 * get one because an OpenConfirm was required, try the
2147 * Open again, to get a delegation. This is a harmless no-op,
2148 * from a server's point of view.
2149 */
2150 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
2151 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
2152 !error && dp == NULL) {
2153 do {
2154 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp,
2155 np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
2156 nfhp->nfh_fh, nfhp->nfh_len,
2157 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
2158 name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
2159 if (ret == NFSERR_DELAY)
2160 (void) nfs_catnap(PZERO, ret, "nfs_crt2");
2161 } while (ret == NFSERR_DELAY);
2162 if (ret) {
2163 if (dp != NULL) {
2164 FREE((caddr_t)dp, M_NFSCLDELEG);
2165 dp = NULL;
2166 }
2167 if (ret == NFSERR_STALECLIENTID ||
2168 ret == NFSERR_STALEDONTRECOVER ||
2169 ret == NFSERR_BADSESSION)
2170 error = ret;
2171 }
2172 }
2173 nfscl_openrelease(op, error, newone);
2174 *unlockedp = 1;
2175 }
2176 if (nd->nd_repstat != 0 && error == 0)
2177 error = nd->nd_repstat;
2178 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
2179 nfscl_initiate_recovery(owp->nfsow_clp);
2180 nfsmout:
2181 if (!error)
2182 *dpp = dp;
2183 else if (dp != NULL)
2184 FREE((caddr_t)dp, M_NFSCLDELEG);
2185 mbuf_freem(nd->nd_mrep);
2186 return (error);
2187 }
2188
2189 /*
2190 * Nfs remove rpc
2191 */
2192 APPLESTATIC int
2193 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2194 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2195 void *dstuff)
2196 {
2197 u_int32_t *tl;
2198 struct nfsrv_descript nfsd, *nd = &nfsd;
2199 struct nfsnode *np;
2200 struct nfsmount *nmp;
2201 nfsv4stateid_t dstateid;
2202 int error, ret = 0, i;
2203
2204 *dattrflagp = 0;
2205 if (namelen > NFS_MAXNAMLEN)
2206 return (ENAMETOOLONG);
2207 nmp = VFSTONFS(vnode_mount(dvp));
2208 tryagain:
2209 if (NFSHASNFSV4(nmp) && ret == 0) {
2210 ret = nfscl_removedeleg(vp, p, &dstateid);
2211 if (ret == 1) {
2212 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2213 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2214 NFSX_UNSIGNED);
2215 if (NFSHASNFSV4N(nmp))
2216 *tl++ = 0;
2217 else
2218 *tl++ = dstateid.seqid;
2219 *tl++ = dstateid.other[0];
2220 *tl++ = dstateid.other[1];
2221 *tl++ = dstateid.other[2];
2222 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2223 np = VTONFS(dvp);
2224 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2225 np->n_fhp->nfh_len, 0);
2226 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2227 *tl = txdr_unsigned(NFSV4OP_REMOVE);
2228 }
2229 } else {
2230 ret = 0;
2231 }
2232 if (ret == 0)
2233 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2234 (void) nfsm_strtom(nd, name, namelen);
2235 error = nfscl_request(nd, dvp, p, cred, dstuff);
2236 if (error)
2237 return (error);
2238 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2239 /* For NFSv4, parse out any Delereturn replies. */
2240 if (ret > 0 && nd->nd_repstat != 0 &&
2241 (nd->nd_flag & ND_NOMOREDATA)) {
2242 /*
2243 * If the Delegreturn failed, try again without
2244 * it. The server will Recall, as required.
2245 */
2246 mbuf_freem(nd->nd_mrep);
2247 goto tryagain;
2248 }
2249 for (i = 0; i < (ret * 2); i++) {
2250 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2251 ND_NFSV4) {
2252 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2253 if (*(tl + 1))
2254 nd->nd_flag |= ND_NOMOREDATA;
2255 }
2256 }
2257 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2258 }
2259 if (nd->nd_repstat && !error)
2260 error = nd->nd_repstat;
2261 nfsmout:
2262 mbuf_freem(nd->nd_mrep);
2263 return (error);
2264 }
2265
2266 /*
2267 * Do an nfs rename rpc.
2268 */
2269 APPLESTATIC int
2270 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2271 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2272 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2273 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2274 {
2275 u_int32_t *tl;
2276 struct nfsrv_descript nfsd, *nd = &nfsd;
2277 struct nfsmount *nmp;
2278 struct nfsnode *np;
2279 nfsattrbit_t attrbits;
2280 nfsv4stateid_t fdstateid, tdstateid;
2281 int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2282
2283 *fattrflagp = 0;
2284 *tattrflagp = 0;
2285 nmp = VFSTONFS(vnode_mount(fdvp));
2286 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2287 return (ENAMETOOLONG);
2288 tryagain:
2289 if (NFSHASNFSV4(nmp) && ret == 0) {
2290 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2291 &tdstateid, &gottd, p);
2292 if (gotfd && gottd) {
2293 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2294 } else if (gotfd) {
2295 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2296 } else if (gottd) {
2297 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2298 }
2299 if (gotfd) {
2300 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2301 if (NFSHASNFSV4N(nmp))
2302 *tl++ = 0;
2303 else
2304 *tl++ = fdstateid.seqid;
2305 *tl++ = fdstateid.other[0];
2306 *tl++ = fdstateid.other[1];
2307 *tl = fdstateid.other[2];
2308 if (gottd) {
2309 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2310 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2311 np = VTONFS(tvp);
2312 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2313 np->n_fhp->nfh_len, 0);
2314 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2315 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2316 }
2317 }
2318 if (gottd) {
2319 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2320 if (NFSHASNFSV4N(nmp))
2321 *tl++ = 0;
2322 else
2323 *tl++ = tdstateid.seqid;
2324 *tl++ = tdstateid.other[0];
2325 *tl++ = tdstateid.other[1];
2326 *tl = tdstateid.other[2];
2327 }
2328 if (ret > 0) {
2329 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2330 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2331 np = VTONFS(fdvp);
2332 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2333 np->n_fhp->nfh_len, 0);
2334 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2335 *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2336 }
2337 } else {
2338 ret = 0;
2339 }
2340 if (ret == 0)
2341 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2342 if (nd->nd_flag & ND_NFSV4) {
2343 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2344 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2345 NFSWCCATTR_ATTRBIT(&attrbits);
2346 (void) nfsrv_putattrbit(nd, &attrbits);
2347 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2348 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2349 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2350 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2351 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2352 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2353 (void) nfsrv_putattrbit(nd, &attrbits);
2354 nd->nd_flag |= ND_V4WCCATTR;
2355 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2356 *tl = txdr_unsigned(NFSV4OP_RENAME);
2357 }
2358 (void) nfsm_strtom(nd, fnameptr, fnamelen);
2359 if (!(nd->nd_flag & ND_NFSV4))
2360 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2361 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2362 (void) nfsm_strtom(nd, tnameptr, tnamelen);
2363 error = nfscl_request(nd, fdvp, p, cred, fstuff);
2364 if (error)
2365 return (error);
2366 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2367 /* For NFSv4, parse out any Delereturn replies. */
2368 if (ret > 0 && nd->nd_repstat != 0 &&
2369 (nd->nd_flag & ND_NOMOREDATA)) {
2370 /*
2371 * If the Delegreturn failed, try again without
2372 * it. The server will Recall, as required.
2373 */
2374 mbuf_freem(nd->nd_mrep);
2375 goto tryagain;
2376 }
2377 for (i = 0; i < (ret * 2); i++) {
2378 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2379 ND_NFSV4) {
2380 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2381 if (*(tl + 1)) {
2382 if (i == 0 && ret > 1) {
2383 /*
2384 * If the Delegreturn failed, try again
2385 * without it. The server will Recall, as
2386 * required.
2387 * If ret > 1, the first iteration of this
2388 * loop is the second DelegReturn result.
2389 */
2390 mbuf_freem(nd->nd_mrep);
2391 goto tryagain;
2392 } else {
2393 nd->nd_flag |= ND_NOMOREDATA;
2394 }
2395 }
2396 }
2397 }
2398 /* Now, the first wcc attribute reply. */
2399 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2400 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2401 if (*(tl + 1))
2402 nd->nd_flag |= ND_NOMOREDATA;
2403 }
2404 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2405 fstuff);
2406 /* and the second wcc attribute reply. */
2407 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2408 !error) {
2409 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2410 if (*(tl + 1))
2411 nd->nd_flag |= ND_NOMOREDATA;
2412 }
2413 if (!error)
2414 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2415 NULL, tstuff);
2416 }
2417 if (nd->nd_repstat && !error)
2418 error = nd->nd_repstat;
2419 nfsmout:
2420 mbuf_freem(nd->nd_mrep);
2421 return (error);
2422 }
2423
2424 /*
2425 * nfs hard link create rpc
2426 */
2427 APPLESTATIC int
2428 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2429 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2430 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2431 {
2432 u_int32_t *tl;
2433 struct nfsrv_descript nfsd, *nd = &nfsd;
2434 nfsattrbit_t attrbits;
2435 int error = 0;
2436
2437 *attrflagp = 0;
2438 *dattrflagp = 0;
2439 if (namelen > NFS_MAXNAMLEN)
2440 return (ENAMETOOLONG);
2441 NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2442 if (nd->nd_flag & ND_NFSV4) {
2443 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2444 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2445 }
2446 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2447 VTONFS(dvp)->n_fhp->nfh_len, 0);
2448 if (nd->nd_flag & ND_NFSV4) {
2449 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2450 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2451 NFSWCCATTR_ATTRBIT(&attrbits);
2452 (void) nfsrv_putattrbit(nd, &attrbits);
2453 nd->nd_flag |= ND_V4WCCATTR;
2454 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2455 *tl = txdr_unsigned(NFSV4OP_LINK);
2456 }
2457 (void) nfsm_strtom(nd, name, namelen);
2458 error = nfscl_request(nd, vp, p, cred, dstuff);
2459 if (error)
2460 return (error);
2461 if (nd->nd_flag & ND_NFSV3) {
2462 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2463 if (!error)
2464 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2465 NULL, dstuff);
2466 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2467 /*
2468 * First, parse out the PutFH and Getattr result.
2469 */
2470 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2471 if (!(*(tl + 1)))
2472 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2473 if (*(tl + 1))
2474 nd->nd_flag |= ND_NOMOREDATA;
2475 /*
2476 * Get the pre-op attributes.
2477 */
2478 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2479 }
2480 if (nd->nd_repstat && !error)
2481 error = nd->nd_repstat;
2482 nfsmout:
2483 mbuf_freem(nd->nd_mrep);
2484 return (error);
2485 }
2486
2487 /*
2488 * nfs symbolic link create rpc
2489 */
2490 APPLESTATIC int
2491 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target,
2492 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2493 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2494 int *dattrflagp, void *dstuff)
2495 {
2496 u_int32_t *tl;
2497 struct nfsrv_descript nfsd, *nd = &nfsd;
2498 struct nfsmount *nmp;
2499 int slen, error = 0;
2500
2501 *nfhpp = NULL;
2502 *attrflagp = 0;
2503 *dattrflagp = 0;
2504 nmp = VFSTONFS(vnode_mount(dvp));
2505 slen = strlen(target);
2506 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2507 return (ENAMETOOLONG);
2508 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2509 if (nd->nd_flag & ND_NFSV4) {
2510 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2511 *tl = txdr_unsigned(NFLNK);
2512 (void) nfsm_strtom(nd, target, slen);
2513 }
2514 (void) nfsm_strtom(nd, name, namelen);
2515 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2516 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2517 if (!(nd->nd_flag & ND_NFSV4))
2518 (void) nfsm_strtom(nd, target, slen);
2519 if (nd->nd_flag & ND_NFSV2)
2520 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2521 error = nfscl_request(nd, dvp, p, cred, dstuff);
2522 if (error)
2523 return (error);
2524 if (nd->nd_flag & ND_NFSV4)
2525 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2526 if ((nd->nd_flag & ND_NFSV3) && !error) {
2527 if (!nd->nd_repstat)
2528 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2529 if (!error)
2530 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2531 NULL, dstuff);
2532 }
2533 if (nd->nd_repstat && !error)
2534 error = nd->nd_repstat;
2535 mbuf_freem(nd->nd_mrep);
2536 /*
2537 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2538 * Only do this if vfs.nfs.ignore_eexist is set.
2539 * Never do this for NFSv4.1 or later minor versions, since sessions
2540 * should guarantee "exactly once" RPC semantics.
2541 */
2542 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2543 nmp->nm_minorvers == 0))
2544 error = 0;
2545 return (error);
2546 }
2547
2548 /*
2549 * nfs make dir rpc
2550 */
2551 APPLESTATIC int
2552 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2553 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2554 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2555 int *dattrflagp, void *dstuff)
2556 {
2557 u_int32_t *tl;
2558 struct nfsrv_descript nfsd, *nd = &nfsd;
2559 nfsattrbit_t attrbits;
2560 int error = 0;
2561 struct nfsfh *fhp;
2562 struct nfsmount *nmp;
2563
2564 *nfhpp = NULL;
2565 *attrflagp = 0;
2566 *dattrflagp = 0;
2567 nmp = VFSTONFS(vnode_mount(dvp));
2568 fhp = VTONFS(dvp)->n_fhp;
2569 if (namelen > NFS_MAXNAMLEN)
2570 return (ENAMETOOLONG);
2571 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2572 if (nd->nd_flag & ND_NFSV4) {
2573 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2574 *tl = txdr_unsigned(NFDIR);
2575 }
2576 (void) nfsm_strtom(nd, name, namelen);
2577 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2578 if (nd->nd_flag & ND_NFSV4) {
2579 NFSGETATTR_ATTRBIT(&attrbits);
2580 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2581 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2582 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2583 (void) nfsrv_putattrbit(nd, &attrbits);
2584 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2585 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2586 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0);
2587 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2588 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2589 (void) nfsrv_putattrbit(nd, &attrbits);
2590 }
2591 error = nfscl_request(nd, dvp, p, cred, dstuff);
2592 if (error)
2593 return (error);
2594 if (nd->nd_flag & ND_NFSV4)
2595 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2596 if (!nd->nd_repstat && !error) {
2597 if (nd->nd_flag & ND_NFSV4) {
2598 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2599 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2600 }
2601 if (!error)
2602 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2603 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) {
2604 /* Get rid of the PutFH and Getattr status values. */
2605 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2606 /* Load the directory attributes. */
2607 error = nfsm_loadattr(nd, dnap);
2608 if (error == 0)
2609 *dattrflagp = 1;
2610 }
2611 }
2612 if ((nd->nd_flag & ND_NFSV3) && !error)
2613 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2614 if (nd->nd_repstat && !error)
2615 error = nd->nd_repstat;
2616 nfsmout:
2617 mbuf_freem(nd->nd_mrep);
2618 /*
2619 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2620 * Only do this if vfs.nfs.ignore_eexist is set.
2621 * Never do this for NFSv4.1 or later minor versions, since sessions
2622 * should guarantee "exactly once" RPC semantics.
2623 */
2624 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2625 nmp->nm_minorvers == 0))
2626 error = 0;
2627 return (error);
2628 }
2629
2630 /*
2631 * nfs remove directory call
2632 */
2633 APPLESTATIC int
2634 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2635 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2636 {
2637 struct nfsrv_descript nfsd, *nd = &nfsd;
2638 int error = 0;
2639
2640 *dattrflagp = 0;
2641 if (namelen > NFS_MAXNAMLEN)
2642 return (ENAMETOOLONG);
2643 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2644 (void) nfsm_strtom(nd, name, namelen);
2645 error = nfscl_request(nd, dvp, p, cred, dstuff);
2646 if (error)
2647 return (error);
2648 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2649 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2650 if (nd->nd_repstat && !error)
2651 error = nd->nd_repstat;
2652 mbuf_freem(nd->nd_mrep);
2653 /*
2654 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2655 */
2656 if (error == ENOENT)
2657 error = 0;
2658 return (error);
2659 }
2660
2661 /*
2662 * Readdir rpc.
2663 * Always returns with either uio_resid unchanged, if you are at the
2664 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2665 * filled in.
2666 * I felt this would allow caching of directory blocks more easily
2667 * than returning a pertially filled block.
2668 * Directory offset cookies:
2669 * Oh my, what to do with them...
2670 * I can think of three ways to deal with them:
2671 * 1 - have the layer above these RPCs maintain a map between logical
2672 * directory byte offsets and the NFS directory offset cookies
2673 * 2 - pass the opaque directory offset cookies up into userland
2674 * and let the libc functions deal with them, via the system call
2675 * 3 - return them to userland in the "struct dirent", so future versions
2676 * of libc can use them and do whatever is necessary to amke things work
2677 * above these rpc calls, in the meantime
2678 * For now, I do #3 by "hiding" the directory offset cookies after the
2679 * d_name field in struct dirent. This is space inside d_reclen that
2680 * will be ignored by anything that doesn't know about them.
2681 * The directory offset cookies are filled in as the last 8 bytes of
2682 * each directory entry, after d_name. Someday, the userland libc
2683 * functions may be able to use these. In the meantime, it satisfies
2684 * OpenBSD's requirements for cookies being returned.
2685 * If expects the directory offset cookie for the read to be in uio_offset
2686 * and returns the one for the next entry after this directory block in
2687 * there, as well.
2688 */
2689 APPLESTATIC int
2690 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2691 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2692 int *eofp, void *stuff)
2693 {
2694 int len, left;
2695 struct dirent *dp = NULL;
2696 u_int32_t *tl;
2697 nfsquad_t cookie, ncookie;
2698 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2699 struct nfsnode *dnp = VTONFS(vp);
2700 struct nfsvattr nfsva;
2701 struct nfsrv_descript nfsd, *nd = &nfsd;
2702 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2703 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2704 long dotfileid, dotdotfileid = 0;
2705 u_int32_t fakefileno = 0xffffffff, rderr;
2706 char *cp;
2707 nfsattrbit_t attrbits, dattrbits;
2708 u_int32_t *tl2 = NULL;
2709 size_t tresid;
2710
2711 KASSERT(uiop->uio_iovcnt == 1 &&
2712 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2713 ("nfs readdirrpc bad uio"));
2714
2715 /*
2716 * There is no point in reading a lot more than uio_resid, however
2717 * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2718 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2719 * will never make readsize > nm_readdirsize.
2720 */
2721 readsize = nmp->nm_readdirsize;
2722 if (readsize > uio_uio_resid(uiop))
2723 readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
2724
2725 *attrflagp = 0;
2726 if (eofp)
2727 *eofp = 0;
2728 tresid = uio_uio_resid(uiop);
2729 cookie.lval[0] = cookiep->nfsuquad[0];
2730 cookie.lval[1] = cookiep->nfsuquad[1];
2731 nd->nd_mrep = NULL;
2732
2733 /*
2734 * For NFSv4, first create the "." and ".." entries.
2735 */
2736 if (NFSHASNFSV4(nmp)) {
2737 reqsize = 6 * NFSX_UNSIGNED;
2738 NFSGETATTR_ATTRBIT(&dattrbits);
2739 NFSZERO_ATTRBIT(&attrbits);
2740 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2741 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2742 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2743 NFSATTRBIT_MOUNTEDONFILEID)) {
2744 NFSSETBIT_ATTRBIT(&attrbits,
2745 NFSATTRBIT_MOUNTEDONFILEID);
2746 gotmnton = 1;
2747 } else {
2748 /*
2749 * Must fake it. Use the fileno, except when the
2750 * fsid is != to that of the directory. For that
2751 * case, generate a fake fileno that is not the same.
2752 */
2753 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2754 gotmnton = 0;
2755 }
2756
2757 /*
2758 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2759 */
2760 if (uiop->uio_offset == 0) {
2761 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2762 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2763 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2764 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2765 (void) nfsrv_putattrbit(nd, &attrbits);
2766 error = nfscl_request(nd, vp, p, cred, stuff);
2767 if (error)
2768 return (error);
2769 dotfileid = 0; /* Fake out the compiler. */
2770 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
2771 error = nfsm_loadattr(nd, &nfsva);
2772 if (error != 0)
2773 goto nfsmout;
2774 dotfileid = nfsva.na_fileid;
2775 }
2776 if (nd->nd_repstat == 0) {
2777 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2778 len = fxdr_unsigned(int, *(tl + 4));
2779 if (len > 0 && len <= NFSX_V4FHMAX)
2780 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2781 else
2782 error = EPERM;
2783 if (!error) {
2784 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2785 nfsva.na_mntonfileno = 0xffffffff;
2786 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2787 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2788 NULL, NULL, NULL, p, cred);
2789 if (error) {
2790 dotdotfileid = dotfileid;
2791 } else if (gotmnton) {
2792 if (nfsva.na_mntonfileno != 0xffffffff)
2793 dotdotfileid = nfsva.na_mntonfileno;
2794 else
2795 dotdotfileid = nfsva.na_fileid;
2796 } else if (nfsva.na_filesid[0] ==
2797 dnp->n_vattr.na_filesid[0] &&
2798 nfsva.na_filesid[1] ==
2799 dnp->n_vattr.na_filesid[1]) {
2800 dotdotfileid = nfsva.na_fileid;
2801 } else {
2802 do {
2803 fakefileno--;
2804 } while (fakefileno ==
2805 nfsva.na_fileid);
2806 dotdotfileid = fakefileno;
2807 }
2808 }
2809 } else if (nd->nd_repstat == NFSERR_NOENT) {
2810 /*
2811 * Lookupp returns NFSERR_NOENT when we are
2812 * at the root, so just use the current dir.
2813 */
2814 nd->nd_repstat = 0;
2815 dotdotfileid = dotfileid;
2816 } else {
2817 error = nd->nd_repstat;
2818 }
2819 mbuf_freem(nd->nd_mrep);
2820 if (error)
2821 return (error);
2822 nd->nd_mrep = NULL;
2823 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2824 dp->d_type = DT_DIR;
2825 dp->d_fileno = dotfileid;
2826 dp->d_namlen = 1;
2827 dp->d_name[0] = '.';
2828 dp->d_name[1] = '\0';
2829 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2830 /*
2831 * Just make these offset cookie 0.
2832 */
2833 tl = (u_int32_t *)&dp->d_name[4];
2834 *tl++ = 0;
2835 *tl = 0;
2836 blksiz += dp->d_reclen;
2837 uio_uio_resid_add(uiop, -(dp->d_reclen));
2838 uiop->uio_offset += dp->d_reclen;
2839 uio_iov_base_add(uiop, dp->d_reclen);
2840 uio_iov_len_add(uiop, -(dp->d_reclen));
2841 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2842 dp->d_type = DT_DIR;
2843 dp->d_fileno = dotdotfileid;
2844 dp->d_namlen = 2;
2845 dp->d_name[0] = '.';
2846 dp->d_name[1] = '.';
2847 dp->d_name[2] = '\0';
2848 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2849 /*
2850 * Just make these offset cookie 0.
2851 */
2852 tl = (u_int32_t *)&dp->d_name[4];
2853 *tl++ = 0;
2854 *tl = 0;
2855 blksiz += dp->d_reclen;
2856 uio_uio_resid_add(uiop, -(dp->d_reclen));
2857 uiop->uio_offset += dp->d_reclen;
2858 uio_iov_base_add(uiop, dp->d_reclen);
2859 uio_iov_len_add(uiop, -(dp->d_reclen));
2860 }
2861 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
2862 } else {
2863 reqsize = 5 * NFSX_UNSIGNED;
2864 }
2865
2866
2867 /*
2868 * Loop around doing readdir rpc's of size readsize.
2869 * The stopping criteria is EOF or buffer full.
2870 */
2871 while (more_dirs && bigenough) {
2872 *attrflagp = 0;
2873 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
2874 if (nd->nd_flag & ND_NFSV2) {
2875 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2876 *tl++ = cookie.lval[1];
2877 *tl = txdr_unsigned(readsize);
2878 } else {
2879 NFSM_BUILD(tl, u_int32_t *, reqsize);
2880 *tl++ = cookie.lval[0];
2881 *tl++ = cookie.lval[1];
2882 if (cookie.qval == 0) {
2883 *tl++ = 0;
2884 *tl++ = 0;
2885 } else {
2886 NFSLOCKNODE(dnp);
2887 *tl++ = dnp->n_cookieverf.nfsuquad[0];
2888 *tl++ = dnp->n_cookieverf.nfsuquad[1];
2889 NFSUNLOCKNODE(dnp);
2890 }
2891 if (nd->nd_flag & ND_NFSV4) {
2892 *tl++ = txdr_unsigned(readsize);
2893 *tl = txdr_unsigned(readsize);
2894 (void) nfsrv_putattrbit(nd, &attrbits);
2895 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2896 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2897 (void) nfsrv_putattrbit(nd, &dattrbits);
2898 } else {
2899 *tl = txdr_unsigned(readsize);
2900 }
2901 }
2902 error = nfscl_request(nd, vp, p, cred, stuff);
2903 if (error)
2904 return (error);
2905 if (!(nd->nd_flag & ND_NFSV2)) {
2906 if (nd->nd_flag & ND_NFSV3)
2907 error = nfscl_postop_attr(nd, nap, attrflagp,
2908 stuff);
2909 if (!nd->nd_repstat && !error) {
2910 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2911 NFSLOCKNODE(dnp);
2912 dnp->n_cookieverf.nfsuquad[0] = *tl++;
2913 dnp->n_cookieverf.nfsuquad[1] = *tl;
2914 NFSUNLOCKNODE(dnp);
2915 }
2916 }
2917 if (nd->nd_repstat || error) {
2918 if (!error)
2919 error = nd->nd_repstat;
2920 goto nfsmout;
2921 }
2922 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2923 more_dirs = fxdr_unsigned(int, *tl);
2924 if (!more_dirs)
2925 tryformoredirs = 0;
2926
2927 /* loop thru the dir entries, doctoring them to 4bsd form */
2928 while (more_dirs && bigenough) {
2929 if (nd->nd_flag & ND_NFSV4) {
2930 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2931 ncookie.lval[0] = *tl++;
2932 ncookie.lval[1] = *tl++;
2933 len = fxdr_unsigned(int, *tl);
2934 } else if (nd->nd_flag & ND_NFSV3) {
2935 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2936 nfsva.na_fileid = fxdr_hyper(tl);
2937 tl += 2;
2938 len = fxdr_unsigned(int, *tl);
2939 } else {
2940 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2941 nfsva.na_fileid =
2942 fxdr_unsigned(long, *tl++);
2943 len = fxdr_unsigned(int, *tl);
2944 }
2945 if (len <= 0 || len > NFS_MAXNAMLEN) {
2946 error = EBADRPC;
2947 goto nfsmout;
2948 }
2949 tlen = NFSM_RNDUP(len);
2950 if (tlen == len)
2951 tlen += 4; /* To ensure null termination */
2952 left = DIRBLKSIZ - blksiz;
2953 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) {
2954 dp->d_reclen += left;
2955 uio_iov_base_add(uiop, left);
2956 uio_iov_len_add(uiop, -(left));
2957 uio_uio_resid_add(uiop, -(left));
2958 uiop->uio_offset += left;
2959 blksiz = 0;
2960 }
2961 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
2962 bigenough = 0;
2963 if (bigenough) {
2964 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2965 dp->d_namlen = len;
2966 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
2967 dp->d_type = DT_UNKNOWN;
2968 blksiz += dp->d_reclen;
2969 if (blksiz == DIRBLKSIZ)
2970 blksiz = 0;
2971 uio_uio_resid_add(uiop, -(DIRHDSIZ));
2972 uiop->uio_offset += DIRHDSIZ;
2973 uio_iov_base_add(uiop, DIRHDSIZ);
2974 uio_iov_len_add(uiop, -(DIRHDSIZ));
2975 error = nfsm_mbufuio(nd, uiop, len);
2976 if (error)
2977 goto nfsmout;
2978 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
2979 tlen -= len;
2980 *cp = '\0'; /* null terminate */
2981 cp += tlen; /* points to cookie storage */
2982 tl2 = (u_int32_t *)cp;
2983 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
2984 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
2985 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
2986 uiop->uio_offset += (tlen + NFSX_HYPER);
2987 } else {
2988 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2989 if (error)
2990 goto nfsmout;
2991 }
2992 if (nd->nd_flag & ND_NFSV4) {
2993 rderr = 0;
2994 nfsva.na_mntonfileno = 0xffffffff;
2995 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2996 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2997 NULL, NULL, &rderr, p, cred);
2998 if (error)
2999 goto nfsmout;
3000 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3001 } else if (nd->nd_flag & ND_NFSV3) {
3002 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3003 ncookie.lval[0] = *tl++;
3004 ncookie.lval[1] = *tl++;
3005 } else {
3006 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3007 ncookie.lval[0] = 0;
3008 ncookie.lval[1] = *tl++;
3009 }
3010 if (bigenough) {
3011 if (nd->nd_flag & ND_NFSV4) {
3012 if (rderr) {
3013 dp->d_fileno = 0;
3014 } else {
3015 if (gotmnton) {
3016 if (nfsva.na_mntonfileno != 0xffffffff)
3017 dp->d_fileno = nfsva.na_mntonfileno;
3018 else
3019 dp->d_fileno = nfsva.na_fileid;
3020 } else if (nfsva.na_filesid[0] ==
3021 dnp->n_vattr.na_filesid[0] &&
3022 nfsva.na_filesid[1] ==
3023 dnp->n_vattr.na_filesid[1]) {
3024 dp->d_fileno = nfsva.na_fileid;
3025 } else {
3026 do {
3027 fakefileno--;
3028 } while (fakefileno ==
3029 nfsva.na_fileid);
3030 dp->d_fileno = fakefileno;
3031 }
3032 dp->d_type = vtonfs_dtype(nfsva.na_type);
3033 }
3034 } else {
3035 dp->d_fileno = nfsva.na_fileid;
3036 }
3037 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3038 ncookie.lval[0];
3039 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3040 ncookie.lval[1];
3041 }
3042 more_dirs = fxdr_unsigned(int, *tl);
3043 }
3044 /*
3045 * If at end of rpc data, get the eof boolean
3046 */
3047 if (!more_dirs) {
3048 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3049 eof = fxdr_unsigned(int, *tl);
3050 if (tryformoredirs)
3051 more_dirs = !eof;
3052 if (nd->nd_flag & ND_NFSV4) {
3053 error = nfscl_postop_attr(nd, nap, attrflagp,
3054 stuff);
3055 if (error)
3056 goto nfsmout;
3057 }
3058 }
3059 mbuf_freem(nd->nd_mrep);
3060 nd->nd_mrep = NULL;
3061 }
3062 /*
3063 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3064 * by increasing d_reclen for the last record.
3065 */
3066 if (blksiz > 0) {
3067 left = DIRBLKSIZ - blksiz;
3068 dp->d_reclen += left;
3069 uio_iov_base_add(uiop, left);
3070 uio_iov_len_add(uiop, -(left));
3071 uio_uio_resid_add(uiop, -(left));
3072 uiop->uio_offset += left;
3073 }
3074
3075 /*
3076 * If returning no data, assume end of file.
3077 * If not bigenough, return not end of file, since you aren't
3078 * returning all the data
3079 * Otherwise, return the eof flag from the server.
3080 */
3081 if (eofp) {
3082 if (tresid == ((size_t)(uio_uio_resid(uiop))))
3083 *eofp = 1;
3084 else if (!bigenough)
3085 *eofp = 0;
3086 else
3087 *eofp = eof;
3088 }
3089
3090 /*
3091 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3092 */
3093 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) {
3094 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
3095 dp->d_type = DT_UNKNOWN;
3096 dp->d_fileno = 0;
3097 dp->d_namlen = 0;
3098 dp->d_name[0] = '\0';
3099 tl = (u_int32_t *)&dp->d_name[4];
3100 *tl++ = cookie.lval[0];
3101 *tl = cookie.lval[1];
3102 dp->d_reclen = DIRBLKSIZ;
3103 uio_iov_base_add(uiop, DIRBLKSIZ);
3104 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3105 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3106 uiop->uio_offset += DIRBLKSIZ;
3107 }
3108
3109 nfsmout:
3110 if (nd->nd_mrep != NULL)
3111 mbuf_freem(nd->nd_mrep);
3112 return (error);
3113 }
3114
3115 #ifndef APPLE
3116 /*
3117 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
3118 * (Also used for NFS V4 when mount flag set.)
3119 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
3120 */
3121 APPLESTATIC int
3122 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
3123 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3124 int *eofp, void *stuff)
3125 {
3126 int len, left;
3127 struct dirent *dp = NULL;
3128 u_int32_t *tl;
3129 vnode_t newvp = NULLVP;
3130 struct nfsrv_descript nfsd, *nd = &nfsd;
3131 struct nameidata nami, *ndp = &nami;
3132 struct componentname *cnp = &ndp->ni_cnd;
3133 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3134 struct nfsnode *dnp = VTONFS(vp), *np;
3135 struct nfsvattr nfsva;
3136 struct nfsfh *nfhp;
3137 nfsquad_t cookie, ncookie;
3138 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
3139 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
3140 int isdotdot = 0, unlocknewvp = 0;
3141 long dotfileid, dotdotfileid = 0, fileno = 0;
3142 char *cp;
3143 nfsattrbit_t attrbits, dattrbits;
3144 size_t tresid;
3145 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
3146 struct timespec dctime;
3147
3148 KASSERT(uiop->uio_iovcnt == 1 &&
3149 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
3150 ("nfs readdirplusrpc bad uio"));
3151 timespecclear(&dctime);
3152 *attrflagp = 0;
3153 if (eofp != NULL)
3154 *eofp = 0;
3155 ndp->ni_dvp = vp;
3156 nd->nd_mrep = NULL;
3157 cookie.lval[0] = cookiep->nfsuquad[0];
3158 cookie.lval[1] = cookiep->nfsuquad[1];
3159 tresid = uio_uio_resid(uiop);
3160
3161 /*
3162 * For NFSv4, first create the "." and ".." entries.
3163 */
3164 if (NFSHASNFSV4(nmp)) {
3165 NFSGETATTR_ATTRBIT(&dattrbits);
3166 NFSZERO_ATTRBIT(&attrbits);
3167 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
3168 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
3169 NFSATTRBIT_MOUNTEDONFILEID)) {
3170 NFSSETBIT_ATTRBIT(&attrbits,
3171 NFSATTRBIT_MOUNTEDONFILEID);
3172 gotmnton = 1;
3173 } else {
3174 /*
3175 * Must fake it. Use the fileno, except when the
3176 * fsid is != to that of the directory. For that
3177 * case, generate a fake fileno that is not the same.
3178 */
3179 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
3180 gotmnton = 0;
3181 }
3182
3183 /*
3184 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
3185 */
3186 if (uiop->uio_offset == 0) {
3187 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
3188 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3189 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
3190 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3191 (void) nfsrv_putattrbit(nd, &attrbits);
3192 error = nfscl_request(nd, vp, p, cred, stuff);
3193 if (error)
3194 return (error);
3195 dotfileid = 0; /* Fake out the compiler. */
3196 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
3197 error = nfsm_loadattr(nd, &nfsva);
3198 if (error != 0)
3199 goto nfsmout;
3200 dctime = nfsva.na_ctime;
3201 dotfileid = nfsva.na_fileid;
3202 }
3203 if (nd->nd_repstat == 0) {
3204 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
3205 len = fxdr_unsigned(int, *(tl + 4));
3206 if (len > 0 && len <= NFSX_V4FHMAX)
3207 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3208 else
3209 error = EPERM;
3210 if (!error) {
3211 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3212 nfsva.na_mntonfileno = 0xffffffff;
3213 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3214 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3215 NULL, NULL, NULL, p, cred);
3216 if (error) {
3217 dotdotfileid = dotfileid;
3218 } else if (gotmnton) {
3219 if (nfsva.na_mntonfileno != 0xffffffff)
3220 dotdotfileid = nfsva.na_mntonfileno;
3221 else
3222 dotdotfileid = nfsva.na_fileid;
3223 } else if (nfsva.na_filesid[0] ==
3224 dnp->n_vattr.na_filesid[0] &&
3225 nfsva.na_filesid[1] ==
3226 dnp->n_vattr.na_filesid[1]) {
3227 dotdotfileid = nfsva.na_fileid;
3228 } else {
3229 do {
3230 fakefileno--;
3231 } while (fakefileno ==
3232 nfsva.na_fileid);
3233 dotdotfileid = fakefileno;
3234 }
3235 }
3236 } else if (nd->nd_repstat == NFSERR_NOENT) {
3237 /*
3238 * Lookupp returns NFSERR_NOENT when we are
3239 * at the root, so just use the current dir.
3240 */
3241 nd->nd_repstat = 0;
3242 dotdotfileid = dotfileid;
3243 } else {
3244 error = nd->nd_repstat;
3245 }
3246 mbuf_freem(nd->nd_mrep);
3247 if (error)
3248 return (error);
3249 nd->nd_mrep = NULL;
3250 dp = (struct dirent *)uio_iov_base(uiop);
3251 dp->d_type = DT_DIR;
3252 dp->d_fileno = dotfileid;
3253 dp->d_namlen = 1;
3254 dp->d_name[0] = '.';
3255 dp->d_name[1] = '\0';
3256 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3257 /*
3258 * Just make these offset cookie 0.
3259 */
3260 tl = (u_int32_t *)&dp->d_name[4];
3261 *tl++ = 0;
3262 *tl = 0;
3263 blksiz += dp->d_reclen;
3264 uio_uio_resid_add(uiop, -(dp->d_reclen));
3265 uiop->uio_offset += dp->d_reclen;
3266 uio_iov_base_add(uiop, dp->d_reclen);
3267 uio_iov_len_add(uiop, -(dp->d_reclen));
3268 dp = (struct dirent *)uio_iov_base(uiop);
3269 dp->d_type = DT_DIR;
3270 dp->d_fileno = dotdotfileid;
3271 dp->d_namlen = 2;
3272 dp->d_name[0] = '.';
3273 dp->d_name[1] = '.';
3274 dp->d_name[2] = '\0';
3275 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3276 /*
3277 * Just make these offset cookie 0.
3278 */
3279 tl = (u_int32_t *)&dp->d_name[4];
3280 *tl++ = 0;
3281 *tl = 0;
3282 blksiz += dp->d_reclen;
3283 uio_uio_resid_add(uiop, -(dp->d_reclen));
3284 uiop->uio_offset += dp->d_reclen;
3285 uio_iov_base_add(uiop, dp->d_reclen);
3286 uio_iov_len_add(uiop, -(dp->d_reclen));
3287 }
3288 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3289 if (gotmnton)
3290 NFSSETBIT_ATTRBIT(&attrbits,
3291 NFSATTRBIT_MOUNTEDONFILEID);
3292 }
3293
3294 /*
3295 * Loop around doing readdir rpc's of size nm_readdirsize.
3296 * The stopping criteria is EOF or buffer full.
3297 */
3298 while (more_dirs && bigenough) {
3299 *attrflagp = 0;
3300 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3301 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3302 *tl++ = cookie.lval[0];
3303 *tl++ = cookie.lval[1];
3304 if (cookie.qval == 0) {
3305 *tl++ = 0;
3306 *tl++ = 0;
3307 } else {
3308 NFSLOCKNODE(dnp);
3309 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3310 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3311 NFSUNLOCKNODE(dnp);
3312 }
3313 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3314 *tl = txdr_unsigned(nmp->nm_readdirsize);
3315 if (nd->nd_flag & ND_NFSV4) {
3316 (void) nfsrv_putattrbit(nd, &attrbits);
3317 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3318 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3319 (void) nfsrv_putattrbit(nd, &dattrbits);
3320 }
3321 error = nfscl_request(nd, vp, p, cred, stuff);
3322 if (error)
3323 return (error);
3324 if (nd->nd_flag & ND_NFSV3)
3325 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3326 if (nd->nd_repstat || error) {
3327 if (!error)
3328 error = nd->nd_repstat;
3329 goto nfsmout;
3330 }
3331 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
3332 dctime = nap->na_ctime;
3333 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3334 NFSLOCKNODE(dnp);
3335 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3336 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3337 NFSUNLOCKNODE(dnp);
3338 more_dirs = fxdr_unsigned(int, *tl);
3339 if (!more_dirs)
3340 tryformoredirs = 0;
3341
3342 /* loop thru the dir entries, doctoring them to 4bsd form */
3343 while (more_dirs && bigenough) {
3344 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3345 if (nd->nd_flag & ND_NFSV4) {
3346 ncookie.lval[0] = *tl++;
3347 ncookie.lval[1] = *tl++;
3348 } else {
3349 fileno = fxdr_unsigned(long, *++tl);
3350 tl++;
3351 }
3352 len = fxdr_unsigned(int, *tl);
3353 if (len <= 0 || len > NFS_MAXNAMLEN) {
3354 error = EBADRPC;
3355 goto nfsmout;
3356 }
3357 tlen = NFSM_RNDUP(len);
3358 if (tlen == len)
3359 tlen += 4; /* To ensure null termination */
3360 left = DIRBLKSIZ - blksiz;
3361 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) {
3362 dp->d_reclen += left;
3363 uio_iov_base_add(uiop, left);
3364 uio_iov_len_add(uiop, -(left));
3365 uio_uio_resid_add(uiop, -(left));
3366 uiop->uio_offset += left;
3367 blksiz = 0;
3368 }
3369 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
3370 bigenough = 0;
3371 if (bigenough) {
3372 dp = (struct dirent *)uio_iov_base(uiop);
3373 dp->d_namlen = len;
3374 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
3375 dp->d_type = DT_UNKNOWN;
3376 blksiz += dp->d_reclen;
3377 if (blksiz == DIRBLKSIZ)
3378 blksiz = 0;
3379 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3380 uiop->uio_offset += DIRHDSIZ;
3381 uio_iov_base_add(uiop, DIRHDSIZ);
3382 uio_iov_len_add(uiop, -(DIRHDSIZ));
3383 cnp->cn_nameptr = uio_iov_base(uiop);
3384 cnp->cn_namelen = len;
3385 NFSCNHASHZERO(cnp);
3386 error = nfsm_mbufuio(nd, uiop, len);
3387 if (error)
3388 goto nfsmout;
3389 cp = uio_iov_base(uiop);
3390 tlen -= len;
3391 *cp = '\0';
3392 cp += tlen; /* points to cookie storage */
3393 tl2 = (u_int32_t *)cp;
3394 if (len == 2 && cnp->cn_nameptr[0] == '.' &&
3395 cnp->cn_nameptr[1] == '.')
3396 isdotdot = 1;
3397 else
3398 isdotdot = 0;
3399 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3400 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3401 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3402 uiop->uio_offset += (tlen + NFSX_HYPER);
3403 } else {
3404 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3405 if (error)
3406 goto nfsmout;
3407 }
3408 nfhp = NULL;
3409 if (nd->nd_flag & ND_NFSV3) {
3410 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3411 ncookie.lval[0] = *tl++;
3412 ncookie.lval[1] = *tl++;
3413 attrflag = fxdr_unsigned(int, *tl);
3414 if (attrflag) {
3415 error = nfsm_loadattr(nd, &nfsva);
3416 if (error)
3417 goto nfsmout;
3418 }
3419 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3420 if (*tl) {
3421 error = nfsm_getfh(nd, &nfhp);
3422 if (error)
3423 goto nfsmout;
3424 }
3425 if (!attrflag && nfhp != NULL) {
3426 FREE((caddr_t)nfhp, M_NFSFH);
3427 nfhp = NULL;
3428 }
3429 } else {
3430 rderr = 0;
3431 nfsva.na_mntonfileno = 0xffffffff;
3432 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3433 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3434 NULL, NULL, &rderr, p, cred);
3435 if (error)
3436 goto nfsmout;
3437 }
3438
3439 if (bigenough) {
3440 if (nd->nd_flag & ND_NFSV4) {
3441 if (rderr) {
3442 dp->d_fileno = 0;
3443 } else if (gotmnton) {
3444 if (nfsva.na_mntonfileno != 0xffffffff)
3445 dp->d_fileno = nfsva.na_mntonfileno;
3446 else
3447 dp->d_fileno = nfsva.na_fileid;
3448 } else if (nfsva.na_filesid[0] ==
3449 dnp->n_vattr.na_filesid[0] &&
3450 nfsva.na_filesid[1] ==
3451 dnp->n_vattr.na_filesid[1]) {
3452 dp->d_fileno = nfsva.na_fileid;
3453 } else {
3454 do {
3455 fakefileno--;
3456 } while (fakefileno ==
3457 nfsva.na_fileid);
3458 dp->d_fileno = fakefileno;
3459 }
3460 } else {
3461 dp->d_fileno = fileno;
3462 }
3463 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3464 ncookie.lval[0];
3465 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3466 ncookie.lval[1];
3467
3468 if (nfhp != NULL) {
3469 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3470 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3471 VREF(vp);
3472 newvp = vp;
3473 unlocknewvp = 0;
3474 FREE((caddr_t)nfhp, M_NFSFH);
3475 np = dnp;
3476 } else if (isdotdot != 0) {
3477 /*
3478 * Skip doing a nfscl_nget() call for "..".
3479 * There's a race between acquiring the nfs
3480 * node here and lookups that look for the
3481 * directory being read (in the parent).
3482 * It would try to get a lock on ".." here,
3483 * owning the lock on the directory being
3484 * read. Lookup will hold the lock on ".."
3485 * and try to acquire the lock on the
3486 * directory being read.
3487 * If the directory is unlocked/relocked,
3488 * then there is a LOR with the buflock
3489 * vp is relocked.
3490 */
3491 free(nfhp, M_NFSFH);
3492 } else {
3493 error = nfscl_nget(vnode_mount(vp), vp,
3494 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
3495 if (!error) {
3496 newvp = NFSTOV(np);
3497 unlocknewvp = 1;
3498 }
3499 }
3500 nfhp = NULL;
3501 if (newvp != NULLVP) {
3502 error = nfscl_loadattrcache(&newvp,
3503 &nfsva, NULL, NULL, 0, 0);
3504 if (error) {
3505 if (unlocknewvp)
3506 vput(newvp);
3507 else
3508 vrele(newvp);
3509 goto nfsmout;
3510 }
3511 dp->d_type =
3512 vtonfs_dtype(np->n_vattr.na_type);
3513 ndp->ni_vp = newvp;
3514 NFSCNHASH(cnp, HASHINIT);
3515 if (cnp->cn_namelen <= NCHNAMLEN &&
3516 (newvp->v_type != VDIR ||
3517 dctime.tv_sec != 0)) {
3518 cache_enter_time(ndp->ni_dvp,
3519 ndp->ni_vp, cnp,
3520 &nfsva.na_ctime,
3521 newvp->v_type != VDIR ? NULL :
3522 &dctime);
3523 }
3524 if (unlocknewvp)
3525 vput(newvp);
3526 else
3527 vrele(newvp);
3528 newvp = NULLVP;
3529 }
3530 }
3531 } else if (nfhp != NULL) {
3532 FREE((caddr_t)nfhp, M_NFSFH);
3533 }
3534 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3535 more_dirs = fxdr_unsigned(int, *tl);
3536 }
3537 /*
3538 * If at end of rpc data, get the eof boolean
3539 */
3540 if (!more_dirs) {
3541 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3542 eof = fxdr_unsigned(int, *tl);
3543 if (tryformoredirs)
3544 more_dirs = !eof;
3545 if (nd->nd_flag & ND_NFSV4) {
3546 error = nfscl_postop_attr(nd, nap, attrflagp,
3547 stuff);
3548 if (error)
3549 goto nfsmout;
3550 }
3551 }
3552 mbuf_freem(nd->nd_mrep);
3553 nd->nd_mrep = NULL;
3554 }
3555 /*
3556 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3557 * by increasing d_reclen for the last record.
3558 */
3559 if (blksiz > 0) {
3560 left = DIRBLKSIZ - blksiz;
3561 dp->d_reclen += left;
3562 uio_iov_base_add(uiop, left);
3563 uio_iov_len_add(uiop, -(left));
3564 uio_uio_resid_add(uiop, -(left));
3565 uiop->uio_offset += left;
3566 }
3567
3568 /*
3569 * If returning no data, assume end of file.
3570 * If not bigenough, return not end of file, since you aren't
3571 * returning all the data
3572 * Otherwise, return the eof flag from the server.
3573 */
3574 if (eofp != NULL) {
3575 if (tresid == uio_uio_resid(uiop))
3576 *eofp = 1;
3577 else if (!bigenough)
3578 *eofp = 0;
3579 else
3580 *eofp = eof;
3581 }
3582
3583 /*
3584 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3585 */
3586 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
3587 dp = (struct dirent *)uio_iov_base(uiop);
3588 dp->d_type = DT_UNKNOWN;
3589 dp->d_fileno = 0;
3590 dp->d_namlen = 0;
3591 dp->d_name[0] = '\0';
3592 tl = (u_int32_t *)&dp->d_name[4];
3593 *tl++ = cookie.lval[0];
3594 *tl = cookie.lval[1];
3595 dp->d_reclen = DIRBLKSIZ;
3596 uio_iov_base_add(uiop, DIRBLKSIZ);
3597 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3598 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3599 uiop->uio_offset += DIRBLKSIZ;
3600 }
3601
3602 nfsmout:
3603 if (nd->nd_mrep != NULL)
3604 mbuf_freem(nd->nd_mrep);
3605 return (error);
3606 }
3607 #endif /* !APPLE */
3608
3609 /*
3610 * Nfs commit rpc
3611 */
3612 APPLESTATIC int
3613 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3614 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3615 {
3616 u_int32_t *tl;
3617 struct nfsrv_descript nfsd, *nd = &nfsd;
3618 nfsattrbit_t attrbits;
3619 int error;
3620 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3621
3622 *attrflagp = 0;
3623 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3624 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3625 txdr_hyper(offset, tl);
3626 tl += 2;
3627 *tl = txdr_unsigned(cnt);
3628 if (nd->nd_flag & ND_NFSV4) {
3629 /*
3630 * And do a Getattr op.
3631 */
3632 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3633 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3634 NFSGETATTR_ATTRBIT(&attrbits);
3635 (void) nfsrv_putattrbit(nd, &attrbits);
3636 }
3637 error = nfscl_request(nd, vp, p, cred, stuff);
3638 if (error)
3639 return (error);
3640 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3641 if (!error && !nd->nd_repstat) {
3642 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3643 NFSLOCKMNT(nmp);
3644 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) {
3645 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
3646 nd->nd_repstat = NFSERR_STALEWRITEVERF;
3647 }
3648 NFSUNLOCKMNT(nmp);
3649 if (nd->nd_flag & ND_NFSV4)
3650 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3651 }
3652 nfsmout:
3653 if (!error && nd->nd_repstat)
3654 error = nd->nd_repstat;
3655 mbuf_freem(nd->nd_mrep);
3656 return (error);
3657 }
3658
3659 /*
3660 * NFS byte range lock rpc.
3661 * (Mostly just calls one of the three lower level RPC routines.)
3662 */
3663 APPLESTATIC int
3664 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3665 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3666 {
3667 struct nfscllockowner *lp;
3668 struct nfsclclient *clp;
3669 struct nfsfh *nfhp;
3670 struct nfsrv_descript nfsd, *nd = &nfsd;
3671 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3672 u_int64_t off, len;
3673 off_t start, end;
3674 u_int32_t clidrev = 0;
3675 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3676 int callcnt, dorpc;
3677
3678 /*
3679 * Convert the flock structure into a start and end and do POSIX
3680 * bounds checking.
3681 */
3682 switch (fl->l_whence) {
3683 case SEEK_SET:
3684 case SEEK_CUR:
3685 /*
3686 * Caller is responsible for adding any necessary offset
3687 * when SEEK_CUR is used.
3688 */
3689 start = fl->l_start;
3690 off = fl->l_start;
3691 break;
3692 case SEEK_END:
3693 start = size + fl->l_start;
3694 off = size + fl->l_start;
3695 break;
3696 default:
3697 return (EINVAL);
3698 };
3699 if (start < 0)
3700 return (EINVAL);
3701 if (fl->l_len != 0) {
3702 end = start + fl->l_len - 1;
3703 if (end < start)
3704 return (EINVAL);
3705 }
3706
3707 len = fl->l_len;
3708 if (len == 0)
3709 len = NFS64BITSSET;
3710 retrycnt = 0;
3711 do {
3712 nd->nd_repstat = 0;
3713 if (op == F_GETLK) {
3714 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3715 if (error)
3716 return (error);
3717 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
3718 if (!error) {
3719 clidrev = clp->nfsc_clientidrev;
3720 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3721 p, id, flags);
3722 } else if (error == -1) {
3723 error = 0;
3724 }
3725 nfscl_clientrelease(clp);
3726 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3727 /*
3728 * We must loop around for all lockowner cases.
3729 */
3730 callcnt = 0;
3731 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3732 if (error)
3733 return (error);
3734 do {
3735 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3736 clp, id, flags, &lp, &dorpc);
3737 /*
3738 * If it returns a NULL lp, we're done.
3739 */
3740 if (lp == NULL) {
3741 if (callcnt == 0)
3742 nfscl_clientrelease(clp);
3743 else
3744 nfscl_releasealllocks(clp, vp, p, id, flags);
3745 return (error);
3746 }
3747 if (nmp->nm_clp != NULL)
3748 clidrev = nmp->nm_clp->nfsc_clientidrev;
3749 else
3750 clidrev = 0;
3751 /*
3752 * If the server doesn't support Posix lock semantics,
3753 * only allow locks on the entire file, since it won't
3754 * handle overlapping byte ranges.
3755 * There might still be a problem when a lock
3756 * upgrade/downgrade (read<->write) occurs, since the
3757 * server "might" expect an unlock first?
3758 */
3759 if (dorpc && (lp->nfsl_open->nfso_posixlock ||
3760 (off == 0 && len == NFS64BITSSET))) {
3761 /*
3762 * Since the lock records will go away, we must
3763 * wait for grace and delay here.
3764 */
3765 do {
3766 error = nfsrpc_locku(nd, nmp, lp, off, len,
3767 NFSV4LOCKT_READ, cred, p, 0);
3768 if ((nd->nd_repstat == NFSERR_GRACE ||
3769 nd->nd_repstat == NFSERR_DELAY) &&
3770 error == 0)
3771 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
3772 "nfs_advlock");
3773 } while ((nd->nd_repstat == NFSERR_GRACE ||
3774 nd->nd_repstat == NFSERR_DELAY) && error == 0);
3775 }
3776 callcnt++;
3777 } while (error == 0 && nd->nd_repstat == 0);
3778 nfscl_releasealllocks(clp, vp, p, id, flags);
3779 } else if (op == F_SETLK) {
3780 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
3781 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
3782 if (error || donelocally) {
3783 return (error);
3784 }
3785 if (nmp->nm_clp != NULL)
3786 clidrev = nmp->nm_clp->nfsc_clientidrev;
3787 else
3788 clidrev = 0;
3789 nfhp = VTONFS(vp)->n_fhp;
3790 if (!lp->nfsl_open->nfso_posixlock &&
3791 (off != 0 || len != NFS64BITSSET)) {
3792 error = EINVAL;
3793 } else {
3794 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
3795 nfhp->nfh_len, lp, newone, reclaim, off,
3796 len, fl->l_type, cred, p, 0);
3797 }
3798 if (!error)
3799 error = nd->nd_repstat;
3800 nfscl_lockrelease(lp, error, newone);
3801 } else {
3802 error = EINVAL;
3803 }
3804 if (!error)
3805 error = nd->nd_repstat;
3806 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
3807 error == NFSERR_STALEDONTRECOVER ||
3808 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3809 error == NFSERR_BADSESSION) {
3810 (void) nfs_catnap(PZERO, error, "nfs_advlock");
3811 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
3812 && clidrev != 0) {
3813 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
3814 retrycnt++;
3815 }
3816 } while (error == NFSERR_GRACE ||
3817 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3818 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
3819 error == NFSERR_BADSESSION ||
3820 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
3821 expireret == 0 && clidrev != 0 && retrycnt < 4));
3822 if (error && retrycnt >= 4)
3823 error = EIO;
3824 return (error);
3825 }
3826
3827 /*
3828 * The lower level routine for the LockT case.
3829 */
3830 APPLESTATIC int
3831 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
3832 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
3833 struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3834 {
3835 u_int32_t *tl;
3836 int error, type, size;
3837 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3838 struct nfsnode *np;
3839 struct nfsmount *nmp;
3840
3841 nmp = VFSTONFS(vp->v_mount);
3842 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
3843 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3844 if (fl->l_type == F_RDLCK)
3845 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3846 else
3847 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3848 txdr_hyper(off, tl);
3849 tl += 2;
3850 txdr_hyper(len, tl);
3851 tl += 2;
3852 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
3853 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
3854 nfscl_filllockowner(id, own, flags);
3855 np = VTONFS(vp);
3856 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
3857 np->n_fhp->nfh_len);
3858 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
3859 error = nfscl_request(nd, vp, p, cred, NULL);
3860 if (error)
3861 return (error);
3862 if (nd->nd_repstat == 0) {
3863 fl->l_type = F_UNLCK;
3864 } else if (nd->nd_repstat == NFSERR_DENIED) {
3865 nd->nd_repstat = 0;
3866 fl->l_whence = SEEK_SET;
3867 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3868 fl->l_start = fxdr_hyper(tl);
3869 tl += 2;
3870 len = fxdr_hyper(tl);
3871 tl += 2;
3872 if (len == NFS64BITSSET)
3873 fl->l_len = 0;
3874 else
3875 fl->l_len = len;
3876 type = fxdr_unsigned(int, *tl++);
3877 if (type == NFSV4LOCKT_WRITE)
3878 fl->l_type = F_WRLCK;
3879 else
3880 fl->l_type = F_RDLCK;
3881 /*
3882 * XXX For now, I have no idea what to do with the
3883 * conflicting lock_owner, so I'll just set the pid == 0
3884 * and skip over the lock_owner.
3885 */
3886 fl->l_pid = (pid_t)0;
3887 tl += 2;
3888 size = fxdr_unsigned(int, *tl);
3889 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3890 error = EBADRPC;
3891 if (!error)
3892 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3893 } else if (nd->nd_repstat == NFSERR_STALECLIENTID ||
3894 nd->nd_repstat == NFSERR_BADSESSION)
3895 nfscl_initiate_recovery(clp);
3896 nfsmout:
3897 mbuf_freem(nd->nd_mrep);
3898 return (error);
3899 }
3900
3901 /*
3902 * Lower level function that performs the LockU RPC.
3903 */
3904 static int
3905 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
3906 struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
3907 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
3908 {
3909 u_int32_t *tl;
3910 int error;
3911
3912 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
3913 lp->nfsl_open->nfso_fhlen, NULL, NULL);
3914 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
3915 *tl++ = txdr_unsigned(type);
3916 *tl = txdr_unsigned(lp->nfsl_seqid);
3917 if (nfstest_outofseq &&
3918 (arc4random() % nfstest_outofseq) == 0)
3919 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3920 tl++;
3921 if (NFSHASNFSV4N(nmp))
3922 *tl++ = 0;
3923 else
3924 *tl++ = lp->nfsl_stateid.seqid;
3925 *tl++ = lp->nfsl_stateid.other[0];
3926 *tl++ = lp->nfsl_stateid.other[1];
3927 *tl++ = lp->nfsl_stateid.other[2];
3928 txdr_hyper(off, tl);
3929 tl += 2;
3930 txdr_hyper(len, tl);
3931 if (syscred)
3932 nd->nd_flag |= ND_USEGSSNAME;
3933 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
3934 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
3935 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3936 if (error)
3937 return (error);
3938 if (nd->nd_repstat == 0) {
3939 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3940 lp->nfsl_stateid.seqid = *tl++;
3941 lp->nfsl_stateid.other[0] = *tl++;
3942 lp->nfsl_stateid.other[1] = *tl++;
3943 lp->nfsl_stateid.other[2] = *tl;
3944 } else if (nd->nd_repstat == NFSERR_STALESTATEID ||
3945 nd->nd_repstat == NFSERR_BADSESSION)
3946 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3947 nfsmout:
3948 mbuf_freem(nd->nd_mrep);
3949 return (error);
3950 }
3951
3952 /*
3953 * The actual Lock RPC.
3954 */
3955 APPLESTATIC int
3956 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
3957 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
3958 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
3959 NFSPROC_T *p, int syscred)
3960 {
3961 u_int32_t *tl;
3962 int error, size;
3963 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3964
3965 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL);
3966 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3967 if (type == F_RDLCK)
3968 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3969 else
3970 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3971 *tl++ = txdr_unsigned(reclaim);
3972 txdr_hyper(off, tl);
3973 tl += 2;
3974 txdr_hyper(len, tl);
3975 tl += 2;
3976 if (newone) {
3977 *tl = newnfs_true;
3978 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
3979 2 * NFSX_UNSIGNED + NFSX_HYPER);
3980 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
3981 if (NFSHASNFSV4N(nmp))
3982 *tl++ = 0;
3983 else
3984 *tl++ = lp->nfsl_open->nfso_stateid.seqid;
3985 *tl++ = lp->nfsl_open->nfso_stateid.other[0];
3986 *tl++ = lp->nfsl_open->nfso_stateid.other[1];
3987 *tl++ = lp->nfsl_open->nfso_stateid.other[2];
3988 *tl++ = txdr_unsigned(lp->nfsl_seqid);
3989 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
3990 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
3991 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
3992 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
3993 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
3994 } else {
3995 *tl = newnfs_false;
3996 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
3997 if (NFSHASNFSV4N(nmp))
3998 *tl++ = 0;
3999 else
4000 *tl++ = lp->nfsl_stateid.seqid;
4001 *tl++ = lp->nfsl_stateid.other[0];
4002 *tl++ = lp->nfsl_stateid.other[1];
4003 *tl++ = lp->nfsl_stateid.other[2];
4004 *tl = txdr_unsigned(lp->nfsl_seqid);
4005 if (nfstest_outofseq &&
4006 (arc4random() % nfstest_outofseq) == 0)
4007 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
4008 }
4009 if (syscred)
4010 nd->nd_flag |= ND_USEGSSNAME;
4011 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
4012 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4013 if (error)
4014 return (error);
4015 if (newone)
4016 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
4017 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
4018 if (nd->nd_repstat == 0) {
4019 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
4020 lp->nfsl_stateid.seqid = *tl++;
4021 lp->nfsl_stateid.other[0] = *tl++;
4022 lp->nfsl_stateid.other[1] = *tl++;
4023 lp->nfsl_stateid.other[2] = *tl;
4024 } else if (nd->nd_repstat == NFSERR_DENIED) {
4025 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
4026 size = fxdr_unsigned(int, *(tl + 7));
4027 if (size < 0 || size > NFSV4_OPAQUELIMIT)
4028 error = EBADRPC;
4029 if (!error)
4030 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
4031 } else if (nd->nd_repstat == NFSERR_STALESTATEID ||
4032 nd->nd_repstat == NFSERR_BADSESSION)
4033 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
4034 nfsmout:
4035 mbuf_freem(nd->nd_mrep);
4036 return (error);
4037 }
4038
4039 /*
4040 * nfs statfs rpc
4041 * (always called with the vp for the mount point)
4042 */
4043 APPLESTATIC int
4044 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
4045 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4046 void *stuff)
4047 {
4048 u_int32_t *tl = NULL;
4049 struct nfsrv_descript nfsd, *nd = &nfsd;
4050 struct nfsmount *nmp;
4051 nfsattrbit_t attrbits;
4052 int error;
4053
4054 *attrflagp = 0;
4055 nmp = VFSTONFS(vnode_mount(vp));
4056 if (NFSHASNFSV4(nmp)) {
4057 /*
4058 * For V4, you actually do a getattr.
4059 */
4060 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4061 NFSSTATFS_GETATTRBIT(&attrbits);
4062 (void) nfsrv_putattrbit(nd, &attrbits);
4063 nd->nd_flag |= ND_USEGSSNAME;
4064 error = nfscl_request(nd, vp, p, cred, stuff);
4065 if (error)
4066 return (error);
4067 if (nd->nd_repstat == 0) {
4068 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4069 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
4070 cred);
4071 if (!error) {
4072 nmp->nm_fsid[0] = nap->na_filesid[0];
4073 nmp->nm_fsid[1] = nap->na_filesid[1];
4074 NFSSETHASSETFSID(nmp);
4075 *attrflagp = 1;
4076 }
4077 } else {
4078 error = nd->nd_repstat;
4079 }
4080 if (error)
4081 goto nfsmout;
4082 } else {
4083 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
4084 error = nfscl_request(nd, vp, p, cred, stuff);
4085 if (error)
4086 return (error);
4087 if (nd->nd_flag & ND_NFSV3) {
4088 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4089 if (error)
4090 goto nfsmout;
4091 }
4092 if (nd->nd_repstat) {
4093 error = nd->nd_repstat;
4094 goto nfsmout;
4095 }
4096 NFSM_DISSECT(tl, u_int32_t *,
4097 NFSX_STATFS(nd->nd_flag & ND_NFSV3));
4098 }
4099 if (NFSHASNFSV3(nmp)) {
4100 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
4101 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
4102 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
4103 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
4104 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
4105 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
4106 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
4107 } else if (NFSHASNFSV4(nmp) == 0) {
4108 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
4109 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
4110 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
4111 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
4112 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
4113 }
4114 nfsmout:
4115 mbuf_freem(nd->nd_mrep);
4116 return (error);
4117 }
4118
4119 /*
4120 * nfs pathconf rpc
4121 */
4122 APPLESTATIC int
4123 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
4124 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4125 void *stuff)
4126 {
4127 struct nfsrv_descript nfsd, *nd = &nfsd;
4128 struct nfsmount *nmp;
4129 u_int32_t *tl;
4130 nfsattrbit_t attrbits;
4131 int error;
4132
4133 *attrflagp = 0;
4134 nmp = VFSTONFS(vnode_mount(vp));
4135 if (NFSHASNFSV4(nmp)) {
4136 /*
4137 * For V4, you actually do a getattr.
4138 */
4139 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4140 NFSPATHCONF_GETATTRBIT(&attrbits);
4141 (void) nfsrv_putattrbit(nd, &attrbits);
4142 nd->nd_flag |= ND_USEGSSNAME;
4143 error = nfscl_request(nd, vp, p, cred, stuff);
4144 if (error)
4145 return (error);
4146 if (nd->nd_repstat == 0) {
4147 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4148 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
4149 cred);
4150 if (!error)
4151 *attrflagp = 1;
4152 } else {
4153 error = nd->nd_repstat;
4154 }
4155 } else {
4156 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
4157 error = nfscl_request(nd, vp, p, cred, stuff);
4158 if (error)
4159 return (error);
4160 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4161 if (nd->nd_repstat && !error)
4162 error = nd->nd_repstat;
4163 if (!error) {
4164 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
4165 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
4166 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
4167 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
4168 pc->pc_chownrestricted =
4169 fxdr_unsigned(u_int32_t, *tl++);
4170 pc->pc_caseinsensitive =
4171 fxdr_unsigned(u_int32_t, *tl++);
4172 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
4173 }
4174 }
4175 nfsmout:
4176 mbuf_freem(nd->nd_mrep);
4177 return (error);
4178 }
4179
4180 /*
4181 * nfs version 3 fsinfo rpc call
4182 */
4183 APPLESTATIC int
4184 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
4185 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
4186 {
4187 u_int32_t *tl;
4188 struct nfsrv_descript nfsd, *nd = &nfsd;
4189 int error;
4190
4191 *attrflagp = 0;
4192 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
4193 error = nfscl_request(nd, vp, p, cred, stuff);
4194 if (error)
4195 return (error);
4196 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4197 if (nd->nd_repstat && !error)
4198 error = nd->nd_repstat;
4199 if (!error) {
4200 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
4201 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
4202 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
4203 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
4204 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
4205 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
4206 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
4207 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
4208 fsp->fs_maxfilesize = fxdr_hyper(tl);
4209 tl += 2;
4210 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
4211 tl += 2;
4212 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
4213 }
4214 nfsmout:
4215 mbuf_freem(nd->nd_mrep);
4216 return (error);
4217 }
4218
4219 /*
4220 * This function performs the Renew RPC.
4221 */
4222 APPLESTATIC int
4223 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred,
4224 NFSPROC_T *p)
4225 {
4226 u_int32_t *tl;
4227 struct nfsrv_descript nfsd;
4228 struct nfsrv_descript *nd = &nfsd;
4229 struct nfsmount *nmp;
4230 int error;
4231 struct nfssockreq *nrp;
4232
4233 nmp = clp->nfsc_nmp;
4234 if (nmp == NULL)
4235 return (0);
4236 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
4237 &dsp->nfsclds_sess);
4238 if (!NFSHASNFSV4N(nmp)) {
4239 /* NFSv4.1 just uses a Sequence Op and not a Renew. */
4240 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4241 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
4242 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
4243 }
4244 nrp = dsp->nfsclds_sockp;
4245 if (nrp == NULL)
4246 /* If NULL, use the MDS socket. */
4247 nrp = &nmp->nm_sockreq;
4248 nd->nd_flag |= ND_USEGSSNAME;
4249 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4250 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
4251 if (error)
4252 return (error);
4253 error = nd->nd_repstat;
4254 mbuf_freem(nd->nd_mrep);
4255 return (error);
4256 }
4257
4258 /*
4259 * This function performs the Releaselockowner RPC.
4260 */
4261 APPLESTATIC int
4262 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
4263 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
4264 {
4265 struct nfsrv_descript nfsd, *nd = &nfsd;
4266 u_int32_t *tl;
4267 int error;
4268 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4269
4270 if (NFSHASNFSV4N(nmp)) {
4271 /* For NFSv4.1, do a FreeStateID. */
4272 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
4273 NULL);
4274 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
4275 } else {
4276 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
4277 NULL);
4278 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4279 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
4280 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
4281 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4282 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4283 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4284 }
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 error = nd->nd_repstat;
4291 mbuf_freem(nd->nd_mrep);
4292 return (error);
4293 }
4294
4295 /*
4296 * This function performs the Compound to get the mount pt FH.
4297 */
4298 APPLESTATIC int
4299 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4300 NFSPROC_T *p)
4301 {
4302 u_int32_t *tl;
4303 struct nfsrv_descript nfsd;
4304 struct nfsrv_descript *nd = &nfsd;
4305 u_char *cp, *cp2;
4306 int error, cnt, len, setnil;
4307 u_int32_t *opcntp;
4308
4309 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL);
4310 cp = dirpath;
4311 cnt = 0;
4312 do {
4313 setnil = 0;
4314 while (*cp == '/')
4315 cp++;
4316 cp2 = cp;
4317 while (*cp2 != '\0' && *cp2 != '/')
4318 cp2++;
4319 if (*cp2 == '/') {
4320 setnil = 1;
4321 *cp2 = '\0';
4322 }
4323 if (cp2 != cp) {
4324 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4325 *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4326 nfsm_strtom(nd, cp, strlen(cp));
4327 cnt++;
4328 }
4329 if (setnil)
4330 *cp2++ = '/';
4331 cp = cp2;
4332 } while (*cp != '\0');
4333 if (NFSHASNFSV4N(nmp))
4334 /* Has a Sequence Op done by nfscl_reqstart(). */
4335 *opcntp = txdr_unsigned(3 + cnt);
4336 else
4337 *opcntp = txdr_unsigned(2 + cnt);
4338 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4339 *tl = txdr_unsigned(NFSV4OP_GETFH);
4340 nd->nd_flag |= ND_USEGSSNAME;
4341 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4342 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4343 if (error)
4344 return (error);
4345 if (nd->nd_repstat == 0) {
4346 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4347 tl += (2 + 2 * cnt);
4348 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4349 len > NFSX_FHMAX) {
4350 nd->nd_repstat = NFSERR_BADXDR;
4351 } else {
4352 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4353 if (nd->nd_repstat == 0)
4354 nmp->nm_fhsize = len;
4355 }
4356 }
4357 error = nd->nd_repstat;
4358 nfsmout:
4359 mbuf_freem(nd->nd_mrep);
4360 return (error);
4361 }
4362
4363 /*
4364 * This function performs the Delegreturn RPC.
4365 */
4366 APPLESTATIC int
4367 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4368 struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4369 {
4370 u_int32_t *tl;
4371 struct nfsrv_descript nfsd;
4372 struct nfsrv_descript *nd = &nfsd;
4373 int error;
4374
4375 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4376 dp->nfsdl_fhlen, NULL, NULL);
4377 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4378 if (NFSHASNFSV4N(nmp))
4379 *tl++ = 0;
4380 else
4381 *tl++ = dp->nfsdl_stateid.seqid;
4382 *tl++ = dp->nfsdl_stateid.other[0];
4383 *tl++ = dp->nfsdl_stateid.other[1];
4384 *tl = dp->nfsdl_stateid.other[2];
4385 if (syscred)
4386 nd->nd_flag |= ND_USEGSSNAME;
4387 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4388 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4389 if (error)
4390 return (error);
4391 error = nd->nd_repstat;
4392 mbuf_freem(nd->nd_mrep);
4393 return (error);
4394 }
4395
4396 /*
4397 * nfs getacl call.
4398 */
4399 APPLESTATIC int
4400 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4401 struct acl *aclp, void *stuff)
4402 {
4403 struct nfsrv_descript nfsd, *nd = &nfsd;
4404 int error;
4405 nfsattrbit_t attrbits;
4406 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4407
4408 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4409 return (EOPNOTSUPP);
4410 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4411 NFSZERO_ATTRBIT(&attrbits);
4412 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4413 (void) nfsrv_putattrbit(nd, &attrbits);
4414 error = nfscl_request(nd, vp, p, cred, stuff);
4415 if (error)
4416 return (error);
4417 if (!nd->nd_repstat)
4418 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4419 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4420 else
4421 error = nd->nd_repstat;
4422 mbuf_freem(nd->nd_mrep);
4423 return (error);
4424 }
4425
4426 /*
4427 * nfs setacl call.
4428 */
4429 APPLESTATIC int
4430 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4431 struct acl *aclp, void *stuff)
4432 {
4433 int error;
4434 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4435
4436 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4437 return (EOPNOTSUPP);
4438 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4439 return (error);
4440 }
4441
4442 /*
4443 * nfs setacl call.
4444 */
4445 static int
4446 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4447 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4448 {
4449 struct nfsrv_descript nfsd, *nd = &nfsd;
4450 int error;
4451 nfsattrbit_t attrbits;
4452 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4453
4454 if (!NFSHASNFSV4(nmp))
4455 return (EOPNOTSUPP);
4456 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4457 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4458 NFSZERO_ATTRBIT(&attrbits);
4459 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4460 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
4461 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
4462 error = nfscl_request(nd, vp, p, cred, stuff);
4463 if (error)
4464 return (error);
4465 /* Don't care about the pre/postop attributes */
4466 mbuf_freem(nd->nd_mrep);
4467 return (nd->nd_repstat);
4468 }
4469
4470 /*
4471 * Do the NFSv4.1 Exchange ID.
4472 */
4473 int
4474 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp,
4475 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp,
4476 struct ucred *cred, NFSPROC_T *p)
4477 {
4478 uint32_t *tl, v41flags;
4479 struct nfsrv_descript nfsd;
4480 struct nfsrv_descript *nd = &nfsd;
4481 struct nfsclds *dsp;
4482 struct timespec verstime;
4483 int error, len;
4484
4485 *dspp = NULL;
4486 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL);
4487 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4488 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */
4489 *tl = txdr_unsigned(clp->nfsc_rev);
4490 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
4491
4492 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4493 *tl++ = txdr_unsigned(exchflags);
4494 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE);
4495
4496 /* Set the implementation id4 */
4497 *tl = txdr_unsigned(1);
4498 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org"));
4499 (void) nfsm_strtom(nd, version, strlen(version));
4500 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME);
4501 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */
4502 verstime.tv_nsec = 0;
4503 txdr_nfsv4time(&verstime, tl);
4504 nd->nd_flag |= ND_USEGSSNAME;
4505 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4506 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4507 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error,
4508 (int)nd->nd_repstat);
4509 if (error != 0)
4510 return (error);
4511 if (nd->nd_repstat == 0) {
4512 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER);
4513 len = fxdr_unsigned(int, *(tl + 7));
4514 if (len < 0 || len > NFSV4_OPAQUELIMIT) {
4515 error = NFSERR_BADXDR;
4516 goto nfsmout;
4517 }
4518 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS,
4519 M_WAITOK | M_ZERO);
4520 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
4521 dsp->nfsclds_servownlen = len;
4522 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++;
4523 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++;
4524 dsp->nfsclds_sess.nfsess_sequenceid =
4525 fxdr_unsigned(uint32_t, *tl++);
4526 v41flags = fxdr_unsigned(uint32_t, *tl);
4527 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 &&
4528 NFSHASPNFSOPT(nmp)) {
4529 NFSCL_DEBUG(1, "set PNFS\n");
4530 NFSLOCKMNT(nmp);
4531 nmp->nm_state |= NFSSTA_PNFS;
4532 NFSUNLOCKMNT(nmp);
4533 dsp->nfsclds_flags |= NFSCLDS_MDS;
4534 }
4535 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0)
4536 dsp->nfsclds_flags |= NFSCLDS_DS;
4537 if (len > 0)
4538 nd->nd_repstat = nfsrv_mtostr(nd,
4539 dsp->nfsclds_serverown, len);
4540 if (nd->nd_repstat == 0) {
4541 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
4542 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
4543 NULL, MTX_DEF);
4544 nfscl_initsessionslots(&dsp->nfsclds_sess);
4545 *dspp = dsp;
4546 } else
4547 free(dsp, M_NFSCLDS);
4548 }
4549 error = nd->nd_repstat;
4550 nfsmout:
4551 mbuf_freem(nd->nd_mrep);
4552 return (error);
4553 }
4554
4555 /*
4556 * Do the NFSv4.1 Create Session.
4557 */
4558 int
4559 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
4560 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred,
4561 NFSPROC_T *p)
4562 {
4563 uint32_t crflags, *tl;
4564 struct nfsrv_descript nfsd;
4565 struct nfsrv_descript *nd = &nfsd;
4566 int error, irdcnt;
4567
4568 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL);
4569 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
4570 *tl++ = sep->nfsess_clientid.lval[0];
4571 *tl++ = sep->nfsess_clientid.lval[1];
4572 *tl++ = txdr_unsigned(sequenceid);
4573 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST);
4574 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0)
4575 crflags |= NFSV4CRSESS_CONNBACKCHAN;
4576 *tl = txdr_unsigned(crflags);
4577
4578 /* Fill in fore channel attributes. */
4579 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4580 *tl++ = 0; /* Header pad size */
4581 *tl++ = txdr_unsigned(100000); /* Max request size */
4582 *tl++ = txdr_unsigned(100000); /* Max response size */
4583 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4584 *tl++ = txdr_unsigned(20); /* Max operations */
4585 *tl++ = txdr_unsigned(64); /* Max slots */
4586 *tl = 0; /* No rdma ird */
4587
4588 /* Fill in back channel attributes. */
4589 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4590 *tl++ = 0; /* Header pad size */
4591 *tl++ = txdr_unsigned(10000); /* Max request size */
4592 *tl++ = txdr_unsigned(10000); /* Max response size */
4593 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4594 *tl++ = txdr_unsigned(4); /* Max operations */
4595 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */
4596 *tl = 0; /* No rdma ird */
4597
4598 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED);
4599 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */
4600
4601 /* Allow AUTH_SYS callbacks as uid, gid == 0. */
4602 *tl++ = txdr_unsigned(1); /* Auth_sys only */
4603 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */
4604 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */
4605 *tl++ = 0; /* Null machine name */
4606 *tl++ = 0; /* Uid == 0 */
4607 *tl++ = 0; /* Gid == 0 */
4608 *tl = 0; /* No additional gids */
4609 nd->nd_flag |= ND_USEGSSNAME;
4610 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG,
4611 NFS_VER4, NULL, 1, NULL, NULL);
4612 if (error != 0)
4613 return (error);
4614 if (nd->nd_repstat == 0) {
4615 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
4616 2 * NFSX_UNSIGNED);
4617 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID);
4618 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
4619 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++);
4620 crflags = fxdr_unsigned(uint32_t, *tl);
4621 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) {
4622 NFSLOCKMNT(nmp);
4623 nmp->nm_state |= NFSSTA_SESSPERSIST;
4624 NFSUNLOCKMNT(nmp);
4625 }
4626
4627 /* Get the fore channel slot count. */
4628 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4629 tl += 3; /* Skip the other counts. */
4630 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++);
4631 tl++;
4632 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++);
4633 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots);
4634 irdcnt = fxdr_unsigned(int, *tl);
4635 if (irdcnt > 0)
4636 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED);
4637
4638 /* and the back channel slot count. */
4639 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4640 tl += 5;
4641 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl);
4642 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots);
4643 }
4644 error = nd->nd_repstat;
4645 nfsmout:
4646 mbuf_freem(nd->nd_mrep);
4647 return (error);
4648 }
4649
4650 /*
4651 * Do the NFSv4.1 Destroy Session.
4652 */
4653 int
4654 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp,
4655 struct ucred *cred, NFSPROC_T *p)
4656 {
4657 uint32_t *tl;
4658 struct nfsrv_descript nfsd;
4659 struct nfsrv_descript *nd = &nfsd;
4660 int error;
4661
4662 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL);
4663 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID);
4664 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID);
4665 nd->nd_flag |= ND_USEGSSNAME;
4666 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4667 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4668 if (error != 0)
4669 return (error);
4670 error = nd->nd_repstat;
4671 mbuf_freem(nd->nd_mrep);
4672 return (error);
4673 }
4674
4675 /*
4676 * Do the NFSv4.1 Destroy Client.
4677 */
4678 int
4679 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp,
4680 struct ucred *cred, NFSPROC_T *p)
4681 {
4682 uint32_t *tl;
4683 struct nfsrv_descript nfsd;
4684 struct nfsrv_descript *nd = &nfsd;
4685 int error;
4686
4687 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL);
4688 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4689 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0];
4690 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1];
4691 nd->nd_flag |= ND_USEGSSNAME;
4692 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4693 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4694 if (error != 0)
4695 return (error);
4696 error = nd->nd_repstat;
4697 mbuf_freem(nd->nd_mrep);
4698 return (error);
4699 }
4700
4701 /*
4702 * Do the NFSv4.1 LayoutGet.
4703 */
4704 int
4705 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
4706 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen,
4707 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp,
4708 struct ucred *cred, NFSPROC_T *p, void *stuff)
4709 {
4710 uint32_t *tl;
4711 struct nfsrv_descript nfsd, *nd = &nfsd;
4712 struct nfsfh *nfhp;
4713 struct nfsclflayout *flp, *prevflp, *tflp;
4714 int cnt, error, gotiomode, fhcnt, nfhlen, i, j;
4715 uint8_t *cp;
4716 uint64_t retlen;
4717
4718 flp = NULL;
4719 gotiomode = -1;
4720 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL);
4721 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
4722 NFSX_STATEID);
4723 *tl++ = newnfs_false; /* Don't signal availability. */
4724 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES);
4725 *tl++ = txdr_unsigned(iomode);
4726 txdr_hyper(offset, tl);
4727 tl += 2;
4728 txdr_hyper(len, tl);
4729 tl += 2;
4730 txdr_hyper(minlen, tl);
4731 tl += 2;
4732 *tl++ = txdr_unsigned(stateidp->seqid);
4733 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid);
4734 *tl++ = stateidp->other[0];
4735 *tl++ = stateidp->other[1];
4736 *tl++ = stateidp->other[2];
4737 *tl = txdr_unsigned(layoutlen);
4738 nd->nd_flag |= ND_USEGSSNAME;
4739 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4740 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4741 if (error != 0)
4742 return (error);
4743 if (nd->nd_repstat == 0) {
4744 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID);
4745 if (*tl++ != 0)
4746 *retonclosep = 1;
4747 else
4748 *retonclosep = 0;
4749 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
4750 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep,
4751 (int)stateidp->seqid);
4752 stateidp->other[0] = *tl++;
4753 stateidp->other[1] = *tl++;
4754 stateidp->other[2] = *tl++;
4755 cnt = fxdr_unsigned(int, *tl);
4756 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt);
4757 if (cnt <= 0 || cnt > 10000) {
4758 /* Don't accept more than 10000 layouts in reply. */
4759 error = NFSERR_BADXDR;
4760 goto nfsmout;
4761 }
4762 for (i = 0; i < cnt; i++) {
4763 /* Dissect all the way to the file handle cnt. */
4764 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER +
4765 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID);
4766 fhcnt = fxdr_unsigned(int, *(tl + 11 +
4767 NFSX_V4DEVICEID / NFSX_UNSIGNED));
4768 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
4769 if (fhcnt < 0 || fhcnt > 100) {
4770 /* Don't accept more than 100 file handles. */
4771 error = NFSERR_BADXDR;
4772 goto nfsmout;
4773 }
4774 if (fhcnt > 1)
4775 flp = malloc(sizeof(*flp) + (fhcnt - 1) *
4776 sizeof(struct nfsfh *),
4777 M_NFSFLAYOUT, M_WAITOK);
4778 else
4779 flp = malloc(sizeof(*flp),
4780 M_NFSFLAYOUT, M_WAITOK);
4781 flp->nfsfl_flags = 0;
4782 flp->nfsfl_fhcnt = 0;
4783 flp->nfsfl_devp = NULL;
4784 flp->nfsfl_off = fxdr_hyper(tl); tl += 2;
4785 retlen = fxdr_hyper(tl); tl += 2;
4786 if (flp->nfsfl_off + retlen < flp->nfsfl_off)
4787 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
4788 else
4789 flp->nfsfl_end = flp->nfsfl_off + retlen;
4790 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++);
4791 if (gotiomode == -1)
4792 gotiomode = flp->nfsfl_iomode;
4793 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode,
4794 (int)flp->nfsfl_iomode);
4795 if (fxdr_unsigned(int, *tl++) !=
4796 NFSLAYOUT_NFSV4_1_FILES) {
4797 printf("NFSv4.1: got non-files layout\n");
4798 error = NFSERR_BADXDR;
4799 goto nfsmout;
4800 }
4801 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID);
4802 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4803 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++);
4804 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util);
4805 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
4806 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
4807 if (fxdr_unsigned(int, *tl) != fhcnt) {
4808 printf("EEK! bad fhcnt\n");
4809 error = NFSERR_BADXDR;
4810 goto nfsmout;
4811 }
4812 for (j = 0; j < fhcnt; j++) {
4813 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4814 nfhlen = fxdr_unsigned(int, *tl);
4815 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) {
4816 error = NFSERR_BADXDR;
4817 goto nfsmout;
4818 }
4819 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1,
4820 M_NFSFH, M_WAITOK);
4821 flp->nfsfl_fh[j] = nfhp;
4822 flp->nfsfl_fhcnt++;
4823 nfhp->nfh_len = nfhlen;
4824 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen));
4825 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen);
4826 }
4827 if (flp->nfsfl_iomode == gotiomode) {
4828 /* Keep the list in increasing offset order. */
4829 tflp = LIST_FIRST(flhp);
4830 prevflp = NULL;
4831 while (tflp != NULL &&
4832 tflp->nfsfl_off < flp->nfsfl_off) {
4833 prevflp = tflp;
4834 tflp = LIST_NEXT(tflp, nfsfl_list);
4835 }
4836 if (prevflp == NULL)
4837 LIST_INSERT_HEAD(flhp, flp, nfsfl_list);
4838 else
4839 LIST_INSERT_AFTER(prevflp, flp,
4840 nfsfl_list);
4841 } else {
4842 printf("nfscl_layoutget(): got wrong iomode\n");
4843 nfscl_freeflayout(flp);
4844 }
4845 flp = NULL;
4846 }
4847 }
4848 if (nd->nd_repstat != 0 && error == 0)
4849 error = nd->nd_repstat;
4850 nfsmout:
4851 if (error != 0 && flp != NULL)
4852 nfscl_freeflayout(flp);
4853 mbuf_freem(nd->nd_mrep);
4854 return (error);
4855 }
4856
4857 /*
4858 * Do the NFSv4.1 Get Device Info.
4859 */
4860 int
4861 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype,
4862 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred,
4863 NFSPROC_T *p)
4864 {
4865 uint32_t cnt, *tl;
4866 struct nfsrv_descript nfsd;
4867 struct nfsrv_descript *nd = &nfsd;
4868 struct sockaddr_storage ss;
4869 struct nfsclds *dsp = NULL, **dspp;
4870 struct nfscldevinfo *ndi;
4871 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt;
4872 uint8_t stripeindex;
4873
4874 *ndip = NULL;
4875 ndi = NULL;
4876 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL);
4877 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
4878 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID);
4879 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4880 *tl++ = txdr_unsigned(layouttype);
4881 *tl++ = txdr_unsigned(100000);
4882 if (notifybitsp != NULL && *notifybitsp != 0) {
4883 *tl = txdr_unsigned(1); /* One word of bits. */
4884 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
4885 *tl = txdr_unsigned(*notifybitsp);
4886 } else
4887 *tl = txdr_unsigned(0);
4888 nd->nd_flag |= ND_USEGSSNAME;
4889 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4890 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4891 if (error != 0)
4892 return (error);
4893 if (nd->nd_repstat == 0) {
4894 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4895 if (layouttype != fxdr_unsigned(int, *tl++))
4896 printf("EEK! devinfo layout type not same!\n");
4897 stripecnt = fxdr_unsigned(int, *++tl);
4898 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
4899 if (stripecnt < 1 || stripecnt > 4096) {
4900 printf("NFS devinfo stripecnt %d: out of range\n",
4901 stripecnt);
4902 error = NFSERR_BADXDR;
4903 goto nfsmout;
4904 }
4905 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED);
4906 addrcnt = fxdr_unsigned(int, *(tl + stripecnt));
4907 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt);
4908 if (addrcnt < 1 || addrcnt > 128) {
4909 printf("NFS devinfo addrcnt %d: out of range\n",
4910 addrcnt);
4911 error = NFSERR_BADXDR;
4912 goto nfsmout;
4913 }
4914
4915 /*
4916 * Now we know how many stripe indices and addresses, so
4917 * we can allocate the structure the correct size.
4918 */
4919 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *)
4920 + 1;
4921 NFSCL_DEBUG(4, "stripeindices=%d\n", i);
4922 ndi = malloc(sizeof(*ndi) + (addrcnt + i) *
4923 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO);
4924 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID);
4925 ndi->nfsdi_refcnt = 0;
4926 ndi->nfsdi_stripecnt = stripecnt;
4927 ndi->nfsdi_addrcnt = addrcnt;
4928 /* Fill in the stripe indices. */
4929 for (i = 0; i < stripecnt; i++) {
4930 stripeindex = fxdr_unsigned(uint8_t, *tl++);
4931 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex);
4932 if (stripeindex >= addrcnt) {
4933 printf("NFS devinfo stripeindex %d: too big\n",
4934 (int)stripeindex);
4935 error = NFSERR_BADXDR;
4936 goto nfsmout;
4937 }
4938 nfsfldi_setstripeindex(ndi, i, stripeindex);
4939 }
4940
4941 /* Now, dissect the server address(es). */
4942 safilled = 0;
4943 for (i = 0; i < addrcnt; i++) {
4944 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4945 cnt = fxdr_unsigned(uint32_t, *tl);
4946 if (cnt == 0) {
4947 printf("NFS devinfo 0 len addrlist\n");
4948 error = NFSERR_BADXDR;
4949 goto nfsmout;
4950 }
4951 dspp = nfsfldi_addr(ndi, i);
4952 pos = arc4random() % cnt; /* Choose one. */
4953 safilled = 0;
4954 for (j = 0; j < cnt; j++) {
4955 error = nfsv4_getipaddr(nd, &ss, &isudp);
4956 if (error != 0 && error != EPERM) {
4957 error = NFSERR_BADXDR;
4958 goto nfsmout;
4959 }
4960 if (error == 0 && isudp == 0) {
4961 /*
4962 * The algorithm is:
4963 * - use "pos" entry if it is of the
4964 * same af_family or none of them
4965 * is of the same af_family
4966 * else
4967 * - use the first one of the same
4968 * af_family.
4969 */
4970 if ((safilled == 0 && ss.ss_family ==
4971 nmp->nm_nam->sa_family) ||
4972 (j == pos &&
4973 (safilled == 0 || ss.ss_family ==
4974 nmp->nm_nam->sa_family)) ||
4975 (safilled == 1 && ss.ss_family ==
4976 nmp->nm_nam->sa_family)) {
4977 error = nfsrpc_fillsa(nmp, &ss,
4978 &dsp, p);
4979 if (error == 0) {
4980 *dspp = dsp;
4981 if (ss.ss_family ==
4982 nmp->nm_nam->sa_family)
4983 safilled = 2;
4984 else
4985 safilled = 1;
4986 }
4987 }
4988 }
4989 }
4990 if (safilled == 0)
4991 break;
4992 }
4993
4994 /* And the notify bits. */
4995 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4996 if (safilled != 0) {
4997 bitcnt = fxdr_unsigned(int, *tl);
4998 if (bitcnt > 0) {
4999 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5000 if (notifybitsp != NULL)
5001 *notifybitsp =
5002 fxdr_unsigned(uint32_t, *tl);
5003 }
5004 *ndip = ndi;
5005 } else
5006 error = EPERM;
5007 }
5008 if (nd->nd_repstat != 0)
5009 error = nd->nd_repstat;
5010 nfsmout:
5011 if (error != 0 && ndi != NULL)
5012 nfscl_freedevinfo(ndi);
5013 mbuf_freem(nd->nd_mrep);
5014 return (error);
5015 }
5016
5017 /*
5018 * Do the NFSv4.1 LayoutCommit.
5019 */
5020 int
5021 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5022 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp,
5023 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred,
5024 NFSPROC_T *p, void *stuff)
5025 {
5026 uint32_t *tl;
5027 struct nfsrv_descript nfsd, *nd = &nfsd;
5028 int error, outcnt, i;
5029 uint8_t *cp;
5030
5031 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL);
5032 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
5033 NFSX_STATEID);
5034 txdr_hyper(off, tl);
5035 tl += 2;
5036 txdr_hyper(len, tl);
5037 tl += 2;
5038 if (reclaim != 0)
5039 *tl++ = newnfs_true;
5040 else
5041 *tl++ = newnfs_false;
5042 *tl++ = txdr_unsigned(stateidp->seqid);
5043 *tl++ = stateidp->other[0];
5044 *tl++ = stateidp->other[1];
5045 *tl++ = stateidp->other[2];
5046 *tl++ = newnfs_true;
5047 if (lastbyte < off)
5048 lastbyte = off;
5049 else if (lastbyte >= (off + len))
5050 lastbyte = off + len - 1;
5051 txdr_hyper(lastbyte, tl);
5052 tl += 2;
5053 *tl++ = newnfs_false;
5054 *tl++ = txdr_unsigned(layouttype);
5055 *tl = txdr_unsigned(layoutupdatecnt);
5056 if (layoutupdatecnt > 0) {
5057 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES,
5058 ("Must be nil for Files Layout"));
5059 outcnt = NFSM_RNDUP(layoutupdatecnt);
5060 NFSM_BUILD(cp, uint8_t *, outcnt);
5061 NFSBCOPY(layp, cp, layoutupdatecnt);
5062 cp += layoutupdatecnt;
5063 for (i = 0; i < (outcnt - layoutupdatecnt); i++)
5064 *cp++ = 0x0;
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 error = nd->nd_repstat;
5072 mbuf_freem(nd->nd_mrep);
5073 return (error);
5074 }
5075
5076 /*
5077 * Do the NFSv4.1 LayoutReturn.
5078 */
5079 int
5080 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5081 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset,
5082 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp,
5083 struct ucred *cred, NFSPROC_T *p, void *stuff)
5084 {
5085 uint32_t *tl;
5086 struct nfsrv_descript nfsd, *nd = &nfsd;
5087 int error, outcnt, i;
5088 uint8_t *cp;
5089
5090 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL);
5091 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
5092 if (reclaim != 0)
5093 *tl++ = newnfs_true;
5094 else
5095 *tl++ = newnfs_false;
5096 *tl++ = txdr_unsigned(layouttype);
5097 *tl++ = txdr_unsigned(iomode);
5098 *tl = txdr_unsigned(layoutreturn);
5099 if (layoutreturn == NFSLAYOUTRETURN_FILE) {
5100 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
5101 NFSX_UNSIGNED);
5102 txdr_hyper(offset, tl);
5103 tl += 2;
5104 txdr_hyper(len, tl);
5105 tl += 2;
5106 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid);
5107 *tl++ = txdr_unsigned(stateidp->seqid);
5108 *tl++ = stateidp->other[0];
5109 *tl++ = stateidp->other[1];
5110 *tl++ = stateidp->other[2];
5111 *tl = txdr_unsigned(layoutcnt);
5112 if (layoutcnt > 0) {
5113 outcnt = NFSM_RNDUP(layoutcnt);
5114 NFSM_BUILD(cp, uint8_t *, outcnt);
5115 NFSBCOPY(layp, cp, layoutcnt);
5116 cp += layoutcnt;
5117 for (i = 0; i < (outcnt - layoutcnt); i++)
5118 *cp++ = 0x0;
5119 }
5120 }
5121 nd->nd_flag |= ND_USEGSSNAME;
5122 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5123 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5124 if (error != 0)
5125 return (error);
5126 if (nd->nd_repstat == 0) {
5127 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5128 if (*tl != 0) {
5129 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
5130 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
5131 stateidp->other[0] = *tl++;
5132 stateidp->other[1] = *tl++;
5133 stateidp->other[2] = *tl;
5134 }
5135 } else
5136 error = nd->nd_repstat;
5137 nfsmout:
5138 mbuf_freem(nd->nd_mrep);
5139 return (error);
5140 }
5141
5142 /*
5143 * Acquire a layout and devinfo, if possible. The caller must have acquired
5144 * a reference count on the nfsclclient structure before calling this.
5145 * Return the layout in lypp with a reference count on it, if successful.
5146 */
5147 static int
5148 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp,
5149 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off,
5150 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
5151 {
5152 struct nfscllayout *lyp;
5153 struct nfsclflayout *flp, *tflp;
5154 struct nfscldevinfo *dip;
5155 struct nfsclflayouthead flh;
5156 int error = 0, islocked, layoutlen, recalled, retonclose;
5157 nfsv4stateid_t stateid;
5158
5159 *lypp = NULL;
5160 /*
5161 * If lyp is returned non-NULL, there will be a refcnt (shared lock)
5162 * on it, iff flp != NULL or a lock (exclusive lock) on it iff
5163 * flp == NULL.
5164 */
5165 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len,
5166 off, &flp, &recalled);
5167 islocked = 0;
5168 if (lyp == NULL || flp == NULL) {
5169 if (recalled != 0)
5170 return (EIO);
5171 LIST_INIT(&flh);
5172 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache -
5173 (NFSX_STATEID + 3 * NFSX_UNSIGNED);
5174 if (lyp == NULL) {
5175 stateid.seqid = 0;
5176 stateid.other[0] = stateidp->other[0];
5177 stateid.other[1] = stateidp->other[1];
5178 stateid.other[2] = stateidp->other[2];
5179 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5180 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX,
5181 (uint64_t)0, layoutlen, &stateid, &retonclose,
5182 &flh, cred, p, NULL);
5183 } else {
5184 islocked = 1;
5185 stateid.seqid = lyp->nfsly_stateid.seqid;
5186 stateid.other[0] = lyp->nfsly_stateid.other[0];
5187 stateid.other[1] = lyp->nfsly_stateid.other[1];
5188 stateid.other[2] = lyp->nfsly_stateid.other[2];
5189 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5190 nfhp->nfh_len, iomode, off, INT64_MAX,
5191 (uint64_t)0, layoutlen, &stateid, &retonclose,
5192 &flh, cred, p, NULL);
5193 }
5194 if (error == 0)
5195 LIST_FOREACH(tflp, &flh, nfsfl_list) {
5196 error = nfscl_adddevinfo(nmp, NULL, tflp);
5197 if (error != 0) {
5198 error = nfsrpc_getdeviceinfo(nmp,
5199 tflp->nfsfl_dev,
5200 NFSLAYOUT_NFSV4_1_FILES,
5201 notifybitsp, &dip, cred, p);
5202 if (error != 0)
5203 break;
5204 error = nfscl_adddevinfo(nmp, dip,
5205 tflp);
5206 if (error != 0)
5207 printf(
5208 "getlayout: cannot add\n");
5209 }
5210 }
5211 if (error == 0) {
5212 /*
5213 * nfscl_layout() always returns with the nfsly_lock
5214 * set to a refcnt (shared lock).
5215 */
5216 error = nfscl_layout(nmp, vp, nfhp->nfh_fh,
5217 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp,
5218 cred, p);
5219 if (error == 0)
5220 *lypp = lyp;
5221 } else if (islocked != 0)
5222 nfsv4_unlock(&lyp->nfsly_lock, 0);
5223 } else
5224 *lypp = lyp;
5225 return (error);
5226 }
5227
5228 /*
5229 * Do a TCP connection plus exchange id and create session.
5230 * If successful, a "struct nfsclds" is linked into the list for the
5231 * mount point and a pointer to it is returned.
5232 */
5233 static int
5234 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp,
5235 struct nfsclds **dspp, NFSPROC_T *p)
5236 {
5237 struct sockaddr_in *msad, *sad, *ssd;
5238 struct sockaddr_in6 *msad6, *sad6, *ssd6;
5239 struct nfsclclient *clp;
5240 struct nfssockreq *nrp;
5241 struct nfsclds *dsp, *tdsp;
5242 int error;
5243 enum nfsclds_state retv;
5244 uint32_t sequenceid;
5245
5246 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
5247 ("nfsrpc_fillsa: NULL nr_cred"));
5248 NFSLOCKCLSTATE();
5249 clp = nmp->nm_clp;
5250 NFSUNLOCKCLSTATE();
5251 if (clp == NULL)
5252 return (EPERM);
5253 if (ssp->ss_family == AF_INET) {
5254 ssd = (struct sockaddr_in *)ssp;
5255 NFSLOCKMNT(nmp);
5256
5257 /*
5258 * Check to see if we already have a session for this
5259 * address that is usable for a DS.
5260 * Note that the MDS's address is in a different place
5261 * than the sessions already acquired for DS's.
5262 */
5263 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam;
5264 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5265 while (tdsp != NULL) {
5266 if (msad != NULL && msad->sin_family == AF_INET &&
5267 ssd->sin_addr.s_addr == msad->sin_addr.s_addr &&
5268 ssd->sin_port == msad->sin_port &&
5269 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5270 *dspp = tdsp;
5271 NFSUNLOCKMNT(nmp);
5272 NFSCL_DEBUG(4, "fnd same addr\n");
5273 return (0);
5274 }
5275 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5276 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5277 msad = (struct sockaddr_in *)
5278 tdsp->nfsclds_sockp->nr_nam;
5279 else
5280 msad = NULL;
5281 }
5282 NFSUNLOCKMNT(nmp);
5283
5284 /* No IP address match, so look for new/trunked one. */
5285 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO);
5286 sad->sin_len = sizeof(*sad);
5287 sad->sin_family = AF_INET;
5288 sad->sin_port = ssd->sin_port;
5289 sad->sin_addr.s_addr = ssd->sin_addr.s_addr;
5290 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5291 nrp->nr_nam = (struct sockaddr *)sad;
5292 } else if (ssp->ss_family == AF_INET6) {
5293 ssd6 = (struct sockaddr_in6 *)ssp;
5294 NFSLOCKMNT(nmp);
5295
5296 /*
5297 * Check to see if we already have a session for this
5298 * address that is usable for a DS.
5299 * Note that the MDS's address is in a different place
5300 * than the sessions already acquired for DS's.
5301 */
5302 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam;
5303 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5304 while (tdsp != NULL) {
5305 if (msad6 != NULL && msad6->sin6_family == AF_INET6 &&
5306 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr,
5307 &msad6->sin6_addr) &&
5308 ssd6->sin6_port == msad6->sin6_port &&
5309 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5310 *dspp = tdsp;
5311 NFSUNLOCKMNT(nmp);
5312 return (0);
5313 }
5314 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5315 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5316 msad6 = (struct sockaddr_in6 *)
5317 tdsp->nfsclds_sockp->nr_nam;
5318 else
5319 msad6 = NULL;
5320 }
5321 NFSUNLOCKMNT(nmp);
5322
5323 /* No IP address match, so look for new/trunked one. */
5324 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO);
5325 sad6->sin6_len = sizeof(*sad6);
5326 sad6->sin6_family = AF_INET6;
5327 sad6->sin6_port = ssd6->sin6_port;
5328 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr,
5329 sizeof(struct in6_addr));
5330 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5331 nrp->nr_nam = (struct sockaddr *)sad6;
5332 } else
5333 return (EPERM);
5334
5335 nrp->nr_sotype = SOCK_STREAM;
5336 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF);
5337 nrp->nr_prog = NFS_PROG;
5338 nrp->nr_vers = NFS_VER4;
5339
5340 /*
5341 * Use the credentials that were used for the mount, which are
5342 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc.
5343 * Ref. counting the credentials with crhold() is probably not
5344 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until
5345 * unmount, but I did it anyhow.
5346 */
5347 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred);
5348 error = newnfs_connect(nmp, nrp, NULL, p, 0);
5349 NFSCL_DEBUG(3, "DS connect=%d\n", error);
5350
5351 /* Now, do the exchangeid and create session. */
5352 if (error == 0)
5353 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS,
5354 &dsp, nrp->nr_cred, p);
5355 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
5356 if (error == 0) {
5357 dsp->nfsclds_sockp = nrp;
5358 NFSLOCKMNT(nmp);
5359 retv = nfscl_getsameserver(nmp, dsp, &tdsp);
5360 NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
5361 if (retv == NFSDSP_USETHISSESSION) {
5362 NFSUNLOCKMNT(nmp);
5363 /*
5364 * If there is already a session for this server,
5365 * use it.
5366 */
5367 (void)newnfs_disconnect(nrp);
5368 nfscl_freenfsclds(dsp);
5369 *dspp = tdsp;
5370 return (0);
5371 }
5372 if (retv == NFSDSP_SEQTHISSESSION)
5373 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid;
5374 else
5375 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid;
5376 NFSUNLOCKMNT(nmp);
5377 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
5378 nrp, sequenceid, 0, nrp->nr_cred, p);
5379 NFSCL_DEBUG(3, "DS createsess=%d\n", error);
5380 } else {
5381 NFSFREECRED(nrp->nr_cred);
5382 NFSFREEMUTEX(&nrp->nr_mtx);
5383 free(nrp->nr_nam, M_SONAME);
5384 free(nrp, M_NFSSOCKREQ);
5385 }
5386 if (error == 0) {
5387 NFSCL_DEBUG(3, "add DS session\n");
5388 /*
5389 * Put it at the end of the list. That way the list
5390 * is ordered by when the entry was added. This matters
5391 * since the one done first is the one that should be
5392 * used for sequencid'ing any subsequent create sessions.
5393 */
5394 NFSLOCKMNT(nmp);
5395 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list);
5396 NFSUNLOCKMNT(nmp);
5397 *dspp = dsp;
5398 } else if (dsp != NULL)
5399 nfscl_freenfsclds(dsp);
5400 return (error);
5401 }
5402
5403 /*
5404 * Do the NFSv4.1 Reclaim Complete.
5405 */
5406 int
5407 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
5408 {
5409 uint32_t *tl;
5410 struct nfsrv_descript nfsd;
5411 struct nfsrv_descript *nd = &nfsd;
5412 int error;
5413
5414 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL);
5415 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
5416 *tl = newnfs_false;
5417 nd->nd_flag |= ND_USEGSSNAME;
5418 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5419 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5420 if (error != 0)
5421 return (error);
5422 error = nd->nd_repstat;
5423 mbuf_freem(nd->nd_mrep);
5424 return (error);
5425 }
5426
5427 /*
5428 * Initialize the slot tables for a session.
5429 */
5430 static void
5431 nfscl_initsessionslots(struct nfsclsession *sep)
5432 {
5433 int i;
5434
5435 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5436 if (sep->nfsess_cbslots[i].nfssl_reply != NULL)
5437 m_freem(sep->nfsess_cbslots[i].nfssl_reply);
5438 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot));
5439 }
5440 for (i = 0; i < 64; i++)
5441 sep->nfsess_slotseq[i] = 0;
5442 sep->nfsess_slots = 0;
5443 }
5444
5445 /*
5446 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS).
5447 */
5448 int
5449 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5450 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p)
5451 {
5452 struct nfsnode *np = VTONFS(vp);
5453 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5454 struct nfscllayout *layp;
5455 struct nfscldevinfo *dip;
5456 struct nfsclflayout *rflp;
5457 nfsv4stateid_t stateid;
5458 struct ucred *newcred;
5459 uint64_t lastbyte, len, off, oresid, xfer;
5460 int eof, error, iolaymode, recalled;
5461 void *lckp;
5462
5463 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
5464 (np->n_flag & NNOLAYOUT) != 0)
5465 return (EIO);
5466 /* Now, get a reference cnt on the clientid for this mount. */
5467 if (nfscl_getref(nmp) == 0)
5468 return (EIO);
5469
5470 /* Find an appropriate stateid. */
5471 newcred = NFSNEWCRED(cred);
5472 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
5473 rwaccess, 1, newcred, p, &stateid, &lckp);
5474 if (error != 0) {
5475 NFSFREECRED(newcred);
5476 nfscl_relref(nmp);
5477 return (error);
5478 }
5479 /* Search for a layout for this file. */
5480 off = uiop->uio_offset;
5481 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh,
5482 np->n_fhp->nfh_len, off, &rflp, &recalled);
5483 if (layp == NULL || rflp == NULL) {
5484 if (recalled != 0) {
5485 NFSFREECRED(newcred);
5486 nfscl_relref(nmp);
5487 return (EIO);
5488 }
5489 if (layp != NULL) {
5490 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0);
5491 layp = NULL;
5492 }
5493 /* Try and get a Layout, if it is supported. */
5494 if (rwaccess == NFSV4OPEN_ACCESSWRITE ||
5495 (np->n_flag & NWRITEOPENED) != 0)
5496 iolaymode = NFSLAYOUTIOMODE_RW;
5497 else
5498 iolaymode = NFSLAYOUTIOMODE_READ;
5499 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode,
5500 NULL, &stateid, off, &layp, newcred, p);
5501 if (error != 0) {
5502 NFSLOCKNODE(np);
5503 np->n_flag |= NNOLAYOUT;
5504 NFSUNLOCKNODE(np);
5505 if (lckp != NULL)
5506 nfscl_lockderef(lckp);
5507 NFSFREECRED(newcred);
5508 if (layp != NULL)
5509 nfscl_rellayout(layp, 0);
5510 nfscl_relref(nmp);
5511 return (error);
5512 }
5513 }
5514
5515 /*
5516 * Loop around finding a layout that works for the first part of
5517 * this I/O operation, and then call the function that actually
5518 * does the RPC.
5519 */
5520 eof = 0;
5521 len = (uint64_t)uiop->uio_resid;
5522 while (len > 0 && error == 0 && eof == 0) {
5523 off = uiop->uio_offset;
5524 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp);
5525 if (error == 0) {
5526 oresid = xfer = (uint64_t)uiop->uio_resid;
5527 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off))
5528 xfer = rflp->nfsfl_end - rflp->nfsfl_off;
5529 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev,
5530 rflp->nfsfl_devp);
5531 if (dip != NULL) {
5532 error = nfscl_doflayoutio(vp, uiop, iomode,
5533 must_commit, &eof, &stateid, rwaccess, dip,
5534 layp, rflp, off, xfer, newcred, p);
5535 nfscl_reldevinfo(dip);
5536 lastbyte = off + xfer - 1;
5537 if (error == 0) {
5538 NFSLOCKCLSTATE();
5539 if (lastbyte > layp->nfsly_lastbyte)
5540 layp->nfsly_lastbyte = lastbyte;
5541 NFSUNLOCKCLSTATE();
5542 }
5543 } else
5544 error = EIO;
5545 if (error == 0)
5546 len -= (oresid - (uint64_t)uiop->uio_resid);
5547 }
5548 }
5549 if (lckp != NULL)
5550 nfscl_lockderef(lckp);
5551 NFSFREECRED(newcred);
5552 nfscl_rellayout(layp, 0);
5553 nfscl_relref(nmp);
5554 return (error);
5555 }
5556
5557 /*
5558 * Find a file layout that will handle the first bytes of the requested
5559 * range and return the information from it needed to to the I/O operation.
5560 */
5561 int
5562 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,
5563 struct nfsclflayout **retflpp)
5564 {
5565 struct nfsclflayout *flp, *nflp, *rflp;
5566 uint32_t rw;
5567
5568 rflp = NULL;
5569 rw = rwaccess;
5570 /* For reading, do the Read list first and then the Write list. */
5571 do {
5572 if (rw == NFSV4OPEN_ACCESSREAD)
5573 flp = LIST_FIRST(&lyp->nfsly_flayread);
5574 else
5575 flp = LIST_FIRST(&lyp->nfsly_flayrw);
5576 while (flp != NULL) {
5577 nflp = LIST_NEXT(flp, nfsfl_list);
5578 if (flp->nfsfl_off > off)
5579 break;
5580 if (flp->nfsfl_end > off &&
5581 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end))
5582 rflp = flp;
5583 flp = nflp;
5584 }
5585 if (rw == NFSV4OPEN_ACCESSREAD)
5586 rw = NFSV4OPEN_ACCESSWRITE;
5587 else
5588 rw = 0;
5589 } while (rw != 0);
5590 if (rflp != NULL) {
5591 /* This one covers the most bytes starting at off. */
5592 *retflpp = rflp;
5593 return (0);
5594 }
5595 return (EIO);
5596 }
5597
5598 /*
5599 * Do I/O using an NFSv4.1 file layout.
5600 */
5601 static int
5602 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5603 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
5604 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
5605 uint64_t len, struct ucred *cred, NFSPROC_T *p)
5606 {
5607 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
5608 int commit_thru_mds, error = 0, stripe_index, stripe_pos;
5609 struct nfsnode *np;
5610 struct nfsfh *fhp;
5611 struct nfsclds **dspp;
5612
5613 np = VTONFS(vp);
5614 rel_off = off - flp->nfsfl_patoff;
5615 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff;
5616 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
5617 dp->nfsdi_stripecnt;
5618 transfer = stripe_unit_size - (rel_off % stripe_unit_size);
5619
5620 /* Loop around, doing I/O for each stripe unit. */
5621 while (len > 0 && error == 0) {
5622 stripe_index = nfsfldi_stripeindex(dp, stripe_pos);
5623 dspp = nfsfldi_addr(dp, stripe_index);
5624 if (len > transfer)
5625 xfer = transfer;
5626 else
5627 xfer = len;
5628 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) {
5629 /* Dense layout. */
5630 if (stripe_pos >= flp->nfsfl_fhcnt)
5631 return (EIO);
5632 fhp = flp->nfsfl_fh[stripe_pos];
5633 io_off = (rel_off / (stripe_unit_size *
5634 dp->nfsdi_stripecnt)) * stripe_unit_size +
5635 rel_off % stripe_unit_size;
5636 } else {
5637 /* Sparse layout. */
5638 if (flp->nfsfl_fhcnt > 1) {
5639 if (stripe_index >= flp->nfsfl_fhcnt)
5640 return (EIO);
5641 fhp = flp->nfsfl_fh[stripe_index];
5642 } else if (flp->nfsfl_fhcnt == 1)
5643 fhp = flp->nfsfl_fh[0];
5644 else
5645 fhp = np->n_fhp;
5646 io_off = off;
5647 }
5648 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0)
5649 commit_thru_mds = 1;
5650 else
5651 commit_thru_mds = 0;
5652 if (rwflag == FREAD)
5653 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
5654 io_off, xfer, fhp, cred, p);
5655 else {
5656 error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
5657 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
5658 cred, p);
5659 if (error == 0) {
5660 NFSLOCKCLSTATE();
5661 lyp->nfsly_flags |= NFSLY_WRITTEN;
5662 NFSUNLOCKCLSTATE();
5663 }
5664 }
5665 if (error == 0) {
5666 transfer = stripe_unit_size;
5667 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt;
5668 len -= xfer;
5669 off += xfer;
5670 }
5671 }
5672 return (error);
5673 }
5674
5675 /*
5676 * The actual read RPC done to a DS.
5677 */
5678 static int
5679 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp,
5680 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp,
5681 struct ucred *cred, NFSPROC_T *p)
5682 {
5683 uint32_t *tl;
5684 int error, retlen;
5685 struct nfsrv_descript nfsd;
5686 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5687 struct nfsrv_descript *nd = &nfsd;
5688 struct nfssockreq *nrp;
5689
5690 nd->nd_mrep = NULL;
5691 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5692 NULL, &dsp->nfsclds_sess);
5693 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
5694 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
5695 txdr_hyper(io_off, tl);
5696 *(tl + 2) = txdr_unsigned(len);
5697 nrp = dsp->nfsclds_sockp;
5698 if (nrp == NULL)
5699 /* If NULL, use the MDS socket. */
5700 nrp = &nmp->nm_sockreq;
5701 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5702 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5703 if (error != 0)
5704 return (error);
5705 if (nd->nd_repstat != 0) {
5706 error = nd->nd_repstat;
5707 goto nfsmout;
5708 }
5709 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5710 *eofp = fxdr_unsigned(int, *tl);
5711 NFSM_STRSIZ(retlen, len);
5712 error = nfsm_mbufuio(nd, uiop, retlen);
5713 nfsmout:
5714 if (nd->nd_mrep != NULL)
5715 mbuf_freem(nd->nd_mrep);
5716 return (error);
5717 }
5718
5719 /*
5720 * The actual write RPC done to a DS.
5721 */
5722 static int
5723 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5724 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
5725 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p)
5726 {
5727 uint32_t *tl;
5728 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5729 int error, rlen, commit, committed = NFSWRITE_FILESYNC;
5730 int32_t backup;
5731 struct nfsrv_descript nfsd;
5732 struct nfsrv_descript *nd = &nfsd;
5733 struct nfssockreq *nrp;
5734
5735 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
5736 nd->nd_mrep = NULL;
5737 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5738 NULL, &dsp->nfsclds_sess);
5739 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
5740 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
5741 txdr_hyper(io_off, tl);
5742 tl += 2;
5743 *tl++ = txdr_unsigned(*iomode);
5744 *tl = txdr_unsigned(len);
5745 nfsm_uiombuf(nd, uiop, len);
5746 nrp = dsp->nfsclds_sockp;
5747 if (nrp == NULL)
5748 /* If NULL, use the MDS socket. */
5749 nrp = &nmp->nm_sockreq;
5750 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5751 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5752 if (error != 0)
5753 return (error);
5754 if (nd->nd_repstat != 0) {
5755 /*
5756 * In case the rpc gets retried, roll
5757 * the uio fileds changed by nfsm_uiombuf()
5758 * back.
5759 */
5760 uiop->uio_offset -= len;
5761 uio_uio_resid_add(uiop, len);
5762 uio_iov_base_add(uiop, -len);
5763 uio_iov_len_add(uiop, len);
5764 error = nd->nd_repstat;
5765 } else {
5766 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
5767 rlen = fxdr_unsigned(int, *tl++);
5768 if (rlen == 0) {
5769 error = NFSERR_IO;
5770 goto nfsmout;
5771 } else if (rlen < len) {
5772 backup = len - rlen;
5773 uio_iov_base_add(uiop, -(backup));
5774 uio_iov_len_add(uiop, backup);
5775 uiop->uio_offset -= backup;
5776 uio_uio_resid_add(uiop, backup);
5777 len = rlen;
5778 }
5779 commit = fxdr_unsigned(int, *tl++);
5780
5781 /*
5782 * Return the lowest committment level
5783 * obtained by any of the RPCs.
5784 */
5785 if (committed == NFSWRITE_FILESYNC)
5786 committed = commit;
5787 else if (committed == NFSWRITE_DATASYNC &&
5788 commit == NFSWRITE_UNSTABLE)
5789 committed = commit;
5790 if (commit_thru_mds != 0) {
5791 NFSLOCKMNT(nmp);
5792 if (!NFSHASWRITEVERF(nmp)) {
5793 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
5794 NFSSETWRITEVERF(nmp);
5795 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
5796 *must_commit = 1;
5797 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
5798 }
5799 NFSUNLOCKMNT(nmp);
5800 } else {
5801 NFSLOCKDS(dsp);
5802 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
5803 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5804 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
5805 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
5806 *must_commit = 1;
5807 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5808 }
5809 NFSUNLOCKDS(dsp);
5810 }
5811 }
5812 nfsmout:
5813 if (nd->nd_mrep != NULL)
5814 mbuf_freem(nd->nd_mrep);
5815 *iomode = committed;
5816 if (nd->nd_repstat != 0 && error == 0)
5817 error = nd->nd_repstat;
5818 return (error);
5819 }
5820
5821 /*
5822 * Free up the nfsclds structure.
5823 */
5824 void
5825 nfscl_freenfsclds(struct nfsclds *dsp)
5826 {
5827 int i;
5828
5829 if (dsp == NULL)
5830 return;
5831 if (dsp->nfsclds_sockp != NULL) {
5832 NFSFREECRED(dsp->nfsclds_sockp->nr_cred);
5833 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx);
5834 free(dsp->nfsclds_sockp->nr_nam, M_SONAME);
5835 free(dsp->nfsclds_sockp, M_NFSSOCKREQ);
5836 }
5837 NFSFREEMUTEX(&dsp->nfsclds_mtx);
5838 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx);
5839 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5840 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL)
5841 m_freem(
5842 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply);
5843 }
5844 free(dsp, M_NFSCLDS);
5845 }
5846
5847 static enum nfsclds_state
5848 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp,
5849 struct nfsclds **retdspp)
5850 {
5851 struct nfsclds *dsp, *cur_dsp;
5852
5853 /*
5854 * Search the list of nfsclds structures for one with the same
5855 * server.
5856 */
5857 cur_dsp = NULL;
5858 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
5859 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen &&
5860 dsp->nfsclds_servownlen != 0 &&
5861 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown,
5862 dsp->nfsclds_servownlen)) {
5863 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
5864 TAILQ_FIRST(&nmp->nm_sess), dsp,
5865 dsp->nfsclds_flags);
5866 /* Server major id matches. */
5867 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5868 *retdspp = dsp;
5869 return (NFSDSP_USETHISSESSION);
5870 }
5871
5872 /*
5873 * Note the first match, so it can be used for
5874 * sequence'ing new sessions.
5875 */
5876 if (cur_dsp == NULL)
5877 cur_dsp = dsp;
5878 }
5879 }
5880 if (cur_dsp != NULL) {
5881 *retdspp = cur_dsp;
5882 return (NFSDSP_SEQTHISSESSION);
5883 }
5884 return (NFSDSP_NOTFOUND);
5885 }
5886
5887 #ifdef notyet
5888 /*
5889 * NFS commit rpc to a DS.
5890 */
5891 static int
5892 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
5893 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff)
5894 {
5895 uint32_t *tl;
5896 struct nfsrv_descript nfsd, *nd = &nfsd;
5897 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5898 struct nfssockreq *nrp;
5899 int error;
5900
5901 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5902 NULL, &dsp->nfsclds_sess);
5903 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
5904 txdr_hyper(offset, tl);
5905 tl += 2;
5906 *tl = txdr_unsigned(cnt);
5907 nrp = dsp->nfsclds_sockp;
5908 if (nrp == NULL)
5909 /* If NULL, use the MDS socket. */
5910 nrp = &nmp->nm_sockreq;
5911 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5912 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5913 if (error)
5914 return (error);
5915 if (nd->nd_repstat == 0) {
5916 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
5917 NFSLOCKDS(dsp);
5918 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
5919 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5920 error = NFSERR_STALEWRITEVERF;
5921 }
5922 NFSUNLOCKDS(dsp);
5923 }
5924 nfsmout:
5925 if (error == 0 && nd->nd_repstat != 0)
5926 error = nd->nd_repstat;
5927 mbuf_freem(nd->nd_mrep);
5928 return (error);
5929 }
5930 #endif
5931
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