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/11.1/sys/fs/nfsclient/nfs_clrpcops.c 318260 2017-05-14 00:12:29Z 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(nmp, 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 struct nfsclsession *tsep;
388
389 dp = *dpp;
390 *dpp = NULL;
391 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL);
392 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
393 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
394 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
395 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
396 tsep = nfsmnt_mdssession(nmp);
397 *tl++ = tsep->nfsess_clientid.lval[0];
398 *tl = tsep->nfsess_clientid.lval[1];
399 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
400 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
401 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
402 if (reclaim) {
403 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
404 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
405 *tl = txdr_unsigned(delegtype);
406 } else {
407 if (dp != NULL) {
408 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
409 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
410 if (NFSHASNFSV4N(nmp))
411 *tl++ = 0;
412 else
413 *tl++ = dp->nfsdl_stateid.seqid;
414 *tl++ = dp->nfsdl_stateid.other[0];
415 *tl++ = dp->nfsdl_stateid.other[1];
416 *tl = dp->nfsdl_stateid.other[2];
417 } else {
418 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
419 }
420 (void) nfsm_strtom(nd, name, namelen);
421 }
422 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
423 *tl = txdr_unsigned(NFSV4OP_GETATTR);
424 NFSZERO_ATTRBIT(&attrbits);
425 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
426 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
427 (void) nfsrv_putattrbit(nd, &attrbits);
428 if (syscred)
429 nd->nd_flag |= ND_USEGSSNAME;
430 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
431 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
432 if (error)
433 return (error);
434 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
435 if (!nd->nd_repstat) {
436 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
437 6 * NFSX_UNSIGNED);
438 op->nfso_stateid.seqid = *tl++;
439 op->nfso_stateid.other[0] = *tl++;
440 op->nfso_stateid.other[1] = *tl++;
441 op->nfso_stateid.other[2] = *tl;
442 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
443 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
444 if (error)
445 goto nfsmout;
446 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
447 deleg = fxdr_unsigned(u_int32_t, *tl);
448 if (deleg == NFSV4OPEN_DELEGATEREAD ||
449 deleg == NFSV4OPEN_DELEGATEWRITE) {
450 if (!(op->nfso_own->nfsow_clp->nfsc_flags &
451 NFSCLFLAGS_FIRSTDELEG))
452 op->nfso_own->nfsow_clp->nfsc_flags |=
453 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
454 MALLOC(ndp, struct nfscldeleg *,
455 sizeof (struct nfscldeleg) + newfhlen,
456 M_NFSCLDELEG, M_WAITOK);
457 LIST_INIT(&ndp->nfsdl_owner);
458 LIST_INIT(&ndp->nfsdl_lock);
459 ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
460 ndp->nfsdl_fhlen = newfhlen;
461 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
462 newnfs_copyincred(cred, &ndp->nfsdl_cred);
463 nfscl_lockinit(&ndp->nfsdl_rwlock);
464 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
465 NFSX_UNSIGNED);
466 ndp->nfsdl_stateid.seqid = *tl++;
467 ndp->nfsdl_stateid.other[0] = *tl++;
468 ndp->nfsdl_stateid.other[1] = *tl++;
469 ndp->nfsdl_stateid.other[2] = *tl++;
470 ret = fxdr_unsigned(int, *tl);
471 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
472 ndp->nfsdl_flags = NFSCLDL_WRITE;
473 /*
474 * Indicates how much the file can grow.
475 */
476 NFSM_DISSECT(tl, u_int32_t *,
477 3 * NFSX_UNSIGNED);
478 limitby = fxdr_unsigned(int, *tl++);
479 switch (limitby) {
480 case NFSV4OPEN_LIMITSIZE:
481 ndp->nfsdl_sizelimit = fxdr_hyper(tl);
482 break;
483 case NFSV4OPEN_LIMITBLOCKS:
484 ndp->nfsdl_sizelimit =
485 fxdr_unsigned(u_int64_t, *tl++);
486 ndp->nfsdl_sizelimit *=
487 fxdr_unsigned(u_int64_t, *tl);
488 break;
489 default:
490 error = NFSERR_BADXDR;
491 goto nfsmout;
492 }
493 } else {
494 ndp->nfsdl_flags = NFSCLDL_READ;
495 }
496 if (ret)
497 ndp->nfsdl_flags |= NFSCLDL_RECALL;
498 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
499 &acesize, p);
500 if (error)
501 goto nfsmout;
502 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
503 error = NFSERR_BADXDR;
504 goto nfsmout;
505 }
506 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
507 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
508 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
509 NULL, NULL, NULL, p, cred);
510 if (error)
511 goto nfsmout;
512 if (ndp != NULL) {
513 ndp->nfsdl_change = nfsva.na_filerev;
514 ndp->nfsdl_modtime = nfsva.na_mtime;
515 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
516 }
517 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
518 do {
519 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
520 cred, p);
521 if (ret == NFSERR_DELAY)
522 (void) nfs_catnap(PZERO, ret, "nfs_open");
523 } while (ret == NFSERR_DELAY);
524 error = ret;
525 }
526 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
527 nfscl_assumeposixlocks)
528 op->nfso_posixlock = 1;
529 else
530 op->nfso_posixlock = 0;
531
532 /*
533 * If the server is handing out delegations, but we didn't
534 * get one because an OpenConfirm was required, try the
535 * Open again, to get a delegation. This is a harmless no-op,
536 * from a server's point of view.
537 */
538 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
539 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
540 && !error && dp == NULL && ndp == NULL && !recursed) {
541 do {
542 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
543 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
544 cred, p, syscred, 1);
545 if (ret == NFSERR_DELAY)
546 (void) nfs_catnap(PZERO, ret, "nfs_open2");
547 } while (ret == NFSERR_DELAY);
548 if (ret) {
549 if (ndp != NULL) {
550 FREE((caddr_t)ndp, M_NFSCLDELEG);
551 ndp = NULL;
552 }
553 if (ret == NFSERR_STALECLIENTID ||
554 ret == NFSERR_STALEDONTRECOVER ||
555 ret == NFSERR_BADSESSION)
556 error = ret;
557 }
558 }
559 }
560 if (nd->nd_repstat != 0 && error == 0)
561 error = nd->nd_repstat;
562 if (error == NFSERR_STALECLIENTID)
563 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
564 nfsmout:
565 if (!error)
566 *dpp = ndp;
567 else if (ndp != NULL)
568 FREE((caddr_t)ndp, M_NFSCLDELEG);
569 mbuf_freem(nd->nd_mrep);
570 return (error);
571 }
572
573 /*
574 * open downgrade rpc
575 */
576 APPLESTATIC int
577 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
578 struct ucred *cred, NFSPROC_T *p)
579 {
580 u_int32_t *tl;
581 struct nfsrv_descript nfsd, *nd = &nfsd;
582 int error;
583
584 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
585 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
586 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp))))
587 *tl++ = 0;
588 else
589 *tl++ = op->nfso_stateid.seqid;
590 *tl++ = op->nfso_stateid.other[0];
591 *tl++ = op->nfso_stateid.other[1];
592 *tl++ = op->nfso_stateid.other[2];
593 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
594 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
595 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
596 error = nfscl_request(nd, vp, p, cred, NULL);
597 if (error)
598 return (error);
599 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
600 if (!nd->nd_repstat) {
601 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
602 op->nfso_stateid.seqid = *tl++;
603 op->nfso_stateid.other[0] = *tl++;
604 op->nfso_stateid.other[1] = *tl++;
605 op->nfso_stateid.other[2] = *tl;
606 }
607 if (nd->nd_repstat && error == 0)
608 error = nd->nd_repstat;
609 if (error == NFSERR_STALESTATEID)
610 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
611 nfsmout:
612 mbuf_freem(nd->nd_mrep);
613 return (error);
614 }
615
616 /*
617 * V4 Close operation.
618 */
619 APPLESTATIC int
620 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
621 {
622 struct nfsclclient *clp;
623 int error;
624
625 if (vnode_vtype(vp) != VREG)
626 return (0);
627 if (doclose)
628 error = nfscl_doclose(vp, &clp, p);
629 else
630 error = nfscl_getclose(vp, &clp);
631 if (error)
632 return (error);
633
634 nfscl_clientrelease(clp);
635 return (0);
636 }
637
638 /*
639 * Close the open.
640 */
641 APPLESTATIC void
642 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
643 {
644 struct nfsrv_descript nfsd, *nd = &nfsd;
645 struct nfscllockowner *lp, *nlp;
646 struct nfscllock *lop, *nlop;
647 struct ucred *tcred;
648 u_int64_t off = 0, len = 0;
649 u_int32_t type = NFSV4LOCKT_READ;
650 int error, do_unlock, trycnt;
651
652 tcred = newnfs_getcred();
653 newnfs_copycred(&op->nfso_cred, tcred);
654 /*
655 * (Theoretically this could be done in the same
656 * compound as the close, but having multiple
657 * sequenced Ops in the same compound might be
658 * too scary for some servers.)
659 */
660 if (op->nfso_posixlock) {
661 off = 0;
662 len = NFS64BITSSET;
663 type = NFSV4LOCKT_READ;
664 }
665
666 /*
667 * Since this function is only called from VOP_INACTIVE(), no
668 * other thread will be manipulating this Open. As such, the
669 * lock lists are not being changed by other threads, so it should
670 * be safe to do this without locking.
671 */
672 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
673 do_unlock = 1;
674 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
675 if (op->nfso_posixlock == 0) {
676 off = lop->nfslo_first;
677 len = lop->nfslo_end - lop->nfslo_first;
678 if (lop->nfslo_type == F_WRLCK)
679 type = NFSV4LOCKT_WRITE;
680 else
681 type = NFSV4LOCKT_READ;
682 }
683 if (do_unlock) {
684 trycnt = 0;
685 do {
686 error = nfsrpc_locku(nd, nmp, lp, off,
687 len, type, tcred, p, 0);
688 if ((nd->nd_repstat == NFSERR_GRACE ||
689 nd->nd_repstat == NFSERR_DELAY) &&
690 error == 0)
691 (void) nfs_catnap(PZERO,
692 (int)nd->nd_repstat,
693 "nfs_close");
694 } while ((nd->nd_repstat == NFSERR_GRACE ||
695 nd->nd_repstat == NFSERR_DELAY) &&
696 error == 0 && trycnt++ < 5);
697 if (op->nfso_posixlock)
698 do_unlock = 0;
699 }
700 nfscl_freelock(lop, 0);
701 }
702 /*
703 * Do a ReleaseLockOwner.
704 * The lock owner name nfsl_owner may be used by other opens for
705 * other files but the lock_owner4 name that nfsrpc_rellockown()
706 * puts on the wire has the file handle for this file appended
707 * to it, so it can be done now.
708 */
709 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
710 lp->nfsl_open->nfso_fhlen, tcred, p);
711 }
712
713 /*
714 * There could be other Opens for different files on the same
715 * OpenOwner, so locking is required.
716 */
717 NFSLOCKCLSTATE();
718 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
719 NFSUNLOCKCLSTATE();
720 do {
721 error = nfscl_tryclose(op, tcred, nmp, p);
722 if (error == NFSERR_GRACE)
723 (void) nfs_catnap(PZERO, error, "nfs_close");
724 } while (error == NFSERR_GRACE);
725 NFSLOCKCLSTATE();
726 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
727
728 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
729 nfscl_freelockowner(lp, 0);
730 nfscl_freeopen(op, 0);
731 NFSUNLOCKCLSTATE();
732 NFSFREECRED(tcred);
733 }
734
735 /*
736 * The actual Close RPC.
737 */
738 APPLESTATIC int
739 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
740 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
741 int syscred)
742 {
743 u_int32_t *tl;
744 int error;
745
746 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
747 op->nfso_fhlen, NULL, NULL);
748 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
749 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
750 if (NFSHASNFSV4N(nmp))
751 *tl++ = 0;
752 else
753 *tl++ = op->nfso_stateid.seqid;
754 *tl++ = op->nfso_stateid.other[0];
755 *tl++ = op->nfso_stateid.other[1];
756 *tl = op->nfso_stateid.other[2];
757 if (syscred)
758 nd->nd_flag |= ND_USEGSSNAME;
759 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
760 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
761 if (error)
762 return (error);
763 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
764 if (nd->nd_repstat == 0)
765 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
766 error = nd->nd_repstat;
767 if (error == NFSERR_STALESTATEID)
768 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
769 nfsmout:
770 mbuf_freem(nd->nd_mrep);
771 return (error);
772 }
773
774 /*
775 * V4 Open Confirm RPC.
776 */
777 APPLESTATIC int
778 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
779 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
780 {
781 u_int32_t *tl;
782 struct nfsrv_descript nfsd, *nd = &nfsd;
783 struct nfsmount *nmp;
784 int error;
785
786 nmp = VFSTONFS(vnode_mount(vp));
787 if (NFSHASNFSV4N(nmp))
788 return (0); /* No confirmation for NFSv4.1. */
789 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL);
790 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
791 *tl++ = op->nfso_stateid.seqid;
792 *tl++ = op->nfso_stateid.other[0];
793 *tl++ = op->nfso_stateid.other[1];
794 *tl++ = op->nfso_stateid.other[2];
795 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
796 error = nfscl_request(nd, vp, p, cred, NULL);
797 if (error)
798 return (error);
799 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
800 if (!nd->nd_repstat) {
801 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
802 op->nfso_stateid.seqid = *tl++;
803 op->nfso_stateid.other[0] = *tl++;
804 op->nfso_stateid.other[1] = *tl++;
805 op->nfso_stateid.other[2] = *tl;
806 }
807 error = nd->nd_repstat;
808 if (error == NFSERR_STALESTATEID)
809 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
810 nfsmout:
811 mbuf_freem(nd->nd_mrep);
812 return (error);
813 }
814
815 /*
816 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
817 * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
818 */
819 APPLESTATIC int
820 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
821 struct ucred *cred, NFSPROC_T *p)
822 {
823 u_int32_t *tl;
824 struct nfsrv_descript nfsd;
825 struct nfsrv_descript *nd = &nfsd;
826 nfsattrbit_t attrbits;
827 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
828 u_short port;
829 int error, isinet6 = 0, callblen;
830 nfsquad_t confirm;
831 u_int32_t lease;
832 static u_int32_t rev = 0;
833 struct nfsclds *dsp;
834 struct in6_addr a6;
835 struct nfsclsession *tsep;
836
837 if (nfsboottime.tv_sec == 0)
838 NFSSETBOOTTIME(nfsboottime);
839 clp->nfsc_rev = rev++;
840 if (NFSHASNFSV4N(nmp)) {
841 /*
842 * Either there was no previous session or the
843 * previous session has failed, so...
844 * do an ExchangeID followed by the CreateSession.
845 */
846 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq,
847 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p);
848 NFSCL_DEBUG(1, "aft exch=%d\n", error);
849 if (error == 0)
850 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
851 &nmp->nm_sockreq,
852 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
853 if (error == 0) {
854 NFSLOCKMNT(nmp);
855 /*
856 * The old sessions cannot be safely free'd
857 * here, since they may still be used by
858 * in-progress RPCs.
859 */
860 tsep = NULL;
861 if (TAILQ_FIRST(&nmp->nm_sess) != NULL)
862 tsep = NFSMNT_MDSSESSION(nmp);
863 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
864 nfsclds_list);
865 /*
866 * Wake up RPCs waiting for a slot on the
867 * old session. These will then fail with
868 * NFSERR_BADSESSION and be retried with the
869 * new session by nfsv4_setsequence().
870 * Also wakeup() processes waiting for the
871 * new session.
872 */
873 if (tsep != NULL)
874 wakeup(&tsep->nfsess_slots);
875 wakeup(&nmp->nm_sess);
876 NFSUNLOCKMNT(nmp);
877 } else
878 nfscl_freenfsclds(dsp);
879 NFSCL_DEBUG(1, "aft createsess=%d\n", error);
880 if (error == 0 && reclaim == 0) {
881 error = nfsrpc_reclaimcomplete(nmp, cred, p);
882 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error);
883 if (error == NFSERR_COMPLETEALREADY ||
884 error == NFSERR_NOTSUPP)
885 /* Ignore this error. */
886 error = 0;
887 }
888 return (error);
889 }
890
891 /*
892 * Allocate a single session structure for NFSv4.0, because some of
893 * the fields are used by NFSv4.0 although it doesn't do a session.
894 */
895 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO);
896 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
897 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF);
898 NFSLOCKMNT(nmp);
899 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list);
900 tsep = NFSMNT_MDSSESSION(nmp);
901 NFSUNLOCKMNT(nmp);
902
903 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL);
904 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
905 *tl++ = txdr_unsigned(nfsboottime.tv_sec);
906 *tl = txdr_unsigned(clp->nfsc_rev);
907 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
908
909 /*
910 * set up the callback address
911 */
912 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
913 *tl = txdr_unsigned(NFS_CALLBCKPROG);
914 callblen = strlen(nfsv4_callbackaddr);
915 if (callblen == 0)
916 cp = nfscl_getmyip(nmp, &a6, &isinet6);
917 if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
918 (callblen > 0 || cp != NULL)) {
919 port = htons(nfsv4_cbport);
920 cp2 = (u_int8_t *)&port;
921 #ifdef INET6
922 if ((callblen > 0 &&
923 strchr(nfsv4_callbackaddr, ':')) || isinet6) {
924 char ip6buf[INET6_ADDRSTRLEN], *ip6add;
925
926 (void) nfsm_strtom(nd, "tcp6", 4);
927 if (callblen == 0) {
928 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
929 ip6add = ip6buf;
930 } else {
931 ip6add = nfsv4_callbackaddr;
932 }
933 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
934 ip6add, cp2[0], cp2[1]);
935 } else
936 #endif
937 {
938 (void) nfsm_strtom(nd, "tcp", 3);
939 if (callblen == 0)
940 snprintf(addr, INET6_ADDRSTRLEN + 9,
941 "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
942 cp[2], cp[3], cp2[0], cp2[1]);
943 else
944 snprintf(addr, INET6_ADDRSTRLEN + 9,
945 "%s.%d.%d", nfsv4_callbackaddr,
946 cp2[0], cp2[1]);
947 }
948 (void) nfsm_strtom(nd, addr, strlen(addr));
949 } else {
950 (void) nfsm_strtom(nd, "tcp", 3);
951 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
952 }
953 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
954 *tl = txdr_unsigned(clp->nfsc_cbident);
955 nd->nd_flag |= ND_USEGSSNAME;
956 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
957 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
958 if (error)
959 return (error);
960 if (nd->nd_repstat == 0) {
961 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
962 tsep->nfsess_clientid.lval[0] = *tl++;
963 tsep->nfsess_clientid.lval[1] = *tl++;
964 confirm.lval[0] = *tl++;
965 confirm.lval[1] = *tl;
966 mbuf_freem(nd->nd_mrep);
967 nd->nd_mrep = NULL;
968
969 /*
970 * and confirm it.
971 */
972 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
973 NULL);
974 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
975 *tl++ = tsep->nfsess_clientid.lval[0];
976 *tl++ = tsep->nfsess_clientid.lval[1];
977 *tl++ = confirm.lval[0];
978 *tl = confirm.lval[1];
979 nd->nd_flag |= ND_USEGSSNAME;
980 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
981 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
982 if (error)
983 return (error);
984 mbuf_freem(nd->nd_mrep);
985 nd->nd_mrep = NULL;
986 if (nd->nd_repstat == 0) {
987 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
988 nmp->nm_fhsize, NULL, NULL);
989 NFSZERO_ATTRBIT(&attrbits);
990 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
991 (void) nfsrv_putattrbit(nd, &attrbits);
992 nd->nd_flag |= ND_USEGSSNAME;
993 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
994 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
995 if (error)
996 return (error);
997 if (nd->nd_repstat == 0) {
998 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
999 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
1000 if (error)
1001 goto nfsmout;
1002 clp->nfsc_renew = NFSCL_RENEW(lease);
1003 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
1004 clp->nfsc_clientidrev++;
1005 if (clp->nfsc_clientidrev == 0)
1006 clp->nfsc_clientidrev++;
1007 }
1008 }
1009 }
1010 error = nd->nd_repstat;
1011 nfsmout:
1012 mbuf_freem(nd->nd_mrep);
1013 return (error);
1014 }
1015
1016 /*
1017 * nfs getattr call.
1018 */
1019 APPLESTATIC int
1020 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
1021 struct nfsvattr *nap, void *stuff)
1022 {
1023 struct nfsrv_descript nfsd, *nd = &nfsd;
1024 int error;
1025 nfsattrbit_t attrbits;
1026
1027 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
1028 if (nd->nd_flag & ND_NFSV4) {
1029 NFSGETATTR_ATTRBIT(&attrbits);
1030 (void) nfsrv_putattrbit(nd, &attrbits);
1031 }
1032 error = nfscl_request(nd, vp, p, cred, stuff);
1033 if (error)
1034 return (error);
1035 if (!nd->nd_repstat)
1036 error = nfsm_loadattr(nd, nap);
1037 else
1038 error = nd->nd_repstat;
1039 mbuf_freem(nd->nd_mrep);
1040 return (error);
1041 }
1042
1043 /*
1044 * nfs getattr call with non-vnode arguemnts.
1045 */
1046 APPLESTATIC int
1047 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
1048 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp,
1049 uint32_t *leasep)
1050 {
1051 struct nfsrv_descript nfsd, *nd = &nfsd;
1052 int error, vers = NFS_VER2;
1053 nfsattrbit_t attrbits;
1054
1055 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL);
1056 if (nd->nd_flag & ND_NFSV4) {
1057 vers = NFS_VER4;
1058 NFSGETATTR_ATTRBIT(&attrbits);
1059 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1060 (void) nfsrv_putattrbit(nd, &attrbits);
1061 } else if (nd->nd_flag & ND_NFSV3) {
1062 vers = NFS_VER3;
1063 }
1064 if (syscred)
1065 nd->nd_flag |= ND_USEGSSNAME;
1066 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1067 NFS_PROG, vers, NULL, 1, xidp, NULL);
1068 if (error)
1069 return (error);
1070 if (nd->nd_repstat == 0) {
1071 if ((nd->nd_flag & ND_NFSV4) != 0)
1072 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
1073 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL,
1074 NULL, NULL);
1075 else
1076 error = nfsm_loadattr(nd, nap);
1077 } else
1078 error = nd->nd_repstat;
1079 mbuf_freem(nd->nd_mrep);
1080 return (error);
1081 }
1082
1083 /*
1084 * Do an nfs setattr operation.
1085 */
1086 APPLESTATIC int
1087 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
1088 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
1089 void *stuff)
1090 {
1091 int error, expireret = 0, openerr, retrycnt;
1092 u_int32_t clidrev = 0, mode;
1093 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1094 struct nfsfh *nfhp;
1095 nfsv4stateid_t stateid;
1096 void *lckp;
1097
1098 if (nmp->nm_clp != NULL)
1099 clidrev = nmp->nm_clp->nfsc_clientidrev;
1100 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
1101 mode = NFSV4OPEN_ACCESSWRITE;
1102 else
1103 mode = NFSV4OPEN_ACCESSREAD;
1104 retrycnt = 0;
1105 do {
1106 lckp = NULL;
1107 openerr = 1;
1108 if (NFSHASNFSV4(nmp)) {
1109 nfhp = VTONFS(vp)->n_fhp;
1110 error = nfscl_getstateid(vp, nfhp->nfh_fh,
1111 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp);
1112 if (error && vnode_vtype(vp) == VREG &&
1113 (mode == NFSV4OPEN_ACCESSWRITE ||
1114 nfstest_openallsetattr)) {
1115 /*
1116 * No Open stateid, so try and open the file
1117 * now.
1118 */
1119 if (mode == NFSV4OPEN_ACCESSWRITE)
1120 openerr = nfsrpc_open(vp, FWRITE, cred,
1121 p);
1122 else
1123 openerr = nfsrpc_open(vp, FREAD, cred,
1124 p);
1125 if (!openerr)
1126 (void) nfscl_getstateid(vp,
1127 nfhp->nfh_fh, nfhp->nfh_len,
1128 mode, 0, cred, p, &stateid, &lckp);
1129 }
1130 }
1131 if (vap != NULL)
1132 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
1133 rnap, attrflagp, stuff);
1134 else
1135 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
1136 stuff);
1137 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) {
1138 NFSLOCKMNT(nmp);
1139 nmp->nm_state |= NFSSTA_OPENMODE;
1140 NFSUNLOCKMNT(nmp);
1141 }
1142 if (error == NFSERR_STALESTATEID)
1143 nfscl_initiate_recovery(nmp->nm_clp);
1144 if (lckp != NULL)
1145 nfscl_lockderef(lckp);
1146 if (!openerr)
1147 (void) nfsrpc_close(vp, 0, p);
1148 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1149 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1150 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1151 (void) nfs_catnap(PZERO, error, "nfs_setattr");
1152 } else if ((error == NFSERR_EXPIRED ||
1153 error == NFSERR_BADSTATEID) && clidrev != 0) {
1154 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1155 }
1156 retrycnt++;
1157 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1158 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1159 error == NFSERR_BADSESSION ||
1160 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1161 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1162 expireret == 0 && clidrev != 0 && retrycnt < 4) ||
1163 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD &&
1164 retrycnt < 4));
1165 if (error && retrycnt >= 4)
1166 error = EIO;
1167 return (error);
1168 }
1169
1170 static int
1171 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1172 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1173 struct nfsvattr *rnap, int *attrflagp, void *stuff)
1174 {
1175 u_int32_t *tl;
1176 struct nfsrv_descript nfsd, *nd = &nfsd;
1177 int error;
1178 nfsattrbit_t attrbits;
1179
1180 *attrflagp = 0;
1181 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1182 if (nd->nd_flag & ND_NFSV4)
1183 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1184 vap->va_type = vnode_vtype(vp);
1185 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1186 if (nd->nd_flag & ND_NFSV3) {
1187 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1188 *tl = newnfs_false;
1189 } else if (nd->nd_flag & ND_NFSV4) {
1190 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1191 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1192 NFSGETATTR_ATTRBIT(&attrbits);
1193 (void) nfsrv_putattrbit(nd, &attrbits);
1194 }
1195 error = nfscl_request(nd, vp, p, cred, stuff);
1196 if (error)
1197 return (error);
1198 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1199 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1200 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error)
1201 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1202 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1203 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1204 mbuf_freem(nd->nd_mrep);
1205 if (nd->nd_repstat && !error)
1206 error = nd->nd_repstat;
1207 return (error);
1208 }
1209
1210 /*
1211 * nfs lookup rpc
1212 */
1213 APPLESTATIC int
1214 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1215 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1216 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1217 {
1218 u_int32_t *tl;
1219 struct nfsrv_descript nfsd, *nd = &nfsd;
1220 struct nfsmount *nmp;
1221 struct nfsnode *np;
1222 struct nfsfh *nfhp;
1223 nfsattrbit_t attrbits;
1224 int error = 0, lookupp = 0;
1225
1226 *attrflagp = 0;
1227 *dattrflagp = 0;
1228 if (vnode_vtype(dvp) != VDIR)
1229 return (ENOTDIR);
1230 nmp = VFSTONFS(vnode_mount(dvp));
1231 if (len > NFS_MAXNAMLEN)
1232 return (ENAMETOOLONG);
1233 if (NFSHASNFSV4(nmp) && len == 1 &&
1234 name[0] == '.') {
1235 /*
1236 * Just return the current dir's fh.
1237 */
1238 np = VTONFS(dvp);
1239 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1240 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1241 nfhp->nfh_len = np->n_fhp->nfh_len;
1242 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1243 *nfhpp = nfhp;
1244 return (0);
1245 }
1246 if (NFSHASNFSV4(nmp) && len == 2 &&
1247 name[0] == '.' && name[1] == '.') {
1248 lookupp = 1;
1249 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1250 } else {
1251 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1252 (void) nfsm_strtom(nd, name, len);
1253 }
1254 if (nd->nd_flag & ND_NFSV4) {
1255 NFSGETATTR_ATTRBIT(&attrbits);
1256 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1257 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1258 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1259 (void) nfsrv_putattrbit(nd, &attrbits);
1260 }
1261 error = nfscl_request(nd, dvp, p, cred, stuff);
1262 if (error)
1263 return (error);
1264 if (nd->nd_repstat) {
1265 /*
1266 * When an NFSv4 Lookupp returns ENOENT, it means that
1267 * the lookup is at the root of an fs, so return this dir.
1268 */
1269 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1270 np = VTONFS(dvp);
1271 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1272 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1273 nfhp->nfh_len = np->n_fhp->nfh_len;
1274 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1275 *nfhpp = nfhp;
1276 mbuf_freem(nd->nd_mrep);
1277 return (0);
1278 }
1279 if (nd->nd_flag & ND_NFSV3)
1280 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1281 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
1282 ND_NFSV4) {
1283 /* Load the directory attributes. */
1284 error = nfsm_loadattr(nd, dnap);
1285 if (error == 0)
1286 *dattrflagp = 1;
1287 }
1288 goto nfsmout;
1289 }
1290 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1291 /* Load the directory attributes. */
1292 error = nfsm_loadattr(nd, dnap);
1293 if (error != 0)
1294 goto nfsmout;
1295 *dattrflagp = 1;
1296 /* Skip over the Lookup and GetFH operation status values. */
1297 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1298 }
1299 error = nfsm_getfh(nd, nfhpp);
1300 if (error)
1301 goto nfsmout;
1302
1303 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1304 if ((nd->nd_flag & ND_NFSV3) && !error)
1305 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1306 nfsmout:
1307 mbuf_freem(nd->nd_mrep);
1308 if (!error && nd->nd_repstat)
1309 error = nd->nd_repstat;
1310 return (error);
1311 }
1312
1313 /*
1314 * Do a readlink rpc.
1315 */
1316 APPLESTATIC int
1317 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1318 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1319 {
1320 u_int32_t *tl;
1321 struct nfsrv_descript nfsd, *nd = &nfsd;
1322 struct nfsnode *np = VTONFS(vp);
1323 nfsattrbit_t attrbits;
1324 int error, len, cangetattr = 1;
1325
1326 *attrflagp = 0;
1327 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1328 if (nd->nd_flag & ND_NFSV4) {
1329 /*
1330 * And do a Getattr op.
1331 */
1332 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1333 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1334 NFSGETATTR_ATTRBIT(&attrbits);
1335 (void) nfsrv_putattrbit(nd, &attrbits);
1336 }
1337 error = nfscl_request(nd, vp, p, cred, stuff);
1338 if (error)
1339 return (error);
1340 if (nd->nd_flag & ND_NFSV3)
1341 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1342 if (!nd->nd_repstat && !error) {
1343 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1344 /*
1345 * This seems weird to me, but must have been added to
1346 * FreeBSD for some reason. The only thing I can think of
1347 * is that there was/is some server that replies with
1348 * more link data than it should?
1349 */
1350 if (len == NFS_MAXPATHLEN) {
1351 NFSLOCKNODE(np);
1352 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1353 len = np->n_size;
1354 cangetattr = 0;
1355 }
1356 NFSUNLOCKNODE(np);
1357 }
1358 error = nfsm_mbufuio(nd, uiop, len);
1359 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1360 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1361 }
1362 if (nd->nd_repstat && !error)
1363 error = nd->nd_repstat;
1364 nfsmout:
1365 mbuf_freem(nd->nd_mrep);
1366 return (error);
1367 }
1368
1369 /*
1370 * Read operation.
1371 */
1372 APPLESTATIC int
1373 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1374 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1375 {
1376 int error, expireret = 0, retrycnt;
1377 u_int32_t clidrev = 0;
1378 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1379 struct nfsnode *np = VTONFS(vp);
1380 struct ucred *newcred;
1381 struct nfsfh *nfhp = NULL;
1382 nfsv4stateid_t stateid;
1383 void *lckp;
1384
1385 if (nmp->nm_clp != NULL)
1386 clidrev = nmp->nm_clp->nfsc_clientidrev;
1387 newcred = cred;
1388 if (NFSHASNFSV4(nmp)) {
1389 nfhp = np->n_fhp;
1390 newcred = NFSNEWCRED(cred);
1391 }
1392 retrycnt = 0;
1393 do {
1394 lckp = NULL;
1395 if (NFSHASNFSV4(nmp))
1396 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1397 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid,
1398 &lckp);
1399 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1400 attrflagp, stuff);
1401 if (error == NFSERR_OPENMODE) {
1402 NFSLOCKMNT(nmp);
1403 nmp->nm_state |= NFSSTA_OPENMODE;
1404 NFSUNLOCKMNT(nmp);
1405 }
1406 if (error == NFSERR_STALESTATEID)
1407 nfscl_initiate_recovery(nmp->nm_clp);
1408 if (lckp != NULL)
1409 nfscl_lockderef(lckp);
1410 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1411 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1412 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1413 (void) nfs_catnap(PZERO, error, "nfs_read");
1414 } else if ((error == NFSERR_EXPIRED ||
1415 error == NFSERR_BADSTATEID) && clidrev != 0) {
1416 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1417 }
1418 retrycnt++;
1419 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1420 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1421 error == NFSERR_BADSESSION ||
1422 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1423 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1424 expireret == 0 && clidrev != 0 && retrycnt < 4) ||
1425 (error == NFSERR_OPENMODE && retrycnt < 4));
1426 if (error && retrycnt >= 4)
1427 error = EIO;
1428 if (NFSHASNFSV4(nmp))
1429 NFSFREECRED(newcred);
1430 return (error);
1431 }
1432
1433 /*
1434 * The actual read RPC.
1435 */
1436 static int
1437 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1438 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1439 int *attrflagp, void *stuff)
1440 {
1441 u_int32_t *tl;
1442 int error = 0, len, retlen, tsiz, eof = 0;
1443 struct nfsrv_descript nfsd;
1444 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1445 struct nfsrv_descript *nd = &nfsd;
1446 int rsize;
1447 off_t tmp_off;
1448
1449 *attrflagp = 0;
1450 tsiz = uio_uio_resid(uiop);
1451 tmp_off = uiop->uio_offset + tsiz;
1452 NFSLOCKMNT(nmp);
1453 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1454 NFSUNLOCKMNT(nmp);
1455 return (EFBIG);
1456 }
1457 rsize = nmp->nm_rsize;
1458 NFSUNLOCKMNT(nmp);
1459 nd->nd_mrep = NULL;
1460 while (tsiz > 0) {
1461 *attrflagp = 0;
1462 len = (tsiz > rsize) ? rsize : tsiz;
1463 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1464 if (nd->nd_flag & ND_NFSV4)
1465 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1466 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1467 if (nd->nd_flag & ND_NFSV2) {
1468 *tl++ = txdr_unsigned(uiop->uio_offset);
1469 *tl++ = txdr_unsigned(len);
1470 *tl = 0;
1471 } else {
1472 txdr_hyper(uiop->uio_offset, tl);
1473 *(tl + 2) = txdr_unsigned(len);
1474 }
1475 /*
1476 * Since I can't do a Getattr for NFSv4 for Write, there
1477 * doesn't seem any point in doing one here, either.
1478 * (See the comment in nfsrpc_writerpc() for more info.)
1479 */
1480 error = nfscl_request(nd, vp, p, cred, stuff);
1481 if (error)
1482 return (error);
1483 if (nd->nd_flag & ND_NFSV3) {
1484 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1485 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1486 error = nfsm_loadattr(nd, nap);
1487 if (!error)
1488 *attrflagp = 1;
1489 }
1490 if (nd->nd_repstat || error) {
1491 if (!error)
1492 error = nd->nd_repstat;
1493 goto nfsmout;
1494 }
1495 if (nd->nd_flag & ND_NFSV3) {
1496 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1497 eof = fxdr_unsigned(int, *(tl + 1));
1498 } else if (nd->nd_flag & ND_NFSV4) {
1499 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1500 eof = fxdr_unsigned(int, *tl);
1501 }
1502 NFSM_STRSIZ(retlen, len);
1503 error = nfsm_mbufuio(nd, uiop, retlen);
1504 if (error)
1505 goto nfsmout;
1506 mbuf_freem(nd->nd_mrep);
1507 nd->nd_mrep = NULL;
1508 tsiz -= retlen;
1509 if (!(nd->nd_flag & ND_NFSV2)) {
1510 if (eof || retlen == 0)
1511 tsiz = 0;
1512 } else if (retlen < len)
1513 tsiz = 0;
1514 }
1515 return (0);
1516 nfsmout:
1517 if (nd->nd_mrep != NULL)
1518 mbuf_freem(nd->nd_mrep);
1519 return (error);
1520 }
1521
1522 /*
1523 * nfs write operation
1524 * When called_from_strategy != 0, it should return EIO for an error that
1525 * indicates recovery is in progress, so that the buffer will be left
1526 * dirty and be written back to the server later. If it loops around,
1527 * the recovery thread could get stuck waiting for the buffer and recovery
1528 * will then deadlock.
1529 */
1530 APPLESTATIC int
1531 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
1532 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1533 void *stuff, int called_from_strategy)
1534 {
1535 int error, expireret = 0, retrycnt, nostateid;
1536 u_int32_t clidrev = 0;
1537 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1538 struct nfsnode *np = VTONFS(vp);
1539 struct ucred *newcred;
1540 struct nfsfh *nfhp = NULL;
1541 nfsv4stateid_t stateid;
1542 void *lckp;
1543
1544 *must_commit = 0;
1545 if (nmp->nm_clp != NULL)
1546 clidrev = nmp->nm_clp->nfsc_clientidrev;
1547 newcred = cred;
1548 if (NFSHASNFSV4(nmp)) {
1549 newcred = NFSNEWCRED(cred);
1550 nfhp = np->n_fhp;
1551 }
1552 retrycnt = 0;
1553 do {
1554 lckp = NULL;
1555 nostateid = 0;
1556 if (NFSHASNFSV4(nmp)) {
1557 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1558 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid,
1559 &lckp);
1560 if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1561 stateid.other[2] == 0) {
1562 nostateid = 1;
1563 NFSCL_DEBUG(1, "stateid0 in write\n");
1564 }
1565 }
1566
1567 /*
1568 * If there is no stateid for NFSv4, it means this is an
1569 * extraneous write after close. Basically a poorly
1570 * implemented buffer cache. Just don't do the write.
1571 */
1572 if (nostateid)
1573 error = 0;
1574 else
1575 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
1576 newcred, &stateid, p, nap, attrflagp, stuff);
1577 if (error == NFSERR_STALESTATEID)
1578 nfscl_initiate_recovery(nmp->nm_clp);
1579 if (lckp != NULL)
1580 nfscl_lockderef(lckp);
1581 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1582 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1583 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1584 (void) nfs_catnap(PZERO, error, "nfs_write");
1585 } else if ((error == NFSERR_EXPIRED ||
1586 error == NFSERR_BADSTATEID) && clidrev != 0) {
1587 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1588 }
1589 retrycnt++;
1590 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1591 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1592 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1593 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1594 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1595 expireret == 0 && clidrev != 0 && retrycnt < 4));
1596 if (error != 0 && (retrycnt >= 4 ||
1597 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1598 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1599 error = EIO;
1600 if (NFSHASNFSV4(nmp))
1601 NFSFREECRED(newcred);
1602 return (error);
1603 }
1604
1605 /*
1606 * The actual write RPC.
1607 */
1608 static int
1609 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1610 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
1611 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1612 {
1613 u_int32_t *tl;
1614 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1615 struct nfsnode *np = VTONFS(vp);
1616 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1617 int wccflag = 0, wsize;
1618 int32_t backup;
1619 struct nfsrv_descript nfsd;
1620 struct nfsrv_descript *nd = &nfsd;
1621 nfsattrbit_t attrbits;
1622 off_t tmp_off;
1623
1624 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1625 *attrflagp = 0;
1626 tsiz = uio_uio_resid(uiop);
1627 tmp_off = uiop->uio_offset + tsiz;
1628 NFSLOCKMNT(nmp);
1629 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1630 NFSUNLOCKMNT(nmp);
1631 return (EFBIG);
1632 }
1633 wsize = nmp->nm_wsize;
1634 NFSUNLOCKMNT(nmp);
1635 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */
1636 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */
1637 while (tsiz > 0) {
1638 *attrflagp = 0;
1639 len = (tsiz > wsize) ? wsize : tsiz;
1640 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1641 if (nd->nd_flag & ND_NFSV4) {
1642 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1643 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1644 txdr_hyper(uiop->uio_offset, tl);
1645 tl += 2;
1646 *tl++ = txdr_unsigned(*iomode);
1647 *tl = txdr_unsigned(len);
1648 } else if (nd->nd_flag & ND_NFSV3) {
1649 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1650 txdr_hyper(uiop->uio_offset, tl);
1651 tl += 2;
1652 *tl++ = txdr_unsigned(len);
1653 *tl++ = txdr_unsigned(*iomode);
1654 *tl = txdr_unsigned(len);
1655 } else {
1656 u_int32_t x;
1657
1658 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1659 /*
1660 * Not sure why someone changed this, since the
1661 * RFC clearly states that "beginoffset" and
1662 * "totalcount" are ignored, but it wouldn't
1663 * surprise me if there's a busted server out there.
1664 */
1665 /* Set both "begin" and "current" to non-garbage. */
1666 x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1667 *tl++ = x; /* "begin offset" */
1668 *tl++ = x; /* "current offset" */
1669 x = txdr_unsigned(len);
1670 *tl++ = x; /* total to this offset */
1671 *tl = x; /* size of this write */
1672
1673 }
1674 nfsm_uiombuf(nd, uiop, len);
1675 /*
1676 * Although it is tempting to do a normal Getattr Op in the
1677 * NFSv4 compound, the result can be a nearly hung client
1678 * system if the Getattr asks for Owner and/or OwnerGroup.
1679 * It occurs when the client can't map either the Owner or
1680 * Owner_group name in the Getattr reply to a uid/gid. When
1681 * there is a cache miss, the kernel does an upcall to the
1682 * nfsuserd. Then, it can try and read the local /etc/passwd
1683 * or /etc/group file. It can then block in getnewbuf(),
1684 * waiting for dirty writes to be pushed to the NFS server.
1685 * The only reason this doesn't result in a complete
1686 * deadlock, is that the upcall times out and allows
1687 * the write to complete. However, progress is so slow
1688 * that it might just as well be deadlocked.
1689 * As such, we get the rest of the attributes, but not
1690 * Owner or Owner_group.
1691 * nb: nfscl_loadattrcache() needs to be told that these
1692 * partial attributes from a write rpc are being
1693 * passed in, via a argument flag.
1694 */
1695 if (nd->nd_flag & ND_NFSV4) {
1696 NFSWRITEGETATTR_ATTRBIT(&attrbits);
1697 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1698 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1699 (void) nfsrv_putattrbit(nd, &attrbits);
1700 }
1701 error = nfscl_request(nd, vp, p, cred, stuff);
1702 if (error)
1703 return (error);
1704 if (nd->nd_repstat) {
1705 /*
1706 * In case the rpc gets retried, roll
1707 * the uio fileds changed by nfsm_uiombuf()
1708 * back.
1709 */
1710 uiop->uio_offset -= len;
1711 uio_uio_resid_add(uiop, len);
1712 uio_iov_base_add(uiop, -len);
1713 uio_iov_len_add(uiop, len);
1714 }
1715 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1716 error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1717 &wccflag, stuff);
1718 if (error)
1719 goto nfsmout;
1720 }
1721 if (!nd->nd_repstat) {
1722 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1723 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1724 + NFSX_VERF);
1725 rlen = fxdr_unsigned(int, *tl++);
1726 if (rlen == 0) {
1727 error = NFSERR_IO;
1728 goto nfsmout;
1729 } else if (rlen < len) {
1730 backup = len - rlen;
1731 uio_iov_base_add(uiop, -(backup));
1732 uio_iov_len_add(uiop, backup);
1733 uiop->uio_offset -= backup;
1734 uio_uio_resid_add(uiop, backup);
1735 len = rlen;
1736 }
1737 commit = fxdr_unsigned(int, *tl++);
1738
1739 /*
1740 * Return the lowest commitment level
1741 * obtained by any of the RPCs.
1742 */
1743 if (committed == NFSWRITE_FILESYNC)
1744 committed = commit;
1745 else if (committed == NFSWRITE_DATASYNC &&
1746 commit == NFSWRITE_UNSTABLE)
1747 committed = commit;
1748 NFSLOCKMNT(nmp);
1749 if (!NFSHASWRITEVERF(nmp)) {
1750 NFSBCOPY((caddr_t)tl,
1751 (caddr_t)&nmp->nm_verf[0],
1752 NFSX_VERF);
1753 NFSSETWRITEVERF(nmp);
1754 } else if (NFSBCMP(tl, nmp->nm_verf,
1755 NFSX_VERF)) {
1756 *must_commit = 1;
1757 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
1758 }
1759 NFSUNLOCKMNT(nmp);
1760 }
1761 if (nd->nd_flag & ND_NFSV4)
1762 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1763 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1764 error = nfsm_loadattr(nd, nap);
1765 if (!error)
1766 *attrflagp = NFS_LATTR_NOSHRINK;
1767 }
1768 } else {
1769 error = nd->nd_repstat;
1770 }
1771 if (error)
1772 goto nfsmout;
1773 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4));
1774 mbuf_freem(nd->nd_mrep);
1775 nd->nd_mrep = NULL;
1776 tsiz -= len;
1777 }
1778 nfsmout:
1779 if (nd->nd_mrep != NULL)
1780 mbuf_freem(nd->nd_mrep);
1781 *iomode = committed;
1782 if (nd->nd_repstat && !error)
1783 error = nd->nd_repstat;
1784 return (error);
1785 }
1786
1787 /*
1788 * nfs mknod rpc
1789 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1790 * mode set to specify the file type and the size field for rdev.
1791 */
1792 APPLESTATIC int
1793 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1794 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1795 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1796 int *attrflagp, int *dattrflagp, void *dstuff)
1797 {
1798 u_int32_t *tl;
1799 int error = 0;
1800 struct nfsrv_descript nfsd, *nd = &nfsd;
1801 nfsattrbit_t attrbits;
1802
1803 *nfhpp = NULL;
1804 *attrflagp = 0;
1805 *dattrflagp = 0;
1806 if (namelen > NFS_MAXNAMLEN)
1807 return (ENAMETOOLONG);
1808 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1809 if (nd->nd_flag & ND_NFSV4) {
1810 if (vtyp == VBLK || vtyp == VCHR) {
1811 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1812 *tl++ = vtonfsv34_type(vtyp);
1813 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1814 *tl = txdr_unsigned(NFSMINOR(rdev));
1815 } else {
1816 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1817 *tl = vtonfsv34_type(vtyp);
1818 }
1819 }
1820 (void) nfsm_strtom(nd, name, namelen);
1821 if (nd->nd_flag & ND_NFSV3) {
1822 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1823 *tl = vtonfsv34_type(vtyp);
1824 }
1825 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1826 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1827 if ((nd->nd_flag & ND_NFSV3) &&
1828 (vtyp == VCHR || vtyp == VBLK)) {
1829 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1830 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1831 *tl = txdr_unsigned(NFSMINOR(rdev));
1832 }
1833 if (nd->nd_flag & ND_NFSV4) {
1834 NFSGETATTR_ATTRBIT(&attrbits);
1835 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1836 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1837 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1838 (void) nfsrv_putattrbit(nd, &attrbits);
1839 }
1840 if (nd->nd_flag & ND_NFSV2)
1841 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
1842 error = nfscl_request(nd, dvp, p, cred, dstuff);
1843 if (error)
1844 return (error);
1845 if (nd->nd_flag & ND_NFSV4)
1846 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1847 if (!nd->nd_repstat) {
1848 if (nd->nd_flag & ND_NFSV4) {
1849 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1850 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1851 if (error)
1852 goto nfsmout;
1853 }
1854 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1855 if (error)
1856 goto nfsmout;
1857 }
1858 if (nd->nd_flag & ND_NFSV3)
1859 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1860 if (!error && nd->nd_repstat)
1861 error = nd->nd_repstat;
1862 nfsmout:
1863 mbuf_freem(nd->nd_mrep);
1864 return (error);
1865 }
1866
1867 /*
1868 * nfs file create call
1869 * Mostly just call the approriate routine. (I separated out v4, so that
1870 * error recovery wouldn't be as difficult.)
1871 */
1872 APPLESTATIC int
1873 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1874 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1875 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1876 int *attrflagp, int *dattrflagp, void *dstuff)
1877 {
1878 int error = 0, newone, expireret = 0, retrycnt, unlocked;
1879 struct nfsclowner *owp;
1880 struct nfscldeleg *dp;
1881 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
1882 u_int32_t clidrev;
1883
1884 if (NFSHASNFSV4(nmp)) {
1885 retrycnt = 0;
1886 do {
1887 dp = NULL;
1888 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
1889 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
1890 NULL, 1);
1891 if (error)
1892 return (error);
1893 if (nmp->nm_clp != NULL)
1894 clidrev = nmp->nm_clp->nfsc_clientidrev;
1895 else
1896 clidrev = 0;
1897 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
1898 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1899 dstuff, &unlocked);
1900 /*
1901 * There is no need to invalidate cached attributes here,
1902 * since new post-delegation issue attributes are always
1903 * returned by nfsrpc_createv4() and these will update the
1904 * attribute cache.
1905 */
1906 if (dp != NULL)
1907 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
1908 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
1909 nfscl_ownerrelease(nmp, owp, error, newone, unlocked);
1910 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1911 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1912 error == NFSERR_BADSESSION) {
1913 (void) nfs_catnap(PZERO, error, "nfs_open");
1914 } else if ((error == NFSERR_EXPIRED ||
1915 error == NFSERR_BADSTATEID) && clidrev != 0) {
1916 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1917 retrycnt++;
1918 }
1919 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1920 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1921 error == NFSERR_BADSESSION ||
1922 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1923 expireret == 0 && clidrev != 0 && retrycnt < 4));
1924 if (error && retrycnt >= 4)
1925 error = EIO;
1926 } else {
1927 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
1928 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1929 dstuff);
1930 }
1931 return (error);
1932 }
1933
1934 /*
1935 * The create rpc for v2 and 3.
1936 */
1937 static int
1938 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1939 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1940 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1941 int *attrflagp, int *dattrflagp, void *dstuff)
1942 {
1943 u_int32_t *tl;
1944 int error = 0;
1945 struct nfsrv_descript nfsd, *nd = &nfsd;
1946
1947 *nfhpp = NULL;
1948 *attrflagp = 0;
1949 *dattrflagp = 0;
1950 if (namelen > NFS_MAXNAMLEN)
1951 return (ENAMETOOLONG);
1952 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1953 (void) nfsm_strtom(nd, name, namelen);
1954 if (nd->nd_flag & ND_NFSV3) {
1955 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1956 if (fmode & O_EXCL) {
1957 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1958 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1959 *tl++ = cverf.lval[0];
1960 *tl = cverf.lval[1];
1961 } else {
1962 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1963 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1964 }
1965 } else {
1966 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
1967 }
1968 error = nfscl_request(nd, dvp, p, cred, dstuff);
1969 if (error)
1970 return (error);
1971 if (nd->nd_repstat == 0) {
1972 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1973 if (error)
1974 goto nfsmout;
1975 }
1976 if (nd->nd_flag & ND_NFSV3)
1977 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1978 if (nd->nd_repstat != 0 && error == 0)
1979 error = nd->nd_repstat;
1980 nfsmout:
1981 mbuf_freem(nd->nd_mrep);
1982 return (error);
1983 }
1984
1985 static int
1986 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1987 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
1988 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
1989 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
1990 int *dattrflagp, void *dstuff, int *unlockedp)
1991 {
1992 u_int32_t *tl;
1993 int error = 0, deleg, newone, ret, acesize, limitby;
1994 struct nfsrv_descript nfsd, *nd = &nfsd;
1995 struct nfsclopen *op;
1996 struct nfscldeleg *dp = NULL;
1997 struct nfsnode *np;
1998 struct nfsfh *nfhp;
1999 nfsattrbit_t attrbits;
2000 nfsv4stateid_t stateid;
2001 u_int32_t rflags;
2002 struct nfsmount *nmp;
2003 struct nfsclsession *tsep;
2004
2005 nmp = VFSTONFS(dvp->v_mount);
2006 np = VTONFS(dvp);
2007 *unlockedp = 0;
2008 *nfhpp = NULL;
2009 *dpp = NULL;
2010 *attrflagp = 0;
2011 *dattrflagp = 0;
2012 if (namelen > NFS_MAXNAMLEN)
2013 return (ENAMETOOLONG);
2014 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
2015 /*
2016 * For V4, this is actually an Open op.
2017 */
2018 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2019 *tl++ = txdr_unsigned(owp->nfsow_seqid);
2020 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
2021 NFSV4OPEN_ACCESSREAD);
2022 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
2023 tsep = nfsmnt_mdssession(nmp);
2024 *tl++ = tsep->nfsess_clientid.lval[0];
2025 *tl = tsep->nfsess_clientid.lval[1];
2026 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
2027 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2028 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
2029 if (fmode & O_EXCL) {
2030 if (NFSHASNFSV4N(nmp)) {
2031 if (NFSHASSESSPERSIST(nmp)) {
2032 /* Use GUARDED for persistent sessions. */
2033 *tl = txdr_unsigned(NFSCREATE_GUARDED);
2034 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2035 } else {
2036 /* Otherwise, use EXCLUSIVE4_1. */
2037 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
2038 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2039 *tl++ = cverf.lval[0];
2040 *tl = cverf.lval[1];
2041 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2042 }
2043 } else {
2044 /* NFSv4.0 */
2045 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
2046 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2047 *tl++ = cverf.lval[0];
2048 *tl = cverf.lval[1];
2049 }
2050 } else {
2051 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2052 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2053 }
2054 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2055 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
2056 (void) nfsm_strtom(nd, name, namelen);
2057 /* Get the new file's handle and attributes. */
2058 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2059 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2060 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2061 NFSGETATTR_ATTRBIT(&attrbits);
2062 (void) nfsrv_putattrbit(nd, &attrbits);
2063 /* Get the directory's post-op attributes. */
2064 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2065 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2066 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
2067 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2068 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2069 (void) nfsrv_putattrbit(nd, &attrbits);
2070 error = nfscl_request(nd, dvp, p, cred, dstuff);
2071 if (error)
2072 return (error);
2073 NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
2074 if (nd->nd_repstat == 0) {
2075 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2076 6 * NFSX_UNSIGNED);
2077 stateid.seqid = *tl++;
2078 stateid.other[0] = *tl++;
2079 stateid.other[1] = *tl++;
2080 stateid.other[2] = *tl;
2081 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
2082 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2083 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2084 deleg = fxdr_unsigned(int, *tl);
2085 if (deleg == NFSV4OPEN_DELEGATEREAD ||
2086 deleg == NFSV4OPEN_DELEGATEWRITE) {
2087 if (!(owp->nfsow_clp->nfsc_flags &
2088 NFSCLFLAGS_FIRSTDELEG))
2089 owp->nfsow_clp->nfsc_flags |=
2090 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
2091 MALLOC(dp, struct nfscldeleg *,
2092 sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
2093 M_NFSCLDELEG, M_WAITOK);
2094 LIST_INIT(&dp->nfsdl_owner);
2095 LIST_INIT(&dp->nfsdl_lock);
2096 dp->nfsdl_clp = owp->nfsow_clp;
2097 newnfs_copyincred(cred, &dp->nfsdl_cred);
2098 nfscl_lockinit(&dp->nfsdl_rwlock);
2099 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2100 NFSX_UNSIGNED);
2101 dp->nfsdl_stateid.seqid = *tl++;
2102 dp->nfsdl_stateid.other[0] = *tl++;
2103 dp->nfsdl_stateid.other[1] = *tl++;
2104 dp->nfsdl_stateid.other[2] = *tl++;
2105 ret = fxdr_unsigned(int, *tl);
2106 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
2107 dp->nfsdl_flags = NFSCLDL_WRITE;
2108 /*
2109 * Indicates how much the file can grow.
2110 */
2111 NFSM_DISSECT(tl, u_int32_t *,
2112 3 * NFSX_UNSIGNED);
2113 limitby = fxdr_unsigned(int, *tl++);
2114 switch (limitby) {
2115 case NFSV4OPEN_LIMITSIZE:
2116 dp->nfsdl_sizelimit = fxdr_hyper(tl);
2117 break;
2118 case NFSV4OPEN_LIMITBLOCKS:
2119 dp->nfsdl_sizelimit =
2120 fxdr_unsigned(u_int64_t, *tl++);
2121 dp->nfsdl_sizelimit *=
2122 fxdr_unsigned(u_int64_t, *tl);
2123 break;
2124 default:
2125 error = NFSERR_BADXDR;
2126 goto nfsmout;
2127 }
2128 } else {
2129 dp->nfsdl_flags = NFSCLDL_READ;
2130 }
2131 if (ret)
2132 dp->nfsdl_flags |= NFSCLDL_RECALL;
2133 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
2134 &acesize, p);
2135 if (error)
2136 goto nfsmout;
2137 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
2138 error = NFSERR_BADXDR;
2139 goto nfsmout;
2140 }
2141 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2142 if (error)
2143 goto nfsmout;
2144 /* Get rid of the PutFH and Getattr status values. */
2145 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2146 /* Load the directory attributes. */
2147 error = nfsm_loadattr(nd, dnap);
2148 if (error)
2149 goto nfsmout;
2150 *dattrflagp = 1;
2151 if (dp != NULL && *attrflagp) {
2152 dp->nfsdl_change = nnap->na_filerev;
2153 dp->nfsdl_modtime = nnap->na_mtime;
2154 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
2155 }
2156 /*
2157 * We can now complete the Open state.
2158 */
2159 nfhp = *nfhpp;
2160 if (dp != NULL) {
2161 dp->nfsdl_fhlen = nfhp->nfh_len;
2162 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
2163 }
2164 /*
2165 * Get an Open structure that will be
2166 * attached to the OpenOwner, acquired already.
2167 */
2168 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
2169 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
2170 cred, p, NULL, &op, &newone, NULL, 0);
2171 if (error)
2172 goto nfsmout;
2173 op->nfso_stateid = stateid;
2174 newnfs_copyincred(cred, &op->nfso_cred);
2175 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
2176 do {
2177 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
2178 nfhp->nfh_len, op, cred, p);
2179 if (ret == NFSERR_DELAY)
2180 (void) nfs_catnap(PZERO, ret, "nfs_create");
2181 } while (ret == NFSERR_DELAY);
2182 error = ret;
2183 }
2184
2185 /*
2186 * If the server is handing out delegations, but we didn't
2187 * get one because an OpenConfirm was required, try the
2188 * Open again, to get a delegation. This is a harmless no-op,
2189 * from a server's point of view.
2190 */
2191 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
2192 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
2193 !error && dp == NULL) {
2194 do {
2195 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp,
2196 np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
2197 nfhp->nfh_fh, nfhp->nfh_len,
2198 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
2199 name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
2200 if (ret == NFSERR_DELAY)
2201 (void) nfs_catnap(PZERO, ret, "nfs_crt2");
2202 } while (ret == NFSERR_DELAY);
2203 if (ret) {
2204 if (dp != NULL) {
2205 FREE((caddr_t)dp, M_NFSCLDELEG);
2206 dp = NULL;
2207 }
2208 if (ret == NFSERR_STALECLIENTID ||
2209 ret == NFSERR_STALEDONTRECOVER ||
2210 ret == NFSERR_BADSESSION)
2211 error = ret;
2212 }
2213 }
2214 nfscl_openrelease(nmp, op, error, newone);
2215 *unlockedp = 1;
2216 }
2217 if (nd->nd_repstat != 0 && error == 0)
2218 error = nd->nd_repstat;
2219 if (error == NFSERR_STALECLIENTID)
2220 nfscl_initiate_recovery(owp->nfsow_clp);
2221 nfsmout:
2222 if (!error)
2223 *dpp = dp;
2224 else if (dp != NULL)
2225 FREE((caddr_t)dp, M_NFSCLDELEG);
2226 mbuf_freem(nd->nd_mrep);
2227 return (error);
2228 }
2229
2230 /*
2231 * Nfs remove rpc
2232 */
2233 APPLESTATIC int
2234 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2235 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2236 void *dstuff)
2237 {
2238 u_int32_t *tl;
2239 struct nfsrv_descript nfsd, *nd = &nfsd;
2240 struct nfsnode *np;
2241 struct nfsmount *nmp;
2242 nfsv4stateid_t dstateid;
2243 int error, ret = 0, i;
2244
2245 *dattrflagp = 0;
2246 if (namelen > NFS_MAXNAMLEN)
2247 return (ENAMETOOLONG);
2248 nmp = VFSTONFS(vnode_mount(dvp));
2249 tryagain:
2250 if (NFSHASNFSV4(nmp) && ret == 0) {
2251 ret = nfscl_removedeleg(vp, p, &dstateid);
2252 if (ret == 1) {
2253 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2254 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2255 NFSX_UNSIGNED);
2256 if (NFSHASNFSV4N(nmp))
2257 *tl++ = 0;
2258 else
2259 *tl++ = dstateid.seqid;
2260 *tl++ = dstateid.other[0];
2261 *tl++ = dstateid.other[1];
2262 *tl++ = dstateid.other[2];
2263 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2264 np = VTONFS(dvp);
2265 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2266 np->n_fhp->nfh_len, 0);
2267 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2268 *tl = txdr_unsigned(NFSV4OP_REMOVE);
2269 }
2270 } else {
2271 ret = 0;
2272 }
2273 if (ret == 0)
2274 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2275 (void) nfsm_strtom(nd, name, namelen);
2276 error = nfscl_request(nd, dvp, p, cred, dstuff);
2277 if (error)
2278 return (error);
2279 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2280 /* For NFSv4, parse out any Delereturn replies. */
2281 if (ret > 0 && nd->nd_repstat != 0 &&
2282 (nd->nd_flag & ND_NOMOREDATA)) {
2283 /*
2284 * If the Delegreturn failed, try again without
2285 * it. The server will Recall, as required.
2286 */
2287 mbuf_freem(nd->nd_mrep);
2288 goto tryagain;
2289 }
2290 for (i = 0; i < (ret * 2); i++) {
2291 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2292 ND_NFSV4) {
2293 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2294 if (*(tl + 1))
2295 nd->nd_flag |= ND_NOMOREDATA;
2296 }
2297 }
2298 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2299 }
2300 if (nd->nd_repstat && !error)
2301 error = nd->nd_repstat;
2302 nfsmout:
2303 mbuf_freem(nd->nd_mrep);
2304 return (error);
2305 }
2306
2307 /*
2308 * Do an nfs rename rpc.
2309 */
2310 APPLESTATIC int
2311 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2312 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2313 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2314 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2315 {
2316 u_int32_t *tl;
2317 struct nfsrv_descript nfsd, *nd = &nfsd;
2318 struct nfsmount *nmp;
2319 struct nfsnode *np;
2320 nfsattrbit_t attrbits;
2321 nfsv4stateid_t fdstateid, tdstateid;
2322 int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2323
2324 *fattrflagp = 0;
2325 *tattrflagp = 0;
2326 nmp = VFSTONFS(vnode_mount(fdvp));
2327 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2328 return (ENAMETOOLONG);
2329 tryagain:
2330 if (NFSHASNFSV4(nmp) && ret == 0) {
2331 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2332 &tdstateid, &gottd, p);
2333 if (gotfd && gottd) {
2334 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2335 } else if (gotfd) {
2336 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2337 } else if (gottd) {
2338 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2339 }
2340 if (gotfd) {
2341 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2342 if (NFSHASNFSV4N(nmp))
2343 *tl++ = 0;
2344 else
2345 *tl++ = fdstateid.seqid;
2346 *tl++ = fdstateid.other[0];
2347 *tl++ = fdstateid.other[1];
2348 *tl = fdstateid.other[2];
2349 if (gottd) {
2350 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2351 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2352 np = VTONFS(tvp);
2353 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2354 np->n_fhp->nfh_len, 0);
2355 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2356 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2357 }
2358 }
2359 if (gottd) {
2360 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2361 if (NFSHASNFSV4N(nmp))
2362 *tl++ = 0;
2363 else
2364 *tl++ = tdstateid.seqid;
2365 *tl++ = tdstateid.other[0];
2366 *tl++ = tdstateid.other[1];
2367 *tl = tdstateid.other[2];
2368 }
2369 if (ret > 0) {
2370 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2371 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2372 np = VTONFS(fdvp);
2373 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2374 np->n_fhp->nfh_len, 0);
2375 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2376 *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2377 }
2378 } else {
2379 ret = 0;
2380 }
2381 if (ret == 0)
2382 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2383 if (nd->nd_flag & ND_NFSV4) {
2384 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2385 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2386 NFSWCCATTR_ATTRBIT(&attrbits);
2387 (void) nfsrv_putattrbit(nd, &attrbits);
2388 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2389 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2390 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2391 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2392 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2393 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2394 (void) nfsrv_putattrbit(nd, &attrbits);
2395 nd->nd_flag |= ND_V4WCCATTR;
2396 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2397 *tl = txdr_unsigned(NFSV4OP_RENAME);
2398 }
2399 (void) nfsm_strtom(nd, fnameptr, fnamelen);
2400 if (!(nd->nd_flag & ND_NFSV4))
2401 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2402 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2403 (void) nfsm_strtom(nd, tnameptr, tnamelen);
2404 error = nfscl_request(nd, fdvp, p, cred, fstuff);
2405 if (error)
2406 return (error);
2407 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2408 /* For NFSv4, parse out any Delereturn replies. */
2409 if (ret > 0 && nd->nd_repstat != 0 &&
2410 (nd->nd_flag & ND_NOMOREDATA)) {
2411 /*
2412 * If the Delegreturn failed, try again without
2413 * it. The server will Recall, as required.
2414 */
2415 mbuf_freem(nd->nd_mrep);
2416 goto tryagain;
2417 }
2418 for (i = 0; i < (ret * 2); i++) {
2419 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2420 ND_NFSV4) {
2421 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2422 if (*(tl + 1)) {
2423 if (i == 0 && ret > 1) {
2424 /*
2425 * If the Delegreturn failed, try again
2426 * without it. The server will Recall, as
2427 * required.
2428 * If ret > 1, the first iteration of this
2429 * loop is the second DelegReturn result.
2430 */
2431 mbuf_freem(nd->nd_mrep);
2432 goto tryagain;
2433 } else {
2434 nd->nd_flag |= ND_NOMOREDATA;
2435 }
2436 }
2437 }
2438 }
2439 /* Now, the first wcc attribute reply. */
2440 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2441 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2442 if (*(tl + 1))
2443 nd->nd_flag |= ND_NOMOREDATA;
2444 }
2445 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2446 fstuff);
2447 /* and the second wcc attribute reply. */
2448 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2449 !error) {
2450 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2451 if (*(tl + 1))
2452 nd->nd_flag |= ND_NOMOREDATA;
2453 }
2454 if (!error)
2455 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2456 NULL, tstuff);
2457 }
2458 if (nd->nd_repstat && !error)
2459 error = nd->nd_repstat;
2460 nfsmout:
2461 mbuf_freem(nd->nd_mrep);
2462 return (error);
2463 }
2464
2465 /*
2466 * nfs hard link create rpc
2467 */
2468 APPLESTATIC int
2469 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2470 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2471 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2472 {
2473 u_int32_t *tl;
2474 struct nfsrv_descript nfsd, *nd = &nfsd;
2475 nfsattrbit_t attrbits;
2476 int error = 0;
2477
2478 *attrflagp = 0;
2479 *dattrflagp = 0;
2480 if (namelen > NFS_MAXNAMLEN)
2481 return (ENAMETOOLONG);
2482 NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2483 if (nd->nd_flag & ND_NFSV4) {
2484 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2485 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2486 }
2487 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2488 VTONFS(dvp)->n_fhp->nfh_len, 0);
2489 if (nd->nd_flag & ND_NFSV4) {
2490 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2491 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2492 NFSWCCATTR_ATTRBIT(&attrbits);
2493 (void) nfsrv_putattrbit(nd, &attrbits);
2494 nd->nd_flag |= ND_V4WCCATTR;
2495 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2496 *tl = txdr_unsigned(NFSV4OP_LINK);
2497 }
2498 (void) nfsm_strtom(nd, name, namelen);
2499 error = nfscl_request(nd, vp, p, cred, dstuff);
2500 if (error)
2501 return (error);
2502 if (nd->nd_flag & ND_NFSV3) {
2503 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2504 if (!error)
2505 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2506 NULL, dstuff);
2507 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2508 /*
2509 * First, parse out the PutFH and Getattr result.
2510 */
2511 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2512 if (!(*(tl + 1)))
2513 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2514 if (*(tl + 1))
2515 nd->nd_flag |= ND_NOMOREDATA;
2516 /*
2517 * Get the pre-op attributes.
2518 */
2519 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2520 }
2521 if (nd->nd_repstat && !error)
2522 error = nd->nd_repstat;
2523 nfsmout:
2524 mbuf_freem(nd->nd_mrep);
2525 return (error);
2526 }
2527
2528 /*
2529 * nfs symbolic link create rpc
2530 */
2531 APPLESTATIC int
2532 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target,
2533 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2534 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2535 int *dattrflagp, void *dstuff)
2536 {
2537 u_int32_t *tl;
2538 struct nfsrv_descript nfsd, *nd = &nfsd;
2539 struct nfsmount *nmp;
2540 int slen, error = 0;
2541
2542 *nfhpp = NULL;
2543 *attrflagp = 0;
2544 *dattrflagp = 0;
2545 nmp = VFSTONFS(vnode_mount(dvp));
2546 slen = strlen(target);
2547 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2548 return (ENAMETOOLONG);
2549 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2550 if (nd->nd_flag & ND_NFSV4) {
2551 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2552 *tl = txdr_unsigned(NFLNK);
2553 (void) nfsm_strtom(nd, target, slen);
2554 }
2555 (void) nfsm_strtom(nd, name, namelen);
2556 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2557 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2558 if (!(nd->nd_flag & ND_NFSV4))
2559 (void) nfsm_strtom(nd, target, slen);
2560 if (nd->nd_flag & ND_NFSV2)
2561 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2562 error = nfscl_request(nd, dvp, p, cred, dstuff);
2563 if (error)
2564 return (error);
2565 if (nd->nd_flag & ND_NFSV4)
2566 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2567 if ((nd->nd_flag & ND_NFSV3) && !error) {
2568 if (!nd->nd_repstat)
2569 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2570 if (!error)
2571 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2572 NULL, dstuff);
2573 }
2574 if (nd->nd_repstat && !error)
2575 error = nd->nd_repstat;
2576 mbuf_freem(nd->nd_mrep);
2577 /*
2578 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2579 * Only do this if vfs.nfs.ignore_eexist is set.
2580 * Never do this for NFSv4.1 or later minor versions, since sessions
2581 * should guarantee "exactly once" RPC semantics.
2582 */
2583 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2584 nmp->nm_minorvers == 0))
2585 error = 0;
2586 return (error);
2587 }
2588
2589 /*
2590 * nfs make dir rpc
2591 */
2592 APPLESTATIC int
2593 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2594 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2595 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2596 int *dattrflagp, void *dstuff)
2597 {
2598 u_int32_t *tl;
2599 struct nfsrv_descript nfsd, *nd = &nfsd;
2600 nfsattrbit_t attrbits;
2601 int error = 0;
2602 struct nfsfh *fhp;
2603 struct nfsmount *nmp;
2604
2605 *nfhpp = NULL;
2606 *attrflagp = 0;
2607 *dattrflagp = 0;
2608 nmp = VFSTONFS(vnode_mount(dvp));
2609 fhp = VTONFS(dvp)->n_fhp;
2610 if (namelen > NFS_MAXNAMLEN)
2611 return (ENAMETOOLONG);
2612 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2613 if (nd->nd_flag & ND_NFSV4) {
2614 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2615 *tl = txdr_unsigned(NFDIR);
2616 }
2617 (void) nfsm_strtom(nd, name, namelen);
2618 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2619 if (nd->nd_flag & ND_NFSV4) {
2620 NFSGETATTR_ATTRBIT(&attrbits);
2621 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2622 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2623 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2624 (void) nfsrv_putattrbit(nd, &attrbits);
2625 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2626 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2627 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0);
2628 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2629 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2630 (void) nfsrv_putattrbit(nd, &attrbits);
2631 }
2632 error = nfscl_request(nd, dvp, p, cred, dstuff);
2633 if (error)
2634 return (error);
2635 if (nd->nd_flag & ND_NFSV4)
2636 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2637 if (!nd->nd_repstat && !error) {
2638 if (nd->nd_flag & ND_NFSV4) {
2639 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2640 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2641 }
2642 if (!error)
2643 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2644 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) {
2645 /* Get rid of the PutFH and Getattr status values. */
2646 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2647 /* Load the directory attributes. */
2648 error = nfsm_loadattr(nd, dnap);
2649 if (error == 0)
2650 *dattrflagp = 1;
2651 }
2652 }
2653 if ((nd->nd_flag & ND_NFSV3) && !error)
2654 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2655 if (nd->nd_repstat && !error)
2656 error = nd->nd_repstat;
2657 nfsmout:
2658 mbuf_freem(nd->nd_mrep);
2659 /*
2660 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2661 * Only do this if vfs.nfs.ignore_eexist is set.
2662 * Never do this for NFSv4.1 or later minor versions, since sessions
2663 * should guarantee "exactly once" RPC semantics.
2664 */
2665 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2666 nmp->nm_minorvers == 0))
2667 error = 0;
2668 return (error);
2669 }
2670
2671 /*
2672 * nfs remove directory call
2673 */
2674 APPLESTATIC int
2675 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2676 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2677 {
2678 struct nfsrv_descript nfsd, *nd = &nfsd;
2679 int error = 0;
2680
2681 *dattrflagp = 0;
2682 if (namelen > NFS_MAXNAMLEN)
2683 return (ENAMETOOLONG);
2684 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2685 (void) nfsm_strtom(nd, name, namelen);
2686 error = nfscl_request(nd, dvp, p, cred, dstuff);
2687 if (error)
2688 return (error);
2689 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2690 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2691 if (nd->nd_repstat && !error)
2692 error = nd->nd_repstat;
2693 mbuf_freem(nd->nd_mrep);
2694 /*
2695 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2696 */
2697 if (error == ENOENT)
2698 error = 0;
2699 return (error);
2700 }
2701
2702 /*
2703 * Readdir rpc.
2704 * Always returns with either uio_resid unchanged, if you are at the
2705 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2706 * filled in.
2707 * I felt this would allow caching of directory blocks more easily
2708 * than returning a pertially filled block.
2709 * Directory offset cookies:
2710 * Oh my, what to do with them...
2711 * I can think of three ways to deal with them:
2712 * 1 - have the layer above these RPCs maintain a map between logical
2713 * directory byte offsets and the NFS directory offset cookies
2714 * 2 - pass the opaque directory offset cookies up into userland
2715 * and let the libc functions deal with them, via the system call
2716 * 3 - return them to userland in the "struct dirent", so future versions
2717 * of libc can use them and do whatever is necessary to make things work
2718 * above these rpc calls, in the meantime
2719 * For now, I do #3 by "hiding" the directory offset cookies after the
2720 * d_name field in struct dirent. This is space inside d_reclen that
2721 * will be ignored by anything that doesn't know about them.
2722 * The directory offset cookies are filled in as the last 8 bytes of
2723 * each directory entry, after d_name. Someday, the userland libc
2724 * functions may be able to use these. In the meantime, it satisfies
2725 * OpenBSD's requirements for cookies being returned.
2726 * If expects the directory offset cookie for the read to be in uio_offset
2727 * and returns the one for the next entry after this directory block in
2728 * there, as well.
2729 */
2730 APPLESTATIC int
2731 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2732 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2733 int *eofp, void *stuff)
2734 {
2735 int len, left;
2736 struct dirent *dp = NULL;
2737 u_int32_t *tl;
2738 nfsquad_t cookie, ncookie;
2739 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2740 struct nfsnode *dnp = VTONFS(vp);
2741 struct nfsvattr nfsva;
2742 struct nfsrv_descript nfsd, *nd = &nfsd;
2743 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2744 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2745 long dotfileid, dotdotfileid = 0;
2746 u_int32_t fakefileno = 0xffffffff, rderr;
2747 char *cp;
2748 nfsattrbit_t attrbits, dattrbits;
2749 u_int32_t *tl2 = NULL;
2750 size_t tresid;
2751
2752 KASSERT(uiop->uio_iovcnt == 1 &&
2753 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2754 ("nfs readdirrpc bad uio"));
2755
2756 /*
2757 * There is no point in reading a lot more than uio_resid, however
2758 * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2759 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2760 * will never make readsize > nm_readdirsize.
2761 */
2762 readsize = nmp->nm_readdirsize;
2763 if (readsize > uio_uio_resid(uiop))
2764 readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
2765
2766 *attrflagp = 0;
2767 if (eofp)
2768 *eofp = 0;
2769 tresid = uio_uio_resid(uiop);
2770 cookie.lval[0] = cookiep->nfsuquad[0];
2771 cookie.lval[1] = cookiep->nfsuquad[1];
2772 nd->nd_mrep = NULL;
2773
2774 /*
2775 * For NFSv4, first create the "." and ".." entries.
2776 */
2777 if (NFSHASNFSV4(nmp)) {
2778 reqsize = 6 * NFSX_UNSIGNED;
2779 NFSGETATTR_ATTRBIT(&dattrbits);
2780 NFSZERO_ATTRBIT(&attrbits);
2781 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2782 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2783 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2784 NFSATTRBIT_MOUNTEDONFILEID)) {
2785 NFSSETBIT_ATTRBIT(&attrbits,
2786 NFSATTRBIT_MOUNTEDONFILEID);
2787 gotmnton = 1;
2788 } else {
2789 /*
2790 * Must fake it. Use the fileno, except when the
2791 * fsid is != to that of the directory. For that
2792 * case, generate a fake fileno that is not the same.
2793 */
2794 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2795 gotmnton = 0;
2796 }
2797
2798 /*
2799 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2800 */
2801 if (uiop->uio_offset == 0) {
2802 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2803 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2804 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2805 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2806 (void) nfsrv_putattrbit(nd, &attrbits);
2807 error = nfscl_request(nd, vp, p, cred, stuff);
2808 if (error)
2809 return (error);
2810 dotfileid = 0; /* Fake out the compiler. */
2811 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
2812 error = nfsm_loadattr(nd, &nfsva);
2813 if (error != 0)
2814 goto nfsmout;
2815 dotfileid = nfsva.na_fileid;
2816 }
2817 if (nd->nd_repstat == 0) {
2818 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2819 len = fxdr_unsigned(int, *(tl + 4));
2820 if (len > 0 && len <= NFSX_V4FHMAX)
2821 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2822 else
2823 error = EPERM;
2824 if (!error) {
2825 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2826 nfsva.na_mntonfileno = 0xffffffff;
2827 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2828 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2829 NULL, NULL, NULL, p, cred);
2830 if (error) {
2831 dotdotfileid = dotfileid;
2832 } else if (gotmnton) {
2833 if (nfsva.na_mntonfileno != 0xffffffff)
2834 dotdotfileid = nfsva.na_mntonfileno;
2835 else
2836 dotdotfileid = nfsva.na_fileid;
2837 } else if (nfsva.na_filesid[0] ==
2838 dnp->n_vattr.na_filesid[0] &&
2839 nfsva.na_filesid[1] ==
2840 dnp->n_vattr.na_filesid[1]) {
2841 dotdotfileid = nfsva.na_fileid;
2842 } else {
2843 do {
2844 fakefileno--;
2845 } while (fakefileno ==
2846 nfsva.na_fileid);
2847 dotdotfileid = fakefileno;
2848 }
2849 }
2850 } else if (nd->nd_repstat == NFSERR_NOENT) {
2851 /*
2852 * Lookupp returns NFSERR_NOENT when we are
2853 * at the root, so just use the current dir.
2854 */
2855 nd->nd_repstat = 0;
2856 dotdotfileid = dotfileid;
2857 } else {
2858 error = nd->nd_repstat;
2859 }
2860 mbuf_freem(nd->nd_mrep);
2861 if (error)
2862 return (error);
2863 nd->nd_mrep = NULL;
2864 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2865 dp->d_type = DT_DIR;
2866 dp->d_fileno = dotfileid;
2867 dp->d_namlen = 1;
2868 dp->d_name[0] = '.';
2869 dp->d_name[1] = '\0';
2870 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2871 /*
2872 * Just make these offset cookie 0.
2873 */
2874 tl = (u_int32_t *)&dp->d_name[4];
2875 *tl++ = 0;
2876 *tl = 0;
2877 blksiz += dp->d_reclen;
2878 uio_uio_resid_add(uiop, -(dp->d_reclen));
2879 uiop->uio_offset += dp->d_reclen;
2880 uio_iov_base_add(uiop, dp->d_reclen);
2881 uio_iov_len_add(uiop, -(dp->d_reclen));
2882 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2883 dp->d_type = DT_DIR;
2884 dp->d_fileno = dotdotfileid;
2885 dp->d_namlen = 2;
2886 dp->d_name[0] = '.';
2887 dp->d_name[1] = '.';
2888 dp->d_name[2] = '\0';
2889 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2890 /*
2891 * Just make these offset cookie 0.
2892 */
2893 tl = (u_int32_t *)&dp->d_name[4];
2894 *tl++ = 0;
2895 *tl = 0;
2896 blksiz += dp->d_reclen;
2897 uio_uio_resid_add(uiop, -(dp->d_reclen));
2898 uiop->uio_offset += dp->d_reclen;
2899 uio_iov_base_add(uiop, dp->d_reclen);
2900 uio_iov_len_add(uiop, -(dp->d_reclen));
2901 }
2902 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
2903 } else {
2904 reqsize = 5 * NFSX_UNSIGNED;
2905 }
2906
2907
2908 /*
2909 * Loop around doing readdir rpc's of size readsize.
2910 * The stopping criteria is EOF or buffer full.
2911 */
2912 while (more_dirs && bigenough) {
2913 *attrflagp = 0;
2914 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
2915 if (nd->nd_flag & ND_NFSV2) {
2916 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2917 *tl++ = cookie.lval[1];
2918 *tl = txdr_unsigned(readsize);
2919 } else {
2920 NFSM_BUILD(tl, u_int32_t *, reqsize);
2921 *tl++ = cookie.lval[0];
2922 *tl++ = cookie.lval[1];
2923 if (cookie.qval == 0) {
2924 *tl++ = 0;
2925 *tl++ = 0;
2926 } else {
2927 NFSLOCKNODE(dnp);
2928 *tl++ = dnp->n_cookieverf.nfsuquad[0];
2929 *tl++ = dnp->n_cookieverf.nfsuquad[1];
2930 NFSUNLOCKNODE(dnp);
2931 }
2932 if (nd->nd_flag & ND_NFSV4) {
2933 *tl++ = txdr_unsigned(readsize);
2934 *tl = txdr_unsigned(readsize);
2935 (void) nfsrv_putattrbit(nd, &attrbits);
2936 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2937 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2938 (void) nfsrv_putattrbit(nd, &dattrbits);
2939 } else {
2940 *tl = txdr_unsigned(readsize);
2941 }
2942 }
2943 error = nfscl_request(nd, vp, p, cred, stuff);
2944 if (error)
2945 return (error);
2946 if (!(nd->nd_flag & ND_NFSV2)) {
2947 if (nd->nd_flag & ND_NFSV3)
2948 error = nfscl_postop_attr(nd, nap, attrflagp,
2949 stuff);
2950 if (!nd->nd_repstat && !error) {
2951 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2952 NFSLOCKNODE(dnp);
2953 dnp->n_cookieverf.nfsuquad[0] = *tl++;
2954 dnp->n_cookieverf.nfsuquad[1] = *tl;
2955 NFSUNLOCKNODE(dnp);
2956 }
2957 }
2958 if (nd->nd_repstat || error) {
2959 if (!error)
2960 error = nd->nd_repstat;
2961 goto nfsmout;
2962 }
2963 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2964 more_dirs = fxdr_unsigned(int, *tl);
2965 if (!more_dirs)
2966 tryformoredirs = 0;
2967
2968 /* loop through the dir entries, doctoring them to 4bsd form */
2969 while (more_dirs && bigenough) {
2970 if (nd->nd_flag & ND_NFSV4) {
2971 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2972 ncookie.lval[0] = *tl++;
2973 ncookie.lval[1] = *tl++;
2974 len = fxdr_unsigned(int, *tl);
2975 } else if (nd->nd_flag & ND_NFSV3) {
2976 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2977 nfsva.na_fileid = fxdr_hyper(tl);
2978 tl += 2;
2979 len = fxdr_unsigned(int, *tl);
2980 } else {
2981 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2982 nfsva.na_fileid =
2983 fxdr_unsigned(long, *tl++);
2984 len = fxdr_unsigned(int, *tl);
2985 }
2986 if (len <= 0 || len > NFS_MAXNAMLEN) {
2987 error = EBADRPC;
2988 goto nfsmout;
2989 }
2990 tlen = NFSM_RNDUP(len);
2991 if (tlen == len)
2992 tlen += 4; /* To ensure null termination */
2993 left = DIRBLKSIZ - blksiz;
2994 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) {
2995 dp->d_reclen += left;
2996 uio_iov_base_add(uiop, left);
2997 uio_iov_len_add(uiop, -(left));
2998 uio_uio_resid_add(uiop, -(left));
2999 uiop->uio_offset += left;
3000 blksiz = 0;
3001 }
3002 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
3003 bigenough = 0;
3004 if (bigenough) {
3005 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
3006 dp->d_namlen = len;
3007 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
3008 dp->d_type = DT_UNKNOWN;
3009 blksiz += dp->d_reclen;
3010 if (blksiz == DIRBLKSIZ)
3011 blksiz = 0;
3012 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3013 uiop->uio_offset += DIRHDSIZ;
3014 uio_iov_base_add(uiop, DIRHDSIZ);
3015 uio_iov_len_add(uiop, -(DIRHDSIZ));
3016 error = nfsm_mbufuio(nd, uiop, len);
3017 if (error)
3018 goto nfsmout;
3019 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
3020 tlen -= len;
3021 *cp = '\0'; /* null terminate */
3022 cp += tlen; /* points to cookie storage */
3023 tl2 = (u_int32_t *)cp;
3024 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3025 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3026 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3027 uiop->uio_offset += (tlen + NFSX_HYPER);
3028 } else {
3029 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3030 if (error)
3031 goto nfsmout;
3032 }
3033 if (nd->nd_flag & ND_NFSV4) {
3034 rderr = 0;
3035 nfsva.na_mntonfileno = 0xffffffff;
3036 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3037 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3038 NULL, NULL, &rderr, p, cred);
3039 if (error)
3040 goto nfsmout;
3041 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3042 } else if (nd->nd_flag & ND_NFSV3) {
3043 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3044 ncookie.lval[0] = *tl++;
3045 ncookie.lval[1] = *tl++;
3046 } else {
3047 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3048 ncookie.lval[0] = 0;
3049 ncookie.lval[1] = *tl++;
3050 }
3051 if (bigenough) {
3052 if (nd->nd_flag & ND_NFSV4) {
3053 if (rderr) {
3054 dp->d_fileno = 0;
3055 } else {
3056 if (gotmnton) {
3057 if (nfsva.na_mntonfileno != 0xffffffff)
3058 dp->d_fileno = nfsva.na_mntonfileno;
3059 else
3060 dp->d_fileno = nfsva.na_fileid;
3061 } else if (nfsva.na_filesid[0] ==
3062 dnp->n_vattr.na_filesid[0] &&
3063 nfsva.na_filesid[1] ==
3064 dnp->n_vattr.na_filesid[1]) {
3065 dp->d_fileno = nfsva.na_fileid;
3066 } else {
3067 do {
3068 fakefileno--;
3069 } while (fakefileno ==
3070 nfsva.na_fileid);
3071 dp->d_fileno = fakefileno;
3072 }
3073 dp->d_type = vtonfs_dtype(nfsva.na_type);
3074 }
3075 } else {
3076 dp->d_fileno = nfsva.na_fileid;
3077 }
3078 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3079 ncookie.lval[0];
3080 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3081 ncookie.lval[1];
3082 }
3083 more_dirs = fxdr_unsigned(int, *tl);
3084 }
3085 /*
3086 * If at end of rpc data, get the eof boolean
3087 */
3088 if (!more_dirs) {
3089 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3090 eof = fxdr_unsigned(int, *tl);
3091 if (tryformoredirs)
3092 more_dirs = !eof;
3093 if (nd->nd_flag & ND_NFSV4) {
3094 error = nfscl_postop_attr(nd, nap, attrflagp,
3095 stuff);
3096 if (error)
3097 goto nfsmout;
3098 }
3099 }
3100 mbuf_freem(nd->nd_mrep);
3101 nd->nd_mrep = NULL;
3102 }
3103 /*
3104 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3105 * by increasing d_reclen for the last record.
3106 */
3107 if (blksiz > 0) {
3108 left = DIRBLKSIZ - blksiz;
3109 dp->d_reclen += left;
3110 uio_iov_base_add(uiop, left);
3111 uio_iov_len_add(uiop, -(left));
3112 uio_uio_resid_add(uiop, -(left));
3113 uiop->uio_offset += left;
3114 }
3115
3116 /*
3117 * If returning no data, assume end of file.
3118 * If not bigenough, return not end of file, since you aren't
3119 * returning all the data
3120 * Otherwise, return the eof flag from the server.
3121 */
3122 if (eofp) {
3123 if (tresid == ((size_t)(uio_uio_resid(uiop))))
3124 *eofp = 1;
3125 else if (!bigenough)
3126 *eofp = 0;
3127 else
3128 *eofp = eof;
3129 }
3130
3131 /*
3132 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3133 */
3134 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) {
3135 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
3136 dp->d_type = DT_UNKNOWN;
3137 dp->d_fileno = 0;
3138 dp->d_namlen = 0;
3139 dp->d_name[0] = '\0';
3140 tl = (u_int32_t *)&dp->d_name[4];
3141 *tl++ = cookie.lval[0];
3142 *tl = cookie.lval[1];
3143 dp->d_reclen = DIRBLKSIZ;
3144 uio_iov_base_add(uiop, DIRBLKSIZ);
3145 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3146 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3147 uiop->uio_offset += DIRBLKSIZ;
3148 }
3149
3150 nfsmout:
3151 if (nd->nd_mrep != NULL)
3152 mbuf_freem(nd->nd_mrep);
3153 return (error);
3154 }
3155
3156 #ifndef APPLE
3157 /*
3158 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
3159 * (Also used for NFS V4 when mount flag set.)
3160 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
3161 */
3162 APPLESTATIC int
3163 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
3164 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3165 int *eofp, void *stuff)
3166 {
3167 int len, left;
3168 struct dirent *dp = NULL;
3169 u_int32_t *tl;
3170 vnode_t newvp = NULLVP;
3171 struct nfsrv_descript nfsd, *nd = &nfsd;
3172 struct nameidata nami, *ndp = &nami;
3173 struct componentname *cnp = &ndp->ni_cnd;
3174 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3175 struct nfsnode *dnp = VTONFS(vp), *np;
3176 struct nfsvattr nfsva;
3177 struct nfsfh *nfhp;
3178 nfsquad_t cookie, ncookie;
3179 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
3180 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
3181 int isdotdot = 0, unlocknewvp = 0;
3182 long dotfileid, dotdotfileid = 0, fileno = 0;
3183 char *cp;
3184 nfsattrbit_t attrbits, dattrbits;
3185 size_t tresid;
3186 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
3187 struct timespec dctime;
3188
3189 KASSERT(uiop->uio_iovcnt == 1 &&
3190 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
3191 ("nfs readdirplusrpc bad uio"));
3192 timespecclear(&dctime);
3193 *attrflagp = 0;
3194 if (eofp != NULL)
3195 *eofp = 0;
3196 ndp->ni_dvp = vp;
3197 nd->nd_mrep = NULL;
3198 cookie.lval[0] = cookiep->nfsuquad[0];
3199 cookie.lval[1] = cookiep->nfsuquad[1];
3200 tresid = uio_uio_resid(uiop);
3201
3202 /*
3203 * For NFSv4, first create the "." and ".." entries.
3204 */
3205 if (NFSHASNFSV4(nmp)) {
3206 NFSGETATTR_ATTRBIT(&dattrbits);
3207 NFSZERO_ATTRBIT(&attrbits);
3208 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
3209 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
3210 NFSATTRBIT_MOUNTEDONFILEID)) {
3211 NFSSETBIT_ATTRBIT(&attrbits,
3212 NFSATTRBIT_MOUNTEDONFILEID);
3213 gotmnton = 1;
3214 } else {
3215 /*
3216 * Must fake it. Use the fileno, except when the
3217 * fsid is != to that of the directory. For that
3218 * case, generate a fake fileno that is not the same.
3219 */
3220 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
3221 gotmnton = 0;
3222 }
3223
3224 /*
3225 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
3226 */
3227 if (uiop->uio_offset == 0) {
3228 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
3229 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3230 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
3231 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3232 (void) nfsrv_putattrbit(nd, &attrbits);
3233 error = nfscl_request(nd, vp, p, cred, stuff);
3234 if (error)
3235 return (error);
3236 dotfileid = 0; /* Fake out the compiler. */
3237 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
3238 error = nfsm_loadattr(nd, &nfsva);
3239 if (error != 0)
3240 goto nfsmout;
3241 dctime = nfsva.na_ctime;
3242 dotfileid = nfsva.na_fileid;
3243 }
3244 if (nd->nd_repstat == 0) {
3245 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
3246 len = fxdr_unsigned(int, *(tl + 4));
3247 if (len > 0 && len <= NFSX_V4FHMAX)
3248 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3249 else
3250 error = EPERM;
3251 if (!error) {
3252 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3253 nfsva.na_mntonfileno = 0xffffffff;
3254 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3255 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3256 NULL, NULL, NULL, p, cred);
3257 if (error) {
3258 dotdotfileid = dotfileid;
3259 } else if (gotmnton) {
3260 if (nfsva.na_mntonfileno != 0xffffffff)
3261 dotdotfileid = nfsva.na_mntonfileno;
3262 else
3263 dotdotfileid = nfsva.na_fileid;
3264 } else if (nfsva.na_filesid[0] ==
3265 dnp->n_vattr.na_filesid[0] &&
3266 nfsva.na_filesid[1] ==
3267 dnp->n_vattr.na_filesid[1]) {
3268 dotdotfileid = nfsva.na_fileid;
3269 } else {
3270 do {
3271 fakefileno--;
3272 } while (fakefileno ==
3273 nfsva.na_fileid);
3274 dotdotfileid = fakefileno;
3275 }
3276 }
3277 } else if (nd->nd_repstat == NFSERR_NOENT) {
3278 /*
3279 * Lookupp returns NFSERR_NOENT when we are
3280 * at the root, so just use the current dir.
3281 */
3282 nd->nd_repstat = 0;
3283 dotdotfileid = dotfileid;
3284 } else {
3285 error = nd->nd_repstat;
3286 }
3287 mbuf_freem(nd->nd_mrep);
3288 if (error)
3289 return (error);
3290 nd->nd_mrep = NULL;
3291 dp = (struct dirent *)uio_iov_base(uiop);
3292 dp->d_type = DT_DIR;
3293 dp->d_fileno = dotfileid;
3294 dp->d_namlen = 1;
3295 dp->d_name[0] = '.';
3296 dp->d_name[1] = '\0';
3297 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3298 /*
3299 * Just make these offset cookie 0.
3300 */
3301 tl = (u_int32_t *)&dp->d_name[4];
3302 *tl++ = 0;
3303 *tl = 0;
3304 blksiz += dp->d_reclen;
3305 uio_uio_resid_add(uiop, -(dp->d_reclen));
3306 uiop->uio_offset += dp->d_reclen;
3307 uio_iov_base_add(uiop, dp->d_reclen);
3308 uio_iov_len_add(uiop, -(dp->d_reclen));
3309 dp = (struct dirent *)uio_iov_base(uiop);
3310 dp->d_type = DT_DIR;
3311 dp->d_fileno = dotdotfileid;
3312 dp->d_namlen = 2;
3313 dp->d_name[0] = '.';
3314 dp->d_name[1] = '.';
3315 dp->d_name[2] = '\0';
3316 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3317 /*
3318 * Just make these offset cookie 0.
3319 */
3320 tl = (u_int32_t *)&dp->d_name[4];
3321 *tl++ = 0;
3322 *tl = 0;
3323 blksiz += dp->d_reclen;
3324 uio_uio_resid_add(uiop, -(dp->d_reclen));
3325 uiop->uio_offset += dp->d_reclen;
3326 uio_iov_base_add(uiop, dp->d_reclen);
3327 uio_iov_len_add(uiop, -(dp->d_reclen));
3328 }
3329 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3330 if (gotmnton)
3331 NFSSETBIT_ATTRBIT(&attrbits,
3332 NFSATTRBIT_MOUNTEDONFILEID);
3333 }
3334
3335 /*
3336 * Loop around doing readdir rpc's of size nm_readdirsize.
3337 * The stopping criteria is EOF or buffer full.
3338 */
3339 while (more_dirs && bigenough) {
3340 *attrflagp = 0;
3341 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3342 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3343 *tl++ = cookie.lval[0];
3344 *tl++ = cookie.lval[1];
3345 if (cookie.qval == 0) {
3346 *tl++ = 0;
3347 *tl++ = 0;
3348 } else {
3349 NFSLOCKNODE(dnp);
3350 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3351 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3352 NFSUNLOCKNODE(dnp);
3353 }
3354 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3355 *tl = txdr_unsigned(nmp->nm_readdirsize);
3356 if (nd->nd_flag & ND_NFSV4) {
3357 (void) nfsrv_putattrbit(nd, &attrbits);
3358 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3359 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3360 (void) nfsrv_putattrbit(nd, &dattrbits);
3361 }
3362 error = nfscl_request(nd, vp, p, cred, stuff);
3363 if (error)
3364 return (error);
3365 if (nd->nd_flag & ND_NFSV3)
3366 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3367 if (nd->nd_repstat || error) {
3368 if (!error)
3369 error = nd->nd_repstat;
3370 goto nfsmout;
3371 }
3372 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
3373 dctime = nap->na_ctime;
3374 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3375 NFSLOCKNODE(dnp);
3376 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3377 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3378 NFSUNLOCKNODE(dnp);
3379 more_dirs = fxdr_unsigned(int, *tl);
3380 if (!more_dirs)
3381 tryformoredirs = 0;
3382
3383 /* loop through the dir entries, doctoring them to 4bsd form */
3384 while (more_dirs && bigenough) {
3385 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3386 if (nd->nd_flag & ND_NFSV4) {
3387 ncookie.lval[0] = *tl++;
3388 ncookie.lval[1] = *tl++;
3389 } else {
3390 fileno = fxdr_unsigned(long, *++tl);
3391 tl++;
3392 }
3393 len = fxdr_unsigned(int, *tl);
3394 if (len <= 0 || len > NFS_MAXNAMLEN) {
3395 error = EBADRPC;
3396 goto nfsmout;
3397 }
3398 tlen = NFSM_RNDUP(len);
3399 if (tlen == len)
3400 tlen += 4; /* To ensure null termination */
3401 left = DIRBLKSIZ - blksiz;
3402 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) {
3403 dp->d_reclen += left;
3404 uio_iov_base_add(uiop, left);
3405 uio_iov_len_add(uiop, -(left));
3406 uio_uio_resid_add(uiop, -(left));
3407 uiop->uio_offset += left;
3408 blksiz = 0;
3409 }
3410 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
3411 bigenough = 0;
3412 if (bigenough) {
3413 dp = (struct dirent *)uio_iov_base(uiop);
3414 dp->d_namlen = len;
3415 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
3416 dp->d_type = DT_UNKNOWN;
3417 blksiz += dp->d_reclen;
3418 if (blksiz == DIRBLKSIZ)
3419 blksiz = 0;
3420 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3421 uiop->uio_offset += DIRHDSIZ;
3422 uio_iov_base_add(uiop, DIRHDSIZ);
3423 uio_iov_len_add(uiop, -(DIRHDSIZ));
3424 cnp->cn_nameptr = uio_iov_base(uiop);
3425 cnp->cn_namelen = len;
3426 NFSCNHASHZERO(cnp);
3427 error = nfsm_mbufuio(nd, uiop, len);
3428 if (error)
3429 goto nfsmout;
3430 cp = uio_iov_base(uiop);
3431 tlen -= len;
3432 *cp = '\0';
3433 cp += tlen; /* points to cookie storage */
3434 tl2 = (u_int32_t *)cp;
3435 if (len == 2 && cnp->cn_nameptr[0] == '.' &&
3436 cnp->cn_nameptr[1] == '.')
3437 isdotdot = 1;
3438 else
3439 isdotdot = 0;
3440 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3441 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3442 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3443 uiop->uio_offset += (tlen + NFSX_HYPER);
3444 } else {
3445 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3446 if (error)
3447 goto nfsmout;
3448 }
3449 nfhp = NULL;
3450 if (nd->nd_flag & ND_NFSV3) {
3451 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3452 ncookie.lval[0] = *tl++;
3453 ncookie.lval[1] = *tl++;
3454 attrflag = fxdr_unsigned(int, *tl);
3455 if (attrflag) {
3456 error = nfsm_loadattr(nd, &nfsva);
3457 if (error)
3458 goto nfsmout;
3459 }
3460 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3461 if (*tl) {
3462 error = nfsm_getfh(nd, &nfhp);
3463 if (error)
3464 goto nfsmout;
3465 }
3466 if (!attrflag && nfhp != NULL) {
3467 FREE((caddr_t)nfhp, M_NFSFH);
3468 nfhp = NULL;
3469 }
3470 } else {
3471 rderr = 0;
3472 nfsva.na_mntonfileno = 0xffffffff;
3473 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3474 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3475 NULL, NULL, &rderr, p, cred);
3476 if (error)
3477 goto nfsmout;
3478 }
3479
3480 if (bigenough) {
3481 if (nd->nd_flag & ND_NFSV4) {
3482 if (rderr) {
3483 dp->d_fileno = 0;
3484 } else if (gotmnton) {
3485 if (nfsva.na_mntonfileno != 0xffffffff)
3486 dp->d_fileno = nfsva.na_mntonfileno;
3487 else
3488 dp->d_fileno = nfsva.na_fileid;
3489 } else if (nfsva.na_filesid[0] ==
3490 dnp->n_vattr.na_filesid[0] &&
3491 nfsva.na_filesid[1] ==
3492 dnp->n_vattr.na_filesid[1]) {
3493 dp->d_fileno = nfsva.na_fileid;
3494 } else {
3495 do {
3496 fakefileno--;
3497 } while (fakefileno ==
3498 nfsva.na_fileid);
3499 dp->d_fileno = fakefileno;
3500 }
3501 } else {
3502 dp->d_fileno = fileno;
3503 }
3504 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3505 ncookie.lval[0];
3506 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3507 ncookie.lval[1];
3508
3509 if (nfhp != NULL) {
3510 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3511 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3512 VREF(vp);
3513 newvp = vp;
3514 unlocknewvp = 0;
3515 FREE((caddr_t)nfhp, M_NFSFH);
3516 np = dnp;
3517 } else if (isdotdot != 0) {
3518 /*
3519 * Skip doing a nfscl_nget() call for "..".
3520 * There's a race between acquiring the nfs
3521 * node here and lookups that look for the
3522 * directory being read (in the parent).
3523 * It would try to get a lock on ".." here,
3524 * owning the lock on the directory being
3525 * read. Lookup will hold the lock on ".."
3526 * and try to acquire the lock on the
3527 * directory being read.
3528 * If the directory is unlocked/relocked,
3529 * then there is a LOR with the buflock
3530 * vp is relocked.
3531 */
3532 free(nfhp, M_NFSFH);
3533 } else {
3534 error = nfscl_nget(vnode_mount(vp), vp,
3535 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
3536 if (!error) {
3537 newvp = NFSTOV(np);
3538 unlocknewvp = 1;
3539 }
3540 }
3541 nfhp = NULL;
3542 if (newvp != NULLVP) {
3543 error = nfscl_loadattrcache(&newvp,
3544 &nfsva, NULL, NULL, 0, 0);
3545 if (error) {
3546 if (unlocknewvp)
3547 vput(newvp);
3548 else
3549 vrele(newvp);
3550 goto nfsmout;
3551 }
3552 dp->d_type =
3553 vtonfs_dtype(np->n_vattr.na_type);
3554 ndp->ni_vp = newvp;
3555 NFSCNHASH(cnp, HASHINIT);
3556 if (cnp->cn_namelen <= NCHNAMLEN &&
3557 (newvp->v_type != VDIR ||
3558 dctime.tv_sec != 0)) {
3559 cache_enter_time(ndp->ni_dvp,
3560 ndp->ni_vp, cnp,
3561 &nfsva.na_ctime,
3562 newvp->v_type != VDIR ? NULL :
3563 &dctime);
3564 }
3565 if (unlocknewvp)
3566 vput(newvp);
3567 else
3568 vrele(newvp);
3569 newvp = NULLVP;
3570 }
3571 }
3572 } else if (nfhp != NULL) {
3573 FREE((caddr_t)nfhp, M_NFSFH);
3574 }
3575 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3576 more_dirs = fxdr_unsigned(int, *tl);
3577 }
3578 /*
3579 * If at end of rpc data, get the eof boolean
3580 */
3581 if (!more_dirs) {
3582 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3583 eof = fxdr_unsigned(int, *tl);
3584 if (tryformoredirs)
3585 more_dirs = !eof;
3586 if (nd->nd_flag & ND_NFSV4) {
3587 error = nfscl_postop_attr(nd, nap, attrflagp,
3588 stuff);
3589 if (error)
3590 goto nfsmout;
3591 }
3592 }
3593 mbuf_freem(nd->nd_mrep);
3594 nd->nd_mrep = NULL;
3595 }
3596 /*
3597 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3598 * by increasing d_reclen for the last record.
3599 */
3600 if (blksiz > 0) {
3601 left = DIRBLKSIZ - blksiz;
3602 dp->d_reclen += left;
3603 uio_iov_base_add(uiop, left);
3604 uio_iov_len_add(uiop, -(left));
3605 uio_uio_resid_add(uiop, -(left));
3606 uiop->uio_offset += left;
3607 }
3608
3609 /*
3610 * If returning no data, assume end of file.
3611 * If not bigenough, return not end of file, since you aren't
3612 * returning all the data
3613 * Otherwise, return the eof flag from the server.
3614 */
3615 if (eofp != NULL) {
3616 if (tresid == uio_uio_resid(uiop))
3617 *eofp = 1;
3618 else if (!bigenough)
3619 *eofp = 0;
3620 else
3621 *eofp = eof;
3622 }
3623
3624 /*
3625 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3626 */
3627 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
3628 dp = (struct dirent *)uio_iov_base(uiop);
3629 dp->d_type = DT_UNKNOWN;
3630 dp->d_fileno = 0;
3631 dp->d_namlen = 0;
3632 dp->d_name[0] = '\0';
3633 tl = (u_int32_t *)&dp->d_name[4];
3634 *tl++ = cookie.lval[0];
3635 *tl = cookie.lval[1];
3636 dp->d_reclen = DIRBLKSIZ;
3637 uio_iov_base_add(uiop, DIRBLKSIZ);
3638 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3639 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3640 uiop->uio_offset += DIRBLKSIZ;
3641 }
3642
3643 nfsmout:
3644 if (nd->nd_mrep != NULL)
3645 mbuf_freem(nd->nd_mrep);
3646 return (error);
3647 }
3648 #endif /* !APPLE */
3649
3650 /*
3651 * Nfs commit rpc
3652 */
3653 APPLESTATIC int
3654 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3655 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3656 {
3657 u_int32_t *tl;
3658 struct nfsrv_descript nfsd, *nd = &nfsd;
3659 nfsattrbit_t attrbits;
3660 int error;
3661 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3662
3663 *attrflagp = 0;
3664 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3665 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3666 txdr_hyper(offset, tl);
3667 tl += 2;
3668 *tl = txdr_unsigned(cnt);
3669 if (nd->nd_flag & ND_NFSV4) {
3670 /*
3671 * And do a Getattr op.
3672 */
3673 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3674 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3675 NFSGETATTR_ATTRBIT(&attrbits);
3676 (void) nfsrv_putattrbit(nd, &attrbits);
3677 }
3678 error = nfscl_request(nd, vp, p, cred, stuff);
3679 if (error)
3680 return (error);
3681 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3682 if (!error && !nd->nd_repstat) {
3683 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3684 NFSLOCKMNT(nmp);
3685 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) {
3686 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
3687 nd->nd_repstat = NFSERR_STALEWRITEVERF;
3688 }
3689 NFSUNLOCKMNT(nmp);
3690 if (nd->nd_flag & ND_NFSV4)
3691 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3692 }
3693 nfsmout:
3694 if (!error && nd->nd_repstat)
3695 error = nd->nd_repstat;
3696 mbuf_freem(nd->nd_mrep);
3697 return (error);
3698 }
3699
3700 /*
3701 * NFS byte range lock rpc.
3702 * (Mostly just calls one of the three lower level RPC routines.)
3703 */
3704 APPLESTATIC int
3705 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3706 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3707 {
3708 struct nfscllockowner *lp;
3709 struct nfsclclient *clp;
3710 struct nfsfh *nfhp;
3711 struct nfsrv_descript nfsd, *nd = &nfsd;
3712 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3713 u_int64_t off, len;
3714 off_t start, end;
3715 u_int32_t clidrev = 0;
3716 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3717 int callcnt, dorpc;
3718
3719 /*
3720 * Convert the flock structure into a start and end and do POSIX
3721 * bounds checking.
3722 */
3723 switch (fl->l_whence) {
3724 case SEEK_SET:
3725 case SEEK_CUR:
3726 /*
3727 * Caller is responsible for adding any necessary offset
3728 * when SEEK_CUR is used.
3729 */
3730 start = fl->l_start;
3731 off = fl->l_start;
3732 break;
3733 case SEEK_END:
3734 start = size + fl->l_start;
3735 off = size + fl->l_start;
3736 break;
3737 default:
3738 return (EINVAL);
3739 }
3740 if (start < 0)
3741 return (EINVAL);
3742 if (fl->l_len != 0) {
3743 end = start + fl->l_len - 1;
3744 if (end < start)
3745 return (EINVAL);
3746 }
3747
3748 len = fl->l_len;
3749 if (len == 0)
3750 len = NFS64BITSSET;
3751 retrycnt = 0;
3752 do {
3753 nd->nd_repstat = 0;
3754 if (op == F_GETLK) {
3755 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3756 if (error)
3757 return (error);
3758 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
3759 if (!error) {
3760 clidrev = clp->nfsc_clientidrev;
3761 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3762 p, id, flags);
3763 } else if (error == -1) {
3764 error = 0;
3765 }
3766 nfscl_clientrelease(clp);
3767 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3768 /*
3769 * We must loop around for all lockowner cases.
3770 */
3771 callcnt = 0;
3772 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3773 if (error)
3774 return (error);
3775 do {
3776 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3777 clp, id, flags, &lp, &dorpc);
3778 /*
3779 * If it returns a NULL lp, we're done.
3780 */
3781 if (lp == NULL) {
3782 if (callcnt == 0)
3783 nfscl_clientrelease(clp);
3784 else
3785 nfscl_releasealllocks(clp, vp, p, id, flags);
3786 return (error);
3787 }
3788 if (nmp->nm_clp != NULL)
3789 clidrev = nmp->nm_clp->nfsc_clientidrev;
3790 else
3791 clidrev = 0;
3792 /*
3793 * If the server doesn't support Posix lock semantics,
3794 * only allow locks on the entire file, since it won't
3795 * handle overlapping byte ranges.
3796 * There might still be a problem when a lock
3797 * upgrade/downgrade (read<->write) occurs, since the
3798 * server "might" expect an unlock first?
3799 */
3800 if (dorpc && (lp->nfsl_open->nfso_posixlock ||
3801 (off == 0 && len == NFS64BITSSET))) {
3802 /*
3803 * Since the lock records will go away, we must
3804 * wait for grace and delay here.
3805 */
3806 do {
3807 error = nfsrpc_locku(nd, nmp, lp, off, len,
3808 NFSV4LOCKT_READ, cred, p, 0);
3809 if ((nd->nd_repstat == NFSERR_GRACE ||
3810 nd->nd_repstat == NFSERR_DELAY) &&
3811 error == 0)
3812 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
3813 "nfs_advlock");
3814 } while ((nd->nd_repstat == NFSERR_GRACE ||
3815 nd->nd_repstat == NFSERR_DELAY) && error == 0);
3816 }
3817 callcnt++;
3818 } while (error == 0 && nd->nd_repstat == 0);
3819 nfscl_releasealllocks(clp, vp, p, id, flags);
3820 } else if (op == F_SETLK) {
3821 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
3822 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
3823 if (error || donelocally) {
3824 return (error);
3825 }
3826 if (nmp->nm_clp != NULL)
3827 clidrev = nmp->nm_clp->nfsc_clientidrev;
3828 else
3829 clidrev = 0;
3830 nfhp = VTONFS(vp)->n_fhp;
3831 if (!lp->nfsl_open->nfso_posixlock &&
3832 (off != 0 || len != NFS64BITSSET)) {
3833 error = EINVAL;
3834 } else {
3835 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
3836 nfhp->nfh_len, lp, newone, reclaim, off,
3837 len, fl->l_type, cred, p, 0);
3838 }
3839 if (!error)
3840 error = nd->nd_repstat;
3841 nfscl_lockrelease(lp, error, newone);
3842 } else {
3843 error = EINVAL;
3844 }
3845 if (!error)
3846 error = nd->nd_repstat;
3847 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
3848 error == NFSERR_STALEDONTRECOVER ||
3849 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3850 error == NFSERR_BADSESSION) {
3851 (void) nfs_catnap(PZERO, error, "nfs_advlock");
3852 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
3853 && clidrev != 0) {
3854 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
3855 retrycnt++;
3856 }
3857 } while (error == NFSERR_GRACE ||
3858 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3859 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
3860 error == NFSERR_BADSESSION ||
3861 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
3862 expireret == 0 && clidrev != 0 && retrycnt < 4));
3863 if (error && retrycnt >= 4)
3864 error = EIO;
3865 return (error);
3866 }
3867
3868 /*
3869 * The lower level routine for the LockT case.
3870 */
3871 APPLESTATIC int
3872 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
3873 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
3874 struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3875 {
3876 u_int32_t *tl;
3877 int error, type, size;
3878 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3879 struct nfsnode *np;
3880 struct nfsmount *nmp;
3881 struct nfsclsession *tsep;
3882
3883 nmp = VFSTONFS(vp->v_mount);
3884 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
3885 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3886 if (fl->l_type == F_RDLCK)
3887 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3888 else
3889 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3890 txdr_hyper(off, tl);
3891 tl += 2;
3892 txdr_hyper(len, tl);
3893 tl += 2;
3894 tsep = nfsmnt_mdssession(nmp);
3895 *tl++ = tsep->nfsess_clientid.lval[0];
3896 *tl = tsep->nfsess_clientid.lval[1];
3897 nfscl_filllockowner(id, own, flags);
3898 np = VTONFS(vp);
3899 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
3900 np->n_fhp->nfh_len);
3901 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
3902 error = nfscl_request(nd, vp, p, cred, NULL);
3903 if (error)
3904 return (error);
3905 if (nd->nd_repstat == 0) {
3906 fl->l_type = F_UNLCK;
3907 } else if (nd->nd_repstat == NFSERR_DENIED) {
3908 nd->nd_repstat = 0;
3909 fl->l_whence = SEEK_SET;
3910 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3911 fl->l_start = fxdr_hyper(tl);
3912 tl += 2;
3913 len = fxdr_hyper(tl);
3914 tl += 2;
3915 if (len == NFS64BITSSET)
3916 fl->l_len = 0;
3917 else
3918 fl->l_len = len;
3919 type = fxdr_unsigned(int, *tl++);
3920 if (type == NFSV4LOCKT_WRITE)
3921 fl->l_type = F_WRLCK;
3922 else
3923 fl->l_type = F_RDLCK;
3924 /*
3925 * XXX For now, I have no idea what to do with the
3926 * conflicting lock_owner, so I'll just set the pid == 0
3927 * and skip over the lock_owner.
3928 */
3929 fl->l_pid = (pid_t)0;
3930 tl += 2;
3931 size = fxdr_unsigned(int, *tl);
3932 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3933 error = EBADRPC;
3934 if (!error)
3935 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3936 } else if (nd->nd_repstat == NFSERR_STALECLIENTID)
3937 nfscl_initiate_recovery(clp);
3938 nfsmout:
3939 mbuf_freem(nd->nd_mrep);
3940 return (error);
3941 }
3942
3943 /*
3944 * Lower level function that performs the LockU RPC.
3945 */
3946 static int
3947 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
3948 struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
3949 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
3950 {
3951 u_int32_t *tl;
3952 int error;
3953
3954 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
3955 lp->nfsl_open->nfso_fhlen, NULL, NULL);
3956 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
3957 *tl++ = txdr_unsigned(type);
3958 *tl = txdr_unsigned(lp->nfsl_seqid);
3959 if (nfstest_outofseq &&
3960 (arc4random() % nfstest_outofseq) == 0)
3961 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3962 tl++;
3963 if (NFSHASNFSV4N(nmp))
3964 *tl++ = 0;
3965 else
3966 *tl++ = lp->nfsl_stateid.seqid;
3967 *tl++ = lp->nfsl_stateid.other[0];
3968 *tl++ = lp->nfsl_stateid.other[1];
3969 *tl++ = lp->nfsl_stateid.other[2];
3970 txdr_hyper(off, tl);
3971 tl += 2;
3972 txdr_hyper(len, tl);
3973 if (syscred)
3974 nd->nd_flag |= ND_USEGSSNAME;
3975 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
3976 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
3977 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3978 if (error)
3979 return (error);
3980 if (nd->nd_repstat == 0) {
3981 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3982 lp->nfsl_stateid.seqid = *tl++;
3983 lp->nfsl_stateid.other[0] = *tl++;
3984 lp->nfsl_stateid.other[1] = *tl++;
3985 lp->nfsl_stateid.other[2] = *tl;
3986 } else if (nd->nd_repstat == NFSERR_STALESTATEID)
3987 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3988 nfsmout:
3989 mbuf_freem(nd->nd_mrep);
3990 return (error);
3991 }
3992
3993 /*
3994 * The actual Lock RPC.
3995 */
3996 APPLESTATIC int
3997 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
3998 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
3999 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
4000 NFSPROC_T *p, int syscred)
4001 {
4002 u_int32_t *tl;
4003 int error, size;
4004 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4005 struct nfsclsession *tsep;
4006
4007 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL);
4008 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
4009 if (type == F_RDLCK)
4010 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
4011 else
4012 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
4013 *tl++ = txdr_unsigned(reclaim);
4014 txdr_hyper(off, tl);
4015 tl += 2;
4016 txdr_hyper(len, tl);
4017 tl += 2;
4018 if (newone) {
4019 *tl = newnfs_true;
4020 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
4021 2 * NFSX_UNSIGNED + NFSX_HYPER);
4022 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
4023 if (NFSHASNFSV4N(nmp))
4024 *tl++ = 0;
4025 else
4026 *tl++ = lp->nfsl_open->nfso_stateid.seqid;
4027 *tl++ = lp->nfsl_open->nfso_stateid.other[0];
4028 *tl++ = lp->nfsl_open->nfso_stateid.other[1];
4029 *tl++ = lp->nfsl_open->nfso_stateid.other[2];
4030 *tl++ = txdr_unsigned(lp->nfsl_seqid);
4031 tsep = nfsmnt_mdssession(nmp);
4032 *tl++ = tsep->nfsess_clientid.lval[0];
4033 *tl = tsep->nfsess_clientid.lval[1];
4034 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4035 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4036 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4037 } else {
4038 *tl = newnfs_false;
4039 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
4040 if (NFSHASNFSV4N(nmp))
4041 *tl++ = 0;
4042 else
4043 *tl++ = lp->nfsl_stateid.seqid;
4044 *tl++ = lp->nfsl_stateid.other[0];
4045 *tl++ = lp->nfsl_stateid.other[1];
4046 *tl++ = lp->nfsl_stateid.other[2];
4047 *tl = txdr_unsigned(lp->nfsl_seqid);
4048 if (nfstest_outofseq &&
4049 (arc4random() % nfstest_outofseq) == 0)
4050 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
4051 }
4052 if (syscred)
4053 nd->nd_flag |= ND_USEGSSNAME;
4054 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
4055 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4056 if (error)
4057 return (error);
4058 if (newone)
4059 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
4060 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
4061 if (nd->nd_repstat == 0) {
4062 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
4063 lp->nfsl_stateid.seqid = *tl++;
4064 lp->nfsl_stateid.other[0] = *tl++;
4065 lp->nfsl_stateid.other[1] = *tl++;
4066 lp->nfsl_stateid.other[2] = *tl;
4067 } else if (nd->nd_repstat == NFSERR_DENIED) {
4068 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
4069 size = fxdr_unsigned(int, *(tl + 7));
4070 if (size < 0 || size > NFSV4_OPAQUELIMIT)
4071 error = EBADRPC;
4072 if (!error)
4073 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
4074 } else if (nd->nd_repstat == NFSERR_STALESTATEID)
4075 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
4076 nfsmout:
4077 mbuf_freem(nd->nd_mrep);
4078 return (error);
4079 }
4080
4081 /*
4082 * nfs statfs rpc
4083 * (always called with the vp for the mount point)
4084 */
4085 APPLESTATIC int
4086 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
4087 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4088 void *stuff)
4089 {
4090 u_int32_t *tl = NULL;
4091 struct nfsrv_descript nfsd, *nd = &nfsd;
4092 struct nfsmount *nmp;
4093 nfsattrbit_t attrbits;
4094 int error;
4095
4096 *attrflagp = 0;
4097 nmp = VFSTONFS(vnode_mount(vp));
4098 if (NFSHASNFSV4(nmp)) {
4099 /*
4100 * For V4, you actually do a getattr.
4101 */
4102 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4103 NFSSTATFS_GETATTRBIT(&attrbits);
4104 (void) nfsrv_putattrbit(nd, &attrbits);
4105 nd->nd_flag |= ND_USEGSSNAME;
4106 error = nfscl_request(nd, vp, p, cred, stuff);
4107 if (error)
4108 return (error);
4109 if (nd->nd_repstat == 0) {
4110 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4111 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
4112 cred);
4113 if (!error) {
4114 nmp->nm_fsid[0] = nap->na_filesid[0];
4115 nmp->nm_fsid[1] = nap->na_filesid[1];
4116 NFSSETHASSETFSID(nmp);
4117 *attrflagp = 1;
4118 }
4119 } else {
4120 error = nd->nd_repstat;
4121 }
4122 if (error)
4123 goto nfsmout;
4124 } else {
4125 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
4126 error = nfscl_request(nd, vp, p, cred, stuff);
4127 if (error)
4128 return (error);
4129 if (nd->nd_flag & ND_NFSV3) {
4130 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4131 if (error)
4132 goto nfsmout;
4133 }
4134 if (nd->nd_repstat) {
4135 error = nd->nd_repstat;
4136 goto nfsmout;
4137 }
4138 NFSM_DISSECT(tl, u_int32_t *,
4139 NFSX_STATFS(nd->nd_flag & ND_NFSV3));
4140 }
4141 if (NFSHASNFSV3(nmp)) {
4142 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
4143 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
4144 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
4145 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
4146 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
4147 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
4148 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
4149 } else if (NFSHASNFSV4(nmp) == 0) {
4150 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
4151 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
4152 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
4153 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
4154 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
4155 }
4156 nfsmout:
4157 mbuf_freem(nd->nd_mrep);
4158 return (error);
4159 }
4160
4161 /*
4162 * nfs pathconf rpc
4163 */
4164 APPLESTATIC int
4165 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
4166 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4167 void *stuff)
4168 {
4169 struct nfsrv_descript nfsd, *nd = &nfsd;
4170 struct nfsmount *nmp;
4171 u_int32_t *tl;
4172 nfsattrbit_t attrbits;
4173 int error;
4174
4175 *attrflagp = 0;
4176 nmp = VFSTONFS(vnode_mount(vp));
4177 if (NFSHASNFSV4(nmp)) {
4178 /*
4179 * For V4, you actually do a getattr.
4180 */
4181 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4182 NFSPATHCONF_GETATTRBIT(&attrbits);
4183 (void) nfsrv_putattrbit(nd, &attrbits);
4184 nd->nd_flag |= ND_USEGSSNAME;
4185 error = nfscl_request(nd, vp, p, cred, stuff);
4186 if (error)
4187 return (error);
4188 if (nd->nd_repstat == 0) {
4189 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4190 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
4191 cred);
4192 if (!error)
4193 *attrflagp = 1;
4194 } else {
4195 error = nd->nd_repstat;
4196 }
4197 } else {
4198 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
4199 error = nfscl_request(nd, vp, p, cred, stuff);
4200 if (error)
4201 return (error);
4202 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4203 if (nd->nd_repstat && !error)
4204 error = nd->nd_repstat;
4205 if (!error) {
4206 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
4207 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
4208 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
4209 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
4210 pc->pc_chownrestricted =
4211 fxdr_unsigned(u_int32_t, *tl++);
4212 pc->pc_caseinsensitive =
4213 fxdr_unsigned(u_int32_t, *tl++);
4214 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
4215 }
4216 }
4217 nfsmout:
4218 mbuf_freem(nd->nd_mrep);
4219 return (error);
4220 }
4221
4222 /*
4223 * nfs version 3 fsinfo rpc call
4224 */
4225 APPLESTATIC int
4226 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
4227 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
4228 {
4229 u_int32_t *tl;
4230 struct nfsrv_descript nfsd, *nd = &nfsd;
4231 int error;
4232
4233 *attrflagp = 0;
4234 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
4235 error = nfscl_request(nd, vp, p, cred, stuff);
4236 if (error)
4237 return (error);
4238 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4239 if (nd->nd_repstat && !error)
4240 error = nd->nd_repstat;
4241 if (!error) {
4242 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
4243 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
4244 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
4245 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
4246 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
4247 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
4248 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
4249 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
4250 fsp->fs_maxfilesize = fxdr_hyper(tl);
4251 tl += 2;
4252 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
4253 tl += 2;
4254 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
4255 }
4256 nfsmout:
4257 mbuf_freem(nd->nd_mrep);
4258 return (error);
4259 }
4260
4261 /*
4262 * This function performs the Renew RPC.
4263 */
4264 APPLESTATIC int
4265 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred,
4266 NFSPROC_T *p)
4267 {
4268 u_int32_t *tl;
4269 struct nfsrv_descript nfsd;
4270 struct nfsrv_descript *nd = &nfsd;
4271 struct nfsmount *nmp;
4272 int error;
4273 struct nfssockreq *nrp;
4274 struct nfsclsession *tsep;
4275
4276 nmp = clp->nfsc_nmp;
4277 if (nmp == NULL)
4278 return (0);
4279 if (dsp == NULL)
4280 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL);
4281 else
4282 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
4283 &dsp->nfsclds_sess);
4284 if (!NFSHASNFSV4N(nmp)) {
4285 /* NFSv4.1 just uses a Sequence Op and not a Renew. */
4286 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4287 tsep = nfsmnt_mdssession(nmp);
4288 *tl++ = tsep->nfsess_clientid.lval[0];
4289 *tl = tsep->nfsess_clientid.lval[1];
4290 }
4291 nrp = NULL;
4292 if (dsp != NULL)
4293 nrp = dsp->nfsclds_sockp;
4294 if (nrp == NULL)
4295 /* If NULL, use the MDS socket. */
4296 nrp = &nmp->nm_sockreq;
4297 nd->nd_flag |= ND_USEGSSNAME;
4298 if (dsp == NULL)
4299 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4300 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4301 else
4302 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4303 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
4304 if (error)
4305 return (error);
4306 error = nd->nd_repstat;
4307 mbuf_freem(nd->nd_mrep);
4308 return (error);
4309 }
4310
4311 /*
4312 * This function performs the Releaselockowner RPC.
4313 */
4314 APPLESTATIC int
4315 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
4316 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
4317 {
4318 struct nfsrv_descript nfsd, *nd = &nfsd;
4319 u_int32_t *tl;
4320 int error;
4321 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4322 struct nfsclsession *tsep;
4323
4324 if (NFSHASNFSV4N(nmp)) {
4325 /* For NFSv4.1, do a FreeStateID. */
4326 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
4327 NULL);
4328 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
4329 } else {
4330 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
4331 NULL);
4332 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4333 tsep = nfsmnt_mdssession(nmp);
4334 *tl++ = tsep->nfsess_clientid.lval[0];
4335 *tl = tsep->nfsess_clientid.lval[1];
4336 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4337 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4338 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4339 }
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 error = nd->nd_repstat;
4346 mbuf_freem(nd->nd_mrep);
4347 return (error);
4348 }
4349
4350 /*
4351 * This function performs the Compound to get the mount pt FH.
4352 */
4353 APPLESTATIC int
4354 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4355 NFSPROC_T *p)
4356 {
4357 u_int32_t *tl;
4358 struct nfsrv_descript nfsd;
4359 struct nfsrv_descript *nd = &nfsd;
4360 u_char *cp, *cp2;
4361 int error, cnt, len, setnil;
4362 u_int32_t *opcntp;
4363
4364 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL);
4365 cp = dirpath;
4366 cnt = 0;
4367 do {
4368 setnil = 0;
4369 while (*cp == '/')
4370 cp++;
4371 cp2 = cp;
4372 while (*cp2 != '\0' && *cp2 != '/')
4373 cp2++;
4374 if (*cp2 == '/') {
4375 setnil = 1;
4376 *cp2 = '\0';
4377 }
4378 if (cp2 != cp) {
4379 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4380 *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4381 nfsm_strtom(nd, cp, strlen(cp));
4382 cnt++;
4383 }
4384 if (setnil)
4385 *cp2++ = '/';
4386 cp = cp2;
4387 } while (*cp != '\0');
4388 if (NFSHASNFSV4N(nmp))
4389 /* Has a Sequence Op done by nfscl_reqstart(). */
4390 *opcntp = txdr_unsigned(3 + cnt);
4391 else
4392 *opcntp = txdr_unsigned(2 + cnt);
4393 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4394 *tl = txdr_unsigned(NFSV4OP_GETFH);
4395 nd->nd_flag |= ND_USEGSSNAME;
4396 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4397 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4398 if (error)
4399 return (error);
4400 if (nd->nd_repstat == 0) {
4401 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4402 tl += (2 + 2 * cnt);
4403 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4404 len > NFSX_FHMAX) {
4405 nd->nd_repstat = NFSERR_BADXDR;
4406 } else {
4407 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4408 if (nd->nd_repstat == 0)
4409 nmp->nm_fhsize = len;
4410 }
4411 }
4412 error = nd->nd_repstat;
4413 nfsmout:
4414 mbuf_freem(nd->nd_mrep);
4415 return (error);
4416 }
4417
4418 /*
4419 * This function performs the Delegreturn RPC.
4420 */
4421 APPLESTATIC int
4422 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4423 struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4424 {
4425 u_int32_t *tl;
4426 struct nfsrv_descript nfsd;
4427 struct nfsrv_descript *nd = &nfsd;
4428 int error;
4429
4430 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4431 dp->nfsdl_fhlen, NULL, NULL);
4432 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4433 if (NFSHASNFSV4N(nmp))
4434 *tl++ = 0;
4435 else
4436 *tl++ = dp->nfsdl_stateid.seqid;
4437 *tl++ = dp->nfsdl_stateid.other[0];
4438 *tl++ = dp->nfsdl_stateid.other[1];
4439 *tl = dp->nfsdl_stateid.other[2];
4440 if (syscred)
4441 nd->nd_flag |= ND_USEGSSNAME;
4442 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4443 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4444 if (error)
4445 return (error);
4446 error = nd->nd_repstat;
4447 mbuf_freem(nd->nd_mrep);
4448 return (error);
4449 }
4450
4451 /*
4452 * nfs getacl call.
4453 */
4454 APPLESTATIC int
4455 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4456 struct acl *aclp, void *stuff)
4457 {
4458 struct nfsrv_descript nfsd, *nd = &nfsd;
4459 int error;
4460 nfsattrbit_t attrbits;
4461 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4462
4463 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4464 return (EOPNOTSUPP);
4465 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4466 NFSZERO_ATTRBIT(&attrbits);
4467 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4468 (void) nfsrv_putattrbit(nd, &attrbits);
4469 error = nfscl_request(nd, vp, p, cred, stuff);
4470 if (error)
4471 return (error);
4472 if (!nd->nd_repstat)
4473 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4474 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4475 else
4476 error = nd->nd_repstat;
4477 mbuf_freem(nd->nd_mrep);
4478 return (error);
4479 }
4480
4481 /*
4482 * nfs setacl call.
4483 */
4484 APPLESTATIC int
4485 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4486 struct acl *aclp, void *stuff)
4487 {
4488 int error;
4489 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4490
4491 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4492 return (EOPNOTSUPP);
4493 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4494 return (error);
4495 }
4496
4497 /*
4498 * nfs setacl call.
4499 */
4500 static int
4501 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4502 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4503 {
4504 struct nfsrv_descript nfsd, *nd = &nfsd;
4505 int error;
4506 nfsattrbit_t attrbits;
4507 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4508
4509 if (!NFSHASNFSV4(nmp))
4510 return (EOPNOTSUPP);
4511 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4512 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4513 NFSZERO_ATTRBIT(&attrbits);
4514 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4515 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
4516 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0);
4517 error = nfscl_request(nd, vp, p, cred, stuff);
4518 if (error)
4519 return (error);
4520 /* Don't care about the pre/postop attributes */
4521 mbuf_freem(nd->nd_mrep);
4522 return (nd->nd_repstat);
4523 }
4524
4525 /*
4526 * Do the NFSv4.1 Exchange ID.
4527 */
4528 int
4529 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp,
4530 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp,
4531 struct ucred *cred, NFSPROC_T *p)
4532 {
4533 uint32_t *tl, v41flags;
4534 struct nfsrv_descript nfsd;
4535 struct nfsrv_descript *nd = &nfsd;
4536 struct nfsclds *dsp;
4537 struct timespec verstime;
4538 int error, len;
4539
4540 *dspp = NULL;
4541 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL);
4542 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4543 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */
4544 *tl = txdr_unsigned(clp->nfsc_rev);
4545 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
4546
4547 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4548 *tl++ = txdr_unsigned(exchflags);
4549 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE);
4550
4551 /* Set the implementation id4 */
4552 *tl = txdr_unsigned(1);
4553 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org"));
4554 (void) nfsm_strtom(nd, version, strlen(version));
4555 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME);
4556 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */
4557 verstime.tv_nsec = 0;
4558 txdr_nfsv4time(&verstime, tl);
4559 nd->nd_flag |= ND_USEGSSNAME;
4560 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4561 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4562 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error,
4563 (int)nd->nd_repstat);
4564 if (error != 0)
4565 return (error);
4566 if (nd->nd_repstat == 0) {
4567 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER);
4568 len = fxdr_unsigned(int, *(tl + 7));
4569 if (len < 0 || len > NFSV4_OPAQUELIMIT) {
4570 error = NFSERR_BADXDR;
4571 goto nfsmout;
4572 }
4573 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS,
4574 M_WAITOK | M_ZERO);
4575 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
4576 dsp->nfsclds_servownlen = len;
4577 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++;
4578 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++;
4579 dsp->nfsclds_sess.nfsess_sequenceid =
4580 fxdr_unsigned(uint32_t, *tl++);
4581 v41flags = fxdr_unsigned(uint32_t, *tl);
4582 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 &&
4583 NFSHASPNFSOPT(nmp)) {
4584 NFSCL_DEBUG(1, "set PNFS\n");
4585 NFSLOCKMNT(nmp);
4586 nmp->nm_state |= NFSSTA_PNFS;
4587 NFSUNLOCKMNT(nmp);
4588 dsp->nfsclds_flags |= NFSCLDS_MDS;
4589 }
4590 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0)
4591 dsp->nfsclds_flags |= NFSCLDS_DS;
4592 if (len > 0)
4593 nd->nd_repstat = nfsrv_mtostr(nd,
4594 dsp->nfsclds_serverown, len);
4595 if (nd->nd_repstat == 0) {
4596 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
4597 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
4598 NULL, MTX_DEF);
4599 nfscl_initsessionslots(&dsp->nfsclds_sess);
4600 *dspp = dsp;
4601 } else
4602 free(dsp, M_NFSCLDS);
4603 }
4604 error = nd->nd_repstat;
4605 nfsmout:
4606 mbuf_freem(nd->nd_mrep);
4607 return (error);
4608 }
4609
4610 /*
4611 * Do the NFSv4.1 Create Session.
4612 */
4613 int
4614 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
4615 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred,
4616 NFSPROC_T *p)
4617 {
4618 uint32_t crflags, *tl;
4619 struct nfsrv_descript nfsd;
4620 struct nfsrv_descript *nd = &nfsd;
4621 int error, irdcnt;
4622
4623 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL);
4624 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
4625 *tl++ = sep->nfsess_clientid.lval[0];
4626 *tl++ = sep->nfsess_clientid.lval[1];
4627 *tl++ = txdr_unsigned(sequenceid);
4628 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST);
4629 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0)
4630 crflags |= NFSV4CRSESS_CONNBACKCHAN;
4631 *tl = txdr_unsigned(crflags);
4632
4633 /* Fill in fore channel attributes. */
4634 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4635 *tl++ = 0; /* Header pad size */
4636 *tl++ = txdr_unsigned(100000); /* Max request size */
4637 *tl++ = txdr_unsigned(100000); /* Max response size */
4638 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4639 *tl++ = txdr_unsigned(20); /* Max operations */
4640 *tl++ = txdr_unsigned(64); /* Max slots */
4641 *tl = 0; /* No rdma ird */
4642
4643 /* Fill in back channel attributes. */
4644 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4645 *tl++ = 0; /* Header pad size */
4646 *tl++ = txdr_unsigned(10000); /* Max request size */
4647 *tl++ = txdr_unsigned(10000); /* Max response size */
4648 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4649 *tl++ = txdr_unsigned(4); /* Max operations */
4650 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */
4651 *tl = 0; /* No rdma ird */
4652
4653 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED);
4654 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */
4655
4656 /* Allow AUTH_SYS callbacks as uid, gid == 0. */
4657 *tl++ = txdr_unsigned(1); /* Auth_sys only */
4658 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */
4659 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */
4660 *tl++ = 0; /* Null machine name */
4661 *tl++ = 0; /* Uid == 0 */
4662 *tl++ = 0; /* Gid == 0 */
4663 *tl = 0; /* No additional gids */
4664 nd->nd_flag |= ND_USEGSSNAME;
4665 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG,
4666 NFS_VER4, NULL, 1, NULL, NULL);
4667 if (error != 0)
4668 return (error);
4669 if (nd->nd_repstat == 0) {
4670 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
4671 2 * NFSX_UNSIGNED);
4672 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID);
4673 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
4674 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++);
4675 crflags = fxdr_unsigned(uint32_t, *tl);
4676 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) {
4677 NFSLOCKMNT(nmp);
4678 nmp->nm_state |= NFSSTA_SESSPERSIST;
4679 NFSUNLOCKMNT(nmp);
4680 }
4681
4682 /* Get the fore channel slot count. */
4683 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4684 tl += 3; /* Skip the other counts. */
4685 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++);
4686 tl++;
4687 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++);
4688 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots);
4689 irdcnt = fxdr_unsigned(int, *tl);
4690 if (irdcnt > 0)
4691 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED);
4692
4693 /* and the back channel slot count. */
4694 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4695 tl += 5;
4696 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl);
4697 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots);
4698 }
4699 error = nd->nd_repstat;
4700 nfsmout:
4701 mbuf_freem(nd->nd_mrep);
4702 return (error);
4703 }
4704
4705 /*
4706 * Do the NFSv4.1 Destroy Session.
4707 */
4708 int
4709 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp,
4710 struct ucred *cred, NFSPROC_T *p)
4711 {
4712 uint32_t *tl;
4713 struct nfsrv_descript nfsd;
4714 struct nfsrv_descript *nd = &nfsd;
4715 int error;
4716 struct nfsclsession *tsep;
4717
4718 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL);
4719 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID);
4720 tsep = nfsmnt_mdssession(nmp);
4721 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID);
4722 nd->nd_flag |= ND_USEGSSNAME;
4723 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4724 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4725 if (error != 0)
4726 return (error);
4727 error = nd->nd_repstat;
4728 mbuf_freem(nd->nd_mrep);
4729 return (error);
4730 }
4731
4732 /*
4733 * Do the NFSv4.1 Destroy Client.
4734 */
4735 int
4736 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp,
4737 struct ucred *cred, NFSPROC_T *p)
4738 {
4739 uint32_t *tl;
4740 struct nfsrv_descript nfsd;
4741 struct nfsrv_descript *nd = &nfsd;
4742 int error;
4743 struct nfsclsession *tsep;
4744
4745 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL);
4746 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4747 tsep = nfsmnt_mdssession(nmp);
4748 *tl++ = tsep->nfsess_clientid.lval[0];
4749 *tl = tsep->nfsess_clientid.lval[1];
4750 nd->nd_flag |= ND_USEGSSNAME;
4751 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4752 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4753 if (error != 0)
4754 return (error);
4755 error = nd->nd_repstat;
4756 mbuf_freem(nd->nd_mrep);
4757 return (error);
4758 }
4759
4760 /*
4761 * Do the NFSv4.1 LayoutGet.
4762 */
4763 int
4764 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
4765 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen,
4766 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp,
4767 struct ucred *cred, NFSPROC_T *p, void *stuff)
4768 {
4769 uint32_t *tl;
4770 struct nfsrv_descript nfsd, *nd = &nfsd;
4771 struct nfsfh *nfhp;
4772 struct nfsclflayout *flp, *prevflp, *tflp;
4773 int cnt, error, gotiomode, fhcnt, nfhlen, i, j;
4774 uint8_t *cp;
4775 uint64_t retlen;
4776
4777 flp = NULL;
4778 gotiomode = -1;
4779 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL);
4780 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
4781 NFSX_STATEID);
4782 *tl++ = newnfs_false; /* Don't signal availability. */
4783 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES);
4784 *tl++ = txdr_unsigned(iomode);
4785 txdr_hyper(offset, tl);
4786 tl += 2;
4787 txdr_hyper(len, tl);
4788 tl += 2;
4789 txdr_hyper(minlen, tl);
4790 tl += 2;
4791 *tl++ = txdr_unsigned(stateidp->seqid);
4792 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid);
4793 *tl++ = stateidp->other[0];
4794 *tl++ = stateidp->other[1];
4795 *tl++ = stateidp->other[2];
4796 *tl = txdr_unsigned(layoutlen);
4797 nd->nd_flag |= ND_USEGSSNAME;
4798 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4799 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4800 if (error != 0)
4801 return (error);
4802 if (nd->nd_repstat == 0) {
4803 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID);
4804 if (*tl++ != 0)
4805 *retonclosep = 1;
4806 else
4807 *retonclosep = 0;
4808 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
4809 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep,
4810 (int)stateidp->seqid);
4811 stateidp->other[0] = *tl++;
4812 stateidp->other[1] = *tl++;
4813 stateidp->other[2] = *tl++;
4814 cnt = fxdr_unsigned(int, *tl);
4815 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt);
4816 if (cnt <= 0 || cnt > 10000) {
4817 /* Don't accept more than 10000 layouts in reply. */
4818 error = NFSERR_BADXDR;
4819 goto nfsmout;
4820 }
4821 for (i = 0; i < cnt; i++) {
4822 /* Dissect all the way to the file handle cnt. */
4823 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER +
4824 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID);
4825 fhcnt = fxdr_unsigned(int, *(tl + 11 +
4826 NFSX_V4DEVICEID / NFSX_UNSIGNED));
4827 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
4828 if (fhcnt < 0 || fhcnt > 100) {
4829 /* Don't accept more than 100 file handles. */
4830 error = NFSERR_BADXDR;
4831 goto nfsmout;
4832 }
4833 if (fhcnt > 1)
4834 flp = malloc(sizeof(*flp) + (fhcnt - 1) *
4835 sizeof(struct nfsfh *),
4836 M_NFSFLAYOUT, M_WAITOK);
4837 else
4838 flp = malloc(sizeof(*flp),
4839 M_NFSFLAYOUT, M_WAITOK);
4840 flp->nfsfl_flags = 0;
4841 flp->nfsfl_fhcnt = 0;
4842 flp->nfsfl_devp = NULL;
4843 flp->nfsfl_off = fxdr_hyper(tl); tl += 2;
4844 retlen = fxdr_hyper(tl); tl += 2;
4845 if (flp->nfsfl_off + retlen < flp->nfsfl_off)
4846 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
4847 else
4848 flp->nfsfl_end = flp->nfsfl_off + retlen;
4849 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++);
4850 if (gotiomode == -1)
4851 gotiomode = flp->nfsfl_iomode;
4852 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode,
4853 (int)flp->nfsfl_iomode);
4854 if (fxdr_unsigned(int, *tl++) !=
4855 NFSLAYOUT_NFSV4_1_FILES) {
4856 printf("NFSv4.1: got non-files layout\n");
4857 error = NFSERR_BADXDR;
4858 goto nfsmout;
4859 }
4860 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID);
4861 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4862 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++);
4863 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util);
4864 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
4865 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
4866 if (fxdr_unsigned(int, *tl) != fhcnt) {
4867 printf("EEK! bad fhcnt\n");
4868 error = NFSERR_BADXDR;
4869 goto nfsmout;
4870 }
4871 for (j = 0; j < fhcnt; j++) {
4872 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4873 nfhlen = fxdr_unsigned(int, *tl);
4874 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) {
4875 error = NFSERR_BADXDR;
4876 goto nfsmout;
4877 }
4878 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1,
4879 M_NFSFH, M_WAITOK);
4880 flp->nfsfl_fh[j] = nfhp;
4881 flp->nfsfl_fhcnt++;
4882 nfhp->nfh_len = nfhlen;
4883 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen));
4884 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen);
4885 }
4886 if (flp->nfsfl_iomode == gotiomode) {
4887 /* Keep the list in increasing offset order. */
4888 tflp = LIST_FIRST(flhp);
4889 prevflp = NULL;
4890 while (tflp != NULL &&
4891 tflp->nfsfl_off < flp->nfsfl_off) {
4892 prevflp = tflp;
4893 tflp = LIST_NEXT(tflp, nfsfl_list);
4894 }
4895 if (prevflp == NULL)
4896 LIST_INSERT_HEAD(flhp, flp, nfsfl_list);
4897 else
4898 LIST_INSERT_AFTER(prevflp, flp,
4899 nfsfl_list);
4900 } else {
4901 printf("nfscl_layoutget(): got wrong iomode\n");
4902 nfscl_freeflayout(flp);
4903 }
4904 flp = NULL;
4905 }
4906 }
4907 if (nd->nd_repstat != 0 && error == 0)
4908 error = nd->nd_repstat;
4909 nfsmout:
4910 if (error != 0 && flp != NULL)
4911 nfscl_freeflayout(flp);
4912 mbuf_freem(nd->nd_mrep);
4913 return (error);
4914 }
4915
4916 /*
4917 * Do the NFSv4.1 Get Device Info.
4918 */
4919 int
4920 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype,
4921 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred,
4922 NFSPROC_T *p)
4923 {
4924 uint32_t cnt, *tl;
4925 struct nfsrv_descript nfsd;
4926 struct nfsrv_descript *nd = &nfsd;
4927 struct sockaddr_storage ss;
4928 struct nfsclds *dsp = NULL, **dspp;
4929 struct nfscldevinfo *ndi;
4930 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt;
4931 uint8_t stripeindex;
4932
4933 *ndip = NULL;
4934 ndi = NULL;
4935 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL);
4936 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
4937 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID);
4938 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4939 *tl++ = txdr_unsigned(layouttype);
4940 *tl++ = txdr_unsigned(100000);
4941 if (notifybitsp != NULL && *notifybitsp != 0) {
4942 *tl = txdr_unsigned(1); /* One word of bits. */
4943 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
4944 *tl = txdr_unsigned(*notifybitsp);
4945 } else
4946 *tl = txdr_unsigned(0);
4947 nd->nd_flag |= ND_USEGSSNAME;
4948 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4949 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4950 if (error != 0)
4951 return (error);
4952 if (nd->nd_repstat == 0) {
4953 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4954 if (layouttype != fxdr_unsigned(int, *tl++))
4955 printf("EEK! devinfo layout type not same!\n");
4956 stripecnt = fxdr_unsigned(int, *++tl);
4957 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
4958 if (stripecnt < 1 || stripecnt > 4096) {
4959 printf("NFS devinfo stripecnt %d: out of range\n",
4960 stripecnt);
4961 error = NFSERR_BADXDR;
4962 goto nfsmout;
4963 }
4964 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED);
4965 addrcnt = fxdr_unsigned(int, *(tl + stripecnt));
4966 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt);
4967 if (addrcnt < 1 || addrcnt > 128) {
4968 printf("NFS devinfo addrcnt %d: out of range\n",
4969 addrcnt);
4970 error = NFSERR_BADXDR;
4971 goto nfsmout;
4972 }
4973
4974 /*
4975 * Now we know how many stripe indices and addresses, so
4976 * we can allocate the structure the correct size.
4977 */
4978 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *)
4979 + 1;
4980 NFSCL_DEBUG(4, "stripeindices=%d\n", i);
4981 ndi = malloc(sizeof(*ndi) + (addrcnt + i) *
4982 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO);
4983 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID);
4984 ndi->nfsdi_refcnt = 0;
4985 ndi->nfsdi_stripecnt = stripecnt;
4986 ndi->nfsdi_addrcnt = addrcnt;
4987 /* Fill in the stripe indices. */
4988 for (i = 0; i < stripecnt; i++) {
4989 stripeindex = fxdr_unsigned(uint8_t, *tl++);
4990 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex);
4991 if (stripeindex >= addrcnt) {
4992 printf("NFS devinfo stripeindex %d: too big\n",
4993 (int)stripeindex);
4994 error = NFSERR_BADXDR;
4995 goto nfsmout;
4996 }
4997 nfsfldi_setstripeindex(ndi, i, stripeindex);
4998 }
4999
5000 /* Now, dissect the server address(es). */
5001 safilled = 0;
5002 for (i = 0; i < addrcnt; i++) {
5003 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5004 cnt = fxdr_unsigned(uint32_t, *tl);
5005 if (cnt == 0) {
5006 printf("NFS devinfo 0 len addrlist\n");
5007 error = NFSERR_BADXDR;
5008 goto nfsmout;
5009 }
5010 dspp = nfsfldi_addr(ndi, i);
5011 pos = arc4random() % cnt; /* Choose one. */
5012 safilled = 0;
5013 for (j = 0; j < cnt; j++) {
5014 error = nfsv4_getipaddr(nd, &ss, &isudp);
5015 if (error != 0 && error != EPERM) {
5016 error = NFSERR_BADXDR;
5017 goto nfsmout;
5018 }
5019 if (error == 0 && isudp == 0) {
5020 /*
5021 * The algorithm is:
5022 * - use "pos" entry if it is of the
5023 * same af_family or none of them
5024 * is of the same af_family
5025 * else
5026 * - use the first one of the same
5027 * af_family.
5028 */
5029 if ((safilled == 0 && ss.ss_family ==
5030 nmp->nm_nam->sa_family) ||
5031 (j == pos &&
5032 (safilled == 0 || ss.ss_family ==
5033 nmp->nm_nam->sa_family)) ||
5034 (safilled == 1 && ss.ss_family ==
5035 nmp->nm_nam->sa_family)) {
5036 error = nfsrpc_fillsa(nmp, &ss,
5037 &dsp, p);
5038 if (error == 0) {
5039 *dspp = dsp;
5040 if (ss.ss_family ==
5041 nmp->nm_nam->sa_family)
5042 safilled = 2;
5043 else
5044 safilled = 1;
5045 }
5046 }
5047 }
5048 }
5049 if (safilled == 0)
5050 break;
5051 }
5052
5053 /* And the notify bits. */
5054 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5055 if (safilled != 0) {
5056 bitcnt = fxdr_unsigned(int, *tl);
5057 if (bitcnt > 0) {
5058 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5059 if (notifybitsp != NULL)
5060 *notifybitsp =
5061 fxdr_unsigned(uint32_t, *tl);
5062 }
5063 *ndip = ndi;
5064 } else
5065 error = EPERM;
5066 }
5067 if (nd->nd_repstat != 0)
5068 error = nd->nd_repstat;
5069 nfsmout:
5070 if (error != 0 && ndi != NULL)
5071 nfscl_freedevinfo(ndi);
5072 mbuf_freem(nd->nd_mrep);
5073 return (error);
5074 }
5075
5076 /*
5077 * Do the NFSv4.1 LayoutCommit.
5078 */
5079 int
5080 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5081 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp,
5082 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred,
5083 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_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL);
5091 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
5092 NFSX_STATEID);
5093 txdr_hyper(off, tl);
5094 tl += 2;
5095 txdr_hyper(len, tl);
5096 tl += 2;
5097 if (reclaim != 0)
5098 *tl++ = newnfs_true;
5099 else
5100 *tl++ = newnfs_false;
5101 *tl++ = txdr_unsigned(stateidp->seqid);
5102 *tl++ = stateidp->other[0];
5103 *tl++ = stateidp->other[1];
5104 *tl++ = stateidp->other[2];
5105 *tl++ = newnfs_true;
5106 if (lastbyte < off)
5107 lastbyte = off;
5108 else if (lastbyte >= (off + len))
5109 lastbyte = off + len - 1;
5110 txdr_hyper(lastbyte, tl);
5111 tl += 2;
5112 *tl++ = newnfs_false;
5113 *tl++ = txdr_unsigned(layouttype);
5114 *tl = txdr_unsigned(layoutupdatecnt);
5115 if (layoutupdatecnt > 0) {
5116 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES,
5117 ("Must be nil for Files Layout"));
5118 outcnt = NFSM_RNDUP(layoutupdatecnt);
5119 NFSM_BUILD(cp, uint8_t *, outcnt);
5120 NFSBCOPY(layp, cp, layoutupdatecnt);
5121 cp += layoutupdatecnt;
5122 for (i = 0; i < (outcnt - layoutupdatecnt); i++)
5123 *cp++ = 0x0;
5124 }
5125 nd->nd_flag |= ND_USEGSSNAME;
5126 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5127 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5128 if (error != 0)
5129 return (error);
5130 error = nd->nd_repstat;
5131 mbuf_freem(nd->nd_mrep);
5132 return (error);
5133 }
5134
5135 /*
5136 * Do the NFSv4.1 LayoutReturn.
5137 */
5138 int
5139 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5140 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset,
5141 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp,
5142 struct ucred *cred, NFSPROC_T *p, void *stuff)
5143 {
5144 uint32_t *tl;
5145 struct nfsrv_descript nfsd, *nd = &nfsd;
5146 int error, outcnt, i;
5147 uint8_t *cp;
5148
5149 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL);
5150 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
5151 if (reclaim != 0)
5152 *tl++ = newnfs_true;
5153 else
5154 *tl++ = newnfs_false;
5155 *tl++ = txdr_unsigned(layouttype);
5156 *tl++ = txdr_unsigned(iomode);
5157 *tl = txdr_unsigned(layoutreturn);
5158 if (layoutreturn == NFSLAYOUTRETURN_FILE) {
5159 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
5160 NFSX_UNSIGNED);
5161 txdr_hyper(offset, tl);
5162 tl += 2;
5163 txdr_hyper(len, tl);
5164 tl += 2;
5165 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid);
5166 *tl++ = txdr_unsigned(stateidp->seqid);
5167 *tl++ = stateidp->other[0];
5168 *tl++ = stateidp->other[1];
5169 *tl++ = stateidp->other[2];
5170 *tl = txdr_unsigned(layoutcnt);
5171 if (layoutcnt > 0) {
5172 outcnt = NFSM_RNDUP(layoutcnt);
5173 NFSM_BUILD(cp, uint8_t *, outcnt);
5174 NFSBCOPY(layp, cp, layoutcnt);
5175 cp += layoutcnt;
5176 for (i = 0; i < (outcnt - layoutcnt); i++)
5177 *cp++ = 0x0;
5178 }
5179 }
5180 nd->nd_flag |= ND_USEGSSNAME;
5181 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5182 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5183 if (error != 0)
5184 return (error);
5185 if (nd->nd_repstat == 0) {
5186 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5187 if (*tl != 0) {
5188 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
5189 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
5190 stateidp->other[0] = *tl++;
5191 stateidp->other[1] = *tl++;
5192 stateidp->other[2] = *tl;
5193 }
5194 } else
5195 error = nd->nd_repstat;
5196 nfsmout:
5197 mbuf_freem(nd->nd_mrep);
5198 return (error);
5199 }
5200
5201 /*
5202 * Acquire a layout and devinfo, if possible. The caller must have acquired
5203 * a reference count on the nfsclclient structure before calling this.
5204 * Return the layout in lypp with a reference count on it, if successful.
5205 */
5206 static int
5207 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp,
5208 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off,
5209 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
5210 {
5211 struct nfscllayout *lyp;
5212 struct nfsclflayout *flp, *tflp;
5213 struct nfscldevinfo *dip;
5214 struct nfsclflayouthead flh;
5215 int error = 0, islocked, layoutlen, recalled, retonclose;
5216 nfsv4stateid_t stateid;
5217 struct nfsclsession *tsep;
5218
5219 *lypp = NULL;
5220 /*
5221 * If lyp is returned non-NULL, there will be a refcnt (shared lock)
5222 * on it, iff flp != NULL or a lock (exclusive lock) on it iff
5223 * flp == NULL.
5224 */
5225 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len,
5226 off, &flp, &recalled);
5227 islocked = 0;
5228 if (lyp == NULL || flp == NULL) {
5229 if (recalled != 0)
5230 return (EIO);
5231 LIST_INIT(&flh);
5232 tsep = nfsmnt_mdssession(nmp);
5233 layoutlen = tsep->nfsess_maxcache -
5234 (NFSX_STATEID + 3 * NFSX_UNSIGNED);
5235 if (lyp == NULL) {
5236 stateid.seqid = 0;
5237 stateid.other[0] = stateidp->other[0];
5238 stateid.other[1] = stateidp->other[1];
5239 stateid.other[2] = stateidp->other[2];
5240 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5241 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX,
5242 (uint64_t)0, layoutlen, &stateid, &retonclose,
5243 &flh, cred, p, NULL);
5244 } else {
5245 islocked = 1;
5246 stateid.seqid = lyp->nfsly_stateid.seqid;
5247 stateid.other[0] = lyp->nfsly_stateid.other[0];
5248 stateid.other[1] = lyp->nfsly_stateid.other[1];
5249 stateid.other[2] = lyp->nfsly_stateid.other[2];
5250 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5251 nfhp->nfh_len, iomode, off, UINT64_MAX,
5252 (uint64_t)0, layoutlen, &stateid, &retonclose,
5253 &flh, cred, p, NULL);
5254 }
5255 if (error == 0)
5256 LIST_FOREACH(tflp, &flh, nfsfl_list) {
5257 error = nfscl_adddevinfo(nmp, NULL, tflp);
5258 if (error != 0) {
5259 error = nfsrpc_getdeviceinfo(nmp,
5260 tflp->nfsfl_dev,
5261 NFSLAYOUT_NFSV4_1_FILES,
5262 notifybitsp, &dip, cred, p);
5263 if (error != 0)
5264 break;
5265 error = nfscl_adddevinfo(nmp, dip,
5266 tflp);
5267 if (error != 0)
5268 printf(
5269 "getlayout: cannot add\n");
5270 }
5271 }
5272 if (error == 0) {
5273 /*
5274 * nfscl_layout() always returns with the nfsly_lock
5275 * set to a refcnt (shared lock).
5276 */
5277 error = nfscl_layout(nmp, vp, nfhp->nfh_fh,
5278 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp,
5279 cred, p);
5280 if (error == 0)
5281 *lypp = lyp;
5282 } else if (islocked != 0)
5283 nfsv4_unlock(&lyp->nfsly_lock, 0);
5284 } else
5285 *lypp = lyp;
5286 return (error);
5287 }
5288
5289 /*
5290 * Do a TCP connection plus exchange id and create session.
5291 * If successful, a "struct nfsclds" is linked into the list for the
5292 * mount point and a pointer to it is returned.
5293 */
5294 static int
5295 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp,
5296 struct nfsclds **dspp, NFSPROC_T *p)
5297 {
5298 struct sockaddr_in *msad, *sad, *ssd;
5299 struct sockaddr_in6 *msad6, *sad6, *ssd6;
5300 struct nfsclclient *clp;
5301 struct nfssockreq *nrp;
5302 struct nfsclds *dsp, *tdsp;
5303 int error;
5304 enum nfsclds_state retv;
5305 uint32_t sequenceid;
5306
5307 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
5308 ("nfsrpc_fillsa: NULL nr_cred"));
5309 NFSLOCKCLSTATE();
5310 clp = nmp->nm_clp;
5311 NFSUNLOCKCLSTATE();
5312 if (clp == NULL)
5313 return (EPERM);
5314 if (ssp->ss_family == AF_INET) {
5315 ssd = (struct sockaddr_in *)ssp;
5316 NFSLOCKMNT(nmp);
5317
5318 /*
5319 * Check to see if we already have a session for this
5320 * address that is usable for a DS.
5321 * Note that the MDS's address is in a different place
5322 * than the sessions already acquired for DS's.
5323 */
5324 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam;
5325 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5326 while (tdsp != NULL) {
5327 if (msad != NULL && msad->sin_family == AF_INET &&
5328 ssd->sin_addr.s_addr == msad->sin_addr.s_addr &&
5329 ssd->sin_port == msad->sin_port &&
5330 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
5331 tdsp->nfsclds_sess.nfsess_defunct == 0) {
5332 *dspp = tdsp;
5333 NFSUNLOCKMNT(nmp);
5334 NFSCL_DEBUG(4, "fnd same addr\n");
5335 return (0);
5336 }
5337 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5338 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5339 msad = (struct sockaddr_in *)
5340 tdsp->nfsclds_sockp->nr_nam;
5341 else
5342 msad = NULL;
5343 }
5344 NFSUNLOCKMNT(nmp);
5345
5346 /* No IP address match, so look for new/trunked one. */
5347 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO);
5348 sad->sin_len = sizeof(*sad);
5349 sad->sin_family = AF_INET;
5350 sad->sin_port = ssd->sin_port;
5351 sad->sin_addr.s_addr = ssd->sin_addr.s_addr;
5352 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5353 nrp->nr_nam = (struct sockaddr *)sad;
5354 } else if (ssp->ss_family == AF_INET6) {
5355 ssd6 = (struct sockaddr_in6 *)ssp;
5356 NFSLOCKMNT(nmp);
5357
5358 /*
5359 * Check to see if we already have a session for this
5360 * address that is usable for a DS.
5361 * Note that the MDS's address is in a different place
5362 * than the sessions already acquired for DS's.
5363 */
5364 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam;
5365 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5366 while (tdsp != NULL) {
5367 if (msad6 != NULL && msad6->sin6_family == AF_INET6 &&
5368 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr,
5369 &msad6->sin6_addr) &&
5370 ssd6->sin6_port == msad6->sin6_port &&
5371 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
5372 tdsp->nfsclds_sess.nfsess_defunct == 0) {
5373 *dspp = tdsp;
5374 NFSUNLOCKMNT(nmp);
5375 return (0);
5376 }
5377 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5378 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5379 msad6 = (struct sockaddr_in6 *)
5380 tdsp->nfsclds_sockp->nr_nam;
5381 else
5382 msad6 = NULL;
5383 }
5384 NFSUNLOCKMNT(nmp);
5385
5386 /* No IP address match, so look for new/trunked one. */
5387 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO);
5388 sad6->sin6_len = sizeof(*sad6);
5389 sad6->sin6_family = AF_INET6;
5390 sad6->sin6_port = ssd6->sin6_port;
5391 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr,
5392 sizeof(struct in6_addr));
5393 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5394 nrp->nr_nam = (struct sockaddr *)sad6;
5395 } else
5396 return (EPERM);
5397
5398 nrp->nr_sotype = SOCK_STREAM;
5399 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF);
5400 nrp->nr_prog = NFS_PROG;
5401 nrp->nr_vers = NFS_VER4;
5402
5403 /*
5404 * Use the credentials that were used for the mount, which are
5405 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc.
5406 * Ref. counting the credentials with crhold() is probably not
5407 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until
5408 * unmount, but I did it anyhow.
5409 */
5410 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred);
5411 error = newnfs_connect(nmp, nrp, NULL, p, 0);
5412 NFSCL_DEBUG(3, "DS connect=%d\n", error);
5413
5414 /* Now, do the exchangeid and create session. */
5415 if (error == 0) {
5416 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS,
5417 &dsp, nrp->nr_cred, p);
5418 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
5419 if (error != 0)
5420 newnfs_disconnect(nrp);
5421 }
5422 if (error == 0) {
5423 dsp->nfsclds_sockp = nrp;
5424 NFSLOCKMNT(nmp);
5425 retv = nfscl_getsameserver(nmp, dsp, &tdsp);
5426 NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
5427 if (retv == NFSDSP_USETHISSESSION) {
5428 NFSUNLOCKMNT(nmp);
5429 /*
5430 * If there is already a session for this server,
5431 * use it.
5432 */
5433 (void)newnfs_disconnect(nrp);
5434 nfscl_freenfsclds(dsp);
5435 *dspp = tdsp;
5436 return (0);
5437 }
5438 if (retv == NFSDSP_SEQTHISSESSION)
5439 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid;
5440 else
5441 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid;
5442 NFSUNLOCKMNT(nmp);
5443 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
5444 nrp, sequenceid, 0, nrp->nr_cred, p);
5445 NFSCL_DEBUG(3, "DS createsess=%d\n", error);
5446 } else {
5447 NFSFREECRED(nrp->nr_cred);
5448 NFSFREEMUTEX(&nrp->nr_mtx);
5449 free(nrp->nr_nam, M_SONAME);
5450 free(nrp, M_NFSSOCKREQ);
5451 }
5452 if (error == 0) {
5453 NFSCL_DEBUG(3, "add DS session\n");
5454 /*
5455 * Put it at the end of the list. That way the list
5456 * is ordered by when the entry was added. This matters
5457 * since the one done first is the one that should be
5458 * used for sequencid'ing any subsequent create sessions.
5459 */
5460 NFSLOCKMNT(nmp);
5461 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list);
5462 NFSUNLOCKMNT(nmp);
5463 *dspp = dsp;
5464 } else if (dsp != NULL) {
5465 newnfs_disconnect(nrp);
5466 nfscl_freenfsclds(dsp);
5467 }
5468 return (error);
5469 }
5470
5471 /*
5472 * Do the NFSv4.1 Reclaim Complete.
5473 */
5474 int
5475 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
5476 {
5477 uint32_t *tl;
5478 struct nfsrv_descript nfsd;
5479 struct nfsrv_descript *nd = &nfsd;
5480 int error;
5481
5482 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL);
5483 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
5484 *tl = newnfs_false;
5485 nd->nd_flag |= ND_USEGSSNAME;
5486 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5487 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5488 if (error != 0)
5489 return (error);
5490 error = nd->nd_repstat;
5491 mbuf_freem(nd->nd_mrep);
5492 return (error);
5493 }
5494
5495 /*
5496 * Initialize the slot tables for a session.
5497 */
5498 static void
5499 nfscl_initsessionslots(struct nfsclsession *sep)
5500 {
5501 int i;
5502
5503 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5504 if (sep->nfsess_cbslots[i].nfssl_reply != NULL)
5505 m_freem(sep->nfsess_cbslots[i].nfssl_reply);
5506 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot));
5507 }
5508 for (i = 0; i < 64; i++)
5509 sep->nfsess_slotseq[i] = 0;
5510 sep->nfsess_slots = 0;
5511 }
5512
5513 /*
5514 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS).
5515 */
5516 int
5517 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5518 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p)
5519 {
5520 struct nfsnode *np = VTONFS(vp);
5521 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5522 struct nfscllayout *layp;
5523 struct nfscldevinfo *dip;
5524 struct nfsclflayout *rflp;
5525 nfsv4stateid_t stateid;
5526 struct ucred *newcred;
5527 uint64_t lastbyte, len, off, oresid, xfer;
5528 int eof, error, iolaymode, recalled;
5529 void *lckp;
5530
5531 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
5532 (np->n_flag & NNOLAYOUT) != 0)
5533 return (EIO);
5534 /* Now, get a reference cnt on the clientid for this mount. */
5535 if (nfscl_getref(nmp) == 0)
5536 return (EIO);
5537
5538 /* Find an appropriate stateid. */
5539 newcred = NFSNEWCRED(cred);
5540 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
5541 rwaccess, 1, newcred, p, &stateid, &lckp);
5542 if (error != 0) {
5543 NFSFREECRED(newcred);
5544 nfscl_relref(nmp);
5545 return (error);
5546 }
5547 /* Search for a layout for this file. */
5548 off = uiop->uio_offset;
5549 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh,
5550 np->n_fhp->nfh_len, off, &rflp, &recalled);
5551 if (layp == NULL || rflp == NULL) {
5552 if (recalled != 0) {
5553 NFSFREECRED(newcred);
5554 nfscl_relref(nmp);
5555 return (EIO);
5556 }
5557 if (layp != NULL) {
5558 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0);
5559 layp = NULL;
5560 }
5561 /* Try and get a Layout, if it is supported. */
5562 if (rwaccess == NFSV4OPEN_ACCESSWRITE ||
5563 (np->n_flag & NWRITEOPENED) != 0)
5564 iolaymode = NFSLAYOUTIOMODE_RW;
5565 else
5566 iolaymode = NFSLAYOUTIOMODE_READ;
5567 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode,
5568 NULL, &stateid, off, &layp, newcred, p);
5569 if (error != 0) {
5570 NFSLOCKNODE(np);
5571 np->n_flag |= NNOLAYOUT;
5572 NFSUNLOCKNODE(np);
5573 if (lckp != NULL)
5574 nfscl_lockderef(lckp);
5575 NFSFREECRED(newcred);
5576 if (layp != NULL)
5577 nfscl_rellayout(layp, 0);
5578 nfscl_relref(nmp);
5579 return (error);
5580 }
5581 }
5582
5583 /*
5584 * Loop around finding a layout that works for the first part of
5585 * this I/O operation, and then call the function that actually
5586 * does the RPC.
5587 */
5588 eof = 0;
5589 len = (uint64_t)uiop->uio_resid;
5590 while (len > 0 && error == 0 && eof == 0) {
5591 off = uiop->uio_offset;
5592 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp);
5593 if (error == 0) {
5594 oresid = xfer = (uint64_t)uiop->uio_resid;
5595 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off))
5596 xfer = rflp->nfsfl_end - rflp->nfsfl_off;
5597 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev,
5598 rflp->nfsfl_devp);
5599 if (dip != NULL) {
5600 error = nfscl_doflayoutio(vp, uiop, iomode,
5601 must_commit, &eof, &stateid, rwaccess, dip,
5602 layp, rflp, off, xfer, newcred, p);
5603 nfscl_reldevinfo(dip);
5604 lastbyte = off + xfer - 1;
5605 if (error == 0) {
5606 NFSLOCKCLSTATE();
5607 if (lastbyte > layp->nfsly_lastbyte)
5608 layp->nfsly_lastbyte = lastbyte;
5609 NFSUNLOCKCLSTATE();
5610 } else if (error == NFSERR_OPENMODE &&
5611 rwaccess == NFSV4OPEN_ACCESSREAD) {
5612 NFSLOCKMNT(nmp);
5613 nmp->nm_state |= NFSSTA_OPENMODE;
5614 NFSUNLOCKMNT(nmp);
5615 }
5616 } else
5617 error = EIO;
5618 if (error == 0)
5619 len -= (oresid - (uint64_t)uiop->uio_resid);
5620 }
5621 }
5622 if (lckp != NULL)
5623 nfscl_lockderef(lckp);
5624 NFSFREECRED(newcred);
5625 nfscl_rellayout(layp, 0);
5626 nfscl_relref(nmp);
5627 return (error);
5628 }
5629
5630 /*
5631 * Find a file layout that will handle the first bytes of the requested
5632 * range and return the information from it needed to to the I/O operation.
5633 */
5634 int
5635 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,
5636 struct nfsclflayout **retflpp)
5637 {
5638 struct nfsclflayout *flp, *nflp, *rflp;
5639 uint32_t rw;
5640
5641 rflp = NULL;
5642 rw = rwaccess;
5643 /* For reading, do the Read list first and then the Write list. */
5644 do {
5645 if (rw == NFSV4OPEN_ACCESSREAD)
5646 flp = LIST_FIRST(&lyp->nfsly_flayread);
5647 else
5648 flp = LIST_FIRST(&lyp->nfsly_flayrw);
5649 while (flp != NULL) {
5650 nflp = LIST_NEXT(flp, nfsfl_list);
5651 if (flp->nfsfl_off > off)
5652 break;
5653 if (flp->nfsfl_end > off &&
5654 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end))
5655 rflp = flp;
5656 flp = nflp;
5657 }
5658 if (rw == NFSV4OPEN_ACCESSREAD)
5659 rw = NFSV4OPEN_ACCESSWRITE;
5660 else
5661 rw = 0;
5662 } while (rw != 0);
5663 if (rflp != NULL) {
5664 /* This one covers the most bytes starting at off. */
5665 *retflpp = rflp;
5666 return (0);
5667 }
5668 return (EIO);
5669 }
5670
5671 /*
5672 * Do I/O using an NFSv4.1 file layout.
5673 */
5674 static int
5675 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5676 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
5677 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
5678 uint64_t len, struct ucred *cred, NFSPROC_T *p)
5679 {
5680 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
5681 int commit_thru_mds, error = 0, stripe_index, stripe_pos;
5682 struct nfsnode *np;
5683 struct nfsfh *fhp;
5684 struct nfsclds **dspp;
5685
5686 np = VTONFS(vp);
5687 rel_off = off - flp->nfsfl_patoff;
5688 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff;
5689 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
5690 dp->nfsdi_stripecnt;
5691 transfer = stripe_unit_size - (rel_off % stripe_unit_size);
5692
5693 /* Loop around, doing I/O for each stripe unit. */
5694 while (len > 0 && error == 0) {
5695 stripe_index = nfsfldi_stripeindex(dp, stripe_pos);
5696 dspp = nfsfldi_addr(dp, stripe_index);
5697 if (len > transfer)
5698 xfer = transfer;
5699 else
5700 xfer = len;
5701 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) {
5702 /* Dense layout. */
5703 if (stripe_pos >= flp->nfsfl_fhcnt)
5704 return (EIO);
5705 fhp = flp->nfsfl_fh[stripe_pos];
5706 io_off = (rel_off / (stripe_unit_size *
5707 dp->nfsdi_stripecnt)) * stripe_unit_size +
5708 rel_off % stripe_unit_size;
5709 } else {
5710 /* Sparse layout. */
5711 if (flp->nfsfl_fhcnt > 1) {
5712 if (stripe_index >= flp->nfsfl_fhcnt)
5713 return (EIO);
5714 fhp = flp->nfsfl_fh[stripe_index];
5715 } else if (flp->nfsfl_fhcnt == 1)
5716 fhp = flp->nfsfl_fh[0];
5717 else
5718 fhp = np->n_fhp;
5719 io_off = off;
5720 }
5721 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0)
5722 commit_thru_mds = 1;
5723 else
5724 commit_thru_mds = 0;
5725 if (rwflag == FREAD)
5726 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
5727 io_off, xfer, fhp, cred, p);
5728 else {
5729 error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
5730 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
5731 cred, p);
5732 if (error == 0) {
5733 NFSLOCKCLSTATE();
5734 lyp->nfsly_flags |= NFSLY_WRITTEN;
5735 NFSUNLOCKCLSTATE();
5736 }
5737 }
5738 if (error == 0) {
5739 transfer = stripe_unit_size;
5740 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt;
5741 len -= xfer;
5742 off += xfer;
5743 }
5744 }
5745 return (error);
5746 }
5747
5748 /*
5749 * The actual read RPC done to a DS.
5750 */
5751 static int
5752 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp,
5753 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp,
5754 struct ucred *cred, NFSPROC_T *p)
5755 {
5756 uint32_t *tl;
5757 int error, retlen;
5758 struct nfsrv_descript nfsd;
5759 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5760 struct nfsrv_descript *nd = &nfsd;
5761 struct nfssockreq *nrp;
5762
5763 nd->nd_mrep = NULL;
5764 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5765 NULL, &dsp->nfsclds_sess);
5766 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
5767 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
5768 txdr_hyper(io_off, tl);
5769 *(tl + 2) = txdr_unsigned(len);
5770 nrp = dsp->nfsclds_sockp;
5771 if (nrp == NULL)
5772 /* If NULL, use the MDS socket. */
5773 nrp = &nmp->nm_sockreq;
5774 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5775 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5776 if (error != 0)
5777 return (error);
5778 if (nd->nd_repstat != 0) {
5779 error = nd->nd_repstat;
5780 goto nfsmout;
5781 }
5782 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5783 *eofp = fxdr_unsigned(int, *tl);
5784 NFSM_STRSIZ(retlen, len);
5785 error = nfsm_mbufuio(nd, uiop, retlen);
5786 nfsmout:
5787 if (nd->nd_mrep != NULL)
5788 mbuf_freem(nd->nd_mrep);
5789 return (error);
5790 }
5791
5792 /*
5793 * The actual write RPC done to a DS.
5794 */
5795 static int
5796 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5797 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
5798 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p)
5799 {
5800 uint32_t *tl;
5801 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5802 int error, rlen, commit, committed = NFSWRITE_FILESYNC;
5803 int32_t backup;
5804 struct nfsrv_descript nfsd;
5805 struct nfsrv_descript *nd = &nfsd;
5806 struct nfssockreq *nrp;
5807
5808 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
5809 nd->nd_mrep = NULL;
5810 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5811 NULL, &dsp->nfsclds_sess);
5812 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
5813 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
5814 txdr_hyper(io_off, tl);
5815 tl += 2;
5816 *tl++ = txdr_unsigned(*iomode);
5817 *tl = txdr_unsigned(len);
5818 nfsm_uiombuf(nd, uiop, len);
5819 nrp = dsp->nfsclds_sockp;
5820 if (nrp == NULL)
5821 /* If NULL, use the MDS socket. */
5822 nrp = &nmp->nm_sockreq;
5823 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5824 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5825 if (error != 0)
5826 return (error);
5827 if (nd->nd_repstat != 0) {
5828 /*
5829 * In case the rpc gets retried, roll
5830 * the uio fileds changed by nfsm_uiombuf()
5831 * back.
5832 */
5833 uiop->uio_offset -= len;
5834 uio_uio_resid_add(uiop, len);
5835 uio_iov_base_add(uiop, -len);
5836 uio_iov_len_add(uiop, len);
5837 error = nd->nd_repstat;
5838 } else {
5839 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
5840 rlen = fxdr_unsigned(int, *tl++);
5841 if (rlen == 0) {
5842 error = NFSERR_IO;
5843 goto nfsmout;
5844 } else if (rlen < len) {
5845 backup = len - rlen;
5846 uio_iov_base_add(uiop, -(backup));
5847 uio_iov_len_add(uiop, backup);
5848 uiop->uio_offset -= backup;
5849 uio_uio_resid_add(uiop, backup);
5850 len = rlen;
5851 }
5852 commit = fxdr_unsigned(int, *tl++);
5853
5854 /*
5855 * Return the lowest commitment level
5856 * obtained by any of the RPCs.
5857 */
5858 if (committed == NFSWRITE_FILESYNC)
5859 committed = commit;
5860 else if (committed == NFSWRITE_DATASYNC &&
5861 commit == NFSWRITE_UNSTABLE)
5862 committed = commit;
5863 if (commit_thru_mds != 0) {
5864 NFSLOCKMNT(nmp);
5865 if (!NFSHASWRITEVERF(nmp)) {
5866 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
5867 NFSSETWRITEVERF(nmp);
5868 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
5869 *must_commit = 1;
5870 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
5871 }
5872 NFSUNLOCKMNT(nmp);
5873 } else {
5874 NFSLOCKDS(dsp);
5875 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
5876 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5877 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
5878 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
5879 *must_commit = 1;
5880 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5881 }
5882 NFSUNLOCKDS(dsp);
5883 }
5884 }
5885 nfsmout:
5886 if (nd->nd_mrep != NULL)
5887 mbuf_freem(nd->nd_mrep);
5888 *iomode = committed;
5889 if (nd->nd_repstat != 0 && error == 0)
5890 error = nd->nd_repstat;
5891 return (error);
5892 }
5893
5894 /*
5895 * Free up the nfsclds structure.
5896 */
5897 void
5898 nfscl_freenfsclds(struct nfsclds *dsp)
5899 {
5900 int i;
5901
5902 if (dsp == NULL)
5903 return;
5904 if (dsp->nfsclds_sockp != NULL) {
5905 NFSFREECRED(dsp->nfsclds_sockp->nr_cred);
5906 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx);
5907 free(dsp->nfsclds_sockp->nr_nam, M_SONAME);
5908 free(dsp->nfsclds_sockp, M_NFSSOCKREQ);
5909 }
5910 NFSFREEMUTEX(&dsp->nfsclds_mtx);
5911 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx);
5912 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5913 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL)
5914 m_freem(
5915 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply);
5916 }
5917 free(dsp, M_NFSCLDS);
5918 }
5919
5920 static enum nfsclds_state
5921 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp,
5922 struct nfsclds **retdspp)
5923 {
5924 struct nfsclds *dsp, *cur_dsp;
5925
5926 /*
5927 * Search the list of nfsclds structures for one with the same
5928 * server.
5929 */
5930 cur_dsp = NULL;
5931 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
5932 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen &&
5933 dsp->nfsclds_servownlen != 0 &&
5934 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown,
5935 dsp->nfsclds_servownlen) &&
5936 dsp->nfsclds_sess.nfsess_defunct == 0) {
5937 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
5938 TAILQ_FIRST(&nmp->nm_sess), dsp,
5939 dsp->nfsclds_flags);
5940 /* Server major id matches. */
5941 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
5942 *retdspp = dsp;
5943 return (NFSDSP_USETHISSESSION);
5944 }
5945
5946 /*
5947 * Note the first match, so it can be used for
5948 * sequence'ing new sessions.
5949 */
5950 if (cur_dsp == NULL)
5951 cur_dsp = dsp;
5952 }
5953 }
5954 if (cur_dsp != NULL) {
5955 *retdspp = cur_dsp;
5956 return (NFSDSP_SEQTHISSESSION);
5957 }
5958 return (NFSDSP_NOTFOUND);
5959 }
5960
5961 #ifdef notyet
5962 /*
5963 * NFS commit rpc to a DS.
5964 */
5965 static int
5966 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
5967 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff)
5968 {
5969 uint32_t *tl;
5970 struct nfsrv_descript nfsd, *nd = &nfsd;
5971 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5972 struct nfssockreq *nrp;
5973 int error;
5974
5975 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len,
5976 NULL, &dsp->nfsclds_sess);
5977 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
5978 txdr_hyper(offset, tl);
5979 tl += 2;
5980 *tl = txdr_unsigned(cnt);
5981 nrp = dsp->nfsclds_sockp;
5982 if (nrp == NULL)
5983 /* If NULL, use the MDS socket. */
5984 nrp = &nmp->nm_sockreq;
5985 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
5986 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
5987 if (error)
5988 return (error);
5989 if (nd->nd_repstat == 0) {
5990 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
5991 NFSLOCKDS(dsp);
5992 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
5993 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
5994 error = NFSERR_STALEWRITEVERF;
5995 }
5996 NFSUNLOCKDS(dsp);
5997 }
5998 nfsmout:
5999 if (error == 0 && nd->nd_repstat != 0)
6000 error = nd->nd_repstat;
6001 mbuf_freem(nd->nd_mrep);
6002 return (error);
6003 }
6004 #endif
6005
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