1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Rick Macklem at The University of Guelph.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38
39 /*
40 * Rpc op calls, generally called from the vnode op calls or through the
41 * buffer cache, for NFS v2, 3 and 4.
42 * These do not normally make any changes to vnode arguments or use
43 * structures that might change between the VFS variants. The returned
44 * arguments are all at the end, after the NFSPROC_T *p one.
45 */
46
47 #include "opt_inet6.h"
48
49 #include <fs/nfs/nfsport.h>
50 #include <fs/nfsclient/nfs.h>
51 #include <sys/extattr.h>
52 #include <sys/sysctl.h>
53 #include <sys/taskqueue.h>
54
55 SYSCTL_DECL(_vfs_nfs);
56
57 static int nfsignore_eexist = 0;
58 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW,
59 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink");
60
61 static int nfscl_dssameconn = 0;
62 SYSCTL_INT(_vfs_nfs, OID_AUTO, dssameconn, CTLFLAG_RW,
63 &nfscl_dssameconn, 0, "Use same TCP connection to multiple DSs");
64
65 /*
66 * Global variables
67 */
68 extern int nfs_numnfscbd;
69 extern struct timeval nfsboottime;
70 extern u_int32_t newnfs_false, newnfs_true;
71 extern nfstype nfsv34_type[9];
72 extern int nfsrv_useacl;
73 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
74 extern int nfscl_debuglevel;
75 extern int nfs_pnfsiothreads;
76 extern u_long sb_max_adj;
77 extern int nfs_maxcopyrange;
78 NFSCLSTATEMUTEX;
79 int nfstest_outofseq = 0;
80 int nfscl_assumeposixlocks = 1;
81 int nfscl_enablecallb = 0;
82 short nfsv4_cbport = NFSV4_CBPORT;
83 int nfstest_openallsetattr = 0;
84
85 #define DIRHDSIZ offsetof(struct dirent, d_name)
86
87 /*
88 * nfscl_getsameserver() can return one of three values:
89 * NFSDSP_USETHISSESSION - Use this session for the DS.
90 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new
91 * session.
92 * NFSDSP_NOTFOUND - No matching server was found.
93 */
94 enum nfsclds_state {
95 NFSDSP_USETHISSESSION = 0,
96 NFSDSP_SEQTHISSESSION = 1,
97 NFSDSP_NOTFOUND = 2,
98 };
99
100 /*
101 * Do a write RPC on a DS data file, using this structure for the arguments,
102 * so that this function can be executed by a separate kernel process.
103 */
104 struct nfsclwritedsdorpc {
105 int done;
106 int inprog;
107 struct task tsk;
108 struct vnode *vp;
109 int iomode;
110 int must_commit;
111 nfsv4stateid_t *stateidp;
112 struct nfsclds *dsp;
113 uint64_t off;
114 int len;
115 #ifdef notyet
116 int advise;
117 #endif
118 struct nfsfh *fhp;
119 struct mbuf *m;
120 int vers;
121 int minorvers;
122 struct ucred *cred;
123 NFSPROC_T *p;
124 int err;
125 };
126
127 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
128 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
129 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
130 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
131 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
132 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
133 void *);
134 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
135 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
136 struct nfsvattr *, struct nfsfh **, int *, int *, void *);
137 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
138 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
139 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
140 int *, void *, int *);
141 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
142 struct nfscllockowner *, u_int64_t, u_int64_t,
143 u_int32_t, struct ucred *, NFSPROC_T *, int);
144 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
145 struct acl *, nfsv4stateid_t *, void *);
146 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int,
147 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **,
148 struct ucred *, NFSPROC_T *);
149 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *,
150 struct sockaddr_in6 *, sa_family_t, int, int, struct nfsclds **,
151 NFSPROC_T *);
152 static void nfscl_initsessionslots(struct nfsclsession *);
153 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *,
154 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
155 struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *,
156 NFSPROC_T *);
157 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *,
158 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
159 struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *,
160 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *);
161 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *,
162 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int,
163 struct ucred *, NFSPROC_T *);
164 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *,
165 nfsv4stateid_t *, struct nfsclds *, uint64_t, int,
166 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *);
167 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *,
168 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int,
169 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *);
170 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *,
171 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int,
172 struct ucred *, NFSPROC_T *);
173 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *,
174 struct nfsclds *, struct nfsclds **, uint32_t *);
175 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *,
176 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *,
177 NFSPROC_T *);
178 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *,
179 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *);
180 #ifdef notyet
181 static int nfsio_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *,
182 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *,
183 NFSPROC_T *);
184 static int nfsrpc_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *,
185 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *);
186 #endif
187 static int nfsrpc_allocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *,
188 struct nfsvattr *, int *, struct ucred *, NFSPROC_T *, void *);
189 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t,
190 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int);
191 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *,
192 NFSPROC_T *);
193 static int nfsrv_parselayoutget(struct nfsmount *, struct nfsrv_descript *,
194 nfsv4stateid_t *, int *, struct nfsclflayouthead *);
195 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *,
196 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int,
197 struct nfscldeleg **, struct ucred *, NFSPROC_T *);
198 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *,
199 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **,
200 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *,
201 struct nfsfh **, int *, int *, void *, int *);
202 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *,
203 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int,
204 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *,
205 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *);
206 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *,
207 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **,
208 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *,
209 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *,
210 int, int, int, int *, struct nfsclflayouthead *, int *);
211 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t,
212 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *,
213 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *);
214 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *,
215 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **,
216 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *);
217 static int nfsrpc_copyrpc(vnode_t, off_t, vnode_t, off_t, size_t *,
218 nfsv4stateid_t *, nfsv4stateid_t *, struct nfsvattr *, int *,
219 struct nfsvattr *, int *, bool, int *, struct ucred *, NFSPROC_T *);
220 static int nfsrpc_seekrpc(vnode_t, off_t *, nfsv4stateid_t *, bool *,
221 int, struct nfsvattr *, int *, struct ucred *);
222 static struct mbuf *nfsm_split(struct mbuf *, uint64_t);
223
224 int nfs_pnfsio(task_fn_t *, void *);
225
226 /*
227 * nfs null call from vfs.
228 */
229 int
230 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
231 {
232 int error;
233 struct nfsrv_descript nfsd, *nd = &nfsd;
234
235 NFSCL_REQSTART(nd, NFSPROC_NULL, vp);
236 error = nfscl_request(nd, vp, p, cred, NULL);
237 if (nd->nd_repstat && !error)
238 error = nd->nd_repstat;
239 m_freem(nd->nd_mrep);
240 return (error);
241 }
242
243 /*
244 * nfs access rpc op.
245 * For nfs version 3 and 4, use the access rpc to check accessibility. If file
246 * modes are changed on the server, accesses might still fail later.
247 */
248 int
249 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
250 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
251 {
252 int error;
253 u_int32_t mode, rmode;
254
255 if (acmode & VREAD)
256 mode = NFSACCESS_READ;
257 else
258 mode = 0;
259 if (vnode_vtype(vp) == VDIR) {
260 if (acmode & VWRITE)
261 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
262 NFSACCESS_DELETE);
263 if (acmode & VEXEC)
264 mode |= NFSACCESS_LOOKUP;
265 } else {
266 if (acmode & VWRITE)
267 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
268 if (acmode & VEXEC)
269 mode |= NFSACCESS_EXECUTE;
270 }
271
272 /*
273 * Now, just call nfsrpc_accessrpc() to do the actual RPC.
274 */
275 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode,
276 NULL);
277
278 /*
279 * The NFS V3 spec does not clarify whether or not
280 * the returned access bits can be a superset of
281 * the ones requested, so...
282 */
283 if (!error && (rmode & mode) != mode)
284 error = EACCES;
285 return (error);
286 }
287
288 /*
289 * The actual rpc, separated out for Darwin.
290 */
291 int
292 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
293 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep,
294 void *stuff)
295 {
296 u_int32_t *tl;
297 u_int32_t supported, rmode;
298 int error;
299 struct nfsrv_descript nfsd, *nd = &nfsd;
300 nfsattrbit_t attrbits;
301
302 *attrflagp = 0;
303 supported = mode;
304 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
305 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
306 *tl = txdr_unsigned(mode);
307 if (nd->nd_flag & ND_NFSV4) {
308 /*
309 * And do a Getattr op.
310 */
311 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
312 *tl = txdr_unsigned(NFSV4OP_GETATTR);
313 NFSGETATTR_ATTRBIT(&attrbits);
314 (void) nfsrv_putattrbit(nd, &attrbits);
315 }
316 error = nfscl_request(nd, vp, p, cred, stuff);
317 if (error)
318 return (error);
319 if (nd->nd_flag & ND_NFSV3) {
320 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
321 if (error)
322 goto nfsmout;
323 }
324 if (!nd->nd_repstat) {
325 if (nd->nd_flag & ND_NFSV4) {
326 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
327 supported = fxdr_unsigned(u_int32_t, *tl++);
328 } else {
329 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
330 }
331 rmode = fxdr_unsigned(u_int32_t, *tl);
332 if (nd->nd_flag & ND_NFSV4)
333 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
334
335 /*
336 * It's not obvious what should be done about
337 * unsupported access modes. For now, be paranoid
338 * and clear the unsupported ones.
339 */
340 rmode &= supported;
341 *rmodep = rmode;
342 } else
343 error = nd->nd_repstat;
344 nfsmout:
345 m_freem(nd->nd_mrep);
346 return (error);
347 }
348
349 /*
350 * nfs open rpc
351 */
352 int
353 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
354 {
355 struct nfsclopen *op;
356 struct nfscldeleg *dp;
357 struct nfsfh *nfhp;
358 struct nfsnode *np = VTONFS(vp);
359 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
360 u_int32_t mode, clidrev;
361 int ret, newone, error, expireret = 0, retrycnt;
362
363 /*
364 * For NFSv4, Open Ops are only done on Regular Files.
365 */
366 if (vnode_vtype(vp) != VREG)
367 return (0);
368 mode = 0;
369 if (amode & FREAD)
370 mode |= NFSV4OPEN_ACCESSREAD;
371 if (amode & FWRITE)
372 mode |= NFSV4OPEN_ACCESSWRITE;
373 nfhp = np->n_fhp;
374
375 retrycnt = 0;
376 #ifdef notdef
377 { char name[100]; int namel;
378 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
379 bcopy(NFS4NODENAME(np->n_v4), name, namel);
380 name[namel] = '\0';
381 printf("rpcopen p=0x%x name=%s",p->p_pid,name);
382 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
383 else printf(" fhl=0\n");
384 }
385 #endif
386 do {
387 dp = NULL;
388 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
389 cred, p, NULL, &op, &newone, &ret, 1);
390 if (error) {
391 return (error);
392 }
393 if (nmp->nm_clp != NULL)
394 clidrev = nmp->nm_clp->nfsc_clientidrev;
395 else
396 clidrev = 0;
397 if (ret == NFSCLOPEN_DOOPEN) {
398 if (np->n_v4 != NULL) {
399 /*
400 * For the first attempt, try and get a layout, if
401 * pNFS is enabled for the mount.
402 */
403 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 ||
404 nfs_numnfscbd == 0 ||
405 (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0)
406 error = nfsrpc_openrpc(nmp, vp,
407 np->n_v4->n4_data,
408 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
409 np->n_fhp->nfh_len, mode, op,
410 NFS4NODENAME(np->n_v4),
411 np->n_v4->n4_namelen,
412 &dp, 0, 0x0, cred, p, 0, 0);
413 else
414 error = nfsrpc_getopenlayout(nmp, vp,
415 np->n_v4->n4_data,
416 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
417 np->n_fhp->nfh_len, mode, op,
418 NFS4NODENAME(np->n_v4),
419 np->n_v4->n4_namelen, &dp, cred, p);
420 if (dp != NULL) {
421 #ifdef APPLE
422 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
423 #else
424 NFSLOCKNODE(np);
425 np->n_flag &= ~NDELEGMOD;
426 /*
427 * Invalidate the attribute cache, so that
428 * attributes that pre-date the issue of a
429 * delegation are not cached, since the
430 * cached attributes will remain valid while
431 * the delegation is held.
432 */
433 NFSINVALATTRCACHE(np);
434 NFSUNLOCKNODE(np);
435 #endif
436 (void) nfscl_deleg(nmp->nm_mountp,
437 op->nfso_own->nfsow_clp,
438 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
439 }
440 } else {
441 error = EIO;
442 }
443 newnfs_copyincred(cred, &op->nfso_cred);
444 } else if (ret == NFSCLOPEN_SETCRED)
445 /*
446 * This is a new local open on a delegation. It needs
447 * to have credentials so that an open can be done
448 * against the server during recovery.
449 */
450 newnfs_copyincred(cred, &op->nfso_cred);
451
452 /*
453 * nfso_opencnt is the count of how many VOP_OPEN()s have
454 * been done on this Open successfully and a VOP_CLOSE()
455 * is expected for each of these.
456 * If error is non-zero, don't increment it, since the Open
457 * hasn't succeeded yet.
458 */
459 if (!error)
460 op->nfso_opencnt++;
461 nfscl_openrelease(nmp, op, error, newone);
462 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
463 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
464 error == NFSERR_BADSESSION) {
465 (void) nfs_catnap(PZERO, error, "nfs_open");
466 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
467 && clidrev != 0) {
468 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
469 retrycnt++;
470 }
471 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
472 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
473 error == NFSERR_BADSESSION ||
474 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
475 expireret == 0 && clidrev != 0 && retrycnt < 4));
476 if (error && retrycnt >= 4)
477 error = EIO;
478 return (error);
479 }
480
481 /*
482 * the actual open rpc
483 */
484 int
485 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
486 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
487 u_int8_t *name, int namelen, struct nfscldeleg **dpp,
488 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
489 int syscred, int recursed)
490 {
491 u_int32_t *tl;
492 struct nfsrv_descript nfsd, *nd = &nfsd;
493 struct nfscldeleg *dp, *ndp = NULL;
494 struct nfsvattr nfsva;
495 u_int32_t rflags, deleg;
496 nfsattrbit_t attrbits;
497 int error, ret, acesize, limitby;
498 struct nfsclsession *tsep;
499
500 dp = *dpp;
501 *dpp = NULL;
502 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0);
503 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
504 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
505 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
506 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
507 tsep = nfsmnt_mdssession(nmp);
508 *tl++ = tsep->nfsess_clientid.lval[0];
509 *tl = tsep->nfsess_clientid.lval[1];
510 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
511 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
512 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
513 if (reclaim) {
514 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
515 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
516 *tl = txdr_unsigned(delegtype);
517 } else {
518 if (dp != NULL) {
519 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
520 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
521 if (NFSHASNFSV4N(nmp))
522 *tl++ = 0;
523 else
524 *tl++ = dp->nfsdl_stateid.seqid;
525 *tl++ = dp->nfsdl_stateid.other[0];
526 *tl++ = dp->nfsdl_stateid.other[1];
527 *tl = dp->nfsdl_stateid.other[2];
528 } else {
529 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
530 }
531 (void) nfsm_strtom(nd, name, namelen);
532 }
533 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
534 *tl = txdr_unsigned(NFSV4OP_GETATTR);
535 NFSZERO_ATTRBIT(&attrbits);
536 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
537 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
538 (void) nfsrv_putattrbit(nd, &attrbits);
539 if (syscred)
540 nd->nd_flag |= ND_USEGSSNAME;
541 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
542 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
543 if (error)
544 return (error);
545 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
546 if (!nd->nd_repstat) {
547 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
548 6 * NFSX_UNSIGNED);
549 op->nfso_stateid.seqid = *tl++;
550 op->nfso_stateid.other[0] = *tl++;
551 op->nfso_stateid.other[1] = *tl++;
552 op->nfso_stateid.other[2] = *tl;
553 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
554 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
555 if (error)
556 goto nfsmout;
557 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
558 deleg = fxdr_unsigned(u_int32_t, *tl);
559 if (deleg == NFSV4OPEN_DELEGATEREAD ||
560 deleg == NFSV4OPEN_DELEGATEWRITE) {
561 if (!(op->nfso_own->nfsow_clp->nfsc_flags &
562 NFSCLFLAGS_FIRSTDELEG))
563 op->nfso_own->nfsow_clp->nfsc_flags |=
564 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
565 ndp = malloc(
566 sizeof (struct nfscldeleg) + newfhlen,
567 M_NFSCLDELEG, M_WAITOK);
568 LIST_INIT(&ndp->nfsdl_owner);
569 LIST_INIT(&ndp->nfsdl_lock);
570 ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
571 ndp->nfsdl_fhlen = newfhlen;
572 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
573 newnfs_copyincred(cred, &ndp->nfsdl_cred);
574 nfscl_lockinit(&ndp->nfsdl_rwlock);
575 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
576 NFSX_UNSIGNED);
577 ndp->nfsdl_stateid.seqid = *tl++;
578 ndp->nfsdl_stateid.other[0] = *tl++;
579 ndp->nfsdl_stateid.other[1] = *tl++;
580 ndp->nfsdl_stateid.other[2] = *tl++;
581 ret = fxdr_unsigned(int, *tl);
582 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
583 ndp->nfsdl_flags = NFSCLDL_WRITE;
584 /*
585 * Indicates how much the file can grow.
586 */
587 NFSM_DISSECT(tl, u_int32_t *,
588 3 * NFSX_UNSIGNED);
589 limitby = fxdr_unsigned(int, *tl++);
590 switch (limitby) {
591 case NFSV4OPEN_LIMITSIZE:
592 ndp->nfsdl_sizelimit = fxdr_hyper(tl);
593 break;
594 case NFSV4OPEN_LIMITBLOCKS:
595 ndp->nfsdl_sizelimit =
596 fxdr_unsigned(u_int64_t, *tl++);
597 ndp->nfsdl_sizelimit *=
598 fxdr_unsigned(u_int64_t, *tl);
599 break;
600 default:
601 error = NFSERR_BADXDR;
602 goto nfsmout;
603 }
604 } else {
605 ndp->nfsdl_flags = NFSCLDL_READ;
606 }
607 if (ret)
608 ndp->nfsdl_flags |= NFSCLDL_RECALL;
609 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
610 &acesize, p);
611 if (error)
612 goto nfsmout;
613 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
614 error = NFSERR_BADXDR;
615 goto nfsmout;
616 }
617 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
618 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
619 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
620 NULL, NULL, NULL, p, cred);
621 if (error)
622 goto nfsmout;
623 if (ndp != NULL) {
624 ndp->nfsdl_change = nfsva.na_filerev;
625 ndp->nfsdl_modtime = nfsva.na_mtime;
626 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
627 }
628 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
629 do {
630 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
631 cred, p);
632 if (ret == NFSERR_DELAY)
633 (void) nfs_catnap(PZERO, ret, "nfs_open");
634 } while (ret == NFSERR_DELAY);
635 error = ret;
636 }
637 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
638 nfscl_assumeposixlocks)
639 op->nfso_posixlock = 1;
640 else
641 op->nfso_posixlock = 0;
642
643 /*
644 * If the server is handing out delegations, but we didn't
645 * get one because an OpenConfirm was required, try the
646 * Open again, to get a delegation. This is a harmless no-op,
647 * from a server's point of view.
648 */
649 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
650 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
651 && !error && dp == NULL && ndp == NULL && !recursed) {
652 do {
653 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
654 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
655 cred, p, syscred, 1);
656 if (ret == NFSERR_DELAY)
657 (void) nfs_catnap(PZERO, ret, "nfs_open2");
658 } while (ret == NFSERR_DELAY);
659 if (ret) {
660 if (ndp != NULL) {
661 free(ndp, M_NFSCLDELEG);
662 ndp = NULL;
663 }
664 if (ret == NFSERR_STALECLIENTID ||
665 ret == NFSERR_STALEDONTRECOVER ||
666 ret == NFSERR_BADSESSION)
667 error = ret;
668 }
669 }
670 }
671 if (nd->nd_repstat != 0 && error == 0)
672 error = nd->nd_repstat;
673 if (error == NFSERR_STALECLIENTID)
674 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
675 nfsmout:
676 if (!error)
677 *dpp = ndp;
678 else if (ndp != NULL)
679 free(ndp, M_NFSCLDELEG);
680 m_freem(nd->nd_mrep);
681 return (error);
682 }
683
684 /*
685 * open downgrade rpc
686 */
687 int
688 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
689 struct ucred *cred, NFSPROC_T *p)
690 {
691 u_int32_t *tl;
692 struct nfsrv_descript nfsd, *nd = &nfsd;
693 int error;
694
695 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
696 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
697 if (NFSHASNFSV4N(VFSTONFS(vp->v_mount)))
698 *tl++ = 0;
699 else
700 *tl++ = op->nfso_stateid.seqid;
701 *tl++ = op->nfso_stateid.other[0];
702 *tl++ = op->nfso_stateid.other[1];
703 *tl++ = op->nfso_stateid.other[2];
704 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
705 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
706 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
707 error = nfscl_request(nd, vp, p, cred, NULL);
708 if (error)
709 return (error);
710 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
711 if (!nd->nd_repstat) {
712 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
713 op->nfso_stateid.seqid = *tl++;
714 op->nfso_stateid.other[0] = *tl++;
715 op->nfso_stateid.other[1] = *tl++;
716 op->nfso_stateid.other[2] = *tl;
717 }
718 if (nd->nd_repstat && error == 0)
719 error = nd->nd_repstat;
720 if (error == NFSERR_STALESTATEID)
721 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
722 nfsmout:
723 m_freem(nd->nd_mrep);
724 return (error);
725 }
726
727 /*
728 * V4 Close operation.
729 */
730 int
731 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
732 {
733 struct nfsclclient *clp;
734 int error;
735
736 if (vnode_vtype(vp) != VREG)
737 return (0);
738 if (doclose)
739 error = nfscl_doclose(vp, &clp, p);
740 else
741 error = nfscl_getclose(vp, &clp);
742 if (error)
743 return (error);
744
745 nfscl_clientrelease(clp);
746 return (0);
747 }
748
749 /*
750 * Close the open.
751 */
752 void
753 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
754 {
755 struct nfsrv_descript nfsd, *nd = &nfsd;
756 struct nfscllockowner *lp, *nlp;
757 struct nfscllock *lop, *nlop;
758 struct ucred *tcred;
759 u_int64_t off = 0, len = 0;
760 u_int32_t type = NFSV4LOCKT_READ;
761 int error, do_unlock, trycnt;
762
763 tcred = newnfs_getcred();
764 newnfs_copycred(&op->nfso_cred, tcred);
765 /*
766 * (Theoretically this could be done in the same
767 * compound as the close, but having multiple
768 * sequenced Ops in the same compound might be
769 * too scary for some servers.)
770 */
771 if (op->nfso_posixlock) {
772 off = 0;
773 len = NFS64BITSSET;
774 type = NFSV4LOCKT_READ;
775 }
776
777 /*
778 * Since this function is only called from VOP_INACTIVE(), no
779 * other thread will be manipulating this Open. As such, the
780 * lock lists are not being changed by other threads, so it should
781 * be safe to do this without locking.
782 */
783 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
784 do_unlock = 1;
785 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
786 if (op->nfso_posixlock == 0) {
787 off = lop->nfslo_first;
788 len = lop->nfslo_end - lop->nfslo_first;
789 if (lop->nfslo_type == F_WRLCK)
790 type = NFSV4LOCKT_WRITE;
791 else
792 type = NFSV4LOCKT_READ;
793 }
794 if (do_unlock) {
795 trycnt = 0;
796 do {
797 error = nfsrpc_locku(nd, nmp, lp, off,
798 len, type, tcred, p, 0);
799 if ((nd->nd_repstat == NFSERR_GRACE ||
800 nd->nd_repstat == NFSERR_DELAY) &&
801 error == 0)
802 (void) nfs_catnap(PZERO,
803 (int)nd->nd_repstat,
804 "nfs_close");
805 } while ((nd->nd_repstat == NFSERR_GRACE ||
806 nd->nd_repstat == NFSERR_DELAY) &&
807 error == 0 && trycnt++ < 5);
808 if (op->nfso_posixlock)
809 do_unlock = 0;
810 }
811 nfscl_freelock(lop, 0);
812 }
813 /*
814 * Do a ReleaseLockOwner.
815 * The lock owner name nfsl_owner may be used by other opens for
816 * other files but the lock_owner4 name that nfsrpc_rellockown()
817 * puts on the wire has the file handle for this file appended
818 * to it, so it can be done now.
819 */
820 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
821 lp->nfsl_open->nfso_fhlen, tcred, p);
822 }
823
824 /*
825 * There could be other Opens for different files on the same
826 * OpenOwner, so locking is required.
827 */
828 NFSLOCKCLSTATE();
829 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
830 NFSUNLOCKCLSTATE();
831 do {
832 error = nfscl_tryclose(op, tcred, nmp, p);
833 if (error == NFSERR_GRACE)
834 (void) nfs_catnap(PZERO, error, "nfs_close");
835 } while (error == NFSERR_GRACE);
836 NFSLOCKCLSTATE();
837 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
838
839 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
840 nfscl_freelockowner(lp, 0);
841 nfscl_freeopen(op, 0);
842 NFSUNLOCKCLSTATE();
843 NFSFREECRED(tcred);
844 }
845
846 /*
847 * The actual Close RPC.
848 */
849 int
850 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
851 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
852 int syscred)
853 {
854 u_int32_t *tl;
855 int error;
856
857 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
858 op->nfso_fhlen, NULL, NULL, 0, 0);
859 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
860 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
861 if (NFSHASNFSV4N(nmp))
862 *tl++ = 0;
863 else
864 *tl++ = op->nfso_stateid.seqid;
865 *tl++ = op->nfso_stateid.other[0];
866 *tl++ = op->nfso_stateid.other[1];
867 *tl = op->nfso_stateid.other[2];
868 if (syscred)
869 nd->nd_flag |= ND_USEGSSNAME;
870 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
871 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
872 if (error)
873 return (error);
874 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
875 if (nd->nd_repstat == 0)
876 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
877 error = nd->nd_repstat;
878 if (error == NFSERR_STALESTATEID)
879 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
880 nfsmout:
881 m_freem(nd->nd_mrep);
882 return (error);
883 }
884
885 /*
886 * V4 Open Confirm RPC.
887 */
888 int
889 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
890 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
891 {
892 u_int32_t *tl;
893 struct nfsrv_descript nfsd, *nd = &nfsd;
894 struct nfsmount *nmp;
895 int error;
896
897 nmp = VFSTONFS(vp->v_mount);
898 if (NFSHASNFSV4N(nmp))
899 return (0); /* No confirmation for NFSv4.1. */
900 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL,
901 0, 0);
902 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
903 *tl++ = op->nfso_stateid.seqid;
904 *tl++ = op->nfso_stateid.other[0];
905 *tl++ = op->nfso_stateid.other[1];
906 *tl++ = op->nfso_stateid.other[2];
907 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
908 error = nfscl_request(nd, vp, p, cred, NULL);
909 if (error)
910 return (error);
911 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
912 if (!nd->nd_repstat) {
913 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
914 op->nfso_stateid.seqid = *tl++;
915 op->nfso_stateid.other[0] = *tl++;
916 op->nfso_stateid.other[1] = *tl++;
917 op->nfso_stateid.other[2] = *tl;
918 }
919 error = nd->nd_repstat;
920 if (error == NFSERR_STALESTATEID)
921 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
922 nfsmout:
923 m_freem(nd->nd_mrep);
924 return (error);
925 }
926
927 /*
928 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
929 * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
930 */
931 int
932 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
933 bool *retokp, struct ucred *cred, NFSPROC_T *p)
934 {
935 u_int32_t *tl;
936 struct nfsrv_descript nfsd;
937 struct nfsrv_descript *nd = &nfsd;
938 nfsattrbit_t attrbits;
939 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
940 u_short port;
941 int error, isinet6 = 0, callblen;
942 nfsquad_t confirm;
943 u_int32_t lease;
944 static u_int32_t rev = 0;
945 struct nfsclds *dsp, *odsp;
946 struct in6_addr a6;
947 struct nfsclsession *tsep;
948
949 if (nfsboottime.tv_sec == 0)
950 NFSSETBOOTTIME(nfsboottime);
951 if (NFSHASNFSV4N(nmp)) {
952 error = NFSERR_BADSESSION;
953 odsp = dsp = NULL;
954 if (retokp != NULL) {
955 NFSLOCKMNT(nmp);
956 odsp = TAILQ_FIRST(&nmp->nm_sess);
957 NFSUNLOCKMNT(nmp);
958 }
959 if (odsp != NULL) {
960 /*
961 * When a session already exists, first try a
962 * CreateSession with the extant ClientID.
963 */
964 dsp = malloc(sizeof(struct nfsclds) +
965 odsp->nfsclds_servownlen + 1, M_NFSCLDS,
966 M_WAITOK | M_ZERO);
967 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
968 dsp->nfsclds_servownlen = odsp->nfsclds_servownlen;
969 dsp->nfsclds_sess.nfsess_clientid =
970 odsp->nfsclds_sess.nfsess_clientid;
971 dsp->nfsclds_sess.nfsess_sequenceid =
972 odsp->nfsclds_sess.nfsess_sequenceid;
973 dsp->nfsclds_flags = odsp->nfsclds_flags;
974 if (dsp->nfsclds_servownlen > 0)
975 memcpy(dsp->nfsclds_serverown,
976 odsp->nfsclds_serverown,
977 dsp->nfsclds_servownlen + 1);
978 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
979 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
980 NULL, MTX_DEF);
981 nfscl_initsessionslots(&dsp->nfsclds_sess);
982 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
983 &nmp->nm_sockreq, NULL,
984 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
985 NFSCL_DEBUG(1, "create session for extant "
986 "ClientID=%d\n", error);
987 if (error != 0) {
988 nfscl_freenfsclds(dsp);
989 dsp = NULL;
990 /*
991 * If *retokp is true, return any error other
992 * than NFSERR_STALECLIENTID,
993 * NFSERR_BADSESSION or NFSERR_STALEDONTRECOVER
994 * so that nfscl_recover() will not loop.
995 */
996 if (*retokp)
997 return (NFSERR_IO);
998 } else
999 *retokp = true;
1000 } else if (retokp != NULL && *retokp)
1001 return (NFSERR_IO);
1002 if (error != 0) {
1003 /*
1004 * Either there was no previous session or the
1005 * CreateSession attempt failed, so...
1006 * do an ExchangeID followed by the CreateSession.
1007 */
1008 clp->nfsc_rev = rev++;
1009 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 0,
1010 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp,
1011 cred, p);
1012 NFSCL_DEBUG(1, "aft exch=%d\n", error);
1013 if (error == 0)
1014 error = nfsrpc_createsession(nmp,
1015 &dsp->nfsclds_sess, &nmp->nm_sockreq, NULL,
1016 dsp->nfsclds_sess.nfsess_sequenceid, 1,
1017 cred, p);
1018 NFSCL_DEBUG(1, "aft createsess=%d\n", error);
1019 }
1020 if (error == 0) {
1021 NFSLOCKMNT(nmp);
1022 /*
1023 * The old sessions cannot be safely free'd
1024 * here, since they may still be used by
1025 * in-progress RPCs.
1026 */
1027 tsep = NULL;
1028 if (TAILQ_FIRST(&nmp->nm_sess) != NULL)
1029 tsep = NFSMNT_MDSSESSION(nmp);
1030 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
1031 nfsclds_list);
1032 /*
1033 * Wake up RPCs waiting for a slot on the
1034 * old session. These will then fail with
1035 * NFSERR_BADSESSION and be retried with the
1036 * new session by nfsv4_setsequence().
1037 * Also wakeup() processes waiting for the
1038 * new session.
1039 */
1040 if (tsep != NULL)
1041 wakeup(&tsep->nfsess_slots);
1042 wakeup(&nmp->nm_sess);
1043 NFSUNLOCKMNT(nmp);
1044 } else if (dsp != NULL)
1045 nfscl_freenfsclds(dsp);
1046 if (error == 0 && reclaim == 0) {
1047 error = nfsrpc_reclaimcomplete(nmp, cred, p);
1048 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error);
1049 if (error == NFSERR_COMPLETEALREADY ||
1050 error == NFSERR_NOTSUPP)
1051 /* Ignore this error. */
1052 error = 0;
1053 }
1054 return (error);
1055 } else if (retokp != NULL && *retokp)
1056 return (NFSERR_IO);
1057 clp->nfsc_rev = rev++;
1058
1059 /*
1060 * Allocate a single session structure for NFSv4.0, because some of
1061 * the fields are used by NFSv4.0 although it doesn't do a session.
1062 */
1063 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO);
1064 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
1065 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF);
1066 NFSLOCKMNT(nmp);
1067 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list);
1068 tsep = NFSMNT_MDSSESSION(nmp);
1069 NFSUNLOCKMNT(nmp);
1070
1071 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0);
1072 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1073 *tl++ = txdr_unsigned(nfsboottime.tv_sec);
1074 *tl = txdr_unsigned(clp->nfsc_rev);
1075 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
1076
1077 /*
1078 * set up the callback address
1079 */
1080 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1081 *tl = txdr_unsigned(NFS_CALLBCKPROG);
1082 callblen = strlen(nfsv4_callbackaddr);
1083 if (callblen == 0)
1084 cp = nfscl_getmyip(nmp, &a6, &isinet6);
1085 if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
1086 (callblen > 0 || cp != NULL)) {
1087 port = htons(nfsv4_cbport);
1088 cp2 = (u_int8_t *)&port;
1089 #ifdef INET6
1090 if ((callblen > 0 &&
1091 strchr(nfsv4_callbackaddr, ':')) || isinet6) {
1092 char ip6buf[INET6_ADDRSTRLEN], *ip6add;
1093
1094 (void) nfsm_strtom(nd, "tcp6", 4);
1095 if (callblen == 0) {
1096 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
1097 ip6add = ip6buf;
1098 } else {
1099 ip6add = nfsv4_callbackaddr;
1100 }
1101 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
1102 ip6add, cp2[0], cp2[1]);
1103 } else
1104 #endif
1105 {
1106 (void) nfsm_strtom(nd, "tcp", 3);
1107 if (callblen == 0)
1108 snprintf(addr, INET6_ADDRSTRLEN + 9,
1109 "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
1110 cp[2], cp[3], cp2[0], cp2[1]);
1111 else
1112 snprintf(addr, INET6_ADDRSTRLEN + 9,
1113 "%s.%d.%d", nfsv4_callbackaddr,
1114 cp2[0], cp2[1]);
1115 }
1116 (void) nfsm_strtom(nd, addr, strlen(addr));
1117 } else {
1118 (void) nfsm_strtom(nd, "tcp", 3);
1119 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
1120 }
1121 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1122 *tl = txdr_unsigned(clp->nfsc_cbident);
1123 nd->nd_flag |= ND_USEGSSNAME;
1124 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1125 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
1126 if (error)
1127 return (error);
1128 if (nd->nd_repstat == 0) {
1129 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1130 tsep->nfsess_clientid.lval[0] = *tl++;
1131 tsep->nfsess_clientid.lval[1] = *tl++;
1132 confirm.lval[0] = *tl++;
1133 confirm.lval[1] = *tl;
1134 m_freem(nd->nd_mrep);
1135 nd->nd_mrep = NULL;
1136
1137 /*
1138 * and confirm it.
1139 */
1140 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
1141 NULL, 0, 0);
1142 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1143 *tl++ = tsep->nfsess_clientid.lval[0];
1144 *tl++ = tsep->nfsess_clientid.lval[1];
1145 *tl++ = confirm.lval[0];
1146 *tl = confirm.lval[1];
1147 nd->nd_flag |= ND_USEGSSNAME;
1148 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
1149 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
1150 if (error)
1151 return (error);
1152 m_freem(nd->nd_mrep);
1153 nd->nd_mrep = NULL;
1154 if (nd->nd_repstat == 0) {
1155 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
1156 nmp->nm_fhsize, NULL, NULL, 0, 0);
1157 NFSZERO_ATTRBIT(&attrbits);
1158 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1159 (void) nfsrv_putattrbit(nd, &attrbits);
1160 nd->nd_flag |= ND_USEGSSNAME;
1161 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
1162 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
1163 if (error)
1164 return (error);
1165 if (nd->nd_repstat == 0) {
1166 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
1167 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
1168 if (error)
1169 goto nfsmout;
1170 clp->nfsc_renew = NFSCL_RENEW(lease);
1171 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
1172 clp->nfsc_clientidrev++;
1173 if (clp->nfsc_clientidrev == 0)
1174 clp->nfsc_clientidrev++;
1175 }
1176 }
1177 }
1178 error = nd->nd_repstat;
1179 nfsmout:
1180 m_freem(nd->nd_mrep);
1181 return (error);
1182 }
1183
1184 /*
1185 * nfs getattr call.
1186 */
1187 int
1188 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
1189 struct nfsvattr *nap, void *stuff)
1190 {
1191 struct nfsrv_descript nfsd, *nd = &nfsd;
1192 int error;
1193 nfsattrbit_t attrbits;
1194
1195 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
1196 if (nd->nd_flag & ND_NFSV4) {
1197 NFSGETATTR_ATTRBIT(&attrbits);
1198 (void) nfsrv_putattrbit(nd, &attrbits);
1199 }
1200 error = nfscl_request(nd, vp, p, cred, stuff);
1201 if (error)
1202 return (error);
1203 if (!nd->nd_repstat)
1204 error = nfsm_loadattr(nd, nap);
1205 else
1206 error = nd->nd_repstat;
1207 m_freem(nd->nd_mrep);
1208 return (error);
1209 }
1210
1211 /*
1212 * nfs getattr call with non-vnode arguemnts.
1213 */
1214 int
1215 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
1216 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp,
1217 uint32_t *leasep)
1218 {
1219 struct nfsrv_descript nfsd, *nd = &nfsd;
1220 int error, vers = NFS_VER2;
1221 nfsattrbit_t attrbits;
1222
1223 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0);
1224 if (nd->nd_flag & ND_NFSV4) {
1225 vers = NFS_VER4;
1226 NFSGETATTR_ATTRBIT(&attrbits);
1227 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1228 (void) nfsrv_putattrbit(nd, &attrbits);
1229 } else if (nd->nd_flag & ND_NFSV3) {
1230 vers = NFS_VER3;
1231 }
1232 if (syscred)
1233 nd->nd_flag |= ND_USEGSSNAME;
1234 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1235 NFS_PROG, vers, NULL, 1, xidp, NULL);
1236 if (error)
1237 return (error);
1238 if (nd->nd_repstat == 0) {
1239 if ((nd->nd_flag & ND_NFSV4) != 0)
1240 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
1241 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL,
1242 NULL, NULL);
1243 else
1244 error = nfsm_loadattr(nd, nap);
1245 } else
1246 error = nd->nd_repstat;
1247 m_freem(nd->nd_mrep);
1248 return (error);
1249 }
1250
1251 /*
1252 * Do an nfs setattr operation.
1253 */
1254 int
1255 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
1256 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
1257 void *stuff)
1258 {
1259 int error, expireret = 0, openerr, retrycnt;
1260 u_int32_t clidrev = 0, mode;
1261 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1262 struct nfsfh *nfhp;
1263 nfsv4stateid_t stateid;
1264 void *lckp;
1265
1266 if (nmp->nm_clp != NULL)
1267 clidrev = nmp->nm_clp->nfsc_clientidrev;
1268 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
1269 mode = NFSV4OPEN_ACCESSWRITE;
1270 else
1271 mode = NFSV4OPEN_ACCESSREAD;
1272 retrycnt = 0;
1273 do {
1274 lckp = NULL;
1275 openerr = 1;
1276 if (NFSHASNFSV4(nmp)) {
1277 nfhp = VTONFS(vp)->n_fhp;
1278 error = nfscl_getstateid(vp, nfhp->nfh_fh,
1279 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp);
1280 if (error && vnode_vtype(vp) == VREG &&
1281 (mode == NFSV4OPEN_ACCESSWRITE ||
1282 nfstest_openallsetattr)) {
1283 /*
1284 * No Open stateid, so try and open the file
1285 * now.
1286 */
1287 if (mode == NFSV4OPEN_ACCESSWRITE)
1288 openerr = nfsrpc_open(vp, FWRITE, cred,
1289 p);
1290 else
1291 openerr = nfsrpc_open(vp, FREAD, cred,
1292 p);
1293 if (!openerr)
1294 (void) nfscl_getstateid(vp,
1295 nfhp->nfh_fh, nfhp->nfh_len,
1296 mode, 0, cred, p, &stateid, &lckp);
1297 }
1298 }
1299 if (vap != NULL)
1300 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
1301 rnap, attrflagp, stuff);
1302 else
1303 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
1304 stuff);
1305 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) {
1306 NFSLOCKMNT(nmp);
1307 nmp->nm_state |= NFSSTA_OPENMODE;
1308 NFSUNLOCKMNT(nmp);
1309 }
1310 if (error == NFSERR_STALESTATEID)
1311 nfscl_initiate_recovery(nmp->nm_clp);
1312 if (lckp != NULL)
1313 nfscl_lockderef(lckp);
1314 if (!openerr)
1315 (void) nfsrpc_close(vp, 0, p);
1316 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1317 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1318 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1319 (void) nfs_catnap(PZERO, error, "nfs_setattr");
1320 } else if ((error == NFSERR_EXPIRED ||
1321 error == NFSERR_BADSTATEID) && clidrev != 0) {
1322 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1323 }
1324 retrycnt++;
1325 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1326 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1327 error == NFSERR_BADSESSION ||
1328 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1329 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1330 expireret == 0 && clidrev != 0 && retrycnt < 4) ||
1331 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD &&
1332 retrycnt < 4));
1333 if (error && retrycnt >= 4)
1334 error = EIO;
1335 return (error);
1336 }
1337
1338 static int
1339 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1340 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1341 struct nfsvattr *rnap, int *attrflagp, void *stuff)
1342 {
1343 u_int32_t *tl;
1344 struct nfsrv_descript nfsd, *nd = &nfsd;
1345 int error;
1346 nfsattrbit_t attrbits;
1347
1348 *attrflagp = 0;
1349 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1350 if (nd->nd_flag & ND_NFSV4)
1351 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1352 vap->va_type = vnode_vtype(vp);
1353 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1354 if (nd->nd_flag & ND_NFSV3) {
1355 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1356 *tl = newnfs_false;
1357 } else if (nd->nd_flag & ND_NFSV4) {
1358 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1359 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1360 NFSGETATTR_ATTRBIT(&attrbits);
1361 (void) nfsrv_putattrbit(nd, &attrbits);
1362 }
1363 error = nfscl_request(nd, vp, p, cred, stuff);
1364 if (error)
1365 return (error);
1366 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1367 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1368 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error)
1369 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1370 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1371 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1372 m_freem(nd->nd_mrep);
1373 if (nd->nd_repstat && !error)
1374 error = nd->nd_repstat;
1375 return (error);
1376 }
1377
1378 /*
1379 * nfs lookup rpc
1380 */
1381 int
1382 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1383 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1384 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1385 {
1386 u_int32_t *tl;
1387 struct nfsrv_descript nfsd, *nd = &nfsd;
1388 struct nfsmount *nmp;
1389 struct nfsnode *np;
1390 struct nfsfh *nfhp;
1391 nfsattrbit_t attrbits;
1392 int error = 0, lookupp = 0;
1393
1394 *attrflagp = 0;
1395 *dattrflagp = 0;
1396 if (vnode_vtype(dvp) != VDIR)
1397 return (ENOTDIR);
1398 nmp = VFSTONFS(dvp->v_mount);
1399 if (len > NFS_MAXNAMLEN)
1400 return (ENAMETOOLONG);
1401 if (NFSHASNFSV4(nmp) && len == 1 &&
1402 name[0] == '.') {
1403 /*
1404 * Just return the current dir's fh.
1405 */
1406 np = VTONFS(dvp);
1407 nfhp = malloc(sizeof (struct nfsfh) +
1408 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1409 nfhp->nfh_len = np->n_fhp->nfh_len;
1410 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1411 *nfhpp = nfhp;
1412 return (0);
1413 }
1414 if (NFSHASNFSV4(nmp) && len == 2 &&
1415 name[0] == '.' && name[1] == '.') {
1416 lookupp = 1;
1417 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1418 } else {
1419 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1420 (void) nfsm_strtom(nd, name, len);
1421 }
1422 if (nd->nd_flag & ND_NFSV4) {
1423 NFSGETATTR_ATTRBIT(&attrbits);
1424 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1425 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1426 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1427 (void) nfsrv_putattrbit(nd, &attrbits);
1428 }
1429 error = nfscl_request(nd, dvp, p, cred, stuff);
1430 if (error)
1431 return (error);
1432 if (nd->nd_repstat) {
1433 /*
1434 * When an NFSv4 Lookupp returns ENOENT, it means that
1435 * the lookup is at the root of an fs, so return this dir.
1436 */
1437 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1438 np = VTONFS(dvp);
1439 nfhp = malloc(sizeof (struct nfsfh) +
1440 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1441 nfhp->nfh_len = np->n_fhp->nfh_len;
1442 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1443 *nfhpp = nfhp;
1444 m_freem(nd->nd_mrep);
1445 return (0);
1446 }
1447 if (nd->nd_flag & ND_NFSV3)
1448 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1449 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
1450 ND_NFSV4) {
1451 /* Load the directory attributes. */
1452 error = nfsm_loadattr(nd, dnap);
1453 if (error == 0)
1454 *dattrflagp = 1;
1455 }
1456 goto nfsmout;
1457 }
1458 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1459 /* Load the directory attributes. */
1460 error = nfsm_loadattr(nd, dnap);
1461 if (error != 0)
1462 goto nfsmout;
1463 *dattrflagp = 1;
1464 /* Skip over the Lookup and GetFH operation status values. */
1465 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1466 }
1467 error = nfsm_getfh(nd, nfhpp);
1468 if (error)
1469 goto nfsmout;
1470
1471 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1472 if ((nd->nd_flag & ND_NFSV3) && !error)
1473 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1474 nfsmout:
1475 m_freem(nd->nd_mrep);
1476 if (!error && nd->nd_repstat)
1477 error = nd->nd_repstat;
1478 return (error);
1479 }
1480
1481 /*
1482 * Do a readlink rpc.
1483 */
1484 int
1485 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1486 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1487 {
1488 u_int32_t *tl;
1489 struct nfsrv_descript nfsd, *nd = &nfsd;
1490 struct nfsnode *np = VTONFS(vp);
1491 nfsattrbit_t attrbits;
1492 int error, len, cangetattr = 1;
1493
1494 *attrflagp = 0;
1495 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1496 if (nd->nd_flag & ND_NFSV4) {
1497 /*
1498 * And do a Getattr op.
1499 */
1500 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1501 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1502 NFSGETATTR_ATTRBIT(&attrbits);
1503 (void) nfsrv_putattrbit(nd, &attrbits);
1504 }
1505 error = nfscl_request(nd, vp, p, cred, stuff);
1506 if (error)
1507 return (error);
1508 if (nd->nd_flag & ND_NFSV3)
1509 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1510 if (!nd->nd_repstat && !error) {
1511 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1512 /*
1513 * This seems weird to me, but must have been added to
1514 * FreeBSD for some reason. The only thing I can think of
1515 * is that there was/is some server that replies with
1516 * more link data than it should?
1517 */
1518 if (len == NFS_MAXPATHLEN) {
1519 NFSLOCKNODE(np);
1520 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1521 len = np->n_size;
1522 cangetattr = 0;
1523 }
1524 NFSUNLOCKNODE(np);
1525 }
1526 error = nfsm_mbufuio(nd, uiop, len);
1527 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1528 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1529 }
1530 if (nd->nd_repstat && !error)
1531 error = nd->nd_repstat;
1532 nfsmout:
1533 m_freem(nd->nd_mrep);
1534 return (error);
1535 }
1536
1537 /*
1538 * Read operation.
1539 */
1540 int
1541 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1542 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1543 {
1544 int error, expireret = 0, retrycnt;
1545 u_int32_t clidrev = 0;
1546 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1547 struct nfsnode *np = VTONFS(vp);
1548 struct ucred *newcred;
1549 struct nfsfh *nfhp = NULL;
1550 nfsv4stateid_t stateid;
1551 void *lckp;
1552
1553 if (nmp->nm_clp != NULL)
1554 clidrev = nmp->nm_clp->nfsc_clientidrev;
1555 newcred = cred;
1556 if (NFSHASNFSV4(nmp)) {
1557 nfhp = np->n_fhp;
1558 newcred = NFSNEWCRED(cred);
1559 }
1560 retrycnt = 0;
1561 do {
1562 lckp = NULL;
1563 if (NFSHASNFSV4(nmp))
1564 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1565 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid,
1566 &lckp);
1567 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1568 attrflagp, stuff);
1569 if (error == NFSERR_OPENMODE) {
1570 NFSLOCKMNT(nmp);
1571 nmp->nm_state |= NFSSTA_OPENMODE;
1572 NFSUNLOCKMNT(nmp);
1573 }
1574 if (error == NFSERR_STALESTATEID)
1575 nfscl_initiate_recovery(nmp->nm_clp);
1576 if (lckp != NULL)
1577 nfscl_lockderef(lckp);
1578 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1579 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1580 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1581 (void) nfs_catnap(PZERO, error, "nfs_read");
1582 } else if ((error == NFSERR_EXPIRED ||
1583 error == NFSERR_BADSTATEID) && clidrev != 0) {
1584 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1585 }
1586 retrycnt++;
1587 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1588 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1589 error == NFSERR_BADSESSION ||
1590 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1591 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1592 expireret == 0 && clidrev != 0 && retrycnt < 4) ||
1593 (error == NFSERR_OPENMODE && retrycnt < 4));
1594 if (error && retrycnt >= 4)
1595 error = EIO;
1596 if (NFSHASNFSV4(nmp))
1597 NFSFREECRED(newcred);
1598 return (error);
1599 }
1600
1601 /*
1602 * The actual read RPC.
1603 */
1604 static int
1605 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1606 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1607 int *attrflagp, void *stuff)
1608 {
1609 u_int32_t *tl;
1610 int error = 0, len, retlen, tsiz, eof = 0;
1611 struct nfsrv_descript nfsd;
1612 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1613 struct nfsrv_descript *nd = &nfsd;
1614 int rsize;
1615 off_t tmp_off;
1616
1617 *attrflagp = 0;
1618 tsiz = uiop->uio_resid;
1619 tmp_off = uiop->uio_offset + tsiz;
1620 NFSLOCKMNT(nmp);
1621 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1622 NFSUNLOCKMNT(nmp);
1623 return (EFBIG);
1624 }
1625 rsize = nmp->nm_rsize;
1626 NFSUNLOCKMNT(nmp);
1627 nd->nd_mrep = NULL;
1628 while (tsiz > 0) {
1629 *attrflagp = 0;
1630 len = (tsiz > rsize) ? rsize : tsiz;
1631 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1632 if (nd->nd_flag & ND_NFSV4)
1633 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1634 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1635 if (nd->nd_flag & ND_NFSV2) {
1636 *tl++ = txdr_unsigned(uiop->uio_offset);
1637 *tl++ = txdr_unsigned(len);
1638 *tl = 0;
1639 } else {
1640 txdr_hyper(uiop->uio_offset, tl);
1641 *(tl + 2) = txdr_unsigned(len);
1642 }
1643 /*
1644 * Since I can't do a Getattr for NFSv4 for Write, there
1645 * doesn't seem any point in doing one here, either.
1646 * (See the comment in nfsrpc_writerpc() for more info.)
1647 */
1648 error = nfscl_request(nd, vp, p, cred, stuff);
1649 if (error)
1650 return (error);
1651 if (nd->nd_flag & ND_NFSV3) {
1652 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1653 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1654 error = nfsm_loadattr(nd, nap);
1655 if (!error)
1656 *attrflagp = 1;
1657 }
1658 if (nd->nd_repstat || error) {
1659 if (!error)
1660 error = nd->nd_repstat;
1661 goto nfsmout;
1662 }
1663 if (nd->nd_flag & ND_NFSV3) {
1664 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1665 eof = fxdr_unsigned(int, *(tl + 1));
1666 } else if (nd->nd_flag & ND_NFSV4) {
1667 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1668 eof = fxdr_unsigned(int, *tl);
1669 }
1670 NFSM_STRSIZ(retlen, len);
1671 error = nfsm_mbufuio(nd, uiop, retlen);
1672 if (error)
1673 goto nfsmout;
1674 m_freem(nd->nd_mrep);
1675 nd->nd_mrep = NULL;
1676 tsiz -= retlen;
1677 if (!(nd->nd_flag & ND_NFSV2)) {
1678 if (eof || retlen == 0)
1679 tsiz = 0;
1680 } else if (retlen < len)
1681 tsiz = 0;
1682 }
1683 return (0);
1684 nfsmout:
1685 if (nd->nd_mrep != NULL)
1686 m_freem(nd->nd_mrep);
1687 return (error);
1688 }
1689
1690 /*
1691 * nfs write operation
1692 * When called_from_strategy != 0, it should return EIO for an error that
1693 * indicates recovery is in progress, so that the buffer will be left
1694 * dirty and be written back to the server later. If it loops around,
1695 * the recovery thread could get stuck waiting for the buffer and recovery
1696 * will then deadlock.
1697 */
1698 int
1699 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
1700 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1701 void *stuff, int called_from_strategy)
1702 {
1703 int error, expireret = 0, retrycnt, nostateid;
1704 u_int32_t clidrev = 0;
1705 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1706 struct nfsnode *np = VTONFS(vp);
1707 struct ucred *newcred;
1708 struct nfsfh *nfhp = NULL;
1709 nfsv4stateid_t stateid;
1710 void *lckp;
1711
1712 *must_commit = 0;
1713 if (nmp->nm_clp != NULL)
1714 clidrev = nmp->nm_clp->nfsc_clientidrev;
1715 newcred = cred;
1716 if (NFSHASNFSV4(nmp)) {
1717 newcred = NFSNEWCRED(cred);
1718 nfhp = np->n_fhp;
1719 }
1720 retrycnt = 0;
1721 do {
1722 lckp = NULL;
1723 nostateid = 0;
1724 if (NFSHASNFSV4(nmp)) {
1725 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1726 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid,
1727 &lckp);
1728 if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1729 stateid.other[2] == 0) {
1730 nostateid = 1;
1731 NFSCL_DEBUG(1, "stateid0 in write\n");
1732 }
1733 }
1734
1735 /*
1736 * If there is no stateid for NFSv4, it means this is an
1737 * extraneous write after close. Basically a poorly
1738 * implemented buffer cache. Just don't do the write.
1739 */
1740 if (nostateid)
1741 error = 0;
1742 else
1743 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
1744 newcred, &stateid, p, nap, attrflagp, stuff);
1745 if (error == NFSERR_STALESTATEID)
1746 nfscl_initiate_recovery(nmp->nm_clp);
1747 if (lckp != NULL)
1748 nfscl_lockderef(lckp);
1749 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1750 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1751 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1752 (void) nfs_catnap(PZERO, error, "nfs_write");
1753 } else if ((error == NFSERR_EXPIRED ||
1754 error == NFSERR_BADSTATEID) && clidrev != 0) {
1755 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1756 }
1757 retrycnt++;
1758 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1759 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1760 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1761 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1762 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1763 expireret == 0 && clidrev != 0 && retrycnt < 4));
1764 if (error != 0 && (retrycnt >= 4 ||
1765 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1766 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1767 error = EIO;
1768 if (NFSHASNFSV4(nmp))
1769 NFSFREECRED(newcred);
1770 return (error);
1771 }
1772
1773 /*
1774 * The actual write RPC.
1775 */
1776 static int
1777 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1778 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
1779 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1780 {
1781 u_int32_t *tl;
1782 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
1783 struct nfsnode *np = VTONFS(vp);
1784 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1785 int wccflag = 0, wsize;
1786 int32_t backup;
1787 struct nfsrv_descript nfsd;
1788 struct nfsrv_descript *nd = &nfsd;
1789 nfsattrbit_t attrbits;
1790 off_t tmp_off;
1791
1792 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1793 *attrflagp = 0;
1794 tsiz = uiop->uio_resid;
1795 tmp_off = uiop->uio_offset + tsiz;
1796 NFSLOCKMNT(nmp);
1797 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1798 NFSUNLOCKMNT(nmp);
1799 return (EFBIG);
1800 }
1801 wsize = nmp->nm_wsize;
1802 NFSUNLOCKMNT(nmp);
1803 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */
1804 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */
1805 while (tsiz > 0) {
1806 *attrflagp = 0;
1807 len = (tsiz > wsize) ? wsize : tsiz;
1808 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1809 if (nd->nd_flag & ND_NFSV4) {
1810 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1811 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1812 txdr_hyper(uiop->uio_offset, tl);
1813 tl += 2;
1814 *tl++ = txdr_unsigned(*iomode);
1815 *tl = txdr_unsigned(len);
1816 } else if (nd->nd_flag & ND_NFSV3) {
1817 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1818 txdr_hyper(uiop->uio_offset, tl);
1819 tl += 2;
1820 *tl++ = txdr_unsigned(len);
1821 *tl++ = txdr_unsigned(*iomode);
1822 *tl = txdr_unsigned(len);
1823 } else {
1824 u_int32_t x;
1825
1826 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1827 /*
1828 * Not sure why someone changed this, since the
1829 * RFC clearly states that "beginoffset" and
1830 * "totalcount" are ignored, but it wouldn't
1831 * surprise me if there's a busted server out there.
1832 */
1833 /* Set both "begin" and "current" to non-garbage. */
1834 x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1835 *tl++ = x; /* "begin offset" */
1836 *tl++ = x; /* "current offset" */
1837 x = txdr_unsigned(len);
1838 *tl++ = x; /* total to this offset */
1839 *tl = x; /* size of this write */
1840 }
1841 nfsm_uiombuf(nd, uiop, len);
1842 /*
1843 * Although it is tempting to do a normal Getattr Op in the
1844 * NFSv4 compound, the result can be a nearly hung client
1845 * system if the Getattr asks for Owner and/or OwnerGroup.
1846 * It occurs when the client can't map either the Owner or
1847 * Owner_group name in the Getattr reply to a uid/gid. When
1848 * there is a cache miss, the kernel does an upcall to the
1849 * nfsuserd. Then, it can try and read the local /etc/passwd
1850 * or /etc/group file. It can then block in getnewbuf(),
1851 * waiting for dirty writes to be pushed to the NFS server.
1852 * The only reason this doesn't result in a complete
1853 * deadlock, is that the upcall times out and allows
1854 * the write to complete. However, progress is so slow
1855 * that it might just as well be deadlocked.
1856 * As such, we get the rest of the attributes, but not
1857 * Owner or Owner_group.
1858 * nb: nfscl_loadattrcache() needs to be told that these
1859 * partial attributes from a write rpc are being
1860 * passed in, via a argument flag.
1861 */
1862 if (nd->nd_flag & ND_NFSV4) {
1863 NFSWRITEGETATTR_ATTRBIT(&attrbits);
1864 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1865 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1866 (void) nfsrv_putattrbit(nd, &attrbits);
1867 }
1868 error = nfscl_request(nd, vp, p, cred, stuff);
1869 if (error)
1870 return (error);
1871 if (nd->nd_repstat) {
1872 /*
1873 * In case the rpc gets retried, roll
1874 * the uio fileds changed by nfsm_uiombuf()
1875 * back.
1876 */
1877 uiop->uio_offset -= len;
1878 uiop->uio_resid += len;
1879 uiop->uio_iov->iov_base =
1880 (char *)uiop->uio_iov->iov_base - len;
1881 uiop->uio_iov->iov_len += len;
1882 }
1883 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1884 error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1885 &wccflag, stuff);
1886 if (error)
1887 goto nfsmout;
1888 }
1889 if (!nd->nd_repstat) {
1890 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1891 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1892 + NFSX_VERF);
1893 rlen = fxdr_unsigned(int, *tl++);
1894 if (rlen == 0) {
1895 error = NFSERR_IO;
1896 goto nfsmout;
1897 } else if (rlen < len) {
1898 backup = len - rlen;
1899 uiop->uio_iov->iov_base =
1900 (char *)uiop->uio_iov->iov_base -
1901 backup;
1902 uiop->uio_iov->iov_len += backup;
1903 uiop->uio_offset -= backup;
1904 uiop->uio_resid += backup;
1905 len = rlen;
1906 }
1907 commit = fxdr_unsigned(int, *tl++);
1908
1909 /*
1910 * Return the lowest commitment level
1911 * obtained by any of the RPCs.
1912 */
1913 if (committed == NFSWRITE_FILESYNC)
1914 committed = commit;
1915 else if (committed == NFSWRITE_DATASYNC &&
1916 commit == NFSWRITE_UNSTABLE)
1917 committed = commit;
1918 NFSLOCKMNT(nmp);
1919 if (!NFSHASWRITEVERF(nmp)) {
1920 NFSBCOPY((caddr_t)tl,
1921 (caddr_t)&nmp->nm_verf[0],
1922 NFSX_VERF);
1923 NFSSETWRITEVERF(nmp);
1924 } else if (NFSBCMP(tl, nmp->nm_verf,
1925 NFSX_VERF)) {
1926 *must_commit = 1;
1927 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
1928 }
1929 NFSUNLOCKMNT(nmp);
1930 }
1931 if (nd->nd_flag & ND_NFSV4)
1932 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1933 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1934 error = nfsm_loadattr(nd, nap);
1935 if (!error)
1936 *attrflagp = NFS_LATTR_NOSHRINK;
1937 }
1938 } else {
1939 error = nd->nd_repstat;
1940 }
1941 if (error)
1942 goto nfsmout;
1943 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4));
1944 m_freem(nd->nd_mrep);
1945 nd->nd_mrep = NULL;
1946 tsiz -= len;
1947 }
1948 nfsmout:
1949 if (nd->nd_mrep != NULL)
1950 m_freem(nd->nd_mrep);
1951 *iomode = committed;
1952 if (nd->nd_repstat && !error)
1953 error = nd->nd_repstat;
1954 return (error);
1955 }
1956
1957 /*
1958 * nfs mknod rpc
1959 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1960 * mode set to specify the file type and the size field for rdev.
1961 */
1962 int
1963 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1964 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1965 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1966 int *attrflagp, int *dattrflagp, void *dstuff)
1967 {
1968 u_int32_t *tl;
1969 int error = 0;
1970 struct nfsrv_descript nfsd, *nd = &nfsd;
1971 nfsattrbit_t attrbits;
1972
1973 *nfhpp = NULL;
1974 *attrflagp = 0;
1975 *dattrflagp = 0;
1976 if (namelen > NFS_MAXNAMLEN)
1977 return (ENAMETOOLONG);
1978 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1979 if (nd->nd_flag & ND_NFSV4) {
1980 if (vtyp == VBLK || vtyp == VCHR) {
1981 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1982 *tl++ = vtonfsv34_type(vtyp);
1983 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1984 *tl = txdr_unsigned(NFSMINOR(rdev));
1985 } else {
1986 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1987 *tl = vtonfsv34_type(vtyp);
1988 }
1989 }
1990 (void) nfsm_strtom(nd, name, namelen);
1991 if (nd->nd_flag & ND_NFSV3) {
1992 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1993 *tl = vtonfsv34_type(vtyp);
1994 }
1995 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1996 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1997 if ((nd->nd_flag & ND_NFSV3) &&
1998 (vtyp == VCHR || vtyp == VBLK)) {
1999 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2000 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
2001 *tl = txdr_unsigned(NFSMINOR(rdev));
2002 }
2003 if (nd->nd_flag & ND_NFSV4) {
2004 NFSGETATTR_ATTRBIT(&attrbits);
2005 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2006 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2007 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2008 (void) nfsrv_putattrbit(nd, &attrbits);
2009 }
2010 if (nd->nd_flag & ND_NFSV2)
2011 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
2012 error = nfscl_request(nd, dvp, p, cred, dstuff);
2013 if (error)
2014 return (error);
2015 if (nd->nd_flag & ND_NFSV4)
2016 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2017 if (!nd->nd_repstat) {
2018 if (nd->nd_flag & ND_NFSV4) {
2019 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2020 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2021 if (error)
2022 goto nfsmout;
2023 }
2024 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2025 if (error)
2026 goto nfsmout;
2027 }
2028 if (nd->nd_flag & ND_NFSV3)
2029 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2030 if (!error && nd->nd_repstat)
2031 error = nd->nd_repstat;
2032 nfsmout:
2033 m_freem(nd->nd_mrep);
2034 return (error);
2035 }
2036
2037 /*
2038 * nfs file create call
2039 * Mostly just call the approriate routine. (I separated out v4, so that
2040 * error recovery wouldn't be as difficult.)
2041 */
2042 int
2043 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2044 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
2045 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
2046 int *attrflagp, int *dattrflagp, void *dstuff)
2047 {
2048 int error = 0, newone, expireret = 0, retrycnt, unlocked;
2049 struct nfsclowner *owp;
2050 struct nfscldeleg *dp;
2051 struct nfsmount *nmp = VFSTONFS(dvp->v_mount);
2052 u_int32_t clidrev;
2053
2054 if (NFSHASNFSV4(nmp)) {
2055 retrycnt = 0;
2056 do {
2057 dp = NULL;
2058 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
2059 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
2060 NULL, 1);
2061 if (error)
2062 return (error);
2063 if (nmp->nm_clp != NULL)
2064 clidrev = nmp->nm_clp->nfsc_clientidrev;
2065 else
2066 clidrev = 0;
2067 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 ||
2068 nfs_numnfscbd == 0 || retrycnt > 0)
2069 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf,
2070 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp,
2071 attrflagp, dattrflagp, dstuff, &unlocked);
2072 else
2073 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap,
2074 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp,
2075 attrflagp, dattrflagp, dstuff, &unlocked);
2076 /*
2077 * There is no need to invalidate cached attributes here,
2078 * since new post-delegation issue attributes are always
2079 * returned by nfsrpc_createv4() and these will update the
2080 * attribute cache.
2081 */
2082 if (dp != NULL)
2083 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
2084 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
2085 nfscl_ownerrelease(nmp, owp, error, newone, unlocked);
2086 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
2087 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
2088 error == NFSERR_BADSESSION) {
2089 (void) nfs_catnap(PZERO, error, "nfs_open");
2090 } else if ((error == NFSERR_EXPIRED ||
2091 error == NFSERR_BADSTATEID) && clidrev != 0) {
2092 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
2093 retrycnt++;
2094 }
2095 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
2096 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
2097 error == NFSERR_BADSESSION ||
2098 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
2099 expireret == 0 && clidrev != 0 && retrycnt < 4));
2100 if (error && retrycnt >= 4)
2101 error = EIO;
2102 } else {
2103 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
2104 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
2105 dstuff);
2106 }
2107 return (error);
2108 }
2109
2110 /*
2111 * The create rpc for v2 and 3.
2112 */
2113 static int
2114 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2115 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
2116 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
2117 int *attrflagp, int *dattrflagp, void *dstuff)
2118 {
2119 u_int32_t *tl;
2120 int error = 0;
2121 struct nfsrv_descript nfsd, *nd = &nfsd;
2122
2123 *nfhpp = NULL;
2124 *attrflagp = 0;
2125 *dattrflagp = 0;
2126 if (namelen > NFS_MAXNAMLEN)
2127 return (ENAMETOOLONG);
2128 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
2129 (void) nfsm_strtom(nd, name, namelen);
2130 if (nd->nd_flag & ND_NFSV3) {
2131 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2132 if (fmode & O_EXCL) {
2133 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
2134 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2135 *tl++ = cverf.lval[0];
2136 *tl = cverf.lval[1];
2137 } else {
2138 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2139 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2140 }
2141 } else {
2142 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
2143 }
2144 error = nfscl_request(nd, dvp, p, cred, dstuff);
2145 if (error)
2146 return (error);
2147 if (nd->nd_repstat == 0) {
2148 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2149 if (error)
2150 goto nfsmout;
2151 }
2152 if (nd->nd_flag & ND_NFSV3)
2153 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2154 if (nd->nd_repstat != 0 && error == 0)
2155 error = nd->nd_repstat;
2156 nfsmout:
2157 m_freem(nd->nd_mrep);
2158 return (error);
2159 }
2160
2161 static int
2162 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2163 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
2164 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2165 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2166 int *dattrflagp, void *dstuff, int *unlockedp)
2167 {
2168 u_int32_t *tl;
2169 int error = 0, deleg, newone, ret, acesize, limitby;
2170 struct nfsrv_descript nfsd, *nd = &nfsd;
2171 struct nfsclopen *op;
2172 struct nfscldeleg *dp = NULL;
2173 struct nfsnode *np;
2174 struct nfsfh *nfhp;
2175 nfsattrbit_t attrbits;
2176 nfsv4stateid_t stateid;
2177 u_int32_t rflags;
2178 struct nfsmount *nmp;
2179 struct nfsclsession *tsep;
2180
2181 nmp = VFSTONFS(dvp->v_mount);
2182 np = VTONFS(dvp);
2183 *unlockedp = 0;
2184 *nfhpp = NULL;
2185 *dpp = NULL;
2186 *attrflagp = 0;
2187 *dattrflagp = 0;
2188 if (namelen > NFS_MAXNAMLEN)
2189 return (ENAMETOOLONG);
2190 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
2191 /*
2192 * For V4, this is actually an Open op.
2193 */
2194 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2195 *tl++ = txdr_unsigned(owp->nfsow_seqid);
2196 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
2197 NFSV4OPEN_ACCESSREAD);
2198 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
2199 tsep = nfsmnt_mdssession(nmp);
2200 *tl++ = tsep->nfsess_clientid.lval[0];
2201 *tl = tsep->nfsess_clientid.lval[1];
2202 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
2203 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2204 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
2205 if (fmode & O_EXCL) {
2206 if (NFSHASNFSV4N(nmp)) {
2207 if (NFSHASSESSPERSIST(nmp)) {
2208 /* Use GUARDED for persistent sessions. */
2209 *tl = txdr_unsigned(NFSCREATE_GUARDED);
2210 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2211 } else {
2212 /* Otherwise, use EXCLUSIVE4_1. */
2213 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
2214 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2215 *tl++ = cverf.lval[0];
2216 *tl = cverf.lval[1];
2217 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2218 }
2219 } else {
2220 /* NFSv4.0 */
2221 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
2222 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2223 *tl++ = cverf.lval[0];
2224 *tl = cverf.lval[1];
2225 }
2226 } else {
2227 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2228 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2229 }
2230 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2231 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
2232 (void) nfsm_strtom(nd, name, namelen);
2233 /* Get the new file's handle and attributes. */
2234 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2235 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2236 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2237 NFSGETATTR_ATTRBIT(&attrbits);
2238 (void) nfsrv_putattrbit(nd, &attrbits);
2239 /* Get the directory's post-op attributes. */
2240 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2241 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2242 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
2243 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2244 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2245 (void) nfsrv_putattrbit(nd, &attrbits);
2246 error = nfscl_request(nd, dvp, p, cred, dstuff);
2247 if (error)
2248 return (error);
2249 NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
2250 if (nd->nd_repstat == 0) {
2251 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2252 6 * NFSX_UNSIGNED);
2253 stateid.seqid = *tl++;
2254 stateid.other[0] = *tl++;
2255 stateid.other[1] = *tl++;
2256 stateid.other[2] = *tl;
2257 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
2258 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2259 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2260 deleg = fxdr_unsigned(int, *tl);
2261 if (deleg == NFSV4OPEN_DELEGATEREAD ||
2262 deleg == NFSV4OPEN_DELEGATEWRITE) {
2263 if (!(owp->nfsow_clp->nfsc_flags &
2264 NFSCLFLAGS_FIRSTDELEG))
2265 owp->nfsow_clp->nfsc_flags |=
2266 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
2267 dp = malloc(
2268 sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
2269 M_NFSCLDELEG, M_WAITOK);
2270 LIST_INIT(&dp->nfsdl_owner);
2271 LIST_INIT(&dp->nfsdl_lock);
2272 dp->nfsdl_clp = owp->nfsow_clp;
2273 newnfs_copyincred(cred, &dp->nfsdl_cred);
2274 nfscl_lockinit(&dp->nfsdl_rwlock);
2275 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2276 NFSX_UNSIGNED);
2277 dp->nfsdl_stateid.seqid = *tl++;
2278 dp->nfsdl_stateid.other[0] = *tl++;
2279 dp->nfsdl_stateid.other[1] = *tl++;
2280 dp->nfsdl_stateid.other[2] = *tl++;
2281 ret = fxdr_unsigned(int, *tl);
2282 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
2283 dp->nfsdl_flags = NFSCLDL_WRITE;
2284 /*
2285 * Indicates how much the file can grow.
2286 */
2287 NFSM_DISSECT(tl, u_int32_t *,
2288 3 * NFSX_UNSIGNED);
2289 limitby = fxdr_unsigned(int, *tl++);
2290 switch (limitby) {
2291 case NFSV4OPEN_LIMITSIZE:
2292 dp->nfsdl_sizelimit = fxdr_hyper(tl);
2293 break;
2294 case NFSV4OPEN_LIMITBLOCKS:
2295 dp->nfsdl_sizelimit =
2296 fxdr_unsigned(u_int64_t, *tl++);
2297 dp->nfsdl_sizelimit *=
2298 fxdr_unsigned(u_int64_t, *tl);
2299 break;
2300 default:
2301 error = NFSERR_BADXDR;
2302 goto nfsmout;
2303 }
2304 } else {
2305 dp->nfsdl_flags = NFSCLDL_READ;
2306 }
2307 if (ret)
2308 dp->nfsdl_flags |= NFSCLDL_RECALL;
2309 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
2310 &acesize, p);
2311 if (error)
2312 goto nfsmout;
2313 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
2314 error = NFSERR_BADXDR;
2315 goto nfsmout;
2316 }
2317 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2318 if (error)
2319 goto nfsmout;
2320 /* Get rid of the PutFH and Getattr status values. */
2321 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2322 /* Load the directory attributes. */
2323 error = nfsm_loadattr(nd, dnap);
2324 if (error)
2325 goto nfsmout;
2326 *dattrflagp = 1;
2327 if (dp != NULL && *attrflagp) {
2328 dp->nfsdl_change = nnap->na_filerev;
2329 dp->nfsdl_modtime = nnap->na_mtime;
2330 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
2331 }
2332 /*
2333 * We can now complete the Open state.
2334 */
2335 nfhp = *nfhpp;
2336 if (dp != NULL) {
2337 dp->nfsdl_fhlen = nfhp->nfh_len;
2338 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
2339 }
2340 /*
2341 * Get an Open structure that will be
2342 * attached to the OpenOwner, acquired already.
2343 */
2344 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
2345 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
2346 cred, p, NULL, &op, &newone, NULL, 0);
2347 if (error)
2348 goto nfsmout;
2349 op->nfso_stateid = stateid;
2350 newnfs_copyincred(cred, &op->nfso_cred);
2351 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
2352 do {
2353 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
2354 nfhp->nfh_len, op, cred, p);
2355 if (ret == NFSERR_DELAY)
2356 (void) nfs_catnap(PZERO, ret, "nfs_create");
2357 } while (ret == NFSERR_DELAY);
2358 error = ret;
2359 }
2360
2361 /*
2362 * If the server is handing out delegations, but we didn't
2363 * get one because an OpenConfirm was required, try the
2364 * Open again, to get a delegation. This is a harmless no-op,
2365 * from a server's point of view.
2366 */
2367 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
2368 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
2369 !error && dp == NULL) {
2370 do {
2371 ret = nfsrpc_openrpc(VFSTONFS(dvp->v_mount), dvp,
2372 np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
2373 nfhp->nfh_fh, nfhp->nfh_len,
2374 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
2375 name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
2376 if (ret == NFSERR_DELAY)
2377 (void) nfs_catnap(PZERO, ret, "nfs_crt2");
2378 } while (ret == NFSERR_DELAY);
2379 if (ret) {
2380 if (dp != NULL) {
2381 free(dp, M_NFSCLDELEG);
2382 dp = NULL;
2383 }
2384 if (ret == NFSERR_STALECLIENTID ||
2385 ret == NFSERR_STALEDONTRECOVER ||
2386 ret == NFSERR_BADSESSION)
2387 error = ret;
2388 }
2389 }
2390 nfscl_openrelease(nmp, op, error, newone);
2391 *unlockedp = 1;
2392 }
2393 if (nd->nd_repstat != 0 && error == 0)
2394 error = nd->nd_repstat;
2395 if (error == NFSERR_STALECLIENTID)
2396 nfscl_initiate_recovery(owp->nfsow_clp);
2397 nfsmout:
2398 if (!error)
2399 *dpp = dp;
2400 else if (dp != NULL)
2401 free(dp, M_NFSCLDELEG);
2402 m_freem(nd->nd_mrep);
2403 return (error);
2404 }
2405
2406 /*
2407 * Nfs remove rpc
2408 */
2409 int
2410 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2411 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2412 void *dstuff)
2413 {
2414 u_int32_t *tl;
2415 struct nfsrv_descript nfsd, *nd = &nfsd;
2416 struct nfsnode *np;
2417 struct nfsmount *nmp;
2418 nfsv4stateid_t dstateid;
2419 int error, ret = 0, i;
2420
2421 *dattrflagp = 0;
2422 if (namelen > NFS_MAXNAMLEN)
2423 return (ENAMETOOLONG);
2424 nmp = VFSTONFS(dvp->v_mount);
2425 tryagain:
2426 if (NFSHASNFSV4(nmp) && ret == 0) {
2427 ret = nfscl_removedeleg(vp, p, &dstateid);
2428 if (ret == 1) {
2429 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2430 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2431 NFSX_UNSIGNED);
2432 if (NFSHASNFSV4N(nmp))
2433 *tl++ = 0;
2434 else
2435 *tl++ = dstateid.seqid;
2436 *tl++ = dstateid.other[0];
2437 *tl++ = dstateid.other[1];
2438 *tl++ = dstateid.other[2];
2439 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2440 np = VTONFS(dvp);
2441 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2442 np->n_fhp->nfh_len, 0);
2443 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2444 *tl = txdr_unsigned(NFSV4OP_REMOVE);
2445 }
2446 } else {
2447 ret = 0;
2448 }
2449 if (ret == 0)
2450 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2451 (void) nfsm_strtom(nd, name, namelen);
2452 error = nfscl_request(nd, dvp, p, cred, dstuff);
2453 if (error)
2454 return (error);
2455 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2456 /* For NFSv4, parse out any Delereturn replies. */
2457 if (ret > 0 && nd->nd_repstat != 0 &&
2458 (nd->nd_flag & ND_NOMOREDATA)) {
2459 /*
2460 * If the Delegreturn failed, try again without
2461 * it. The server will Recall, as required.
2462 */
2463 m_freem(nd->nd_mrep);
2464 goto tryagain;
2465 }
2466 for (i = 0; i < (ret * 2); i++) {
2467 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2468 ND_NFSV4) {
2469 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2470 if (*(tl + 1))
2471 nd->nd_flag |= ND_NOMOREDATA;
2472 }
2473 }
2474 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2475 }
2476 if (nd->nd_repstat && !error)
2477 error = nd->nd_repstat;
2478 nfsmout:
2479 m_freem(nd->nd_mrep);
2480 return (error);
2481 }
2482
2483 /*
2484 * Do an nfs rename rpc.
2485 */
2486 int
2487 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2488 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2489 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2490 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2491 {
2492 u_int32_t *tl;
2493 struct nfsrv_descript nfsd, *nd = &nfsd;
2494 struct nfsmount *nmp;
2495 struct nfsnode *np;
2496 nfsattrbit_t attrbits;
2497 nfsv4stateid_t fdstateid, tdstateid;
2498 int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2499
2500 *fattrflagp = 0;
2501 *tattrflagp = 0;
2502 nmp = VFSTONFS(fdvp->v_mount);
2503 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2504 return (ENAMETOOLONG);
2505 tryagain:
2506 if (NFSHASNFSV4(nmp) && ret == 0) {
2507 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2508 &tdstateid, &gottd, p);
2509 if (gotfd && gottd) {
2510 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2511 } else if (gotfd) {
2512 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2513 } else if (gottd) {
2514 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2515 }
2516 if (gotfd) {
2517 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2518 if (NFSHASNFSV4N(nmp))
2519 *tl++ = 0;
2520 else
2521 *tl++ = fdstateid.seqid;
2522 *tl++ = fdstateid.other[0];
2523 *tl++ = fdstateid.other[1];
2524 *tl = fdstateid.other[2];
2525 if (gottd) {
2526 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2527 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2528 np = VTONFS(tvp);
2529 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2530 np->n_fhp->nfh_len, 0);
2531 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2532 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2533 }
2534 }
2535 if (gottd) {
2536 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2537 if (NFSHASNFSV4N(nmp))
2538 *tl++ = 0;
2539 else
2540 *tl++ = tdstateid.seqid;
2541 *tl++ = tdstateid.other[0];
2542 *tl++ = tdstateid.other[1];
2543 *tl = tdstateid.other[2];
2544 }
2545 if (ret > 0) {
2546 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2547 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2548 np = VTONFS(fdvp);
2549 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2550 np->n_fhp->nfh_len, 0);
2551 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2552 *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2553 }
2554 } else {
2555 ret = 0;
2556 }
2557 if (ret == 0)
2558 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2559 if (nd->nd_flag & ND_NFSV4) {
2560 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2561 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2562 NFSWCCATTR_ATTRBIT(&attrbits);
2563 (void) nfsrv_putattrbit(nd, &attrbits);
2564 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2565 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2566 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2567 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2568 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2569 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2570 (void) nfsrv_putattrbit(nd, &attrbits);
2571 nd->nd_flag |= ND_V4WCCATTR;
2572 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2573 *tl = txdr_unsigned(NFSV4OP_RENAME);
2574 }
2575 (void) nfsm_strtom(nd, fnameptr, fnamelen);
2576 if (!(nd->nd_flag & ND_NFSV4))
2577 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2578 VTONFS(tdvp)->n_fhp->nfh_len, 0);
2579 (void) nfsm_strtom(nd, tnameptr, tnamelen);
2580 error = nfscl_request(nd, fdvp, p, cred, fstuff);
2581 if (error)
2582 return (error);
2583 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2584 /* For NFSv4, parse out any Delereturn replies. */
2585 if (ret > 0 && nd->nd_repstat != 0 &&
2586 (nd->nd_flag & ND_NOMOREDATA)) {
2587 /*
2588 * If the Delegreturn failed, try again without
2589 * it. The server will Recall, as required.
2590 */
2591 m_freem(nd->nd_mrep);
2592 goto tryagain;
2593 }
2594 for (i = 0; i < (ret * 2); i++) {
2595 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2596 ND_NFSV4) {
2597 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2598 if (*(tl + 1)) {
2599 if (i == 0 && ret > 1) {
2600 /*
2601 * If the Delegreturn failed, try again
2602 * without it. The server will Recall, as
2603 * required.
2604 * If ret > 1, the first iteration of this
2605 * loop is the second DelegReturn result.
2606 */
2607 m_freem(nd->nd_mrep);
2608 goto tryagain;
2609 } else {
2610 nd->nd_flag |= ND_NOMOREDATA;
2611 }
2612 }
2613 }
2614 }
2615 /* Now, the first wcc attribute reply. */
2616 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2617 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2618 if (*(tl + 1))
2619 nd->nd_flag |= ND_NOMOREDATA;
2620 }
2621 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2622 fstuff);
2623 /* and the second wcc attribute reply. */
2624 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2625 !error) {
2626 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2627 if (*(tl + 1))
2628 nd->nd_flag |= ND_NOMOREDATA;
2629 }
2630 if (!error)
2631 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2632 NULL, tstuff);
2633 }
2634 if (nd->nd_repstat && !error)
2635 error = nd->nd_repstat;
2636 nfsmout:
2637 m_freem(nd->nd_mrep);
2638 return (error);
2639 }
2640
2641 /*
2642 * nfs hard link create rpc
2643 */
2644 int
2645 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2646 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2647 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2648 {
2649 u_int32_t *tl;
2650 struct nfsrv_descript nfsd, *nd = &nfsd;
2651 nfsattrbit_t attrbits;
2652 int error = 0;
2653
2654 *attrflagp = 0;
2655 *dattrflagp = 0;
2656 if (namelen > NFS_MAXNAMLEN)
2657 return (ENAMETOOLONG);
2658 NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2659 if (nd->nd_flag & ND_NFSV4) {
2660 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2661 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2662 }
2663 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2664 VTONFS(dvp)->n_fhp->nfh_len, 0);
2665 if (nd->nd_flag & ND_NFSV4) {
2666 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2667 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2668 NFSWCCATTR_ATTRBIT(&attrbits);
2669 (void) nfsrv_putattrbit(nd, &attrbits);
2670 nd->nd_flag |= ND_V4WCCATTR;
2671 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2672 *tl = txdr_unsigned(NFSV4OP_LINK);
2673 }
2674 (void) nfsm_strtom(nd, name, namelen);
2675 error = nfscl_request(nd, vp, p, cred, dstuff);
2676 if (error)
2677 return (error);
2678 if (nd->nd_flag & ND_NFSV3) {
2679 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2680 if (!error)
2681 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2682 NULL, dstuff);
2683 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2684 /*
2685 * First, parse out the PutFH and Getattr result.
2686 */
2687 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2688 if (!(*(tl + 1)))
2689 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2690 if (*(tl + 1))
2691 nd->nd_flag |= ND_NOMOREDATA;
2692 /*
2693 * Get the pre-op attributes.
2694 */
2695 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2696 }
2697 if (nd->nd_repstat && !error)
2698 error = nd->nd_repstat;
2699 nfsmout:
2700 m_freem(nd->nd_mrep);
2701 return (error);
2702 }
2703
2704 /*
2705 * nfs symbolic link create rpc
2706 */
2707 int
2708 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target,
2709 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2710 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2711 int *dattrflagp, void *dstuff)
2712 {
2713 u_int32_t *tl;
2714 struct nfsrv_descript nfsd, *nd = &nfsd;
2715 struct nfsmount *nmp;
2716 int slen, error = 0;
2717
2718 *nfhpp = NULL;
2719 *attrflagp = 0;
2720 *dattrflagp = 0;
2721 nmp = VFSTONFS(dvp->v_mount);
2722 slen = strlen(target);
2723 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2724 return (ENAMETOOLONG);
2725 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2726 if (nd->nd_flag & ND_NFSV4) {
2727 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2728 *tl = txdr_unsigned(NFLNK);
2729 (void) nfsm_strtom(nd, target, slen);
2730 }
2731 (void) nfsm_strtom(nd, name, namelen);
2732 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2733 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2734 if (!(nd->nd_flag & ND_NFSV4))
2735 (void) nfsm_strtom(nd, target, slen);
2736 if (nd->nd_flag & ND_NFSV2)
2737 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2738 error = nfscl_request(nd, dvp, p, cred, dstuff);
2739 if (error)
2740 return (error);
2741 if (nd->nd_flag & ND_NFSV4)
2742 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2743 if ((nd->nd_flag & ND_NFSV3) && !error) {
2744 if (!nd->nd_repstat)
2745 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2746 if (!error)
2747 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2748 NULL, dstuff);
2749 }
2750 if (nd->nd_repstat && !error)
2751 error = nd->nd_repstat;
2752 m_freem(nd->nd_mrep);
2753 /*
2754 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2755 * Only do this if vfs.nfs.ignore_eexist is set.
2756 * Never do this for NFSv4.1 or later minor versions, since sessions
2757 * should guarantee "exactly once" RPC semantics.
2758 */
2759 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2760 nmp->nm_minorvers == 0))
2761 error = 0;
2762 return (error);
2763 }
2764
2765 /*
2766 * nfs make dir rpc
2767 */
2768 int
2769 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2770 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2771 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2772 int *dattrflagp, void *dstuff)
2773 {
2774 u_int32_t *tl;
2775 struct nfsrv_descript nfsd, *nd = &nfsd;
2776 nfsattrbit_t attrbits;
2777 int error = 0;
2778 struct nfsfh *fhp;
2779 struct nfsmount *nmp;
2780
2781 *nfhpp = NULL;
2782 *attrflagp = 0;
2783 *dattrflagp = 0;
2784 nmp = VFSTONFS(dvp->v_mount);
2785 fhp = VTONFS(dvp)->n_fhp;
2786 if (namelen > NFS_MAXNAMLEN)
2787 return (ENAMETOOLONG);
2788 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2789 if (nd->nd_flag & ND_NFSV4) {
2790 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2791 *tl = txdr_unsigned(NFDIR);
2792 }
2793 (void) nfsm_strtom(nd, name, namelen);
2794 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2795 if (nd->nd_flag & ND_NFSV4) {
2796 NFSGETATTR_ATTRBIT(&attrbits);
2797 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2798 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2799 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2800 (void) nfsrv_putattrbit(nd, &attrbits);
2801 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2802 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2803 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0);
2804 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2805 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2806 (void) nfsrv_putattrbit(nd, &attrbits);
2807 }
2808 error = nfscl_request(nd, dvp, p, cred, dstuff);
2809 if (error)
2810 return (error);
2811 if (nd->nd_flag & ND_NFSV4)
2812 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2813 if (!nd->nd_repstat && !error) {
2814 if (nd->nd_flag & ND_NFSV4) {
2815 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2816 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2817 }
2818 if (!error)
2819 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2820 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) {
2821 /* Get rid of the PutFH and Getattr status values. */
2822 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2823 /* Load the directory attributes. */
2824 error = nfsm_loadattr(nd, dnap);
2825 if (error == 0)
2826 *dattrflagp = 1;
2827 }
2828 }
2829 if ((nd->nd_flag & ND_NFSV3) && !error)
2830 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2831 if (nd->nd_repstat && !error)
2832 error = nd->nd_repstat;
2833 nfsmout:
2834 m_freem(nd->nd_mrep);
2835 /*
2836 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2837 * Only do this if vfs.nfs.ignore_eexist is set.
2838 * Never do this for NFSv4.1 or later minor versions, since sessions
2839 * should guarantee "exactly once" RPC semantics.
2840 */
2841 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2842 nmp->nm_minorvers == 0))
2843 error = 0;
2844 return (error);
2845 }
2846
2847 /*
2848 * nfs remove directory call
2849 */
2850 int
2851 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2852 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2853 {
2854 struct nfsrv_descript nfsd, *nd = &nfsd;
2855 int error = 0;
2856
2857 *dattrflagp = 0;
2858 if (namelen > NFS_MAXNAMLEN)
2859 return (ENAMETOOLONG);
2860 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2861 (void) nfsm_strtom(nd, name, namelen);
2862 error = nfscl_request(nd, dvp, p, cred, dstuff);
2863 if (error)
2864 return (error);
2865 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2866 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2867 if (nd->nd_repstat && !error)
2868 error = nd->nd_repstat;
2869 m_freem(nd->nd_mrep);
2870 /*
2871 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2872 */
2873 if (error == ENOENT)
2874 error = 0;
2875 return (error);
2876 }
2877
2878 /*
2879 * Readdir rpc.
2880 * Always returns with either uio_resid unchanged, if you are at the
2881 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2882 * filled in.
2883 * I felt this would allow caching of directory blocks more easily
2884 * than returning a pertially filled block.
2885 * Directory offset cookies:
2886 * Oh my, what to do with them...
2887 * I can think of three ways to deal with them:
2888 * 1 - have the layer above these RPCs maintain a map between logical
2889 * directory byte offsets and the NFS directory offset cookies
2890 * 2 - pass the opaque directory offset cookies up into userland
2891 * and let the libc functions deal with them, via the system call
2892 * 3 - return them to userland in the "struct dirent", so future versions
2893 * of libc can use them and do whatever is necessary to make things work
2894 * above these rpc calls, in the meantime
2895 * For now, I do #3 by "hiding" the directory offset cookies after the
2896 * d_name field in struct dirent. This is space inside d_reclen that
2897 * will be ignored by anything that doesn't know about them.
2898 * The directory offset cookies are filled in as the last 8 bytes of
2899 * each directory entry, after d_name. Someday, the userland libc
2900 * functions may be able to use these. In the meantime, it satisfies
2901 * OpenBSD's requirements for cookies being returned.
2902 * If expects the directory offset cookie for the read to be in uio_offset
2903 * and returns the one for the next entry after this directory block in
2904 * there, as well.
2905 */
2906 int
2907 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2908 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2909 int *eofp, void *stuff)
2910 {
2911 int len, left;
2912 struct dirent *dp = NULL;
2913 u_int32_t *tl;
2914 nfsquad_t cookie, ncookie;
2915 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
2916 struct nfsnode *dnp = VTONFS(vp);
2917 struct nfsvattr nfsva;
2918 struct nfsrv_descript nfsd, *nd = &nfsd;
2919 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2920 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2921 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX;
2922 char *cp;
2923 nfsattrbit_t attrbits, dattrbits;
2924 u_int32_t rderr, *tl2 = NULL;
2925 size_t tresid;
2926
2927 KASSERT(uiop->uio_iovcnt == 1 &&
2928 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0,
2929 ("nfs readdirrpc bad uio"));
2930 ncookie.lval[0] = ncookie.lval[1] = 0;
2931 /*
2932 * There is no point in reading a lot more than uio_resid, however
2933 * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2934 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2935 * will never make readsize > nm_readdirsize.
2936 */
2937 readsize = nmp->nm_readdirsize;
2938 if (readsize > uiop->uio_resid)
2939 readsize = uiop->uio_resid + DIRBLKSIZ;
2940
2941 *attrflagp = 0;
2942 if (eofp)
2943 *eofp = 0;
2944 tresid = uiop->uio_resid;
2945 cookie.lval[0] = cookiep->nfsuquad[0];
2946 cookie.lval[1] = cookiep->nfsuquad[1];
2947 nd->nd_mrep = NULL;
2948
2949 /*
2950 * For NFSv4, first create the "." and ".." entries.
2951 */
2952 if (NFSHASNFSV4(nmp)) {
2953 reqsize = 6 * NFSX_UNSIGNED;
2954 NFSGETATTR_ATTRBIT(&dattrbits);
2955 NFSZERO_ATTRBIT(&attrbits);
2956 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2957 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2958 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2959 NFSATTRBIT_MOUNTEDONFILEID)) {
2960 NFSSETBIT_ATTRBIT(&attrbits,
2961 NFSATTRBIT_MOUNTEDONFILEID);
2962 gotmnton = 1;
2963 } else {
2964 /*
2965 * Must fake it. Use the fileno, except when the
2966 * fsid is != to that of the directory. For that
2967 * case, generate a fake fileno that is not the same.
2968 */
2969 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2970 gotmnton = 0;
2971 }
2972
2973 /*
2974 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2975 */
2976 if (uiop->uio_offset == 0) {
2977 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2978 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2979 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2980 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2981 (void) nfsrv_putattrbit(nd, &attrbits);
2982 error = nfscl_request(nd, vp, p, cred, stuff);
2983 if (error)
2984 return (error);
2985 dotfileid = 0; /* Fake out the compiler. */
2986 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
2987 error = nfsm_loadattr(nd, &nfsva);
2988 if (error != 0)
2989 goto nfsmout;
2990 dotfileid = nfsva.na_fileid;
2991 }
2992 if (nd->nd_repstat == 0) {
2993 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2994 len = fxdr_unsigned(int, *(tl + 4));
2995 if (len > 0 && len <= NFSX_V4FHMAX)
2996 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2997 else
2998 error = EPERM;
2999 if (!error) {
3000 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3001 nfsva.na_mntonfileno = UINT64_MAX;
3002 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3003 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3004 NULL, NULL, NULL, p, cred);
3005 if (error) {
3006 dotdotfileid = dotfileid;
3007 } else if (gotmnton) {
3008 if (nfsva.na_mntonfileno != UINT64_MAX)
3009 dotdotfileid = nfsva.na_mntonfileno;
3010 else
3011 dotdotfileid = nfsva.na_fileid;
3012 } else if (nfsva.na_filesid[0] ==
3013 dnp->n_vattr.na_filesid[0] &&
3014 nfsva.na_filesid[1] ==
3015 dnp->n_vattr.na_filesid[1]) {
3016 dotdotfileid = nfsva.na_fileid;
3017 } else {
3018 do {
3019 fakefileno--;
3020 } while (fakefileno ==
3021 nfsva.na_fileid);
3022 dotdotfileid = fakefileno;
3023 }
3024 }
3025 } else if (nd->nd_repstat == NFSERR_NOENT) {
3026 /*
3027 * Lookupp returns NFSERR_NOENT when we are
3028 * at the root, so just use the current dir.
3029 */
3030 nd->nd_repstat = 0;
3031 dotdotfileid = dotfileid;
3032 } else {
3033 error = nd->nd_repstat;
3034 }
3035 m_freem(nd->nd_mrep);
3036 if (error)
3037 return (error);
3038 nd->nd_mrep = NULL;
3039 dp = (struct dirent *)uiop->uio_iov->iov_base;
3040 dp->d_pad0 = dp->d_pad1 = 0;
3041 dp->d_off = 0;
3042 dp->d_type = DT_DIR;
3043 dp->d_fileno = dotfileid;
3044 dp->d_namlen = 1;
3045 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */
3046 dp->d_name[0] = '.';
3047 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
3048 /*
3049 * Just make these offset cookie 0.
3050 */
3051 tl = (u_int32_t *)&dp->d_name[8];
3052 *tl++ = 0;
3053 *tl = 0;
3054 blksiz += dp->d_reclen;
3055 uiop->uio_resid -= dp->d_reclen;
3056 uiop->uio_offset += dp->d_reclen;
3057 uiop->uio_iov->iov_base =
3058 (char *)uiop->uio_iov->iov_base + dp->d_reclen;
3059 uiop->uio_iov->iov_len -= dp->d_reclen;
3060 dp = (struct dirent *)uiop->uio_iov->iov_base;
3061 dp->d_pad0 = dp->d_pad1 = 0;
3062 dp->d_off = 0;
3063 dp->d_type = DT_DIR;
3064 dp->d_fileno = dotdotfileid;
3065 dp->d_namlen = 2;
3066 *((uint64_t *)dp->d_name) = 0;
3067 dp->d_name[0] = '.';
3068 dp->d_name[1] = '.';
3069 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
3070 /*
3071 * Just make these offset cookie 0.
3072 */
3073 tl = (u_int32_t *)&dp->d_name[8];
3074 *tl++ = 0;
3075 *tl = 0;
3076 blksiz += dp->d_reclen;
3077 uiop->uio_resid -= dp->d_reclen;
3078 uiop->uio_offset += dp->d_reclen;
3079 uiop->uio_iov->iov_base =
3080 (char *)uiop->uio_iov->iov_base + dp->d_reclen;
3081 uiop->uio_iov->iov_len -= dp->d_reclen;
3082 }
3083 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
3084 } else {
3085 reqsize = 5 * NFSX_UNSIGNED;
3086 }
3087
3088 /*
3089 * Loop around doing readdir rpc's of size readsize.
3090 * The stopping criteria is EOF or buffer full.
3091 */
3092 while (more_dirs && bigenough) {
3093 *attrflagp = 0;
3094 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
3095 if (nd->nd_flag & ND_NFSV2) {
3096 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3097 *tl++ = cookie.lval[1];
3098 *tl = txdr_unsigned(readsize);
3099 } else {
3100 NFSM_BUILD(tl, u_int32_t *, reqsize);
3101 *tl++ = cookie.lval[0];
3102 *tl++ = cookie.lval[1];
3103 if (cookie.qval == 0) {
3104 *tl++ = 0;
3105 *tl++ = 0;
3106 } else {
3107 NFSLOCKNODE(dnp);
3108 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3109 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3110 NFSUNLOCKNODE(dnp);
3111 }
3112 if (nd->nd_flag & ND_NFSV4) {
3113 *tl++ = txdr_unsigned(readsize);
3114 *tl = txdr_unsigned(readsize);
3115 (void) nfsrv_putattrbit(nd, &attrbits);
3116 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3117 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3118 (void) nfsrv_putattrbit(nd, &dattrbits);
3119 } else {
3120 *tl = txdr_unsigned(readsize);
3121 }
3122 }
3123 error = nfscl_request(nd, vp, p, cred, stuff);
3124 if (error)
3125 return (error);
3126 if (!(nd->nd_flag & ND_NFSV2)) {
3127 if (nd->nd_flag & ND_NFSV3)
3128 error = nfscl_postop_attr(nd, nap, attrflagp,
3129 stuff);
3130 if (!nd->nd_repstat && !error) {
3131 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
3132 NFSLOCKNODE(dnp);
3133 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3134 dnp->n_cookieverf.nfsuquad[1] = *tl;
3135 NFSUNLOCKNODE(dnp);
3136 }
3137 }
3138 if (nd->nd_repstat || error) {
3139 if (!error)
3140 error = nd->nd_repstat;
3141 goto nfsmout;
3142 }
3143 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3144 more_dirs = fxdr_unsigned(int, *tl);
3145 if (!more_dirs)
3146 tryformoredirs = 0;
3147
3148 /* loop through the dir entries, doctoring them to 4bsd form */
3149 while (more_dirs && bigenough) {
3150 if (nd->nd_flag & ND_NFSV4) {
3151 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3152 ncookie.lval[0] = *tl++;
3153 ncookie.lval[1] = *tl++;
3154 len = fxdr_unsigned(int, *tl);
3155 } else if (nd->nd_flag & ND_NFSV3) {
3156 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3157 nfsva.na_fileid = fxdr_hyper(tl);
3158 tl += 2;
3159 len = fxdr_unsigned(int, *tl);
3160 } else {
3161 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3162 nfsva.na_fileid = fxdr_unsigned(uint64_t,
3163 *tl++);
3164 len = fxdr_unsigned(int, *tl);
3165 }
3166 if (len <= 0 || len > NFS_MAXNAMLEN) {
3167 error = EBADRPC;
3168 goto nfsmout;
3169 }
3170 tlen = roundup2(len, 8);
3171 if (tlen == len)
3172 tlen += 8; /* To ensure null termination. */
3173 left = DIRBLKSIZ - blksiz;
3174 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) {
3175 NFSBZERO(uiop->uio_iov->iov_base, left);
3176 dp->d_reclen += left;
3177 uiop->uio_iov->iov_base =
3178 (char *)uiop->uio_iov->iov_base + left;
3179 uiop->uio_iov->iov_len -= left;
3180 uiop->uio_resid -= left;
3181 uiop->uio_offset += left;
3182 blksiz = 0;
3183 }
3184 if (_GENERIC_DIRLEN(len) + NFSX_HYPER >
3185 uiop->uio_resid)
3186 bigenough = 0;
3187 if (bigenough) {
3188 dp = (struct dirent *)uiop->uio_iov->iov_base;
3189 dp->d_pad0 = dp->d_pad1 = 0;
3190 dp->d_off = 0;
3191 dp->d_namlen = len;
3192 dp->d_reclen = _GENERIC_DIRLEN(len) +
3193 NFSX_HYPER;
3194 dp->d_type = DT_UNKNOWN;
3195 blksiz += dp->d_reclen;
3196 if (blksiz == DIRBLKSIZ)
3197 blksiz = 0;
3198 uiop->uio_resid -= DIRHDSIZ;
3199 uiop->uio_offset += DIRHDSIZ;
3200 uiop->uio_iov->iov_base =
3201 (char *)uiop->uio_iov->iov_base + DIRHDSIZ;
3202 uiop->uio_iov->iov_len -= DIRHDSIZ;
3203 error = nfsm_mbufuio(nd, uiop, len);
3204 if (error)
3205 goto nfsmout;
3206 cp = uiop->uio_iov->iov_base;
3207 tlen -= len;
3208 NFSBZERO(cp, tlen);
3209 cp += tlen; /* points to cookie storage */
3210 tl2 = (u_int32_t *)cp;
3211 uiop->uio_iov->iov_base =
3212 (char *)uiop->uio_iov->iov_base + tlen +
3213 NFSX_HYPER;
3214 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER;
3215 uiop->uio_resid -= tlen + NFSX_HYPER;
3216 uiop->uio_offset += (tlen + NFSX_HYPER);
3217 } else {
3218 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3219 if (error)
3220 goto nfsmout;
3221 }
3222 if (nd->nd_flag & ND_NFSV4) {
3223 rderr = 0;
3224 nfsva.na_mntonfileno = UINT64_MAX;
3225 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3226 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3227 NULL, NULL, &rderr, p, cred);
3228 if (error)
3229 goto nfsmout;
3230 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3231 } else if (nd->nd_flag & ND_NFSV3) {
3232 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3233 ncookie.lval[0] = *tl++;
3234 ncookie.lval[1] = *tl++;
3235 } else {
3236 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3237 ncookie.lval[0] = 0;
3238 ncookie.lval[1] = *tl++;
3239 }
3240 if (bigenough) {
3241 if (nd->nd_flag & ND_NFSV4) {
3242 if (rderr) {
3243 dp->d_fileno = 0;
3244 } else {
3245 if (gotmnton) {
3246 if (nfsva.na_mntonfileno != UINT64_MAX)
3247 dp->d_fileno = nfsva.na_mntonfileno;
3248 else
3249 dp->d_fileno = nfsva.na_fileid;
3250 } else if (nfsva.na_filesid[0] ==
3251 dnp->n_vattr.na_filesid[0] &&
3252 nfsva.na_filesid[1] ==
3253 dnp->n_vattr.na_filesid[1]) {
3254 dp->d_fileno = nfsva.na_fileid;
3255 } else {
3256 do {
3257 fakefileno--;
3258 } while (fakefileno ==
3259 nfsva.na_fileid);
3260 dp->d_fileno = fakefileno;
3261 }
3262 dp->d_type = vtonfs_dtype(nfsva.na_type);
3263 }
3264 } else {
3265 dp->d_fileno = nfsva.na_fileid;
3266 }
3267 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3268 ncookie.lval[0];
3269 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3270 ncookie.lval[1];
3271 }
3272 more_dirs = fxdr_unsigned(int, *tl);
3273 }
3274 /*
3275 * If at end of rpc data, get the eof boolean
3276 */
3277 if (!more_dirs) {
3278 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3279 eof = fxdr_unsigned(int, *tl);
3280 if (tryformoredirs)
3281 more_dirs = !eof;
3282 if (nd->nd_flag & ND_NFSV4) {
3283 error = nfscl_postop_attr(nd, nap, attrflagp,
3284 stuff);
3285 if (error)
3286 goto nfsmout;
3287 }
3288 }
3289 m_freem(nd->nd_mrep);
3290 nd->nd_mrep = NULL;
3291 }
3292 /*
3293 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3294 * by increasing d_reclen for the last record.
3295 */
3296 if (blksiz > 0) {
3297 left = DIRBLKSIZ - blksiz;
3298 NFSBZERO(uiop->uio_iov->iov_base, left);
3299 dp->d_reclen += left;
3300 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
3301 left;
3302 uiop->uio_iov->iov_len -= left;
3303 uiop->uio_resid -= left;
3304 uiop->uio_offset += left;
3305 }
3306
3307 /*
3308 * If returning no data, assume end of file.
3309 * If not bigenough, return not end of file, since you aren't
3310 * returning all the data
3311 * Otherwise, return the eof flag from the server.
3312 */
3313 if (eofp) {
3314 if (tresid == ((size_t)(uiop->uio_resid)))
3315 *eofp = 1;
3316 else if (!bigenough)
3317 *eofp = 0;
3318 else
3319 *eofp = eof;
3320 }
3321
3322 /*
3323 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3324 */
3325 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) {
3326 dp = (struct dirent *)uiop->uio_iov->iov_base;
3327 NFSBZERO(dp, DIRBLKSIZ);
3328 dp->d_type = DT_UNKNOWN;
3329 tl = (u_int32_t *)&dp->d_name[4];
3330 *tl++ = cookie.lval[0];
3331 *tl = cookie.lval[1];
3332 dp->d_reclen = DIRBLKSIZ;
3333 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
3334 DIRBLKSIZ;
3335 uiop->uio_iov->iov_len -= DIRBLKSIZ;
3336 uiop->uio_resid -= DIRBLKSIZ;
3337 uiop->uio_offset += DIRBLKSIZ;
3338 }
3339
3340 nfsmout:
3341 if (nd->nd_mrep != NULL)
3342 m_freem(nd->nd_mrep);
3343 return (error);
3344 }
3345
3346 #ifndef APPLE
3347 /*
3348 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
3349 * (Also used for NFS V4 when mount flag set.)
3350 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
3351 */
3352 int
3353 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
3354 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3355 int *eofp, void *stuff)
3356 {
3357 int len, left;
3358 struct dirent *dp = NULL;
3359 u_int32_t *tl;
3360 vnode_t newvp = NULLVP;
3361 struct nfsrv_descript nfsd, *nd = &nfsd;
3362 struct nameidata nami, *ndp = &nami;
3363 struct componentname *cnp = &ndp->ni_cnd;
3364 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
3365 struct nfsnode *dnp = VTONFS(vp), *np;
3366 struct nfsvattr nfsva;
3367 struct nfsfh *nfhp;
3368 nfsquad_t cookie, ncookie;
3369 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
3370 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
3371 int isdotdot = 0, unlocknewvp = 0;
3372 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX;
3373 u_int64_t fileno = 0;
3374 char *cp;
3375 nfsattrbit_t attrbits, dattrbits;
3376 size_t tresid;
3377 u_int32_t *tl2 = NULL, rderr;
3378 struct timespec dctime;
3379
3380 KASSERT(uiop->uio_iovcnt == 1 &&
3381 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0,
3382 ("nfs readdirplusrpc bad uio"));
3383 ncookie.lval[0] = ncookie.lval[1] = 0;
3384 timespecclear(&dctime);
3385 *attrflagp = 0;
3386 if (eofp != NULL)
3387 *eofp = 0;
3388 ndp->ni_dvp = vp;
3389 nd->nd_mrep = NULL;
3390 cookie.lval[0] = cookiep->nfsuquad[0];
3391 cookie.lval[1] = cookiep->nfsuquad[1];
3392 tresid = uiop->uio_resid;
3393
3394 /*
3395 * For NFSv4, first create the "." and ".." entries.
3396 */
3397 if (NFSHASNFSV4(nmp)) {
3398 NFSGETATTR_ATTRBIT(&dattrbits);
3399 NFSZERO_ATTRBIT(&attrbits);
3400 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
3401 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
3402 NFSATTRBIT_MOUNTEDONFILEID)) {
3403 NFSSETBIT_ATTRBIT(&attrbits,
3404 NFSATTRBIT_MOUNTEDONFILEID);
3405 gotmnton = 1;
3406 } else {
3407 /*
3408 * Must fake it. Use the fileno, except when the
3409 * fsid is != to that of the directory. For that
3410 * case, generate a fake fileno that is not the same.
3411 */
3412 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
3413 gotmnton = 0;
3414 }
3415
3416 /*
3417 * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
3418 */
3419 if (uiop->uio_offset == 0) {
3420 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
3421 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3422 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
3423 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3424 (void) nfsrv_putattrbit(nd, &attrbits);
3425 error = nfscl_request(nd, vp, p, cred, stuff);
3426 if (error)
3427 return (error);
3428 dotfileid = 0; /* Fake out the compiler. */
3429 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
3430 error = nfsm_loadattr(nd, &nfsva);
3431 if (error != 0)
3432 goto nfsmout;
3433 dctime = nfsva.na_ctime;
3434 dotfileid = nfsva.na_fileid;
3435 }
3436 if (nd->nd_repstat == 0) {
3437 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
3438 len = fxdr_unsigned(int, *(tl + 4));
3439 if (len > 0 && len <= NFSX_V4FHMAX)
3440 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3441 else
3442 error = EPERM;
3443 if (!error) {
3444 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3445 nfsva.na_mntonfileno = UINT64_MAX;
3446 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3447 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3448 NULL, NULL, NULL, p, cred);
3449 if (error) {
3450 dotdotfileid = dotfileid;
3451 } else if (gotmnton) {
3452 if (nfsva.na_mntonfileno != UINT64_MAX)
3453 dotdotfileid = nfsva.na_mntonfileno;
3454 else
3455 dotdotfileid = nfsva.na_fileid;
3456 } else if (nfsva.na_filesid[0] ==
3457 dnp->n_vattr.na_filesid[0] &&
3458 nfsva.na_filesid[1] ==
3459 dnp->n_vattr.na_filesid[1]) {
3460 dotdotfileid = nfsva.na_fileid;
3461 } else {
3462 do {
3463 fakefileno--;
3464 } while (fakefileno ==
3465 nfsva.na_fileid);
3466 dotdotfileid = fakefileno;
3467 }
3468 }
3469 } else if (nd->nd_repstat == NFSERR_NOENT) {
3470 /*
3471 * Lookupp returns NFSERR_NOENT when we are
3472 * at the root, so just use the current dir.
3473 */
3474 nd->nd_repstat = 0;
3475 dotdotfileid = dotfileid;
3476 } else {
3477 error = nd->nd_repstat;
3478 }
3479 m_freem(nd->nd_mrep);
3480 if (error)
3481 return (error);
3482 nd->nd_mrep = NULL;
3483 dp = (struct dirent *)uiop->uio_iov->iov_base;
3484 dp->d_pad0 = dp->d_pad1 = 0;
3485 dp->d_off = 0;
3486 dp->d_type = DT_DIR;
3487 dp->d_fileno = dotfileid;
3488 dp->d_namlen = 1;
3489 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */
3490 dp->d_name[0] = '.';
3491 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
3492 /*
3493 * Just make these offset cookie 0.
3494 */
3495 tl = (u_int32_t *)&dp->d_name[8];
3496 *tl++ = 0;
3497 *tl = 0;
3498 blksiz += dp->d_reclen;
3499 uiop->uio_resid -= dp->d_reclen;
3500 uiop->uio_offset += dp->d_reclen;
3501 uiop->uio_iov->iov_base =
3502 (char *)uiop->uio_iov->iov_base + dp->d_reclen;
3503 uiop->uio_iov->iov_len -= dp->d_reclen;
3504 dp = (struct dirent *)uiop->uio_iov->iov_base;
3505 dp->d_pad0 = dp->d_pad1 = 0;
3506 dp->d_off = 0;
3507 dp->d_type = DT_DIR;
3508 dp->d_fileno = dotdotfileid;
3509 dp->d_namlen = 2;
3510 *((uint64_t *)dp->d_name) = 0;
3511 dp->d_name[0] = '.';
3512 dp->d_name[1] = '.';
3513 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
3514 /*
3515 * Just make these offset cookie 0.
3516 */
3517 tl = (u_int32_t *)&dp->d_name[8];
3518 *tl++ = 0;
3519 *tl = 0;
3520 blksiz += dp->d_reclen;
3521 uiop->uio_resid -= dp->d_reclen;
3522 uiop->uio_offset += dp->d_reclen;
3523 uiop->uio_iov->iov_base =
3524 (char *)uiop->uio_iov->iov_base + dp->d_reclen;
3525 uiop->uio_iov->iov_len -= dp->d_reclen;
3526 }
3527 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3528 if (gotmnton)
3529 NFSSETBIT_ATTRBIT(&attrbits,
3530 NFSATTRBIT_MOUNTEDONFILEID);
3531 }
3532
3533 /*
3534 * Loop around doing readdir rpc's of size nm_readdirsize.
3535 * The stopping criteria is EOF or buffer full.
3536 */
3537 while (more_dirs && bigenough) {
3538 *attrflagp = 0;
3539 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3540 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3541 *tl++ = cookie.lval[0];
3542 *tl++ = cookie.lval[1];
3543 if (cookie.qval == 0) {
3544 *tl++ = 0;
3545 *tl++ = 0;
3546 } else {
3547 NFSLOCKNODE(dnp);
3548 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3549 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3550 NFSUNLOCKNODE(dnp);
3551 }
3552 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3553 *tl = txdr_unsigned(nmp->nm_readdirsize);
3554 if (nd->nd_flag & ND_NFSV4) {
3555 (void) nfsrv_putattrbit(nd, &attrbits);
3556 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3557 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3558 (void) nfsrv_putattrbit(nd, &dattrbits);
3559 }
3560 error = nfscl_request(nd, vp, p, cred, stuff);
3561 if (error)
3562 return (error);
3563 if (nd->nd_flag & ND_NFSV3)
3564 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3565 if (nd->nd_repstat || error) {
3566 if (!error)
3567 error = nd->nd_repstat;
3568 goto nfsmout;
3569 }
3570 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
3571 dctime = nap->na_ctime;
3572 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3573 NFSLOCKNODE(dnp);
3574 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3575 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3576 NFSUNLOCKNODE(dnp);
3577 more_dirs = fxdr_unsigned(int, *tl);
3578 if (!more_dirs)
3579 tryformoredirs = 0;
3580
3581 /* loop through the dir entries, doctoring them to 4bsd form */
3582 while (more_dirs && bigenough) {
3583 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3584 if (nd->nd_flag & ND_NFSV4) {
3585 ncookie.lval[0] = *tl++;
3586 ncookie.lval[1] = *tl++;
3587 } else {
3588 fileno = fxdr_hyper(tl);
3589 tl += 2;
3590 }
3591 len = fxdr_unsigned(int, *tl);
3592 if (len <= 0 || len > NFS_MAXNAMLEN) {
3593 error = EBADRPC;
3594 goto nfsmout;
3595 }
3596 tlen = roundup2(len, 8);
3597 if (tlen == len)
3598 tlen += 8; /* To ensure null termination. */
3599 left = DIRBLKSIZ - blksiz;
3600 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) {
3601 NFSBZERO(uiop->uio_iov->iov_base, left);
3602 dp->d_reclen += left;
3603 uiop->uio_iov->iov_base =
3604 (char *)uiop->uio_iov->iov_base + left;
3605 uiop->uio_iov->iov_len -= left;
3606 uiop->uio_resid -= left;
3607 uiop->uio_offset += left;
3608 blksiz = 0;
3609 }
3610 if (_GENERIC_DIRLEN(len) + NFSX_HYPER >
3611 uiop->uio_resid)
3612 bigenough = 0;
3613 if (bigenough) {
3614 dp = (struct dirent *)uiop->uio_iov->iov_base;
3615 dp->d_pad0 = dp->d_pad1 = 0;
3616 dp->d_off = 0;
3617 dp->d_namlen = len;
3618 dp->d_reclen = _GENERIC_DIRLEN(len) +
3619 NFSX_HYPER;
3620 dp->d_type = DT_UNKNOWN;
3621 blksiz += dp->d_reclen;
3622 if (blksiz == DIRBLKSIZ)
3623 blksiz = 0;
3624 uiop->uio_resid -= DIRHDSIZ;
3625 uiop->uio_offset += DIRHDSIZ;
3626 uiop->uio_iov->iov_base =
3627 (char *)uiop->uio_iov->iov_base + DIRHDSIZ;
3628 uiop->uio_iov->iov_len -= DIRHDSIZ;
3629 cnp->cn_nameptr = uiop->uio_iov->iov_base;
3630 cnp->cn_namelen = len;
3631 NFSCNHASHZERO(cnp);
3632 error = nfsm_mbufuio(nd, uiop, len);
3633 if (error)
3634 goto nfsmout;
3635 cp = uiop->uio_iov->iov_base;
3636 tlen -= len;
3637 NFSBZERO(cp, tlen);
3638 cp += tlen; /* points to cookie storage */
3639 tl2 = (u_int32_t *)cp;
3640 if (len == 2 && cnp->cn_nameptr[0] == '.' &&
3641 cnp->cn_nameptr[1] == '.')
3642 isdotdot = 1;
3643 else
3644 isdotdot = 0;
3645 uiop->uio_iov->iov_base =
3646 (char *)uiop->uio_iov->iov_base + tlen +
3647 NFSX_HYPER;
3648 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER;
3649 uiop->uio_resid -= tlen + NFSX_HYPER;
3650 uiop->uio_offset += (tlen + NFSX_HYPER);
3651 } else {
3652 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3653 if (error)
3654 goto nfsmout;
3655 }
3656 nfhp = NULL;
3657 if (nd->nd_flag & ND_NFSV3) {
3658 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3659 ncookie.lval[0] = *tl++;
3660 ncookie.lval[1] = *tl++;
3661 attrflag = fxdr_unsigned(int, *tl);
3662 if (attrflag) {
3663 error = nfsm_loadattr(nd, &nfsva);
3664 if (error)
3665 goto nfsmout;
3666 }
3667 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3668 if (*tl) {
3669 error = nfsm_getfh(nd, &nfhp);
3670 if (error)
3671 goto nfsmout;
3672 }
3673 if (!attrflag && nfhp != NULL) {
3674 free(nfhp, M_NFSFH);
3675 nfhp = NULL;
3676 }
3677 } else {
3678 rderr = 0;
3679 nfsva.na_mntonfileno = 0xffffffff;
3680 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3681 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3682 NULL, NULL, &rderr, p, cred);
3683 if (error)
3684 goto nfsmout;
3685 }
3686
3687 if (bigenough) {
3688 if (nd->nd_flag & ND_NFSV4) {
3689 if (rderr) {
3690 dp->d_fileno = 0;
3691 } else if (gotmnton) {
3692 if (nfsva.na_mntonfileno != 0xffffffff)
3693 dp->d_fileno = nfsva.na_mntonfileno;
3694 else
3695 dp->d_fileno = nfsva.na_fileid;
3696 } else if (nfsva.na_filesid[0] ==
3697 dnp->n_vattr.na_filesid[0] &&
3698 nfsva.na_filesid[1] ==
3699 dnp->n_vattr.na_filesid[1]) {
3700 dp->d_fileno = nfsva.na_fileid;
3701 } else {
3702 do {
3703 fakefileno--;
3704 } while (fakefileno ==
3705 nfsva.na_fileid);
3706 dp->d_fileno = fakefileno;
3707 }
3708 } else {
3709 dp->d_fileno = fileno;
3710 }
3711 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3712 ncookie.lval[0];
3713 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3714 ncookie.lval[1];
3715
3716 if (nfhp != NULL) {
3717 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3718 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3719 VREF(vp);
3720 newvp = vp;
3721 unlocknewvp = 0;
3722 free(nfhp, M_NFSFH);
3723 np = dnp;
3724 } else if (isdotdot != 0) {
3725 /*
3726 * Skip doing a nfscl_nget() call for "..".
3727 * There's a race between acquiring the nfs
3728 * node here and lookups that look for the
3729 * directory being read (in the parent).
3730 * It would try to get a lock on ".." here,
3731 * owning the lock on the directory being
3732 * read. Lookup will hold the lock on ".."
3733 * and try to acquire the lock on the
3734 * directory being read.
3735 * If the directory is unlocked/relocked,
3736 * then there is a LOR with the buflock
3737 * vp is relocked.
3738 */
3739 free(nfhp, M_NFSFH);
3740 } else {
3741 error = nfscl_nget(vp->v_mount, vp,
3742 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
3743 if (!error) {
3744 newvp = NFSTOV(np);
3745 unlocknewvp = 1;
3746 }
3747 }
3748 nfhp = NULL;
3749 if (newvp != NULLVP) {
3750 error = nfscl_loadattrcache(&newvp,
3751 &nfsva, NULL, NULL, 0, 0);
3752 if (error) {
3753 if (unlocknewvp)
3754 vput(newvp);
3755 else
3756 vrele(newvp);
3757 goto nfsmout;
3758 }
3759 dp->d_type =
3760 vtonfs_dtype(np->n_vattr.na_type);
3761 ndp->ni_vp = newvp;
3762 NFSCNHASH(cnp, HASHINIT);
3763 if (cnp->cn_namelen <= NCHNAMLEN &&
3764 ndp->ni_dvp != ndp->ni_vp &&
3765 (newvp->v_type != VDIR ||
3766 dctime.tv_sec != 0)) {
3767 cache_enter_time(ndp->ni_dvp,
3768 ndp->ni_vp, cnp,
3769 &nfsva.na_ctime,
3770 newvp->v_type != VDIR ? NULL :
3771 &dctime);
3772 }
3773 if (unlocknewvp)
3774 vput(newvp);
3775 else
3776 vrele(newvp);
3777 newvp = NULLVP;
3778 }
3779 }
3780 } else if (nfhp != NULL) {
3781 free(nfhp, M_NFSFH);
3782 }
3783 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3784 more_dirs = fxdr_unsigned(int, *tl);
3785 }
3786 /*
3787 * If at end of rpc data, get the eof boolean
3788 */
3789 if (!more_dirs) {
3790 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3791 eof = fxdr_unsigned(int, *tl);
3792 if (tryformoredirs)
3793 more_dirs = !eof;
3794 if (nd->nd_flag & ND_NFSV4) {
3795 error = nfscl_postop_attr(nd, nap, attrflagp,
3796 stuff);
3797 if (error)
3798 goto nfsmout;
3799 }
3800 }
3801 m_freem(nd->nd_mrep);
3802 nd->nd_mrep = NULL;
3803 }
3804 /*
3805 * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3806 * by increasing d_reclen for the last record.
3807 */
3808 if (blksiz > 0) {
3809 left = DIRBLKSIZ - blksiz;
3810 NFSBZERO(uiop->uio_iov->iov_base, left);
3811 dp->d_reclen += left;
3812 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
3813 left;
3814 uiop->uio_iov->iov_len -= left;
3815 uiop->uio_resid -= left;
3816 uiop->uio_offset += left;
3817 }
3818
3819 /*
3820 * If returning no data, assume end of file.
3821 * If not bigenough, return not end of file, since you aren't
3822 * returning all the data
3823 * Otherwise, return the eof flag from the server.
3824 */
3825 if (eofp != NULL) {
3826 if (tresid == uiop->uio_resid)
3827 *eofp = 1;
3828 else if (!bigenough)
3829 *eofp = 0;
3830 else
3831 *eofp = eof;
3832 }
3833
3834 /*
3835 * Add extra empty records to any remaining DIRBLKSIZ chunks.
3836 */
3837 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) {
3838 dp = (struct dirent *)uiop->uio_iov->iov_base;
3839 NFSBZERO(dp, DIRBLKSIZ);
3840 dp->d_type = DT_UNKNOWN;
3841 tl = (u_int32_t *)&dp->d_name[4];
3842 *tl++ = cookie.lval[0];
3843 *tl = cookie.lval[1];
3844 dp->d_reclen = DIRBLKSIZ;
3845 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base +
3846 DIRBLKSIZ;
3847 uiop->uio_iov->iov_len -= DIRBLKSIZ;
3848 uiop->uio_resid -= DIRBLKSIZ;
3849 uiop->uio_offset += DIRBLKSIZ;
3850 }
3851
3852 nfsmout:
3853 if (nd->nd_mrep != NULL)
3854 m_freem(nd->nd_mrep);
3855 return (error);
3856 }
3857 #endif /* !APPLE */
3858
3859 /*
3860 * Nfs commit rpc
3861 */
3862 int
3863 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3864 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3865 {
3866 u_int32_t *tl;
3867 struct nfsrv_descript nfsd, *nd = &nfsd;
3868 nfsattrbit_t attrbits;
3869 int error;
3870 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
3871
3872 *attrflagp = 0;
3873 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3874 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3875 txdr_hyper(offset, tl);
3876 tl += 2;
3877 *tl = txdr_unsigned(cnt);
3878 if (nd->nd_flag & ND_NFSV4) {
3879 /*
3880 * And do a Getattr op.
3881 */
3882 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3883 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3884 NFSGETATTR_ATTRBIT(&attrbits);
3885 (void) nfsrv_putattrbit(nd, &attrbits);
3886 }
3887 error = nfscl_request(nd, vp, p, cred, stuff);
3888 if (error)
3889 return (error);
3890 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3891 if (!error && !nd->nd_repstat) {
3892 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3893 NFSLOCKMNT(nmp);
3894 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) {
3895 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
3896 nd->nd_repstat = NFSERR_STALEWRITEVERF;
3897 }
3898 NFSUNLOCKMNT(nmp);
3899 if (nd->nd_flag & ND_NFSV4)
3900 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3901 }
3902 nfsmout:
3903 if (!error && nd->nd_repstat)
3904 error = nd->nd_repstat;
3905 m_freem(nd->nd_mrep);
3906 return (error);
3907 }
3908
3909 /*
3910 * NFS byte range lock rpc.
3911 * (Mostly just calls one of the three lower level RPC routines.)
3912 */
3913 int
3914 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3915 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3916 {
3917 struct nfscllockowner *lp;
3918 struct nfsclclient *clp;
3919 struct nfsfh *nfhp;
3920 struct nfsrv_descript nfsd, *nd = &nfsd;
3921 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
3922 u_int64_t off, len;
3923 off_t start, end;
3924 u_int32_t clidrev = 0;
3925 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3926 int callcnt, dorpc;
3927
3928 /*
3929 * Convert the flock structure into a start and end and do POSIX
3930 * bounds checking.
3931 */
3932 switch (fl->l_whence) {
3933 case SEEK_SET:
3934 case SEEK_CUR:
3935 /*
3936 * Caller is responsible for adding any necessary offset
3937 * when SEEK_CUR is used.
3938 */
3939 start = fl->l_start;
3940 off = fl->l_start;
3941 break;
3942 case SEEK_END:
3943 start = size + fl->l_start;
3944 off = size + fl->l_start;
3945 break;
3946 default:
3947 return (EINVAL);
3948 }
3949 if (start < 0)
3950 return (EINVAL);
3951 if (fl->l_len != 0) {
3952 end = start + fl->l_len - 1;
3953 if (end < start)
3954 return (EINVAL);
3955 }
3956
3957 len = fl->l_len;
3958 if (len == 0)
3959 len = NFS64BITSSET;
3960 retrycnt = 0;
3961 do {
3962 nd->nd_repstat = 0;
3963 if (op == F_GETLK) {
3964 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp);
3965 if (error)
3966 return (error);
3967 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
3968 if (!error) {
3969 clidrev = clp->nfsc_clientidrev;
3970 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3971 p, id, flags);
3972 } else if (error == -1) {
3973 error = 0;
3974 }
3975 nfscl_clientrelease(clp);
3976 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3977 /*
3978 * We must loop around for all lockowner cases.
3979 */
3980 callcnt = 0;
3981 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp);
3982 if (error)
3983 return (error);
3984 do {
3985 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3986 clp, id, flags, &lp, &dorpc);
3987 /*
3988 * If it returns a NULL lp, we're done.
3989 */
3990 if (lp == NULL) {
3991 if (callcnt == 0)
3992 nfscl_clientrelease(clp);
3993 else
3994 nfscl_releasealllocks(clp, vp, p, id, flags);
3995 return (error);
3996 }
3997 if (nmp->nm_clp != NULL)
3998 clidrev = nmp->nm_clp->nfsc_clientidrev;
3999 else
4000 clidrev = 0;
4001 /*
4002 * If the server doesn't support Posix lock semantics,
4003 * only allow locks on the entire file, since it won't
4004 * handle overlapping byte ranges.
4005 * There might still be a problem when a lock
4006 * upgrade/downgrade (read<->write) occurs, since the
4007 * server "might" expect an unlock first?
4008 */
4009 if (dorpc && (lp->nfsl_open->nfso_posixlock ||
4010 (off == 0 && len == NFS64BITSSET))) {
4011 /*
4012 * Since the lock records will go away, we must
4013 * wait for grace and delay here.
4014 */
4015 do {
4016 error = nfsrpc_locku(nd, nmp, lp, off, len,
4017 NFSV4LOCKT_READ, cred, p, 0);
4018 if ((nd->nd_repstat == NFSERR_GRACE ||
4019 nd->nd_repstat == NFSERR_DELAY) &&
4020 error == 0)
4021 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
4022 "nfs_advlock");
4023 } while ((nd->nd_repstat == NFSERR_GRACE ||
4024 nd->nd_repstat == NFSERR_DELAY) && error == 0);
4025 }
4026 callcnt++;
4027 } while (error == 0 && nd->nd_repstat == 0);
4028 nfscl_releasealllocks(clp, vp, p, id, flags);
4029 } else if (op == F_SETLK) {
4030 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
4031 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
4032 if (error || donelocally) {
4033 return (error);
4034 }
4035 if (nmp->nm_clp != NULL)
4036 clidrev = nmp->nm_clp->nfsc_clientidrev;
4037 else
4038 clidrev = 0;
4039 nfhp = VTONFS(vp)->n_fhp;
4040 if (!lp->nfsl_open->nfso_posixlock &&
4041 (off != 0 || len != NFS64BITSSET)) {
4042 error = EINVAL;
4043 } else {
4044 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
4045 nfhp->nfh_len, lp, newone, reclaim, off,
4046 len, fl->l_type, cred, p, 0);
4047 }
4048 if (!error)
4049 error = nd->nd_repstat;
4050 nfscl_lockrelease(lp, error, newone);
4051 } else {
4052 error = EINVAL;
4053 }
4054 if (!error)
4055 error = nd->nd_repstat;
4056 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
4057 error == NFSERR_STALEDONTRECOVER ||
4058 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
4059 error == NFSERR_BADSESSION) {
4060 (void) nfs_catnap(PZERO, error, "nfs_advlock");
4061 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
4062 && clidrev != 0) {
4063 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
4064 retrycnt++;
4065 }
4066 } while (error == NFSERR_GRACE ||
4067 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
4068 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
4069 error == NFSERR_BADSESSION ||
4070 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
4071 expireret == 0 && clidrev != 0 && retrycnt < 4));
4072 if (error && retrycnt >= 4)
4073 error = EIO;
4074 return (error);
4075 }
4076
4077 /*
4078 * The lower level routine for the LockT case.
4079 */
4080 int
4081 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
4082 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
4083 struct ucred *cred, NFSPROC_T *p, void *id, int flags)
4084 {
4085 u_int32_t *tl;
4086 int error, type, size;
4087 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4088 struct nfsnode *np;
4089 struct nfsmount *nmp;
4090 struct nfsclsession *tsep;
4091
4092 nmp = VFSTONFS(vp->v_mount);
4093 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
4094 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
4095 if (fl->l_type == F_RDLCK)
4096 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
4097 else
4098 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
4099 txdr_hyper(off, tl);
4100 tl += 2;
4101 txdr_hyper(len, tl);
4102 tl += 2;
4103 tsep = nfsmnt_mdssession(nmp);
4104 *tl++ = tsep->nfsess_clientid.lval[0];
4105 *tl = tsep->nfsess_clientid.lval[1];
4106 nfscl_filllockowner(id, own, flags);
4107 np = VTONFS(vp);
4108 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
4109 np->n_fhp->nfh_len);
4110 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
4111 error = nfscl_request(nd, vp, p, cred, NULL);
4112 if (error)
4113 return (error);
4114 if (nd->nd_repstat == 0) {
4115 fl->l_type = F_UNLCK;
4116 } else if (nd->nd_repstat == NFSERR_DENIED) {
4117 nd->nd_repstat = 0;
4118 fl->l_whence = SEEK_SET;
4119 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
4120 fl->l_start = fxdr_hyper(tl);
4121 tl += 2;
4122 len = fxdr_hyper(tl);
4123 tl += 2;
4124 if (len == NFS64BITSSET)
4125 fl->l_len = 0;
4126 else
4127 fl->l_len = len;
4128 type = fxdr_unsigned(int, *tl++);
4129 if (type == NFSV4LOCKT_WRITE)
4130 fl->l_type = F_WRLCK;
4131 else
4132 fl->l_type = F_RDLCK;
4133 /*
4134 * XXX For now, I have no idea what to do with the
4135 * conflicting lock_owner, so I'll just set the pid == 0
4136 * and skip over the lock_owner.
4137 */
4138 fl->l_pid = (pid_t)0;
4139 tl += 2;
4140 size = fxdr_unsigned(int, *tl);
4141 if (size < 0 || size > NFSV4_OPAQUELIMIT)
4142 error = EBADRPC;
4143 if (!error)
4144 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
4145 } else if (nd->nd_repstat == NFSERR_STALECLIENTID)
4146 nfscl_initiate_recovery(clp);
4147 nfsmout:
4148 m_freem(nd->nd_mrep);
4149 return (error);
4150 }
4151
4152 /*
4153 * Lower level function that performs the LockU RPC.
4154 */
4155 static int
4156 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
4157 struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
4158 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
4159 {
4160 u_int32_t *tl;
4161 int error;
4162
4163 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
4164 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0);
4165 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
4166 *tl++ = txdr_unsigned(type);
4167 *tl = txdr_unsigned(lp->nfsl_seqid);
4168 if (nfstest_outofseq &&
4169 (arc4random() % nfstest_outofseq) == 0)
4170 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
4171 tl++;
4172 if (NFSHASNFSV4N(nmp))
4173 *tl++ = 0;
4174 else
4175 *tl++ = lp->nfsl_stateid.seqid;
4176 *tl++ = lp->nfsl_stateid.other[0];
4177 *tl++ = lp->nfsl_stateid.other[1];
4178 *tl++ = lp->nfsl_stateid.other[2];
4179 txdr_hyper(off, tl);
4180 tl += 2;
4181 txdr_hyper(len, tl);
4182 if (syscred)
4183 nd->nd_flag |= ND_USEGSSNAME;
4184 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4185 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4186 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
4187 if (error)
4188 return (error);
4189 if (nd->nd_repstat == 0) {
4190 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
4191 lp->nfsl_stateid.seqid = *tl++;
4192 lp->nfsl_stateid.other[0] = *tl++;
4193 lp->nfsl_stateid.other[1] = *tl++;
4194 lp->nfsl_stateid.other[2] = *tl;
4195 } else if (nd->nd_repstat == NFSERR_STALESTATEID)
4196 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
4197 nfsmout:
4198 m_freem(nd->nd_mrep);
4199 return (error);
4200 }
4201
4202 /*
4203 * The actual Lock RPC.
4204 */
4205 int
4206 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
4207 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
4208 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
4209 NFSPROC_T *p, int syscred)
4210 {
4211 u_int32_t *tl;
4212 int error, size;
4213 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4214 struct nfsclsession *tsep;
4215
4216 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0);
4217 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
4218 if (type == F_RDLCK)
4219 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
4220 else
4221 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
4222 *tl++ = txdr_unsigned(reclaim);
4223 txdr_hyper(off, tl);
4224 tl += 2;
4225 txdr_hyper(len, tl);
4226 tl += 2;
4227 if (newone) {
4228 *tl = newnfs_true;
4229 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
4230 2 * NFSX_UNSIGNED + NFSX_HYPER);
4231 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
4232 if (NFSHASNFSV4N(nmp))
4233 *tl++ = 0;
4234 else
4235 *tl++ = lp->nfsl_open->nfso_stateid.seqid;
4236 *tl++ = lp->nfsl_open->nfso_stateid.other[0];
4237 *tl++ = lp->nfsl_open->nfso_stateid.other[1];
4238 *tl++ = lp->nfsl_open->nfso_stateid.other[2];
4239 *tl++ = txdr_unsigned(lp->nfsl_seqid);
4240 tsep = nfsmnt_mdssession(nmp);
4241 *tl++ = tsep->nfsess_clientid.lval[0];
4242 *tl = tsep->nfsess_clientid.lval[1];
4243 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4244 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4245 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4246 } else {
4247 *tl = newnfs_false;
4248 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
4249 if (NFSHASNFSV4N(nmp))
4250 *tl++ = 0;
4251 else
4252 *tl++ = lp->nfsl_stateid.seqid;
4253 *tl++ = lp->nfsl_stateid.other[0];
4254 *tl++ = lp->nfsl_stateid.other[1];
4255 *tl++ = lp->nfsl_stateid.other[2];
4256 *tl = txdr_unsigned(lp->nfsl_seqid);
4257 if (nfstest_outofseq &&
4258 (arc4random() % nfstest_outofseq) == 0)
4259 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
4260 }
4261 if (syscred)
4262 nd->nd_flag |= ND_USEGSSNAME;
4263 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
4264 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4265 if (error)
4266 return (error);
4267 if (newone)
4268 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
4269 NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
4270 if (nd->nd_repstat == 0) {
4271 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
4272 lp->nfsl_stateid.seqid = *tl++;
4273 lp->nfsl_stateid.other[0] = *tl++;
4274 lp->nfsl_stateid.other[1] = *tl++;
4275 lp->nfsl_stateid.other[2] = *tl;
4276 } else if (nd->nd_repstat == NFSERR_DENIED) {
4277 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
4278 size = fxdr_unsigned(int, *(tl + 7));
4279 if (size < 0 || size > NFSV4_OPAQUELIMIT)
4280 error = EBADRPC;
4281 if (!error)
4282 error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
4283 } else if (nd->nd_repstat == NFSERR_STALESTATEID)
4284 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
4285 nfsmout:
4286 m_freem(nd->nd_mrep);
4287 return (error);
4288 }
4289
4290 /*
4291 * nfs statfs rpc
4292 * (always called with the vp for the mount point)
4293 */
4294 int
4295 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
4296 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4297 void *stuff)
4298 {
4299 u_int32_t *tl = NULL;
4300 struct nfsrv_descript nfsd, *nd = &nfsd;
4301 struct nfsmount *nmp;
4302 nfsattrbit_t attrbits;
4303 int error;
4304
4305 *attrflagp = 0;
4306 nmp = VFSTONFS(vp->v_mount);
4307 if (NFSHASNFSV4(nmp)) {
4308 /*
4309 * For V4, you actually do a getattr.
4310 */
4311 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4312 NFSSTATFS_GETATTRBIT(&attrbits);
4313 (void) nfsrv_putattrbit(nd, &attrbits);
4314 nd->nd_flag |= ND_USEGSSNAME;
4315 error = nfscl_request(nd, vp, p, cred, stuff);
4316 if (error)
4317 return (error);
4318 if (nd->nd_repstat == 0) {
4319 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4320 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
4321 cred);
4322 if (!error) {
4323 nmp->nm_fsid[0] = nap->na_filesid[0];
4324 nmp->nm_fsid[1] = nap->na_filesid[1];
4325 NFSSETHASSETFSID(nmp);
4326 *attrflagp = 1;
4327 }
4328 } else {
4329 error = nd->nd_repstat;
4330 }
4331 if (error)
4332 goto nfsmout;
4333 } else {
4334 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
4335 error = nfscl_request(nd, vp, p, cred, stuff);
4336 if (error)
4337 return (error);
4338 if (nd->nd_flag & ND_NFSV3) {
4339 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4340 if (error)
4341 goto nfsmout;
4342 }
4343 if (nd->nd_repstat) {
4344 error = nd->nd_repstat;
4345 goto nfsmout;
4346 }
4347 NFSM_DISSECT(tl, u_int32_t *,
4348 NFSX_STATFS(nd->nd_flag & ND_NFSV3));
4349 }
4350 if (NFSHASNFSV3(nmp)) {
4351 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
4352 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
4353 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
4354 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
4355 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
4356 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
4357 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
4358 } else if (NFSHASNFSV4(nmp) == 0) {
4359 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
4360 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
4361 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
4362 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
4363 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
4364 }
4365 nfsmout:
4366 m_freem(nd->nd_mrep);
4367 return (error);
4368 }
4369
4370 /*
4371 * nfs pathconf rpc
4372 */
4373 int
4374 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
4375 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4376 void *stuff)
4377 {
4378 struct nfsrv_descript nfsd, *nd = &nfsd;
4379 struct nfsmount *nmp;
4380 u_int32_t *tl;
4381 nfsattrbit_t attrbits;
4382 int error;
4383
4384 *attrflagp = 0;
4385 nmp = VFSTONFS(vp->v_mount);
4386 if (NFSHASNFSV4(nmp)) {
4387 /*
4388 * For V4, you actually do a getattr.
4389 */
4390 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4391 NFSPATHCONF_GETATTRBIT(&attrbits);
4392 (void) nfsrv_putattrbit(nd, &attrbits);
4393 nd->nd_flag |= ND_USEGSSNAME;
4394 error = nfscl_request(nd, vp, p, cred, stuff);
4395 if (error)
4396 return (error);
4397 if (nd->nd_repstat == 0) {
4398 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4399 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
4400 cred);
4401 if (!error)
4402 *attrflagp = 1;
4403 } else {
4404 error = nd->nd_repstat;
4405 }
4406 } else {
4407 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
4408 error = nfscl_request(nd, vp, p, cred, stuff);
4409 if (error)
4410 return (error);
4411 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4412 if (nd->nd_repstat && !error)
4413 error = nd->nd_repstat;
4414 if (!error) {
4415 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
4416 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
4417 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
4418 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
4419 pc->pc_chownrestricted =
4420 fxdr_unsigned(u_int32_t, *tl++);
4421 pc->pc_caseinsensitive =
4422 fxdr_unsigned(u_int32_t, *tl++);
4423 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
4424 }
4425 }
4426 nfsmout:
4427 m_freem(nd->nd_mrep);
4428 return (error);
4429 }
4430
4431 /*
4432 * nfs version 3 fsinfo rpc call
4433 */
4434 int
4435 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
4436 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
4437 {
4438 u_int32_t *tl;
4439 struct nfsrv_descript nfsd, *nd = &nfsd;
4440 int error;
4441
4442 *attrflagp = 0;
4443 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
4444 error = nfscl_request(nd, vp, p, cred, stuff);
4445 if (error)
4446 return (error);
4447 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4448 if (nd->nd_repstat && !error)
4449 error = nd->nd_repstat;
4450 if (!error) {
4451 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
4452 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
4453 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
4454 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
4455 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
4456 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
4457 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
4458 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
4459 fsp->fs_maxfilesize = fxdr_hyper(tl);
4460 tl += 2;
4461 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
4462 tl += 2;
4463 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
4464 }
4465 nfsmout:
4466 m_freem(nd->nd_mrep);
4467 return (error);
4468 }
4469
4470 /*
4471 * This function performs the Renew RPC.
4472 */
4473 int
4474 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred,
4475 NFSPROC_T *p)
4476 {
4477 u_int32_t *tl;
4478 struct nfsrv_descript nfsd;
4479 struct nfsrv_descript *nd = &nfsd;
4480 struct nfsmount *nmp;
4481 int error;
4482 struct nfssockreq *nrp;
4483 struct nfsclsession *tsep;
4484
4485 nmp = clp->nfsc_nmp;
4486 if (nmp == NULL)
4487 return (0);
4488 if (dsp == NULL)
4489 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0,
4490 0);
4491 else
4492 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
4493 &dsp->nfsclds_sess, 0, 0);
4494 if (!NFSHASNFSV4N(nmp)) {
4495 /* NFSv4.1 just uses a Sequence Op and not a Renew. */
4496 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4497 tsep = nfsmnt_mdssession(nmp);
4498 *tl++ = tsep->nfsess_clientid.lval[0];
4499 *tl = tsep->nfsess_clientid.lval[1];
4500 }
4501 nrp = NULL;
4502 if (dsp != NULL)
4503 nrp = dsp->nfsclds_sockp;
4504 if (nrp == NULL)
4505 /* If NULL, use the MDS socket. */
4506 nrp = &nmp->nm_sockreq;
4507 nd->nd_flag |= ND_USEGSSNAME;
4508 if (dsp == NULL)
4509 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4510 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4511 else {
4512 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4513 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
4514 if (error == ENXIO)
4515 nfscl_cancelreqs(dsp);
4516 }
4517 if (error)
4518 return (error);
4519 error = nd->nd_repstat;
4520 m_freem(nd->nd_mrep);
4521 return (error);
4522 }
4523
4524 /*
4525 * This function performs the Releaselockowner RPC.
4526 */
4527 int
4528 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
4529 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
4530 {
4531 struct nfsrv_descript nfsd, *nd = &nfsd;
4532 u_int32_t *tl;
4533 int error;
4534 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4535 struct nfsclsession *tsep;
4536
4537 if (NFSHASNFSV4N(nmp)) {
4538 /* For NFSv4.1, do a FreeStateID. */
4539 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
4540 NULL, 0, 0);
4541 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
4542 } else {
4543 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
4544 NULL, 0, 0);
4545 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4546 tsep = nfsmnt_mdssession(nmp);
4547 *tl++ = tsep->nfsess_clientid.lval[0];
4548 *tl = tsep->nfsess_clientid.lval[1];
4549 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4550 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4551 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4552 }
4553 nd->nd_flag |= ND_USEGSSNAME;
4554 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4555 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4556 if (error)
4557 return (error);
4558 error = nd->nd_repstat;
4559 m_freem(nd->nd_mrep);
4560 return (error);
4561 }
4562
4563 /*
4564 * This function performs the Compound to get the mount pt FH.
4565 */
4566 int
4567 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4568 NFSPROC_T *p)
4569 {
4570 u_int32_t *tl;
4571 struct nfsrv_descript nfsd;
4572 struct nfsrv_descript *nd = &nfsd;
4573 u_char *cp, *cp2;
4574 int error, cnt, len, setnil;
4575 u_int32_t *opcntp;
4576
4577 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0,
4578 0);
4579 cp = dirpath;
4580 cnt = 0;
4581 do {
4582 setnil = 0;
4583 while (*cp == '/')
4584 cp++;
4585 cp2 = cp;
4586 while (*cp2 != '\0' && *cp2 != '/')
4587 cp2++;
4588 if (*cp2 == '/') {
4589 setnil = 1;
4590 *cp2 = '\0';
4591 }
4592 if (cp2 != cp) {
4593 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4594 *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4595 nfsm_strtom(nd, cp, strlen(cp));
4596 cnt++;
4597 }
4598 if (setnil)
4599 *cp2++ = '/';
4600 cp = cp2;
4601 } while (*cp != '\0');
4602 if (NFSHASNFSV4N(nmp))
4603 /* Has a Sequence Op done by nfscl_reqstart(). */
4604 *opcntp = txdr_unsigned(3 + cnt);
4605 else
4606 *opcntp = txdr_unsigned(2 + cnt);
4607 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4608 *tl = txdr_unsigned(NFSV4OP_GETFH);
4609 nd->nd_flag |= ND_USEGSSNAME;
4610 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4611 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4612 if (error)
4613 return (error);
4614 if (nd->nd_repstat == 0) {
4615 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4616 tl += (2 + 2 * cnt);
4617 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4618 len > NFSX_FHMAX) {
4619 nd->nd_repstat = NFSERR_BADXDR;
4620 } else {
4621 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4622 if (nd->nd_repstat == 0)
4623 nmp->nm_fhsize = len;
4624 }
4625 }
4626 error = nd->nd_repstat;
4627 nfsmout:
4628 m_freem(nd->nd_mrep);
4629 return (error);
4630 }
4631
4632 /*
4633 * This function performs the Delegreturn RPC.
4634 */
4635 int
4636 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4637 struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4638 {
4639 u_int32_t *tl;
4640 struct nfsrv_descript nfsd;
4641 struct nfsrv_descript *nd = &nfsd;
4642 int error;
4643
4644 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4645 dp->nfsdl_fhlen, NULL, NULL, 0, 0);
4646 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4647 if (NFSHASNFSV4N(nmp))
4648 *tl++ = 0;
4649 else
4650 *tl++ = dp->nfsdl_stateid.seqid;
4651 *tl++ = dp->nfsdl_stateid.other[0];
4652 *tl++ = dp->nfsdl_stateid.other[1];
4653 *tl = dp->nfsdl_stateid.other[2];
4654 if (syscred)
4655 nd->nd_flag |= ND_USEGSSNAME;
4656 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4657 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4658 if (error)
4659 return (error);
4660 error = nd->nd_repstat;
4661 m_freem(nd->nd_mrep);
4662 return (error);
4663 }
4664
4665 /*
4666 * nfs getacl call.
4667 */
4668 int
4669 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4670 struct acl *aclp, void *stuff)
4671 {
4672 struct nfsrv_descript nfsd, *nd = &nfsd;
4673 int error;
4674 nfsattrbit_t attrbits;
4675 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
4676
4677 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4678 return (EOPNOTSUPP);
4679 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4680 NFSZERO_ATTRBIT(&attrbits);
4681 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4682 (void) nfsrv_putattrbit(nd, &attrbits);
4683 error = nfscl_request(nd, vp, p, cred, stuff);
4684 if (error)
4685 return (error);
4686 if (!nd->nd_repstat)
4687 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4688 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4689 else
4690 error = nd->nd_repstat;
4691 m_freem(nd->nd_mrep);
4692 return (error);
4693 }
4694
4695 /*
4696 * nfs setacl call.
4697 */
4698 int
4699 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4700 struct acl *aclp, void *stuff)
4701 {
4702 int error;
4703 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
4704
4705 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4706 return (EOPNOTSUPP);
4707 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4708 return (error);
4709 }
4710
4711 /*
4712 * nfs setacl call.
4713 */
4714 static int
4715 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4716 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4717 {
4718 struct nfsrv_descript nfsd, *nd = &nfsd;
4719 int error;
4720 nfsattrbit_t attrbits;
4721 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
4722
4723 if (!NFSHASNFSV4(nmp))
4724 return (EOPNOTSUPP);
4725 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4726 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4727 NFSZERO_ATTRBIT(&attrbits);
4728 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4729 (void) nfsv4_fillattr(nd, vp->v_mount, vp, aclp, NULL, NULL, 0,
4730 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL);
4731 error = nfscl_request(nd, vp, p, cred, stuff);
4732 if (error)
4733 return (error);
4734 /* Don't care about the pre/postop attributes */
4735 m_freem(nd->nd_mrep);
4736 return (nd->nd_repstat);
4737 }
4738
4739 /*
4740 * Do the NFSv4.1 Exchange ID.
4741 */
4742 int
4743 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp,
4744 struct nfssockreq *nrp, int minorvers, uint32_t exchflags,
4745 struct nfsclds **dspp, struct ucred *cred, NFSPROC_T *p)
4746 {
4747 uint32_t *tl, v41flags;
4748 struct nfsrv_descript nfsd;
4749 struct nfsrv_descript *nd = &nfsd;
4750 struct nfsclds *dsp;
4751 struct timespec verstime;
4752 int error, len;
4753
4754 *dspp = NULL;
4755 if (minorvers == 0)
4756 minorvers = nmp->nm_minorvers;
4757 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL,
4758 NFS_VER4, minorvers);
4759 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4760 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */
4761 *tl = txdr_unsigned(clp->nfsc_rev);
4762 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
4763
4764 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4765 *tl++ = txdr_unsigned(exchflags);
4766 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE);
4767
4768 /* Set the implementation id4 */
4769 *tl = txdr_unsigned(1);
4770 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org"));
4771 (void) nfsm_strtom(nd, version, strlen(version));
4772 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME);
4773 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */
4774 verstime.tv_nsec = 0;
4775 txdr_nfsv4time(&verstime, tl);
4776 nd->nd_flag |= ND_USEGSSNAME;
4777 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4778 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4779 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error,
4780 (int)nd->nd_repstat);
4781 if (error != 0)
4782 return (error);
4783 if (nd->nd_repstat == 0) {
4784 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER);
4785 len = fxdr_unsigned(int, *(tl + 7));
4786 if (len < 0 || len > NFSV4_OPAQUELIMIT) {
4787 error = NFSERR_BADXDR;
4788 goto nfsmout;
4789 }
4790 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS,
4791 M_WAITOK | M_ZERO);
4792 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
4793 dsp->nfsclds_servownlen = len;
4794 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++;
4795 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++;
4796 dsp->nfsclds_sess.nfsess_sequenceid =
4797 fxdr_unsigned(uint32_t, *tl++);
4798 v41flags = fxdr_unsigned(uint32_t, *tl);
4799 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 &&
4800 NFSHASPNFSOPT(nmp)) {
4801 NFSCL_DEBUG(1, "set PNFS\n");
4802 NFSLOCKMNT(nmp);
4803 nmp->nm_state |= NFSSTA_PNFS;
4804 NFSUNLOCKMNT(nmp);
4805 dsp->nfsclds_flags |= NFSCLDS_MDS;
4806 }
4807 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0)
4808 dsp->nfsclds_flags |= NFSCLDS_DS;
4809 if (minorvers == NFSV42_MINORVERSION)
4810 dsp->nfsclds_flags |= NFSCLDS_MINORV2;
4811 if (len > 0)
4812 nd->nd_repstat = nfsrv_mtostr(nd,
4813 dsp->nfsclds_serverown, len);
4814 if (nd->nd_repstat == 0) {
4815 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
4816 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
4817 NULL, MTX_DEF);
4818 nfscl_initsessionslots(&dsp->nfsclds_sess);
4819 *dspp = dsp;
4820 } else
4821 free(dsp, M_NFSCLDS);
4822 }
4823 error = nd->nd_repstat;
4824 nfsmout:
4825 m_freem(nd->nd_mrep);
4826 return (error);
4827 }
4828
4829 /*
4830 * Do the NFSv4.1 Create Session.
4831 */
4832 int
4833 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
4834 struct nfssockreq *nrp, struct nfsclds *dsp, uint32_t sequenceid, int mds,
4835 struct ucred *cred, NFSPROC_T *p)
4836 {
4837 uint32_t crflags, maxval, *tl;
4838 struct nfsrv_descript nfsd;
4839 struct nfsrv_descript *nd = &nfsd;
4840 int error, irdcnt, minorvers;
4841
4842 /* Make sure nm_rsize, nm_wsize is set. */
4843 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0)
4844 nmp->nm_rsize = NFS_MAXBSIZE;
4845 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0)
4846 nmp->nm_wsize = NFS_MAXBSIZE;
4847 if (dsp == NULL)
4848 minorvers = nmp->nm_minorvers;
4849 else if ((dsp->nfsclds_flags & NFSCLDS_MINORV2) != 0)
4850 minorvers = NFSV42_MINORVERSION;
4851 else
4852 minorvers = NFSV41_MINORVERSION;
4853 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL,
4854 NFS_VER4, minorvers);
4855 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
4856 *tl++ = sep->nfsess_clientid.lval[0];
4857 *tl++ = sep->nfsess_clientid.lval[1];
4858 *tl++ = txdr_unsigned(sequenceid);
4859 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST);
4860 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0)
4861 crflags |= NFSV4CRSESS_CONNBACKCHAN;
4862 *tl = txdr_unsigned(crflags);
4863
4864 /* Fill in fore channel attributes. */
4865 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4866 *tl++ = 0; /* Header pad size */
4867 if ((nd->nd_flag & ND_NFSV42) != 0 && mds != 0 && sb_max_adj >=
4868 nmp->nm_wsize && sb_max_adj >= nmp->nm_rsize) {
4869 /*
4870 * NFSv4.2 Extended Attribute operations may want to do
4871 * requests/replies that are larger than nm_rsize/nm_wsize.
4872 */
4873 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR);
4874 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR);
4875 } else {
4876 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR);
4877 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR);
4878 }
4879 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4880 *tl++ = txdr_unsigned(20); /* Max operations */
4881 *tl++ = txdr_unsigned(64); /* Max slots */
4882 *tl = 0; /* No rdma ird */
4883
4884 /* Fill in back channel attributes. */
4885 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4886 *tl++ = 0; /* Header pad size */
4887 *tl++ = txdr_unsigned(10000); /* Max request size */
4888 *tl++ = txdr_unsigned(10000); /* Max response size */
4889 *tl++ = txdr_unsigned(4096); /* Max response size cached */
4890 *tl++ = txdr_unsigned(4); /* Max operations */
4891 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */
4892 *tl = 0; /* No rdma ird */
4893
4894 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED);
4895 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */
4896
4897 /* Allow AUTH_SYS callbacks as uid, gid == 0. */
4898 *tl++ = txdr_unsigned(1); /* Auth_sys only */
4899 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */
4900 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */
4901 *tl++ = 0; /* Null machine name */
4902 *tl++ = 0; /* Uid == 0 */
4903 *tl++ = 0; /* Gid == 0 */
4904 *tl = 0; /* No additional gids */
4905 nd->nd_flag |= ND_USEGSSNAME;
4906 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG,
4907 NFS_VER4, NULL, 1, NULL, NULL);
4908 if (error != 0)
4909 return (error);
4910 if (nd->nd_repstat == 0) {
4911 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
4912 2 * NFSX_UNSIGNED);
4913 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID);
4914 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
4915 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++);
4916 crflags = fxdr_unsigned(uint32_t, *tl);
4917 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) {
4918 NFSLOCKMNT(nmp);
4919 nmp->nm_state |= NFSSTA_SESSPERSIST;
4920 NFSUNLOCKMNT(nmp);
4921 }
4922
4923 /* Get the fore channel slot count. */
4924 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4925 tl++; /* Skip the header pad size. */
4926
4927 /* Make sure nm_wsize is small enough. */
4928 maxval = fxdr_unsigned(uint32_t, *tl++);
4929 while (maxval < nmp->nm_wsize + NFS_MAXXDR) {
4930 if (nmp->nm_wsize > 8096)
4931 nmp->nm_wsize /= 2;
4932 else
4933 break;
4934 }
4935 sep->nfsess_maxreq = maxval;
4936
4937 /* Make sure nm_rsize is small enough. */
4938 maxval = fxdr_unsigned(uint32_t, *tl++);
4939 while (maxval < nmp->nm_rsize + NFS_MAXXDR) {
4940 if (nmp->nm_rsize > 8096)
4941 nmp->nm_rsize /= 2;
4942 else
4943 break;
4944 }
4945 sep->nfsess_maxresp = maxval;
4946
4947 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++);
4948 tl++;
4949 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++);
4950 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots);
4951 irdcnt = fxdr_unsigned(int, *tl);
4952 if (irdcnt > 0)
4953 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED);
4954
4955 /* and the back channel slot count. */
4956 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4957 tl += 5;
4958 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl);
4959 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots);
4960 }
4961 error = nd->nd_repstat;
4962 nfsmout:
4963 m_freem(nd->nd_mrep);
4964 return (error);
4965 }
4966
4967 /*
4968 * Do the NFSv4.1 Destroy Session.
4969 */
4970 int
4971 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp,
4972 struct ucred *cred, NFSPROC_T *p)
4973 {
4974 uint32_t *tl;
4975 struct nfsrv_descript nfsd;
4976 struct nfsrv_descript *nd = &nfsd;
4977 int error;
4978 struct nfsclsession *tsep;
4979
4980 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0,
4981 0);
4982 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID);
4983 tsep = nfsmnt_mdssession(nmp);
4984 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID);
4985 nd->nd_flag |= ND_USEGSSNAME;
4986 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4987 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4988 if (error != 0)
4989 return (error);
4990 error = nd->nd_repstat;
4991 m_freem(nd->nd_mrep);
4992 return (error);
4993 }
4994
4995 /*
4996 * Do the NFSv4.1 Destroy Client.
4997 */
4998 int
4999 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp,
5000 struct ucred *cred, NFSPROC_T *p)
5001 {
5002 uint32_t *tl;
5003 struct nfsrv_descript nfsd;
5004 struct nfsrv_descript *nd = &nfsd;
5005 int error;
5006 struct nfsclsession *tsep;
5007
5008 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0,
5009 0);
5010 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
5011 tsep = nfsmnt_mdssession(nmp);
5012 *tl++ = tsep->nfsess_clientid.lval[0];
5013 *tl = tsep->nfsess_clientid.lval[1];
5014 nd->nd_flag |= ND_USEGSSNAME;
5015 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5016 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5017 if (error != 0)
5018 return (error);
5019 error = nd->nd_repstat;
5020 m_freem(nd->nd_mrep);
5021 return (error);
5022 }
5023
5024 /*
5025 * Do the NFSv4.1 LayoutGet.
5026 */
5027 static int
5028 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
5029 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype,
5030 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep,
5031 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p,
5032 void *stuff)
5033 {
5034 struct nfsrv_descript nfsd, *nd = &nfsd;
5035 int error;
5036
5037 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0,
5038 0);
5039 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp,
5040 layouttype, layoutlen, 0);
5041 nd->nd_flag |= ND_USEGSSNAME;
5042 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5043 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5044 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat);
5045 if (error != 0)
5046 return (error);
5047 if (nd->nd_repstat == 0)
5048 error = nfsrv_parselayoutget(nmp, nd, stateidp, retonclosep,
5049 flhp);
5050 if (error == 0 && nd->nd_repstat != 0)
5051 error = nd->nd_repstat;
5052 m_freem(nd->nd_mrep);
5053 return (error);
5054 }
5055
5056 /*
5057 * Do the NFSv4.1 Get Device Info.
5058 */
5059 int
5060 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype,
5061 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred,
5062 NFSPROC_T *p)
5063 {
5064 uint32_t cnt, *tl, vers, minorvers;
5065 struct nfsrv_descript nfsd;
5066 struct nfsrv_descript *nd = &nfsd;
5067 struct sockaddr_in sin, ssin;
5068 struct sockaddr_in6 sin6, ssin6;
5069 struct nfsclds *dsp = NULL, **dspp, **gotdspp;
5070 struct nfscldevinfo *ndi;
5071 int addrcnt = 0, bitcnt, error, gotminor, gotvers, i, isudp, j;
5072 int stripecnt;
5073 uint8_t stripeindex;
5074 sa_family_t af, safilled;
5075
5076 ssin.sin_port = 0; /* To shut up compiler. */
5077 ssin.sin_addr.s_addr = 0; /* ditto */
5078 *ndip = NULL;
5079 ndi = NULL;
5080 gotdspp = NULL;
5081 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0,
5082 0);
5083 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
5084 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID);
5085 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
5086 *tl++ = txdr_unsigned(layouttype);
5087 *tl++ = txdr_unsigned(100000);
5088 if (notifybitsp != NULL && *notifybitsp != 0) {
5089 *tl = txdr_unsigned(1); /* One word of bits. */
5090 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
5091 *tl = txdr_unsigned(*notifybitsp);
5092 } else
5093 *tl = txdr_unsigned(0);
5094 nd->nd_flag |= ND_USEGSSNAME;
5095 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5096 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5097 if (error != 0)
5098 return (error);
5099 if (nd->nd_repstat == 0) {
5100 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
5101 if (layouttype != fxdr_unsigned(int, *tl))
5102 printf("EEK! devinfo layout type not same!\n");
5103 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) {
5104 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5105 stripecnt = fxdr_unsigned(int, *tl);
5106 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
5107 if (stripecnt < 1 || stripecnt > 4096) {
5108 printf("pNFS File layout devinfo stripecnt %d:"
5109 " out of range\n", stripecnt);
5110 error = NFSERR_BADXDR;
5111 goto nfsmout;
5112 }
5113 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) *
5114 NFSX_UNSIGNED);
5115 addrcnt = fxdr_unsigned(int, *(tl + stripecnt));
5116 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt);
5117 if (addrcnt < 1 || addrcnt > 128) {
5118 printf("NFS devinfo addrcnt %d: out of range\n",
5119 addrcnt);
5120 error = NFSERR_BADXDR;
5121 goto nfsmout;
5122 }
5123
5124 /*
5125 * Now we know how many stripe indices and addresses, so
5126 * we can allocate the structure the correct size.
5127 */
5128 i = (stripecnt * sizeof(uint8_t)) /
5129 sizeof(struct nfsclds *) + 1;
5130 NFSCL_DEBUG(4, "stripeindices=%d\n", i);
5131 ndi = malloc(sizeof(*ndi) + (addrcnt + i) *
5132 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK |
5133 M_ZERO);
5134 NFSBCOPY(deviceid, ndi->nfsdi_deviceid,
5135 NFSX_V4DEVICEID);
5136 ndi->nfsdi_refcnt = 0;
5137 ndi->nfsdi_flags = NFSDI_FILELAYOUT;
5138 ndi->nfsdi_stripecnt = stripecnt;
5139 ndi->nfsdi_addrcnt = addrcnt;
5140 /* Fill in the stripe indices. */
5141 for (i = 0; i < stripecnt; i++) {
5142 stripeindex = fxdr_unsigned(uint8_t, *tl++);
5143 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex);
5144 if (stripeindex >= addrcnt) {
5145 printf("pNFS File Layout devinfo"
5146 " stripeindex %d: too big\n",
5147 (int)stripeindex);
5148 error = NFSERR_BADXDR;
5149 goto nfsmout;
5150 }
5151 nfsfldi_setstripeindex(ndi, i, stripeindex);
5152 }
5153 } else if (layouttype == NFSLAYOUT_FLEXFILE) {
5154 /* For Flex File, we only get one address list. */
5155 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *),
5156 M_NFSDEVINFO, M_WAITOK | M_ZERO);
5157 NFSBCOPY(deviceid, ndi->nfsdi_deviceid,
5158 NFSX_V4DEVICEID);
5159 ndi->nfsdi_refcnt = 0;
5160 ndi->nfsdi_flags = NFSDI_FLEXFILE;
5161 addrcnt = ndi->nfsdi_addrcnt = 1;
5162 }
5163
5164 /* Now, dissect the server address(es). */
5165 safilled = AF_UNSPEC;
5166 for (i = 0; i < addrcnt; i++) {
5167 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5168 cnt = fxdr_unsigned(uint32_t, *tl);
5169 if (cnt == 0) {
5170 printf("NFS devinfo 0 len addrlist\n");
5171 error = NFSERR_BADXDR;
5172 goto nfsmout;
5173 }
5174 dspp = nfsfldi_addr(ndi, i);
5175 safilled = AF_UNSPEC;
5176 for (j = 0; j < cnt; j++) {
5177 error = nfsv4_getipaddr(nd, &sin, &sin6, &af,
5178 &isudp);
5179 if (error != 0 && error != EPERM) {
5180 error = NFSERR_BADXDR;
5181 goto nfsmout;
5182 }
5183 if (error == 0 && isudp == 0) {
5184 /*
5185 * The priority is:
5186 * - Same address family.
5187 * Save the address and dspp, so that
5188 * the connection can be done after
5189 * parsing is complete.
5190 */
5191 if (safilled == AF_UNSPEC ||
5192 (af == nmp->nm_nam->sa_family &&
5193 safilled != nmp->nm_nam->sa_family)
5194 ) {
5195 if (af == AF_INET)
5196 ssin = sin;
5197 else
5198 ssin6 = sin6;
5199 safilled = af;
5200 gotdspp = dspp;
5201 }
5202 }
5203 }
5204 }
5205
5206 gotvers = NFS_VER4; /* Default NFSv4.1 for File Layout. */
5207 gotminor = NFSV41_MINORVERSION;
5208 /* For Flex File, we will take one of the versions to use. */
5209 if (layouttype == NFSLAYOUT_FLEXFILE) {
5210 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5211 j = fxdr_unsigned(int, *tl);
5212 if (j < 1 || j > NFSDEV_MAXVERS) {
5213 printf("pNFS: too many versions\n");
5214 error = NFSERR_BADXDR;
5215 goto nfsmout;
5216 }
5217 gotvers = 0;
5218 gotminor = 0;
5219 for (i = 0; i < j; i++) {
5220 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED);
5221 vers = fxdr_unsigned(uint32_t, *tl++);
5222 minorvers = fxdr_unsigned(uint32_t, *tl++);
5223 if (vers == NFS_VER3)
5224 minorvers = 0;
5225 if ((vers == NFS_VER4 && ((minorvers ==
5226 NFSV41_MINORVERSION && gotminor == 0) ||
5227 minorvers == NFSV42_MINORVERSION)) ||
5228 (vers == NFS_VER3 && gotvers == 0)) {
5229 gotvers = vers;
5230 gotminor = minorvers;
5231 /* We'll take this one. */
5232 ndi->nfsdi_versindex = i;
5233 ndi->nfsdi_vers = vers;
5234 ndi->nfsdi_minorvers = minorvers;
5235 ndi->nfsdi_rsize = fxdr_unsigned(
5236 uint32_t, *tl++);
5237 ndi->nfsdi_wsize = fxdr_unsigned(
5238 uint32_t, *tl++);
5239 if (*tl == newnfs_true)
5240 ndi->nfsdi_flags |=
5241 NFSDI_TIGHTCOUPLED;
5242 else
5243 ndi->nfsdi_flags &=
5244 ~NFSDI_TIGHTCOUPLED;
5245 }
5246 }
5247 if (gotvers == 0) {
5248 printf("pNFS: no NFSv3, NFSv4.1 or NFSv4.2\n");
5249 error = NFSERR_BADXDR;
5250 goto nfsmout;
5251 }
5252 }
5253
5254 /* And the notify bits. */
5255 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5256 bitcnt = fxdr_unsigned(int, *tl);
5257 if (bitcnt > 0) {
5258 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5259 if (notifybitsp != NULL)
5260 *notifybitsp =
5261 fxdr_unsigned(uint32_t, *tl);
5262 }
5263 if (safilled != AF_UNSPEC) {
5264 KASSERT(ndi != NULL, ("ndi is NULL"));
5265 *ndip = ndi;
5266 } else
5267 error = EPERM;
5268 if (error == 0) {
5269 /*
5270 * Now we can do a TCP connection for the correct
5271 * NFS version and IP address.
5272 */
5273 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled,
5274 gotvers, gotminor, &dsp, p);
5275 }
5276 if (error == 0) {
5277 KASSERT(gotdspp != NULL, ("gotdspp is NULL"));
5278 *gotdspp = dsp;
5279 }
5280 }
5281 if (nd->nd_repstat != 0 && error == 0)
5282 error = nd->nd_repstat;
5283 nfsmout:
5284 if (error != 0 && ndi != NULL)
5285 nfscl_freedevinfo(ndi);
5286 m_freem(nd->nd_mrep);
5287 return (error);
5288 }
5289
5290 /*
5291 * Do the NFSv4.1 LayoutCommit.
5292 */
5293 int
5294 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5295 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp,
5296 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff)
5297 {
5298 uint32_t *tl;
5299 struct nfsrv_descript nfsd, *nd = &nfsd;
5300 int error;
5301
5302 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL,
5303 0, 0);
5304 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
5305 NFSX_STATEID);
5306 txdr_hyper(off, tl);
5307 tl += 2;
5308 txdr_hyper(len, tl);
5309 tl += 2;
5310 if (reclaim != 0)
5311 *tl++ = newnfs_true;
5312 else
5313 *tl++ = newnfs_false;
5314 *tl++ = txdr_unsigned(stateidp->seqid);
5315 *tl++ = stateidp->other[0];
5316 *tl++ = stateidp->other[1];
5317 *tl++ = stateidp->other[2];
5318 *tl++ = newnfs_true;
5319 if (lastbyte < off)
5320 lastbyte = off;
5321 else if (lastbyte >= (off + len))
5322 lastbyte = off + len - 1;
5323 txdr_hyper(lastbyte, tl);
5324 tl += 2;
5325 *tl++ = newnfs_false;
5326 *tl++ = txdr_unsigned(layouttype);
5327 /* All supported layouts are 0 length. */
5328 *tl = txdr_unsigned(0);
5329 nd->nd_flag |= ND_USEGSSNAME;
5330 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5331 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5332 if (error != 0)
5333 return (error);
5334 error = nd->nd_repstat;
5335 m_freem(nd->nd_mrep);
5336 return (error);
5337 }
5338
5339 /*
5340 * Do the NFSv4.1 LayoutReturn.
5341 */
5342 int
5343 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5344 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset,
5345 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
5346 uint32_t stat, uint32_t op, char *devid)
5347 {
5348 uint32_t *tl;
5349 struct nfsrv_descript nfsd, *nd = &nfsd;
5350 uint64_t tu64;
5351 int error;
5352
5353 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL,
5354 0, 0);
5355 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
5356 if (reclaim != 0)
5357 *tl++ = newnfs_true;
5358 else
5359 *tl++ = newnfs_false;
5360 *tl++ = txdr_unsigned(layouttype);
5361 *tl++ = txdr_unsigned(iomode);
5362 *tl = txdr_unsigned(layoutreturn);
5363 if (layoutreturn == NFSLAYOUTRETURN_FILE) {
5364 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
5365 NFSX_UNSIGNED);
5366 txdr_hyper(offset, tl);
5367 tl += 2;
5368 txdr_hyper(len, tl);
5369 tl += 2;
5370 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid);
5371 *tl++ = txdr_unsigned(stateidp->seqid);
5372 *tl++ = stateidp->other[0];
5373 *tl++ = stateidp->other[1];
5374 *tl++ = stateidp->other[2];
5375 if (layouttype == NFSLAYOUT_NFSV4_1_FILES)
5376 *tl = txdr_unsigned(0);
5377 else if (layouttype == NFSLAYOUT_FLEXFILE) {
5378 if (stat != 0) {
5379 *tl = txdr_unsigned(2 * NFSX_HYPER +
5380 NFSX_STATEID + NFSX_V4DEVICEID + 5 *
5381 NFSX_UNSIGNED);
5382 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER +
5383 NFSX_STATEID + NFSX_V4DEVICEID + 5 *
5384 NFSX_UNSIGNED);
5385 *tl++ = txdr_unsigned(1); /* One error. */
5386 tu64 = 0; /* Offset. */
5387 txdr_hyper(tu64, tl); tl += 2;
5388 tu64 = UINT64_MAX; /* Length. */
5389 txdr_hyper(tu64, tl); tl += 2;
5390 NFSBCOPY(stateidp, tl, NFSX_STATEID);
5391 tl += (NFSX_STATEID / NFSX_UNSIGNED);
5392 *tl++ = txdr_unsigned(1); /* One error. */
5393 NFSBCOPY(devid, tl, NFSX_V4DEVICEID);
5394 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
5395 *tl++ = txdr_unsigned(stat);
5396 *tl++ = txdr_unsigned(op);
5397 } else {
5398 *tl = txdr_unsigned(2 * NFSX_UNSIGNED);
5399 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
5400 /* No ioerrs. */
5401 *tl++ = 0;
5402 }
5403 *tl = 0; /* No stats yet. */
5404 }
5405 }
5406 nd->nd_flag |= ND_USEGSSNAME;
5407 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5408 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5409 if (error != 0)
5410 return (error);
5411 if (nd->nd_repstat == 0) {
5412 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5413 if (*tl != 0) {
5414 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
5415 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
5416 stateidp->other[0] = *tl++;
5417 stateidp->other[1] = *tl++;
5418 stateidp->other[2] = *tl;
5419 }
5420 } else
5421 error = nd->nd_repstat;
5422 nfsmout:
5423 m_freem(nd->nd_mrep);
5424 return (error);
5425 }
5426
5427 /*
5428 * Acquire a layout and devinfo, if possible. The caller must have acquired
5429 * a reference count on the nfsclclient structure before calling this.
5430 * Return the layout in lypp with a reference count on it, if successful.
5431 */
5432 static int
5433 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp,
5434 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off,
5435 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
5436 {
5437 struct nfscllayout *lyp;
5438 struct nfsclflayout *flp;
5439 struct nfsclflayouthead flh;
5440 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose;
5441 nfsv4stateid_t stateid;
5442 struct nfsclsession *tsep;
5443
5444 *lypp = NULL;
5445 if (NFSHASFLEXFILE(nmp))
5446 layouttype = NFSLAYOUT_FLEXFILE;
5447 else
5448 layouttype = NFSLAYOUT_NFSV4_1_FILES;
5449 /*
5450 * If lyp is returned non-NULL, there will be a refcnt (shared lock)
5451 * on it, iff flp != NULL or a lock (exclusive lock) on it iff
5452 * flp == NULL.
5453 */
5454 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len,
5455 off, &flp, &recalled);
5456 islocked = 0;
5457 if (lyp == NULL || flp == NULL) {
5458 if (recalled != 0)
5459 return (EIO);
5460 LIST_INIT(&flh);
5461 tsep = nfsmnt_mdssession(nmp);
5462 layoutlen = tsep->nfsess_maxcache -
5463 (NFSX_STATEID + 3 * NFSX_UNSIGNED);
5464 if (lyp == NULL) {
5465 stateid.seqid = 0;
5466 stateid.other[0] = stateidp->other[0];
5467 stateid.other[1] = stateidp->other[1];
5468 stateid.other[2] = stateidp->other[2];
5469 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5470 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX,
5471 (uint64_t)0, layouttype, layoutlen, &stateid,
5472 &retonclose, &flh, cred, p, NULL);
5473 } else {
5474 islocked = 1;
5475 stateid.seqid = lyp->nfsly_stateid.seqid;
5476 stateid.other[0] = lyp->nfsly_stateid.other[0];
5477 stateid.other[1] = lyp->nfsly_stateid.other[1];
5478 stateid.other[2] = lyp->nfsly_stateid.other[2];
5479 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5480 nfhp->nfh_len, iomode, off, UINT64_MAX,
5481 (uint64_t)0, layouttype, layoutlen, &stateid,
5482 &retonclose, &flh, cred, p, NULL);
5483 }
5484 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh,
5485 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp,
5486 &flh, layouttype, error, NULL, cred, p);
5487 if (error == 0)
5488 *lypp = lyp;
5489 else if (islocked != 0)
5490 nfscl_rellayout(lyp, 1);
5491 } else
5492 *lypp = lyp;
5493 return (error);
5494 }
5495
5496 /*
5497 * Do a TCP connection plus exchange id and create session.
5498 * If successful, a "struct nfsclds" is linked into the list for the
5499 * mount point and a pointer to it is returned.
5500 */
5501 static int
5502 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin,
5503 struct sockaddr_in6 *sin6, sa_family_t af, int vers, int minorvers,
5504 struct nfsclds **dspp, NFSPROC_T *p)
5505 {
5506 struct sockaddr_in *msad, *sad;
5507 struct sockaddr_in6 *msad6, *sad6;
5508 struct nfsclclient *clp;
5509 struct nfssockreq *nrp;
5510 struct nfsclds *dsp, *tdsp;
5511 int error, firsttry;
5512 enum nfsclds_state retv;
5513 uint32_t sequenceid = 0;
5514
5515 KASSERT(nmp->nm_sockreq.nr_cred != NULL,
5516 ("nfsrpc_fillsa: NULL nr_cred"));
5517 NFSLOCKCLSTATE();
5518 clp = nmp->nm_clp;
5519 NFSUNLOCKCLSTATE();
5520 if (clp == NULL)
5521 return (EPERM);
5522 if (af == AF_INET) {
5523 NFSLOCKMNT(nmp);
5524 /*
5525 * Check to see if we already have a session for this
5526 * address that is usable for a DS.
5527 * Note that the MDS's address is in a different place
5528 * than the sessions already acquired for DS's.
5529 */
5530 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam;
5531 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5532 while (tdsp != NULL) {
5533 if (msad != NULL && msad->sin_family == AF_INET &&
5534 sin->sin_addr.s_addr == msad->sin_addr.s_addr &&
5535 sin->sin_port == msad->sin_port &&
5536 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
5537 tdsp->nfsclds_sess.nfsess_defunct == 0) {
5538 *dspp = tdsp;
5539 NFSUNLOCKMNT(nmp);
5540 NFSCL_DEBUG(4, "fnd same addr\n");
5541 return (0);
5542 }
5543 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5544 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5545 msad = (struct sockaddr_in *)
5546 tdsp->nfsclds_sockp->nr_nam;
5547 else
5548 msad = NULL;
5549 }
5550 NFSUNLOCKMNT(nmp);
5551
5552 /* No IP address match, so look for new/trunked one. */
5553 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO);
5554 sad->sin_len = sizeof(*sad);
5555 sad->sin_family = AF_INET;
5556 sad->sin_port = sin->sin_port;
5557 sad->sin_addr.s_addr = sin->sin_addr.s_addr;
5558 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5559 nrp->nr_nam = (struct sockaddr *)sad;
5560 } else if (af == AF_INET6) {
5561 NFSLOCKMNT(nmp);
5562 /*
5563 * Check to see if we already have a session for this
5564 * address that is usable for a DS.
5565 * Note that the MDS's address is in a different place
5566 * than the sessions already acquired for DS's.
5567 */
5568 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam;
5569 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5570 while (tdsp != NULL) {
5571 if (msad6 != NULL && msad6->sin6_family == AF_INET6 &&
5572 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr,
5573 &msad6->sin6_addr) &&
5574 sin6->sin6_port == msad6->sin6_port &&
5575 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
5576 tdsp->nfsclds_sess.nfsess_defunct == 0) {
5577 *dspp = tdsp;
5578 NFSUNLOCKMNT(nmp);
5579 return (0);
5580 }
5581 tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5582 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5583 msad6 = (struct sockaddr_in6 *)
5584 tdsp->nfsclds_sockp->nr_nam;
5585 else
5586 msad6 = NULL;
5587 }
5588 NFSUNLOCKMNT(nmp);
5589
5590 /* No IP address match, so look for new/trunked one. */
5591 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO);
5592 sad6->sin6_len = sizeof(*sad6);
5593 sad6->sin6_family = AF_INET6;
5594 sad6->sin6_port = sin6->sin6_port;
5595 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr,
5596 sizeof(struct in6_addr));
5597 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5598 nrp->nr_nam = (struct sockaddr *)sad6;
5599 } else
5600 return (EPERM);
5601
5602 nrp->nr_sotype = SOCK_STREAM;
5603 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF);
5604 nrp->nr_prog = NFS_PROG;
5605 nrp->nr_vers = vers;
5606
5607 /*
5608 * Use the credentials that were used for the mount, which are
5609 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc.
5610 * Ref. counting the credentials with crhold() is probably not
5611 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until
5612 * unmount, but I did it anyhow.
5613 */
5614 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred);
5615 error = newnfs_connect(nmp, nrp, NULL, p, 0, false);
5616 NFSCL_DEBUG(3, "DS connect=%d\n", error);
5617
5618 dsp = NULL;
5619 /* Now, do the exchangeid and create session. */
5620 if (error == 0) {
5621 if (vers == NFS_VER4) {
5622 firsttry = 0;
5623 do {
5624 error = nfsrpc_exchangeid(nmp, clp, nrp,
5625 minorvers, NFSV4EXCH_USEPNFSDS, &dsp,
5626 nrp->nr_cred, p);
5627 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
5628 if (error == NFSERR_MINORVERMISMATCH)
5629 minorvers = NFSV42_MINORVERSION;
5630 } while (error == NFSERR_MINORVERMISMATCH &&
5631 firsttry++ == 0);
5632 if (error != 0)
5633 newnfs_disconnect(nrp);
5634 } else {
5635 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS,
5636 M_WAITOK | M_ZERO);
5637 dsp->nfsclds_flags |= NFSCLDS_DS;
5638 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */
5639 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
5640 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
5641 NULL, MTX_DEF);
5642 }
5643 }
5644 if (error == 0) {
5645 dsp->nfsclds_sockp = nrp;
5646 if (vers == NFS_VER4) {
5647 NFSLOCKMNT(nmp);
5648 retv = nfscl_getsameserver(nmp, dsp, &tdsp,
5649 &sequenceid);
5650 NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
5651 if (retv == NFSDSP_USETHISSESSION &&
5652 nfscl_dssameconn != 0) {
5653 NFSLOCKDS(tdsp);
5654 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN;
5655 NFSUNLOCKDS(tdsp);
5656 NFSUNLOCKMNT(nmp);
5657 /*
5658 * If there is already a session for this
5659 * server, use it.
5660 */
5661 (void)newnfs_disconnect(nrp);
5662 nfscl_freenfsclds(dsp);
5663 *dspp = tdsp;
5664 return (0);
5665 }
5666 if (retv == NFSDSP_NOTFOUND)
5667 sequenceid =
5668 dsp->nfsclds_sess.nfsess_sequenceid;
5669 NFSUNLOCKMNT(nmp);
5670 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
5671 nrp, dsp, sequenceid, 0, nrp->nr_cred, p);
5672 NFSCL_DEBUG(3, "DS createsess=%d\n", error);
5673 }
5674 } else {
5675 NFSFREECRED(nrp->nr_cred);
5676 NFSFREEMUTEX(&nrp->nr_mtx);
5677 free(nrp->nr_nam, M_SONAME);
5678 free(nrp, M_NFSSOCKREQ);
5679 }
5680 if (error == 0) {
5681 NFSCL_DEBUG(3, "add DS session\n");
5682 /*
5683 * Put it at the end of the list. That way the list
5684 * is ordered by when the entry was added. This matters
5685 * since the one done first is the one that should be
5686 * used for sequencid'ing any subsequent create sessions.
5687 */
5688 NFSLOCKMNT(nmp);
5689 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list);
5690 NFSUNLOCKMNT(nmp);
5691 *dspp = dsp;
5692 } else if (dsp != NULL) {
5693 newnfs_disconnect(nrp);
5694 nfscl_freenfsclds(dsp);
5695 }
5696 return (error);
5697 }
5698
5699 /*
5700 * Do the NFSv4.1 Reclaim Complete.
5701 */
5702 int
5703 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
5704 {
5705 uint32_t *tl;
5706 struct nfsrv_descript nfsd;
5707 struct nfsrv_descript *nd = &nfsd;
5708 int error;
5709
5710 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0,
5711 0);
5712 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
5713 *tl = newnfs_false;
5714 nd->nd_flag |= ND_USEGSSNAME;
5715 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5716 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5717 if (error != 0)
5718 return (error);
5719 error = nd->nd_repstat;
5720 m_freem(nd->nd_mrep);
5721 return (error);
5722 }
5723
5724 /*
5725 * Initialize the slot tables for a session.
5726 */
5727 static void
5728 nfscl_initsessionslots(struct nfsclsession *sep)
5729 {
5730 int i;
5731
5732 for (i = 0; i < NFSV4_CBSLOTS; i++) {
5733 if (sep->nfsess_cbslots[i].nfssl_reply != NULL)
5734 m_freem(sep->nfsess_cbslots[i].nfssl_reply);
5735 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot));
5736 }
5737 for (i = 0; i < 64; i++)
5738 sep->nfsess_slotseq[i] = 0;
5739 sep->nfsess_slots = 0;
5740 }
5741
5742 /*
5743 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS).
5744 */
5745 int
5746 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5747 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p)
5748 {
5749 struct nfsnode *np = VTONFS(vp);
5750 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
5751 struct nfscllayout *layp;
5752 struct nfscldevinfo *dip;
5753 struct nfsclflayout *rflp;
5754 struct mbuf *m, *m2;
5755 struct nfsclwritedsdorpc *drpc, *tdrpc;
5756 nfsv4stateid_t stateid;
5757 struct ucred *newcred;
5758 uint64_t lastbyte, len, off, oresid, xfer;
5759 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo;
5760 void *lckp;
5761 uint8_t *dev;
5762 void *iovbase = NULL;
5763 size_t iovlen = 0;
5764 off_t offs = 0;
5765 ssize_t resid = 0;
5766
5767 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
5768 (np->n_flag & NNOLAYOUT) != 0)
5769 return (EIO);
5770 /* Now, get a reference cnt on the clientid for this mount. */
5771 if (nfscl_getref(nmp) == 0)
5772 return (EIO);
5773
5774 /* Find an appropriate stateid. */
5775 newcred = NFSNEWCRED(cred);
5776 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
5777 rwaccess, 1, newcred, p, &stateid, &lckp);
5778 if (error != 0) {
5779 NFSFREECRED(newcred);
5780 nfscl_relref(nmp);
5781 return (error);
5782 }
5783 /* Search for a layout for this file. */
5784 off = uiop->uio_offset;
5785 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh,
5786 np->n_fhp->nfh_len, off, &rflp, &recalled);
5787 if (layp == NULL || rflp == NULL) {
5788 if (recalled != 0) {
5789 NFSFREECRED(newcred);
5790 nfscl_relref(nmp);
5791 return (EIO);
5792 }
5793 if (layp != NULL) {
5794 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0);
5795 layp = NULL;
5796 }
5797 /* Try and get a Layout, if it is supported. */
5798 if (rwaccess == NFSV4OPEN_ACCESSWRITE ||
5799 (np->n_flag & NWRITEOPENED) != 0)
5800 iolaymode = NFSLAYOUTIOMODE_RW;
5801 else
5802 iolaymode = NFSLAYOUTIOMODE_READ;
5803 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode,
5804 NULL, &stateid, off, &layp, newcred, p);
5805 if (error != 0) {
5806 NFSLOCKNODE(np);
5807 np->n_flag |= NNOLAYOUT;
5808 NFSUNLOCKNODE(np);
5809 if (lckp != NULL)
5810 nfscl_lockderef(lckp);
5811 NFSFREECRED(newcred);
5812 if (layp != NULL)
5813 nfscl_rellayout(layp, 0);
5814 nfscl_relref(nmp);
5815 return (error);
5816 }
5817 }
5818
5819 /*
5820 * Loop around finding a layout that works for the first part of
5821 * this I/O operation, and then call the function that actually
5822 * does the RPC.
5823 */
5824 eof = 0;
5825 len = (uint64_t)uiop->uio_resid;
5826 while (len > 0 && error == 0 && eof == 0) {
5827 off = uiop->uio_offset;
5828 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp);
5829 if (error == 0) {
5830 oresid = xfer = (uint64_t)uiop->uio_resid;
5831 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off))
5832 xfer = rflp->nfsfl_end - rflp->nfsfl_off;
5833 /*
5834 * For Flex File layout with mirrored DSs, select one
5835 * of them at random for reads. For writes and commits,
5836 * do all mirrors.
5837 */
5838 m = NULL;
5839 tdrpc = drpc = NULL;
5840 firstmirror = 0;
5841 mirrorcnt = 1;
5842 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 &&
5843 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) {
5844 if (rwaccess == NFSV4OPEN_ACCESSREAD) {
5845 firstmirror = arc4random() % mirrorcnt;
5846 mirrorcnt = firstmirror + 1;
5847 } else {
5848 if (docommit == 0) {
5849 /*
5850 * Save values, so uiop can be
5851 * rolled back upon a write
5852 * error.
5853 */
5854 offs = uiop->uio_offset;
5855 resid = uiop->uio_resid;
5856 iovbase =
5857 uiop->uio_iov->iov_base;
5858 iovlen = uiop->uio_iov->iov_len;
5859 m = nfsm_uiombuflist(uiop, len,
5860 0);
5861 }
5862 tdrpc = drpc = malloc(sizeof(*drpc) *
5863 (mirrorcnt - 1), M_TEMP, M_WAITOK |
5864 M_ZERO);
5865 }
5866 }
5867 for (i = firstmirror; i < mirrorcnt && error == 0; i++){
5868 m2 = NULL;
5869 if (m != NULL && i < mirrorcnt - 1)
5870 m2 = m_copym(m, 0, M_COPYALL, M_WAITOK);
5871 else {
5872 m2 = m;
5873 m = NULL;
5874 }
5875 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) {
5876 dev = rflp->nfsfl_ffm[i].dev;
5877 dip = nfscl_getdevinfo(nmp->nm_clp, dev,
5878 rflp->nfsfl_ffm[i].devp);
5879 } else {
5880 dev = rflp->nfsfl_dev;
5881 dip = nfscl_getdevinfo(nmp->nm_clp, dev,
5882 rflp->nfsfl_devp);
5883 }
5884 if (dip != NULL) {
5885 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE)
5886 != 0)
5887 error = nfscl_dofflayoutio(vp,
5888 uiop, iomode, must_commit,
5889 &eof, &stateid, rwaccess,
5890 dip, layp, rflp, off, xfer,
5891 i, docommit, m2, tdrpc,
5892 newcred, p);
5893 else
5894 error = nfscl_doflayoutio(vp,
5895 uiop, iomode, must_commit,
5896 &eof, &stateid, rwaccess,
5897 dip, layp, rflp, off, xfer,
5898 docommit, newcred, p);
5899 nfscl_reldevinfo(dip);
5900 } else {
5901 if (m2 != NULL)
5902 m_freem(m2);
5903 error = EIO;
5904 }
5905 tdrpc++;
5906 }
5907 if (m != NULL)
5908 m_freem(m);
5909 tdrpc = drpc;
5910 timo = hz / 50; /* Wait for 20msec. */
5911 if (timo < 1)
5912 timo = 1;
5913 for (i = firstmirror; i < mirrorcnt - 1 &&
5914 tdrpc != NULL; i++, tdrpc++) {
5915 /*
5916 * For the unused drpc entries, both inprog and
5917 * err == 0, so this loop won't break.
5918 */
5919 while (tdrpc->inprog != 0 && tdrpc->done == 0)
5920 tsleep(&tdrpc->tsk, PVFS, "clrpcio",
5921 timo);
5922 if (error == 0 && tdrpc->err != 0)
5923 error = tdrpc->err;
5924 }
5925 free(drpc, M_TEMP);
5926 if (error == 0) {
5927 if (mirrorcnt > 1 && rwaccess ==
5928 NFSV4OPEN_ACCESSWRITE && docommit == 0) {
5929 NFSLOCKCLSTATE();
5930 layp->nfsly_flags |= NFSLY_WRITTEN;
5931 NFSUNLOCKCLSTATE();
5932 }
5933 lastbyte = off + xfer - 1;
5934 NFSLOCKCLSTATE();
5935 if (lastbyte > layp->nfsly_lastbyte)
5936 layp->nfsly_lastbyte = lastbyte;
5937 NFSUNLOCKCLSTATE();
5938 } else if (error == NFSERR_OPENMODE &&
5939 rwaccess == NFSV4OPEN_ACCESSREAD) {
5940 NFSLOCKMNT(nmp);
5941 nmp->nm_state |= NFSSTA_OPENMODE;
5942 NFSUNLOCKMNT(nmp);
5943 } else
5944 error = EIO;
5945 if (error == 0)
5946 len -= (oresid - (uint64_t)uiop->uio_resid);
5947 else if (mirrorcnt > 1 && rwaccess ==
5948 NFSV4OPEN_ACCESSWRITE && docommit == 0) {
5949 /*
5950 * In case the rpc gets retried, roll the
5951 * uio fields changed by nfsm_uiombuflist()
5952 * back.
5953 */
5954 uiop->uio_offset = offs;
5955 uiop->uio_resid = resid;
5956 uiop->uio_iov->iov_base = iovbase;
5957 uiop->uio_iov->iov_len = iovlen;
5958 }
5959 }
5960 }
5961 if (lckp != NULL)
5962 nfscl_lockderef(lckp);
5963 NFSFREECRED(newcred);
5964 nfscl_rellayout(layp, 0);
5965 nfscl_relref(nmp);
5966 return (error);
5967 }
5968
5969 /*
5970 * Find a file layout that will handle the first bytes of the requested
5971 * range and return the information from it needed to the I/O operation.
5972 */
5973 int
5974 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,
5975 struct nfsclflayout **retflpp)
5976 {
5977 struct nfsclflayout *flp, *nflp, *rflp;
5978 uint32_t rw;
5979
5980 rflp = NULL;
5981 rw = rwaccess;
5982 /* For reading, do the Read list first and then the Write list. */
5983 do {
5984 if (rw == NFSV4OPEN_ACCESSREAD)
5985 flp = LIST_FIRST(&lyp->nfsly_flayread);
5986 else
5987 flp = LIST_FIRST(&lyp->nfsly_flayrw);
5988 while (flp != NULL) {
5989 nflp = LIST_NEXT(flp, nfsfl_list);
5990 if (flp->nfsfl_off > off)
5991 break;
5992 if (flp->nfsfl_end > off &&
5993 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end))
5994 rflp = flp;
5995 flp = nflp;
5996 }
5997 if (rw == NFSV4OPEN_ACCESSREAD)
5998 rw = NFSV4OPEN_ACCESSWRITE;
5999 else
6000 rw = 0;
6001 } while (rw != 0);
6002 if (rflp != NULL) {
6003 /* This one covers the most bytes starting at off. */
6004 *retflpp = rflp;
6005 return (0);
6006 }
6007 return (EIO);
6008 }
6009
6010 /*
6011 * Do I/O using an NFSv4.1 or NFSv4.2 file layout.
6012 */
6013 static int
6014 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
6015 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
6016 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
6017 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p)
6018 {
6019 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
6020 int commit_thru_mds, error, stripe_index, stripe_pos, minorvers;
6021 struct nfsnode *np;
6022 struct nfsfh *fhp;
6023 struct nfsclds **dspp;
6024
6025 np = VTONFS(vp);
6026 rel_off = off - flp->nfsfl_patoff;
6027 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff;
6028 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
6029 dp->nfsdi_stripecnt;
6030 transfer = stripe_unit_size - (rel_off % stripe_unit_size);
6031 error = 0;
6032
6033 /* Loop around, doing I/O for each stripe unit. */
6034 while (len > 0 && error == 0) {
6035 stripe_index = nfsfldi_stripeindex(dp, stripe_pos);
6036 dspp = nfsfldi_addr(dp, stripe_index);
6037 if (((*dspp)->nfsclds_flags & NFSCLDS_MINORV2) != 0)
6038 minorvers = NFSV42_MINORVERSION;
6039 else
6040 minorvers = NFSV41_MINORVERSION;
6041 if (len > transfer && docommit == 0)
6042 xfer = transfer;
6043 else
6044 xfer = len;
6045 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) {
6046 /* Dense layout. */
6047 if (stripe_pos >= flp->nfsfl_fhcnt)
6048 return (EIO);
6049 fhp = flp->nfsfl_fh[stripe_pos];
6050 io_off = (rel_off / (stripe_unit_size *
6051 dp->nfsdi_stripecnt)) * stripe_unit_size +
6052 rel_off % stripe_unit_size;
6053 } else {
6054 /* Sparse layout. */
6055 if (flp->nfsfl_fhcnt > 1) {
6056 if (stripe_index >= flp->nfsfl_fhcnt)
6057 return (EIO);
6058 fhp = flp->nfsfl_fh[stripe_index];
6059 } else if (flp->nfsfl_fhcnt == 1)
6060 fhp = flp->nfsfl_fh[0];
6061 else
6062 fhp = np->n_fhp;
6063 io_off = off;
6064 }
6065 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) {
6066 commit_thru_mds = 1;
6067 if (docommit != 0)
6068 error = EIO;
6069 } else {
6070 commit_thru_mds = 0;
6071 NFSLOCKNODE(np);
6072 np->n_flag |= NDSCOMMIT;
6073 NFSUNLOCKNODE(np);
6074 }
6075 if (docommit != 0) {
6076 if (error == 0)
6077 error = nfsrpc_commitds(vp, io_off, xfer,
6078 *dspp, fhp, NFS_VER4, minorvers, cred, p);
6079 if (error == 0) {
6080 /*
6081 * Set both eof and uio_resid = 0 to end any
6082 * loops.
6083 */
6084 *eofp = 1;
6085 uiop->uio_resid = 0;
6086 } else {
6087 NFSLOCKNODE(np);
6088 np->n_flag &= ~NDSCOMMIT;
6089 NFSUNLOCKNODE(np);
6090 }
6091 } else if (rwflag == NFSV4OPEN_ACCESSREAD)
6092 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
6093 io_off, xfer, fhp, 0, NFS_VER4, minorvers, cred, p);
6094 else {
6095 error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
6096 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
6097 0, NFS_VER4, minorvers, cred, p);
6098 if (error == 0) {
6099 NFSLOCKCLSTATE();
6100 lyp->nfsly_flags |= NFSLY_WRITTEN;
6101 NFSUNLOCKCLSTATE();
6102 }
6103 }
6104 if (error == 0) {
6105 transfer = stripe_unit_size;
6106 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt;
6107 len -= xfer;
6108 off += xfer;
6109 }
6110 }
6111 return (error);
6112 }
6113
6114 /*
6115 * Do I/O using an NFSv4.1 flex file layout.
6116 */
6117 static int
6118 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
6119 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
6120 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
6121 uint64_t len, int mirror, int docommit, struct mbuf *mp,
6122 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6123 {
6124 uint64_t xfer;
6125 int error;
6126 struct nfsnode *np;
6127 struct nfsfh *fhp;
6128 struct nfsclds **dspp;
6129 struct ucred *tcred;
6130 struct mbuf *m, *m2;
6131 uint32_t copylen;
6132
6133 np = VTONFS(vp);
6134 error = 0;
6135 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off,
6136 (uintmax_t)len);
6137 /* Loop around, doing I/O for each stripe unit. */
6138 while (len > 0 && error == 0) {
6139 dspp = nfsfldi_addr(dp, 0);
6140 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex];
6141 stateidp = &flp->nfsfl_ffm[mirror].st;
6142 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n",
6143 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid);
6144 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) {
6145 tcred = NFSNEWCRED(cred);
6146 tcred->cr_uid = flp->nfsfl_ffm[mirror].user;
6147 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group;
6148 tcred->cr_ngroups = 1;
6149 } else
6150 tcred = cred;
6151 if (rwflag == NFSV4OPEN_ACCESSREAD)
6152 copylen = dp->nfsdi_rsize;
6153 else {
6154 copylen = dp->nfsdi_wsize;
6155 if (len > copylen && mp != NULL) {
6156 /*
6157 * When a mirrored configuration needs to do
6158 * multiple writes to each mirror, all writes
6159 * except the last one must be a multiple of
6160 * 4 bytes. This is required so that the XDR
6161 * does not need padding.
6162 * If possible, clip the size to an exact
6163 * multiple of the mbuf length, so that the
6164 * split will be on an mbuf boundary.
6165 */
6166 copylen &= 0xfffffffc;
6167 if (copylen > mp->m_len)
6168 copylen = copylen / mp->m_len *
6169 mp->m_len;
6170 }
6171 }
6172 NFSLOCKNODE(np);
6173 np->n_flag |= NDSCOMMIT;
6174 NFSUNLOCKNODE(np);
6175 if (len > copylen && docommit == 0)
6176 xfer = copylen;
6177 else
6178 xfer = len;
6179 if (docommit != 0) {
6180 if (error == 0) {
6181 /*
6182 * Do last mirrored DS commit with this thread.
6183 */
6184 if (mirror < flp->nfsfl_mirrorcnt - 1)
6185 error = nfsio_commitds(vp, off, xfer,
6186 *dspp, fhp, dp->nfsdi_vers,
6187 dp->nfsdi_minorvers, drpc, tcred,
6188 p);
6189 else
6190 error = nfsrpc_commitds(vp, off, xfer,
6191 *dspp, fhp, dp->nfsdi_vers,
6192 dp->nfsdi_minorvers, tcred, p);
6193 NFSCL_DEBUG(4, "commitds=%d\n", error);
6194 if (error != 0 && error != EACCES && error !=
6195 ESTALE) {
6196 NFSCL_DEBUG(4,
6197 "DS layreterr for commit\n");
6198 nfscl_dserr(NFSV4OP_COMMIT, error, dp,
6199 lyp, *dspp);
6200 }
6201 }
6202 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error);
6203 if (error == 0) {
6204 /*
6205 * Set both eof and uio_resid = 0 to end any
6206 * loops.
6207 */
6208 *eofp = 1;
6209 uiop->uio_resid = 0;
6210 } else {
6211 NFSLOCKNODE(np);
6212 np->n_flag &= ~NDSCOMMIT;
6213 NFSUNLOCKNODE(np);
6214 }
6215 } else if (rwflag == NFSV4OPEN_ACCESSREAD) {
6216 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
6217 off, xfer, fhp, 1, dp->nfsdi_vers,
6218 dp->nfsdi_minorvers, tcred, p);
6219 NFSCL_DEBUG(4, "readds=%d\n", error);
6220 if (error != 0 && error != EACCES && error != ESTALE) {
6221 NFSCL_DEBUG(4, "DS layreterr for read\n");
6222 nfscl_dserr(NFSV4OP_READ, error, dp, lyp,
6223 *dspp);
6224 }
6225 } else {
6226 if (flp->nfsfl_mirrorcnt == 1) {
6227 error = nfsrpc_writeds(vp, uiop, iomode,
6228 must_commit, stateidp, *dspp, off, xfer,
6229 fhp, 0, 1, dp->nfsdi_vers,
6230 dp->nfsdi_minorvers, tcred, p);
6231 if (error == 0) {
6232 NFSLOCKCLSTATE();
6233 lyp->nfsly_flags |= NFSLY_WRITTEN;
6234 NFSUNLOCKCLSTATE();
6235 }
6236 } else {
6237 m = mp;
6238 if (xfer < len) {
6239 /* The mbuf list must be split. */
6240 m2 = nfsm_split(mp, xfer);
6241 if (m2 != NULL)
6242 mp = m2;
6243 else {
6244 m_freem(mp);
6245 error = EIO;
6246 }
6247 }
6248 NFSCL_DEBUG(4, "mcopy len=%jd xfer=%jd\n",
6249 (uintmax_t)len, (uintmax_t)xfer);
6250 /*
6251 * Do last write to a mirrored DS with this
6252 * thread.
6253 */
6254 if (error == 0) {
6255 if (mirror < flp->nfsfl_mirrorcnt - 1)
6256 error = nfsio_writedsmir(vp,
6257 iomode, must_commit,
6258 stateidp, *dspp, off,
6259 xfer, fhp, m,
6260 dp->nfsdi_vers,
6261 dp->nfsdi_minorvers, drpc,
6262 tcred, p);
6263 else
6264 error = nfsrpc_writedsmir(vp,
6265 iomode, must_commit,
6266 stateidp, *dspp, off,
6267 xfer, fhp, m,
6268 dp->nfsdi_vers,
6269 dp->nfsdi_minorvers, tcred,
6270 p);
6271 }
6272 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error);
6273 if (error != 0 && error != EACCES && error !=
6274 ESTALE) {
6275 NFSCL_DEBUG(4,
6276 "DS layreterr for write\n");
6277 nfscl_dserr(NFSV4OP_WRITE, error, dp,
6278 lyp, *dspp);
6279 }
6280 }
6281 }
6282 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error);
6283 if (error == 0) {
6284 len -= xfer;
6285 off += xfer;
6286 }
6287 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0)
6288 NFSFREECRED(tcred);
6289 }
6290 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error);
6291 return (error);
6292 }
6293
6294 /*
6295 * The actual read RPC done to a DS.
6296 */
6297 static int
6298 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp,
6299 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex,
6300 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p)
6301 {
6302 uint32_t *tl;
6303 int attrflag, error, retlen;
6304 struct nfsrv_descript nfsd;
6305 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
6306 struct nfsrv_descript *nd = &nfsd;
6307 struct nfssockreq *nrp;
6308 struct nfsvattr na;
6309
6310 nd->nd_mrep = NULL;
6311 if (vers == 0 || vers == NFS_VER4) {
6312 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh,
6313 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6314 vers = NFS_VER4;
6315 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers);
6316 if (flex != 0)
6317 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
6318 else
6319 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
6320 } else {
6321 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh,
6322 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6323 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n");
6324 }
6325 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
6326 txdr_hyper(io_off, tl);
6327 *(tl + 2) = txdr_unsigned(len);
6328 nrp = dsp->nfsclds_sockp;
6329 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp);
6330 if (nrp == NULL)
6331 /* If NULL, use the MDS socket. */
6332 nrp = &nmp->nm_sockreq;
6333 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6334 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6335 NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat,
6336 error);
6337 if (error != 0)
6338 return (error);
6339 if (vers == NFS_VER3) {
6340 error = nfscl_postop_attr(nd, &na, &attrflag, NULL);
6341 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error);
6342 if (error != 0)
6343 goto nfsmout;
6344 }
6345 if (nd->nd_repstat != 0) {
6346 error = nd->nd_repstat;
6347 goto nfsmout;
6348 }
6349 if (vers == NFS_VER3) {
6350 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
6351 *eofp = fxdr_unsigned(int, *(tl + 1));
6352 } else {
6353 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
6354 *eofp = fxdr_unsigned(int, *tl);
6355 }
6356 NFSM_STRSIZ(retlen, len);
6357 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp);
6358 error = nfsm_mbufuio(nd, uiop, retlen);
6359 nfsmout:
6360 if (nd->nd_mrep != NULL)
6361 m_freem(nd->nd_mrep);
6362 return (error);
6363 }
6364
6365 /*
6366 * The actual write RPC done to a DS.
6367 */
6368 static int
6369 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
6370 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
6371 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers,
6372 struct ucred *cred, NFSPROC_T *p)
6373 {
6374 uint32_t *tl;
6375 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
6376 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC;
6377 int32_t backup;
6378 struct nfsrv_descript nfsd;
6379 struct nfsrv_descript *nd = &nfsd;
6380 struct nfssockreq *nrp;
6381 struct nfsvattr na;
6382
6383 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
6384 nd->nd_mrep = NULL;
6385 if (vers == 0 || vers == NFS_VER4) {
6386 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh,
6387 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6388 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers);
6389 vers = NFS_VER4;
6390 if (flex != 0)
6391 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
6392 else
6393 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
6394 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
6395 } else {
6396 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh,
6397 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6398 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n");
6399 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED);
6400 }
6401 txdr_hyper(io_off, tl);
6402 tl += 2;
6403 if (vers == NFS_VER3)
6404 *tl++ = txdr_unsigned(len);
6405 *tl++ = txdr_unsigned(*iomode);
6406 *tl = txdr_unsigned(len);
6407 nfsm_uiombuf(nd, uiop, len);
6408 nrp = dsp->nfsclds_sockp;
6409 if (nrp == NULL)
6410 /* If NULL, use the MDS socket. */
6411 nrp = &nmp->nm_sockreq;
6412 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6413 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6414 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error,
6415 nd->nd_repstat);
6416 if (error != 0)
6417 return (error);
6418 if (nd->nd_repstat != 0) {
6419 /*
6420 * In case the rpc gets retried, roll
6421 * the uio fileds changed by nfsm_uiombuf()
6422 * back.
6423 */
6424 uiop->uio_offset -= len;
6425 uiop->uio_resid += len;
6426 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base - len;
6427 uiop->uio_iov->iov_len += len;
6428 error = nd->nd_repstat;
6429 } else {
6430 if (vers == NFS_VER3) {
6431 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
6432 NULL);
6433 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error);
6434 if (error != 0)
6435 goto nfsmout;
6436 }
6437 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
6438 rlen = fxdr_unsigned(int, *tl++);
6439 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen);
6440 if (rlen == 0) {
6441 error = NFSERR_IO;
6442 goto nfsmout;
6443 } else if (rlen < len) {
6444 backup = len - rlen;
6445 uiop->uio_iov->iov_base =
6446 (char *)uiop->uio_iov->iov_base - backup;
6447 uiop->uio_iov->iov_len += backup;
6448 uiop->uio_offset -= backup;
6449 uiop->uio_resid += backup;
6450 len = rlen;
6451 }
6452 commit = fxdr_unsigned(int, *tl++);
6453
6454 /*
6455 * Return the lowest commitment level
6456 * obtained by any of the RPCs.
6457 */
6458 if (committed == NFSWRITE_FILESYNC)
6459 committed = commit;
6460 else if (committed == NFSWRITE_DATASYNC &&
6461 commit == NFSWRITE_UNSTABLE)
6462 committed = commit;
6463 if (commit_thru_mds != 0) {
6464 NFSLOCKMNT(nmp);
6465 if (!NFSHASWRITEVERF(nmp)) {
6466 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
6467 NFSSETWRITEVERF(nmp);
6468 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
6469 *must_commit = 1;
6470 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
6471 }
6472 NFSUNLOCKMNT(nmp);
6473 } else {
6474 NFSLOCKDS(dsp);
6475 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
6476 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6477 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
6478 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
6479 *must_commit = 1;
6480 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6481 }
6482 NFSUNLOCKDS(dsp);
6483 }
6484 }
6485 nfsmout:
6486 if (nd->nd_mrep != NULL)
6487 m_freem(nd->nd_mrep);
6488 *iomode = committed;
6489 if (nd->nd_repstat != 0 && error == 0)
6490 error = nd->nd_repstat;
6491 return (error);
6492 }
6493
6494 /*
6495 * The actual write RPC done to a DS.
6496 * This variant is called from a separate kernel process for mirrors.
6497 * Any short write is considered an IO error.
6498 */
6499 static int
6500 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit,
6501 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
6502 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers,
6503 struct ucred *cred, NFSPROC_T *p)
6504 {
6505 uint32_t *tl;
6506 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
6507 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen;
6508 struct nfsrv_descript nfsd;
6509 struct nfsrv_descript *nd = &nfsd;
6510 struct nfssockreq *nrp;
6511 struct nfsvattr na;
6512
6513 nd->nd_mrep = NULL;
6514 if (vers == 0 || vers == NFS_VER4) {
6515 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh,
6516 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6517 vers = NFS_VER4;
6518 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n",
6519 minorvers);
6520 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
6521 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
6522 } else {
6523 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh,
6524 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6525 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n");
6526 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED);
6527 }
6528 txdr_hyper(io_off, tl);
6529 tl += 2;
6530 if (vers == NFS_VER3)
6531 *tl++ = txdr_unsigned(len);
6532 *tl++ = txdr_unsigned(*iomode);
6533 *tl = txdr_unsigned(len);
6534 if (len > 0) {
6535 /* Put data in mbuf chain. */
6536 nd->nd_mb->m_next = m;
6537 }
6538 nrp = dsp->nfsclds_sockp;
6539 if (nrp == NULL)
6540 /* If NULL, use the MDS socket. */
6541 nrp = &nmp->nm_sockreq;
6542 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6543 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6544 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error,
6545 nd->nd_repstat);
6546 if (error != 0)
6547 return (error);
6548 if (nd->nd_repstat != 0)
6549 error = nd->nd_repstat;
6550 else {
6551 if (vers == NFS_VER3) {
6552 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
6553 NULL);
6554 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n",
6555 error);
6556 if (error != 0)
6557 goto nfsmout;
6558 }
6559 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
6560 rlen = fxdr_unsigned(int, *tl++);
6561 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len,
6562 rlen);
6563 if (rlen != len) {
6564 error = NFSERR_IO;
6565 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n",
6566 len, rlen);
6567 goto nfsmout;
6568 }
6569 commit = fxdr_unsigned(int, *tl++);
6570
6571 /*
6572 * Return the lowest commitment level
6573 * obtained by any of the RPCs.
6574 */
6575 if (committed == NFSWRITE_FILESYNC)
6576 committed = commit;
6577 else if (committed == NFSWRITE_DATASYNC &&
6578 commit == NFSWRITE_UNSTABLE)
6579 committed = commit;
6580 NFSLOCKDS(dsp);
6581 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
6582 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6583 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
6584 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
6585 *must_commit = 1;
6586 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6587 }
6588 NFSUNLOCKDS(dsp);
6589 }
6590 nfsmout:
6591 if (nd->nd_mrep != NULL)
6592 m_freem(nd->nd_mrep);
6593 *iomode = committed;
6594 if (nd->nd_repstat != 0 && error == 0)
6595 error = nd->nd_repstat;
6596 return (error);
6597 }
6598
6599 /*
6600 * Start up the thread that will execute nfsrpc_writedsmir().
6601 */
6602 static void
6603 start_writedsmir(void *arg, int pending)
6604 {
6605 struct nfsclwritedsdorpc *drpc;
6606
6607 drpc = (struct nfsclwritedsdorpc *)arg;
6608 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode,
6609 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len,
6610 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred,
6611 drpc->p);
6612 drpc->done = 1;
6613 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err);
6614 }
6615
6616 /*
6617 * Set up the write DS mirror call for the pNFS I/O thread.
6618 */
6619 static int
6620 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit,
6621 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len,
6622 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers,
6623 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6624 {
6625 int error, ret;
6626
6627 error = 0;
6628 drpc->done = 0;
6629 drpc->vp = vp;
6630 drpc->iomode = *iomode;
6631 drpc->must_commit = *must_commit;
6632 drpc->stateidp = stateidp;
6633 drpc->dsp = dsp;
6634 drpc->off = off;
6635 drpc->len = len;
6636 drpc->fhp = fhp;
6637 drpc->m = m;
6638 drpc->vers = vers;
6639 drpc->minorvers = minorvers;
6640 drpc->cred = cred;
6641 drpc->p = p;
6642 drpc->inprog = 0;
6643 ret = EIO;
6644 if (nfs_pnfsiothreads != 0) {
6645 ret = nfs_pnfsio(start_writedsmir, drpc);
6646 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret);
6647 }
6648 if (ret != 0)
6649 error = nfsrpc_writedsmir(vp, iomode, must_commit, stateidp,
6650 dsp, off, len, fhp, m, vers, minorvers, cred, p);
6651 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error);
6652 return (error);
6653 }
6654
6655 /*
6656 * Free up the nfsclds structure.
6657 */
6658 void
6659 nfscl_freenfsclds(struct nfsclds *dsp)
6660 {
6661 int i;
6662
6663 if (dsp == NULL)
6664 return;
6665 if (dsp->nfsclds_sockp != NULL) {
6666 NFSFREECRED(dsp->nfsclds_sockp->nr_cred);
6667 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx);
6668 free(dsp->nfsclds_sockp->nr_nam, M_SONAME);
6669 free(dsp->nfsclds_sockp, M_NFSSOCKREQ);
6670 }
6671 NFSFREEMUTEX(&dsp->nfsclds_mtx);
6672 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx);
6673 for (i = 0; i < NFSV4_CBSLOTS; i++) {
6674 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL)
6675 m_freem(
6676 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply);
6677 }
6678 free(dsp, M_NFSCLDS);
6679 }
6680
6681 static enum nfsclds_state
6682 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp,
6683 struct nfsclds **retdspp, uint32_t *sequencep)
6684 {
6685 struct nfsclds *dsp;
6686 int fndseq;
6687
6688 /*
6689 * Search the list of nfsclds structures for one with the same
6690 * server.
6691 */
6692 fndseq = 0;
6693 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
6694 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen &&
6695 dsp->nfsclds_servownlen != 0 &&
6696 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown,
6697 dsp->nfsclds_servownlen) &&
6698 dsp->nfsclds_sess.nfsess_defunct == 0) {
6699 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
6700 TAILQ_FIRST(&nmp->nm_sess), dsp,
6701 dsp->nfsclds_flags);
6702 if (fndseq == 0) {
6703 /* Get sequenceid# from first entry. */
6704 *sequencep =
6705 dsp->nfsclds_sess.nfsess_sequenceid;
6706 fndseq = 1;
6707 }
6708 /* Server major id matches. */
6709 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
6710 *retdspp = dsp;
6711 return (NFSDSP_USETHISSESSION);
6712 }
6713 }
6714 }
6715 if (fndseq != 0)
6716 return (NFSDSP_SEQTHISSESSION);
6717 return (NFSDSP_NOTFOUND);
6718 }
6719
6720 /*
6721 * NFS commit rpc to a NFSv4.1 DS.
6722 */
6723 static int
6724 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
6725 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred,
6726 NFSPROC_T *p)
6727 {
6728 uint32_t *tl;
6729 struct nfsrv_descript nfsd, *nd = &nfsd;
6730 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
6731 struct nfssockreq *nrp;
6732 struct nfsvattr na;
6733 int attrflag, error;
6734
6735 nd->nd_mrep = NULL;
6736 if (vers == 0 || vers == NFS_VER4) {
6737 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh,
6738 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6739 vers = NFS_VER4;
6740 } else
6741 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh,
6742 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6743 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers,
6744 minorvers);
6745 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
6746 txdr_hyper(offset, tl);
6747 tl += 2;
6748 *tl = txdr_unsigned(cnt);
6749 nrp = dsp->nfsclds_sockp;
6750 if (nrp == NULL)
6751 /* If NULL, use the MDS socket. */
6752 nrp = &nmp->nm_sockreq;
6753 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6754 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6755 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error,
6756 nd->nd_repstat);
6757 if (error != 0)
6758 return (error);
6759 if (nd->nd_repstat == 0) {
6760 if (vers == NFS_VER3) {
6761 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
6762 NULL);
6763 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error);
6764 if (error != 0)
6765 goto nfsmout;
6766 }
6767 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
6768 NFSLOCKDS(dsp);
6769 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
6770 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6771 error = NFSERR_STALEWRITEVERF;
6772 }
6773 NFSUNLOCKDS(dsp);
6774 }
6775 nfsmout:
6776 if (error == 0 && nd->nd_repstat != 0)
6777 error = nd->nd_repstat;
6778 m_freem(nd->nd_mrep);
6779 return (error);
6780 }
6781
6782 /*
6783 * Start up the thread that will execute nfsrpc_commitds().
6784 */
6785 static void
6786 start_commitds(void *arg, int pending)
6787 {
6788 struct nfsclwritedsdorpc *drpc;
6789
6790 drpc = (struct nfsclwritedsdorpc *)arg;
6791 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len,
6792 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred,
6793 drpc->p);
6794 drpc->done = 1;
6795 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err);
6796 }
6797
6798 /*
6799 * Set up the commit DS mirror call for the pNFS I/O thread.
6800 */
6801 static int
6802 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
6803 struct nfsfh *fhp, int vers, int minorvers,
6804 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6805 {
6806 int error, ret;
6807
6808 error = 0;
6809 drpc->done = 0;
6810 drpc->vp = vp;
6811 drpc->off = offset;
6812 drpc->len = cnt;
6813 drpc->dsp = dsp;
6814 drpc->fhp = fhp;
6815 drpc->vers = vers;
6816 drpc->minorvers = minorvers;
6817 drpc->cred = cred;
6818 drpc->p = p;
6819 drpc->inprog = 0;
6820 ret = EIO;
6821 if (nfs_pnfsiothreads != 0) {
6822 ret = nfs_pnfsio(start_commitds, drpc);
6823 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret);
6824 }
6825 if (ret != 0)
6826 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers,
6827 minorvers, cred, p);
6828 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error);
6829 return (error);
6830 }
6831
6832 /*
6833 * NFS Advise rpc
6834 */
6835 int
6836 nfsrpc_advise(vnode_t vp, off_t offset, uint64_t cnt, int advise,
6837 struct ucred *cred, NFSPROC_T *p)
6838 {
6839 u_int32_t *tl;
6840 struct nfsrv_descript nfsd, *nd = &nfsd;
6841 nfsattrbit_t hints;
6842 int error;
6843
6844 NFSZERO_ATTRBIT(&hints);
6845 if (advise == POSIX_FADV_WILLNEED)
6846 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED);
6847 else if (advise == POSIX_FADV_DONTNEED)
6848 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED);
6849 else
6850 return (0);
6851 NFSCL_REQSTART(nd, NFSPROC_IOADVISE, vp);
6852 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO);
6853 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER);
6854 txdr_hyper(offset, tl);
6855 tl += 2;
6856 txdr_hyper(cnt, tl);
6857 nfsrv_putattrbit(nd, &hints);
6858 error = nfscl_request(nd, vp, p, cred, NULL);
6859 if (error != 0)
6860 return (error);
6861 if (nd->nd_repstat != 0)
6862 error = nd->nd_repstat;
6863 m_freem(nd->nd_mrep);
6864 return (error);
6865 }
6866
6867 #ifdef notyet
6868 /*
6869 * NFS advise rpc to a NFSv4.2 DS.
6870 */
6871 static int
6872 nfsrpc_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise,
6873 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers,
6874 struct ucred *cred, NFSPROC_T *p)
6875 {
6876 uint32_t *tl;
6877 struct nfsrv_descript nfsd, *nd = &nfsd;
6878 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
6879 struct nfssockreq *nrp;
6880 nfsattrbit_t hints;
6881 int error;
6882
6883 /* For NFS DSs prior to NFSv4.2, just return OK. */
6884 if (vers == NFS_VER3 || minorversion < NFSV42_MINORVERSION)
6885 return (0);
6886 NFSZERO_ATTRBIT(&hints);
6887 if (advise == POSIX_FADV_WILLNEED)
6888 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED);
6889 else if (advise == POSIX_FADV_DONTNEED)
6890 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED);
6891 else
6892 return (0);
6893 nd->nd_mrep = NULL;
6894 nfscl_reqstart(nd, NFSPROC_IOADVISEDS, nmp, fhp->nfh_fh,
6895 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6896 vers = NFS_VER4;
6897 NFSCL_DEBUG(4, "nfsrpc_adviseds: vers=%d minvers=%d\n", vers,
6898 minorvers);
6899 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO);
6900 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
6901 txdr_hyper(offset, tl);
6902 tl += 2;
6903 *tl = txdr_unsigned(cnt);
6904 nfsrv_putattrbit(nd, &hints);
6905 nrp = dsp->nfsclds_sockp;
6906 if (nrp == NULL)
6907 /* If NULL, use the MDS socket. */
6908 nrp = &nmp->nm_sockreq;
6909 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6910 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6911 NFSCL_DEBUG(4, "nfsrpc_adviseds: err=%d stat=%d\n", error,
6912 nd->nd_repstat);
6913 if (error != 0)
6914 return (error);
6915 if (nd->nd_repstat != 0)
6916 error = nd->nd_repstat;
6917 m_freem(nd->nd_mrep);
6918 return (error);
6919 }
6920
6921 /*
6922 * Start up the thread that will execute nfsrpc_commitds().
6923 */
6924 static void
6925 start_adviseds(void *arg, int pending)
6926 {
6927 struct nfsclwritedsdorpc *drpc;
6928
6929 drpc = (struct nfsclwritedsdorpc *)arg;
6930 drpc->err = nfsrpc_adviseds(drpc->vp, drpc->off, drpc->len,
6931 drpc->advise, drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers,
6932 drpc->cred, drpc->p);
6933 drpc->done = 1;
6934 NFSCL_DEBUG(4, "start_adviseds: err=%d\n", drpc->err);
6935 }
6936
6937 /*
6938 * Set up the commit DS mirror call for the pNFS I/O thread.
6939 */
6940 static int
6941 nfsio_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise,
6942 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers,
6943 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6944 {
6945 int error, ret;
6946
6947 error = 0;
6948 drpc->done = 0;
6949 drpc->vp = vp;
6950 drpc->off = offset;
6951 drpc->len = cnt;
6952 drpc->advise = advise;
6953 drpc->dsp = dsp;
6954 drpc->fhp = fhp;
6955 drpc->vers = vers;
6956 drpc->minorvers = minorvers;
6957 drpc->cred = cred;
6958 drpc->p = p;
6959 drpc->inprog = 0;
6960 ret = EIO;
6961 if (nfs_pnfsiothreads != 0) {
6962 ret = nfs_pnfsio(start_adviseds, drpc);
6963 NFSCL_DEBUG(4, "nfsio_adviseds: nfs_pnfsio=%d\n", ret);
6964 }
6965 if (ret != 0)
6966 error = nfsrpc_adviseds(vp, offset, cnt, advise, dsp, fhp, vers,
6967 minorvers, cred, p);
6968 NFSCL_DEBUG(4, "nfsio_adviseds: error=%d\n", error);
6969 return (error);
6970 }
6971 #endif /* notyet */
6972
6973 /*
6974 * Do the Allocate operation, retrying for recovery.
6975 */
6976 int
6977 nfsrpc_allocate(vnode_t vp, off_t off, off_t len, struct nfsvattr *nap,
6978 int *attrflagp, struct ucred *cred, NFSPROC_T *p, void *stuff)
6979 {
6980 int error, expireret = 0, retrycnt, nostateid;
6981 uint32_t clidrev = 0;
6982 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
6983 struct nfsfh *nfhp = NULL;
6984 nfsv4stateid_t stateid;
6985 off_t tmp_off;
6986 void *lckp;
6987
6988 if (len < 0)
6989 return (EINVAL);
6990 if (len == 0)
6991 return (0);
6992 tmp_off = off + len;
6993 NFSLOCKMNT(nmp);
6994 if (tmp_off > nmp->nm_maxfilesize || tmp_off < off) {
6995 NFSUNLOCKMNT(nmp);
6996 return (EFBIG);
6997 }
6998 if (nmp->nm_clp != NULL)
6999 clidrev = nmp->nm_clp->nfsc_clientidrev;
7000 NFSUNLOCKMNT(nmp);
7001 nfhp = VTONFS(vp)->n_fhp;
7002 retrycnt = 0;
7003 do {
7004 lckp = NULL;
7005 nostateid = 0;
7006 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
7007 NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp);
7008 if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
7009 stateid.other[2] == 0) {
7010 nostateid = 1;
7011 NFSCL_DEBUG(1, "stateid0 in allocate\n");
7012 }
7013
7014 /*
7015 * Not finding a stateid should probably never happen,
7016 * but just return an error for this case.
7017 */
7018 if (nostateid != 0)
7019 error = EIO;
7020 else
7021 error = nfsrpc_allocaterpc(vp, off, len, &stateid,
7022 nap, attrflagp, cred, p, stuff);
7023 if (error == NFSERR_STALESTATEID)
7024 nfscl_initiate_recovery(nmp->nm_clp);
7025 if (lckp != NULL)
7026 nfscl_lockderef(lckp);
7027 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
7028 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
7029 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
7030 (void) nfs_catnap(PZERO, error, "nfs_allocate");
7031 } else if ((error == NFSERR_EXPIRED ||
7032 error == NFSERR_BADSTATEID) && clidrev != 0) {
7033 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
7034 }
7035 retrycnt++;
7036 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
7037 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
7038 error == NFSERR_STALEDONTRECOVER ||
7039 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
7040 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
7041 expireret == 0 && clidrev != 0 && retrycnt < 4));
7042 if (error != 0 && retrycnt >= 4)
7043 error = EIO;
7044 return (error);
7045 }
7046
7047 /*
7048 * The allocate RPC.
7049 */
7050 static int
7051 nfsrpc_allocaterpc(vnode_t vp, off_t off, off_t len, nfsv4stateid_t *stateidp,
7052 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p,
7053 void *stuff)
7054 {
7055 uint32_t *tl;
7056 int error;
7057 struct nfsrv_descript nfsd;
7058 struct nfsrv_descript *nd = &nfsd;
7059 nfsattrbit_t attrbits;
7060
7061 *attrflagp = 0;
7062 NFSCL_REQSTART(nd, NFSPROC_ALLOCATE, vp);
7063 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
7064 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED);
7065 txdr_hyper(off, tl); tl += 2;
7066 txdr_hyper(len, tl); tl += 2;
7067 *tl = txdr_unsigned(NFSV4OP_GETATTR);
7068 NFSGETATTR_ATTRBIT(&attrbits);
7069 nfsrv_putattrbit(nd, &attrbits);
7070 error = nfscl_request(nd, vp, p, cred, stuff);
7071 if (error != 0)
7072 return (error);
7073 if (nd->nd_repstat == 0) {
7074 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7075 error = nfsm_loadattr(nd, nap);
7076 if (error == 0)
7077 *attrflagp = NFS_LATTR_NOSHRINK;
7078 } else
7079 error = nd->nd_repstat;
7080 nfsmout:
7081 m_freem(nd->nd_mrep);
7082 return (error);
7083 }
7084
7085 /*
7086 * Set up the XDR arguments for the LayoutGet operation.
7087 */
7088 static void
7089 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset,
7090 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype,
7091 int layoutlen, int usecurstateid)
7092 {
7093 uint32_t *tl;
7094
7095 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
7096 NFSX_STATEID);
7097 *tl++ = newnfs_false; /* Don't signal availability. */
7098 *tl++ = txdr_unsigned(layouttype);
7099 *tl++ = txdr_unsigned(iomode);
7100 txdr_hyper(offset, tl);
7101 tl += 2;
7102 txdr_hyper(len, tl);
7103 tl += 2;
7104 txdr_hyper(minlen, tl);
7105 tl += 2;
7106 if (usecurstateid != 0) {
7107 /* Special stateid for Current stateid. */
7108 *tl++ = txdr_unsigned(1);
7109 *tl++ = 0;
7110 *tl++ = 0;
7111 *tl++ = 0;
7112 } else {
7113 *tl++ = txdr_unsigned(stateidp->seqid);
7114 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid);
7115 *tl++ = stateidp->other[0];
7116 *tl++ = stateidp->other[1];
7117 *tl++ = stateidp->other[2];
7118 }
7119 *tl = txdr_unsigned(layoutlen);
7120 }
7121
7122 /*
7123 * Parse the reply for a successful LayoutGet operation.
7124 */
7125 static int
7126 nfsrv_parselayoutget(struct nfsmount *nmp, struct nfsrv_descript *nd,
7127 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp)
7128 {
7129 uint32_t *tl;
7130 struct nfsclflayout *flp, *prevflp, *tflp;
7131 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen;
7132 int m, mirrorcnt;
7133 uint64_t retlen, off;
7134 struct nfsfh *nfhp;
7135 uint8_t *cp;
7136 uid_t user;
7137 gid_t grp;
7138
7139 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n");
7140 error = 0;
7141 flp = NULL;
7142 gotiomode = -1;
7143 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID);
7144 if (*tl++ != 0)
7145 *retonclosep = 1;
7146 else
7147 *retonclosep = 0;
7148 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
7149 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep,
7150 (int)stateidp->seqid);
7151 stateidp->other[0] = *tl++;
7152 stateidp->other[1] = *tl++;
7153 stateidp->other[2] = *tl++;
7154 cnt = fxdr_unsigned(int, *tl);
7155 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt);
7156 if (cnt <= 0 || cnt > 10000) {
7157 /* Don't accept more than 10000 layouts in reply. */
7158 error = NFSERR_BADXDR;
7159 goto nfsmout;
7160 }
7161 for (i = 0; i < cnt; i++) {
7162 /* Dissect to the layout type. */
7163 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER +
7164 3 * NFSX_UNSIGNED);
7165 off = fxdr_hyper(tl); tl += 2;
7166 retlen = fxdr_hyper(tl); tl += 2;
7167 iomode = fxdr_unsigned(int, *tl++);
7168 laytype = fxdr_unsigned(int, *tl);
7169 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype,
7170 (uintmax_t)off, (uintmax_t)retlen, iomode);
7171 /* Ignore length of layout body for now. */
7172 if (laytype == NFSLAYOUT_NFSV4_1_FILES) {
7173 /* Parse the File layout up to fhcnt. */
7174 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED +
7175 NFSX_HYPER + NFSX_V4DEVICEID);
7176 fhcnt = fxdr_unsigned(int, *(tl + 4 +
7177 NFSX_V4DEVICEID / NFSX_UNSIGNED));
7178 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
7179 if (fhcnt < 0 || fhcnt > 100) {
7180 /* Don't accept more than 100 file handles. */
7181 error = NFSERR_BADXDR;
7182 goto nfsmout;
7183 }
7184 if (fhcnt > 0)
7185 flp = malloc(sizeof(*flp) + fhcnt *
7186 sizeof(struct nfsfh *), M_NFSFLAYOUT,
7187 M_WAITOK);
7188 else
7189 flp = malloc(sizeof(*flp), M_NFSFLAYOUT,
7190 M_WAITOK);
7191 flp->nfsfl_flags = NFSFL_FILE;
7192 flp->nfsfl_fhcnt = 0;
7193 flp->nfsfl_devp = NULL;
7194 flp->nfsfl_off = off;
7195 if (flp->nfsfl_off + retlen < flp->nfsfl_off)
7196 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
7197 else
7198 flp->nfsfl_end = flp->nfsfl_off + retlen;
7199 flp->nfsfl_iomode = iomode;
7200 if (gotiomode == -1)
7201 gotiomode = flp->nfsfl_iomode;
7202 /* Ignore layout body length for now. */
7203 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID);
7204 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
7205 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++);
7206 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util);
7207 mtx_lock(&nmp->nm_mtx);
7208 if (nmp->nm_minorvers > 1 && (flp->nfsfl_util &
7209 NFSFLAYUTIL_IOADVISE_THRU_MDS) != 0)
7210 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS;
7211 mtx_unlock(&nmp->nm_mtx);
7212 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
7213 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
7214 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n",
7215 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff);
7216 for (j = 0; j < fhcnt; j++) {
7217 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
7218 nfhlen = fxdr_unsigned(int, *tl);
7219 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) {
7220 error = NFSERR_BADXDR;
7221 goto nfsmout;
7222 }
7223 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1,
7224 M_NFSFH, M_WAITOK);
7225 flp->nfsfl_fh[j] = nfhp;
7226 flp->nfsfl_fhcnt++;
7227 nfhp->nfh_len = nfhlen;
7228 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen));
7229 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen);
7230 }
7231 } else if (laytype == NFSLAYOUT_FLEXFILE) {
7232 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED +
7233 NFSX_HYPER);
7234 mirrorcnt = fxdr_unsigned(int, *(tl + 2));
7235 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt);
7236 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) {
7237 error = NFSERR_BADXDR;
7238 goto nfsmout;
7239 }
7240 flp = malloc(sizeof(*flp) + mirrorcnt *
7241 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK);
7242 flp->nfsfl_flags = NFSFL_FLEXFILE;
7243 flp->nfsfl_mirrorcnt = mirrorcnt;
7244 for (j = 0; j < mirrorcnt; j++)
7245 flp->nfsfl_ffm[j].devp = NULL;
7246 flp->nfsfl_off = off;
7247 if (flp->nfsfl_off + retlen < flp->nfsfl_off)
7248 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
7249 else
7250 flp->nfsfl_end = flp->nfsfl_off + retlen;
7251 flp->nfsfl_iomode = iomode;
7252 if (gotiomode == -1)
7253 gotiomode = flp->nfsfl_iomode;
7254 flp->nfsfl_stripeunit = fxdr_hyper(tl);
7255 NFSCL_DEBUG(4, "stripeunit=%ju\n",
7256 (uintmax_t)flp->nfsfl_stripeunit);
7257 for (j = 0; j < mirrorcnt; j++) {
7258 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
7259 k = fxdr_unsigned(int, *tl);
7260 if (k < 1 || k > 128) {
7261 error = NFSERR_BADXDR;
7262 goto nfsmout;
7263 }
7264 NFSCL_DEBUG(4, "servercnt=%d\n", k);
7265 for (l = 0; l < k; l++) {
7266 NFSM_DISSECT(tl, uint32_t *,
7267 NFSX_V4DEVICEID + NFSX_STATEID +
7268 2 * NFSX_UNSIGNED);
7269 if (l == 0) {
7270 /* Just use the first server. */
7271 NFSBCOPY(tl,
7272 flp->nfsfl_ffm[j].dev,
7273 NFSX_V4DEVICEID);
7274 tl += (NFSX_V4DEVICEID /
7275 NFSX_UNSIGNED);
7276 tl++;
7277 flp->nfsfl_ffm[j].st.seqid =
7278 *tl++;
7279 flp->nfsfl_ffm[j].st.other[0] =
7280 *tl++;
7281 flp->nfsfl_ffm[j].st.other[1] =
7282 *tl++;
7283 flp->nfsfl_ffm[j].st.other[2] =
7284 *tl++;
7285 NFSCL_DEBUG(4, "st.seqid=%u "
7286 "st.o0=0x%x st.o1=0x%x "
7287 "st.o2=0x%x\n",
7288 flp->nfsfl_ffm[j].st.seqid,
7289 flp->nfsfl_ffm[j].st.other[0],
7290 flp->nfsfl_ffm[j].st.other[1],
7291 flp->nfsfl_ffm[j].st.other[2]);
7292 } else
7293 tl += ((NFSX_V4DEVICEID +
7294 NFSX_STATEID +
7295 NFSX_UNSIGNED) /
7296 NFSX_UNSIGNED);
7297 fhcnt = fxdr_unsigned(int, *tl);
7298 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
7299 if (fhcnt < 1 ||
7300 fhcnt > NFSDEV_MAXVERS) {
7301 error = NFSERR_BADXDR;
7302 goto nfsmout;
7303 }
7304 for (m = 0; m < fhcnt; m++) {
7305 NFSM_DISSECT(tl, uint32_t *,
7306 NFSX_UNSIGNED);
7307 nfhlen = fxdr_unsigned(int,
7308 *tl);
7309 NFSCL_DEBUG(4, "nfhlen=%d\n",
7310 nfhlen);
7311 if (nfhlen <= 0 || nfhlen >
7312 NFSX_V4FHMAX) {
7313 error = NFSERR_BADXDR;
7314 goto nfsmout;
7315 }
7316 NFSM_DISSECT(cp, uint8_t *,
7317 NFSM_RNDUP(nfhlen));
7318 if (l == 0) {
7319 flp->nfsfl_ffm[j].fhcnt
7320 = fhcnt;
7321 nfhp = malloc(
7322 sizeof(*nfhp) +
7323 nfhlen - 1, M_NFSFH,
7324 M_WAITOK);
7325 flp->nfsfl_ffm[j].fh[m]
7326 = nfhp;
7327 nfhp->nfh_len = nfhlen;
7328 NFSBCOPY(cp,
7329 nfhp->nfh_fh,
7330 nfhlen);
7331 NFSCL_DEBUG(4,
7332 "got fh\n");
7333 }
7334 }
7335 /* Now, get the ffsd_user/ffds_group. */
7336 error = nfsrv_parseug(nd, 0, &user,
7337 &grp, curthread);
7338 NFSCL_DEBUG(4, "after parseu=%d\n",
7339 error);
7340 if (error == 0)
7341 error = nfsrv_parseug(nd, 1,
7342 &user, &grp, curthread);
7343 NFSCL_DEBUG(4, "aft parseg=%d\n",
7344 grp);
7345 if (error != 0)
7346 goto nfsmout;
7347 NFSCL_DEBUG(4, "user=%d group=%d\n",
7348 user, grp);
7349 if (l == 0) {
7350 flp->nfsfl_ffm[j].user = user;
7351 flp->nfsfl_ffm[j].group = grp;
7352 NFSCL_DEBUG(4,
7353 "usr=%d grp=%d\n", user,
7354 grp);
7355 }
7356 }
7357 }
7358 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7359 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++);
7360 #ifdef notnow
7361 /*
7362 * At this time, there is no flag.
7363 * NFSFLEXFLAG_IOADVISE_THRU_MDS might need to be
7364 * added, or it may never exist?
7365 */
7366 mtx_lock(&nmp->nm_mtx);
7367 if (nmp->nm_minorvers > 1 && (flp->nfsfl_fflags &
7368 NFSFLEXFLAG_IOADVISE_THRU_MDS) != 0)
7369 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS;
7370 mtx_unlock(&nmp->nm_mtx);
7371 #endif
7372 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl);
7373 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n",
7374 flp->nfsfl_fflags, flp->nfsfl_statshint);
7375 } else {
7376 error = NFSERR_BADXDR;
7377 goto nfsmout;
7378 }
7379 if (flp->nfsfl_iomode == gotiomode) {
7380 /* Keep the list in increasing offset order. */
7381 tflp = LIST_FIRST(flhp);
7382 prevflp = NULL;
7383 while (tflp != NULL &&
7384 tflp->nfsfl_off < flp->nfsfl_off) {
7385 prevflp = tflp;
7386 tflp = LIST_NEXT(tflp, nfsfl_list);
7387 }
7388 if (prevflp == NULL)
7389 LIST_INSERT_HEAD(flhp, flp, nfsfl_list);
7390 else
7391 LIST_INSERT_AFTER(prevflp, flp,
7392 nfsfl_list);
7393 NFSCL_DEBUG(4, "flp inserted\n");
7394 } else {
7395 printf("nfscl_layoutget(): got wrong iomode\n");
7396 nfscl_freeflayout(flp);
7397 }
7398 flp = NULL;
7399 }
7400 nfsmout:
7401 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error);
7402 if (error != 0 && flp != NULL)
7403 nfscl_freeflayout(flp);
7404 return (error);
7405 }
7406
7407 /*
7408 * Parse a user/group digit string.
7409 */
7410 static int
7411 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp,
7412 NFSPROC_T *p)
7413 {
7414 uint32_t *tl;
7415 char *cp, *str, str0[NFSV4_SMALLSTR + 1];
7416 uint32_t len = 0;
7417 int error = 0;
7418
7419 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
7420 len = fxdr_unsigned(uint32_t, *tl);
7421 str = NULL;
7422 if (len > NFSV4_OPAQUELIMIT) {
7423 error = NFSERR_BADXDR;
7424 goto nfsmout;
7425 }
7426 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len);
7427 if (len == 0) {
7428 if (dogrp != 0)
7429 *gidp = GID_NOGROUP;
7430 else
7431 *uidp = UID_NOBODY;
7432 return (0);
7433 }
7434 if (len > NFSV4_SMALLSTR)
7435 str = malloc(len + 1, M_TEMP, M_WAITOK);
7436 else
7437 str = str0;
7438 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len));
7439 NFSBCOPY(cp, str, len);
7440 str[len] = '\0';
7441 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str);
7442 if (dogrp != 0)
7443 error = nfsv4_strtogid(nd, str, len, gidp);
7444 else
7445 error = nfsv4_strtouid(nd, str, len, uidp);
7446 nfsmout:
7447 if (len > NFSV4_SMALLSTR)
7448 free(str, M_TEMP);
7449 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error);
7450 return (error);
7451 }
7452
7453 /*
7454 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(),
7455 * so that it does both an Open and a Layoutget.
7456 */
7457 static int
7458 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp,
7459 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode,
7460 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp,
7461 struct ucred *cred, NFSPROC_T *p)
7462 {
7463 struct nfscllayout *lyp;
7464 struct nfsclflayout *flp;
7465 struct nfsclflayouthead flh;
7466 int error, islocked, layoutlen, recalled, retonclose, usecurstateid;
7467 int layouttype, laystat;
7468 nfsv4stateid_t stateid;
7469 struct nfsclsession *tsep;
7470
7471 error = 0;
7472 if (NFSHASFLEXFILE(nmp))
7473 layouttype = NFSLAYOUT_FLEXFILE;
7474 else
7475 layouttype = NFSLAYOUT_NFSV4_1_FILES;
7476 /*
7477 * If lyp is returned non-NULL, there will be a refcnt (shared lock)
7478 * on it, iff flp != NULL or a lock (exclusive lock) on it iff
7479 * flp == NULL.
7480 */
7481 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, &flp,
7482 &recalled);
7483 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp);
7484 if (lyp == NULL)
7485 islocked = 0;
7486 else if (flp != NULL)
7487 islocked = 1;
7488 else
7489 islocked = 2;
7490 if ((lyp == NULL || flp == NULL) && recalled == 0) {
7491 LIST_INIT(&flh);
7492 tsep = nfsmnt_mdssession(nmp);
7493 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID +
7494 3 * NFSX_UNSIGNED);
7495 if (lyp == NULL)
7496 usecurstateid = 1;
7497 else {
7498 usecurstateid = 0;
7499 stateid.seqid = lyp->nfsly_stateid.seqid;
7500 stateid.other[0] = lyp->nfsly_stateid.other[0];
7501 stateid.other[1] = lyp->nfsly_stateid.other[1];
7502 stateid.other[2] = lyp->nfsly_stateid.other[2];
7503 }
7504 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen,
7505 newfhp, newfhlen, mode, op, name, namelen,
7506 dpp, &stateid, usecurstateid, layouttype, layoutlen,
7507 &retonclose, &flh, &laystat, cred, p);
7508 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n",
7509 laystat, error);
7510 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen,
7511 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat,
7512 &islocked, cred, p);
7513 } else
7514 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen,
7515 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0);
7516 if (islocked == 2)
7517 nfscl_rellayout(lyp, 1);
7518 else if (islocked == 1)
7519 nfscl_rellayout(lyp, 0);
7520 return (error);
7521 }
7522
7523 /*
7524 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS
7525 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are
7526 * handled by nfsrpc_openrpc().
7527 * For the case where op == NULL, dvp is the directory. When op != NULL, it
7528 * can be NULL.
7529 */
7530 static int
7531 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp,
7532 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode,
7533 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp,
7534 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype,
7535 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp,
7536 int *laystatp, struct ucred *cred, NFSPROC_T *p)
7537 {
7538 uint32_t *tl;
7539 struct nfsrv_descript nfsd, *nd = &nfsd;
7540 struct nfscldeleg *ndp = NULL;
7541 struct nfsvattr nfsva;
7542 struct nfsclsession *tsep;
7543 uint32_t rflags, deleg;
7544 nfsattrbit_t attrbits;
7545 int error, ret, acesize, limitby, iomode;
7546
7547 *dpp = NULL;
7548 *laystatp = ENXIO;
7549 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL,
7550 0, 0);
7551 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED);
7552 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
7553 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
7554 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
7555 tsep = nfsmnt_mdssession(nmp);
7556 *tl++ = tsep->nfsess_clientid.lval[0];
7557 *tl = tsep->nfsess_clientid.lval[1];
7558 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
7559 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7560 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
7561 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
7562 nfsm_strtom(nd, name, namelen);
7563 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
7564 *tl = txdr_unsigned(NFSV4OP_GETATTR);
7565 NFSZERO_ATTRBIT(&attrbits);
7566 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
7567 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
7568 nfsrv_putattrbit(nd, &attrbits);
7569 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
7570 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET);
7571 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0)
7572 iomode = NFSLAYOUTIOMODE_RW;
7573 else
7574 iomode = NFSLAYOUTIOMODE_READ;
7575 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp,
7576 layouttype, layoutlen, usecurstateid);
7577 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
7578 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
7579 if (error != 0)
7580 return (error);
7581 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
7582 if (nd->nd_repstat != 0)
7583 *laystatp = nd->nd_repstat;
7584 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7585 /* ND_NOMOREDATA will be set if the Open operation failed. */
7586 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7587 6 * NFSX_UNSIGNED);
7588 op->nfso_stateid.seqid = *tl++;
7589 op->nfso_stateid.other[0] = *tl++;
7590 op->nfso_stateid.other[1] = *tl++;
7591 op->nfso_stateid.other[2] = *tl;
7592 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
7593 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
7594 if (error != 0)
7595 goto nfsmout;
7596 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
7597 deleg = fxdr_unsigned(u_int32_t, *tl);
7598 if (deleg == NFSV4OPEN_DELEGATEREAD ||
7599 deleg == NFSV4OPEN_DELEGATEWRITE) {
7600 if (!(op->nfso_own->nfsow_clp->nfsc_flags &
7601 NFSCLFLAGS_FIRSTDELEG))
7602 op->nfso_own->nfsow_clp->nfsc_flags |=
7603 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
7604 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen,
7605 M_NFSCLDELEG, M_WAITOK);
7606 LIST_INIT(&ndp->nfsdl_owner);
7607 LIST_INIT(&ndp->nfsdl_lock);
7608 ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
7609 ndp->nfsdl_fhlen = newfhlen;
7610 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
7611 newnfs_copyincred(cred, &ndp->nfsdl_cred);
7612 nfscl_lockinit(&ndp->nfsdl_rwlock);
7613 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7614 NFSX_UNSIGNED);
7615 ndp->nfsdl_stateid.seqid = *tl++;
7616 ndp->nfsdl_stateid.other[0] = *tl++;
7617 ndp->nfsdl_stateid.other[1] = *tl++;
7618 ndp->nfsdl_stateid.other[2] = *tl++;
7619 ret = fxdr_unsigned(int, *tl);
7620 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
7621 ndp->nfsdl_flags = NFSCLDL_WRITE;
7622 /*
7623 * Indicates how much the file can grow.
7624 */
7625 NFSM_DISSECT(tl, u_int32_t *,
7626 3 * NFSX_UNSIGNED);
7627 limitby = fxdr_unsigned(int, *tl++);
7628 switch (limitby) {
7629 case NFSV4OPEN_LIMITSIZE:
7630 ndp->nfsdl_sizelimit = fxdr_hyper(tl);
7631 break;
7632 case NFSV4OPEN_LIMITBLOCKS:
7633 ndp->nfsdl_sizelimit =
7634 fxdr_unsigned(u_int64_t, *tl++);
7635 ndp->nfsdl_sizelimit *=
7636 fxdr_unsigned(u_int64_t, *tl);
7637 break;
7638 default:
7639 error = NFSERR_BADXDR;
7640 goto nfsmout;
7641 };
7642 } else
7643 ndp->nfsdl_flags = NFSCLDL_READ;
7644 if (ret != 0)
7645 ndp->nfsdl_flags |= NFSCLDL_RECALL;
7646 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
7647 &acesize, p);
7648 if (error != 0)
7649 goto nfsmout;
7650 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
7651 error = NFSERR_BADXDR;
7652 goto nfsmout;
7653 }
7654 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 ||
7655 nfscl_assumeposixlocks)
7656 op->nfso_posixlock = 1;
7657 else
7658 op->nfso_posixlock = 0;
7659 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7660 /* If the 2nd element == NFS_OK, the Getattr succeeded. */
7661 if (*++tl == 0) {
7662 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
7663 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
7664 NULL, NULL, NULL, p, cred);
7665 if (error != 0)
7666 goto nfsmout;
7667 if (ndp != NULL) {
7668 ndp->nfsdl_change = nfsva.na_filerev;
7669 ndp->nfsdl_modtime = nfsva.na_mtime;
7670 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
7671 *dpp = ndp;
7672 ndp = NULL;
7673 }
7674 /*
7675 * At this point, the Open has succeeded, so set
7676 * nd_repstat = NFS_OK. If the Layoutget failed,
7677 * this function just won't return a layout.
7678 */
7679 if (nd->nd_repstat == 0) {
7680 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7681 *laystatp = fxdr_unsigned(int, *++tl);
7682 if (*laystatp == 0) {
7683 error = nfsrv_parselayoutget(nmp, nd,
7684 stateidp, retonclosep, flhp);
7685 if (error != 0)
7686 *laystatp = error;
7687 }
7688 } else
7689 nd->nd_repstat = 0; /* Return 0 for Open. */
7690 }
7691 }
7692 if (nd->nd_repstat != 0 && error == 0)
7693 error = nd->nd_repstat;
7694 nfsmout:
7695 free(ndp, M_NFSCLDELEG);
7696 m_freem(nd->nd_mrep);
7697 return (error);
7698 }
7699
7700 /*
7701 * Similar nfsrpc_createv4(), but also does the LayoutGet operation.
7702 * Used only for mounts with pNFS enabled.
7703 */
7704 static int
7705 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap,
7706 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
7707 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
7708 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
7709 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp,
7710 int usecurstateid, int layouttype, int layoutlen, int *retonclosep,
7711 struct nfsclflayouthead *flhp, int *laystatp)
7712 {
7713 uint32_t *tl;
7714 int error = 0, deleg, newone, ret, acesize, limitby;
7715 struct nfsrv_descript nfsd, *nd = &nfsd;
7716 struct nfsclopen *op;
7717 struct nfscldeleg *dp = NULL;
7718 struct nfsnode *np;
7719 struct nfsfh *nfhp;
7720 struct nfsclsession *tsep;
7721 nfsattrbit_t attrbits;
7722 nfsv4stateid_t stateid;
7723 struct nfsmount *nmp;
7724
7725 nmp = VFSTONFS(dvp->v_mount);
7726 np = VTONFS(dvp);
7727 *laystatp = ENXIO;
7728 *unlockedp = 0;
7729 *nfhpp = NULL;
7730 *dpp = NULL;
7731 *attrflagp = 0;
7732 *dattrflagp = 0;
7733 if (namelen > NFS_MAXNAMLEN)
7734 return (ENAMETOOLONG);
7735 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp);
7736 /*
7737 * For V4, this is actually an Open op.
7738 */
7739 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
7740 *tl++ = txdr_unsigned(owp->nfsow_seqid);
7741 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
7742 NFSV4OPEN_ACCESSREAD);
7743 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
7744 tsep = nfsmnt_mdssession(nmp);
7745 *tl++ = tsep->nfsess_clientid.lval[0];
7746 *tl = tsep->nfsess_clientid.lval[1];
7747 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
7748 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7749 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
7750 if ((fmode & O_EXCL) != 0) {
7751 if (NFSHASSESSPERSIST(nmp)) {
7752 /* Use GUARDED for persistent sessions. */
7753 *tl = txdr_unsigned(NFSCREATE_GUARDED);
7754 nfscl_fillsattr(nd, vap, dvp, 0, 0);
7755 } else {
7756 /* Otherwise, use EXCLUSIVE4_1. */
7757 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
7758 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
7759 *tl++ = cverf.lval[0];
7760 *tl = cverf.lval[1];
7761 nfscl_fillsattr(nd, vap, dvp, 0, 0);
7762 }
7763 } else {
7764 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
7765 nfscl_fillsattr(nd, vap, dvp, 0, 0);
7766 }
7767 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
7768 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
7769 nfsm_strtom(nd, name, namelen);
7770 /* Get the new file's handle and attributes, plus save the FH. */
7771 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
7772 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH);
7773 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
7774 *tl = txdr_unsigned(NFSV4OP_GETATTR);
7775 NFSGETATTR_ATTRBIT(&attrbits);
7776 nfsrv_putattrbit(nd, &attrbits);
7777 /* Get the directory's post-op attributes. */
7778 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
7779 *tl = txdr_unsigned(NFSV4OP_PUTFH);
7780 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
7781 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
7782 *tl = txdr_unsigned(NFSV4OP_GETATTR);
7783 nfsrv_putattrbit(nd, &attrbits);
7784 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7785 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH);
7786 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET);
7787 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp,
7788 layouttype, layoutlen, usecurstateid);
7789 error = nfscl_request(nd, dvp, p, cred, dstuff);
7790 if (error != 0)
7791 return (error);
7792 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat,
7793 error);
7794 if (nd->nd_repstat != 0)
7795 *laystatp = nd->nd_repstat;
7796 NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
7797 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7798 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n");
7799 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7800 6 * NFSX_UNSIGNED);
7801 stateid.seqid = *tl++;
7802 stateid.other[0] = *tl++;
7803 stateid.other[1] = *tl++;
7804 stateid.other[2] = *tl;
7805 nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
7806 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
7807 deleg = fxdr_unsigned(int, *tl);
7808 if (deleg == NFSV4OPEN_DELEGATEREAD ||
7809 deleg == NFSV4OPEN_DELEGATEWRITE) {
7810 if (!(owp->nfsow_clp->nfsc_flags &
7811 NFSCLFLAGS_FIRSTDELEG))
7812 owp->nfsow_clp->nfsc_flags |=
7813 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
7814 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX,
7815 M_NFSCLDELEG, M_WAITOK);
7816 LIST_INIT(&dp->nfsdl_owner);
7817 LIST_INIT(&dp->nfsdl_lock);
7818 dp->nfsdl_clp = owp->nfsow_clp;
7819 newnfs_copyincred(cred, &dp->nfsdl_cred);
7820 nfscl_lockinit(&dp->nfsdl_rwlock);
7821 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7822 NFSX_UNSIGNED);
7823 dp->nfsdl_stateid.seqid = *tl++;
7824 dp->nfsdl_stateid.other[0] = *tl++;
7825 dp->nfsdl_stateid.other[1] = *tl++;
7826 dp->nfsdl_stateid.other[2] = *tl++;
7827 ret = fxdr_unsigned(int, *tl);
7828 if (deleg == NFSV4OPEN_DELEGATEWRITE) {
7829 dp->nfsdl_flags = NFSCLDL_WRITE;
7830 /*
7831 * Indicates how much the file can grow.
7832 */
7833 NFSM_DISSECT(tl, u_int32_t *,
7834 3 * NFSX_UNSIGNED);
7835 limitby = fxdr_unsigned(int, *tl++);
7836 switch (limitby) {
7837 case NFSV4OPEN_LIMITSIZE:
7838 dp->nfsdl_sizelimit = fxdr_hyper(tl);
7839 break;
7840 case NFSV4OPEN_LIMITBLOCKS:
7841 dp->nfsdl_sizelimit =
7842 fxdr_unsigned(u_int64_t, *tl++);
7843 dp->nfsdl_sizelimit *=
7844 fxdr_unsigned(u_int64_t, *tl);
7845 break;
7846 default:
7847 error = NFSERR_BADXDR;
7848 goto nfsmout;
7849 };
7850 } else {
7851 dp->nfsdl_flags = NFSCLDL_READ;
7852 }
7853 if (ret != 0)
7854 dp->nfsdl_flags |= NFSCLDL_RECALL;
7855 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
7856 &acesize, p);
7857 if (error != 0)
7858 goto nfsmout;
7859 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
7860 error = NFSERR_BADXDR;
7861 goto nfsmout;
7862 }
7863
7864 /* Now, we should have the status for the SaveFH. */
7865 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7866 if (*++tl == 0) {
7867 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n");
7868 /*
7869 * Now, process the GetFH and Getattr for the newly
7870 * created file. nfscl_mtofh() will set
7871 * ND_NOMOREDATA if these weren't successful.
7872 */
7873 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
7874 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error);
7875 if (error != 0)
7876 goto nfsmout;
7877 } else
7878 nd->nd_flag |= ND_NOMOREDATA;
7879 /* Now we have the PutFH and Getattr for the directory. */
7880 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7881 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7882 if (*++tl != 0)
7883 nd->nd_flag |= ND_NOMOREDATA;
7884 else {
7885 NFSM_DISSECT(tl, uint32_t *, 2 *
7886 NFSX_UNSIGNED);
7887 if (*++tl != 0)
7888 nd->nd_flag |= ND_NOMOREDATA;
7889 }
7890 }
7891 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7892 /* Load the directory attributes. */
7893 error = nfsm_loadattr(nd, dnap);
7894 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error);
7895 if (error != 0)
7896 goto nfsmout;
7897 *dattrflagp = 1;
7898 if (dp != NULL && *attrflagp != 0) {
7899 dp->nfsdl_change = nnap->na_filerev;
7900 dp->nfsdl_modtime = nnap->na_mtime;
7901 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
7902 }
7903 /*
7904 * We can now complete the Open state.
7905 */
7906 nfhp = *nfhpp;
7907 if (dp != NULL) {
7908 dp->nfsdl_fhlen = nfhp->nfh_len;
7909 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh,
7910 nfhp->nfh_len);
7911 }
7912 /*
7913 * Get an Open structure that will be
7914 * attached to the OpenOwner, acquired already.
7915 */
7916 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
7917 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
7918 cred, p, NULL, &op, &newone, NULL, 0);
7919 if (error != 0)
7920 goto nfsmout;
7921 op->nfso_stateid = stateid;
7922 newnfs_copyincred(cred, &op->nfso_cred);
7923
7924 nfscl_openrelease(nmp, op, error, newone);
7925 *unlockedp = 1;
7926
7927 /* Now, handle the RestoreFH and LayoutGet. */
7928 if (nd->nd_repstat == 0) {
7929 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED);
7930 *laystatp = fxdr_unsigned(int, *(tl + 3));
7931 if (*laystatp == 0) {
7932 error = nfsrv_parselayoutget(nmp, nd,
7933 stateidp, retonclosep, flhp);
7934 if (error != 0)
7935 *laystatp = error;
7936 }
7937 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n",
7938 error);
7939 } else
7940 nd->nd_repstat = 0;
7941 }
7942 }
7943 if (nd->nd_repstat != 0 && error == 0)
7944 error = nd->nd_repstat;
7945 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
7946 nfscl_initiate_recovery(owp->nfsow_clp);
7947 nfsmout:
7948 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error);
7949 if (error == 0)
7950 *dpp = dp;
7951 else
7952 free(dp, M_NFSCLDELEG);
7953 m_freem(nd->nd_mrep);
7954 return (error);
7955 }
7956
7957 /*
7958 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case.
7959 */
7960 static int
7961 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap,
7962 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
7963 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
7964 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
7965 int *dattrflagp, void *dstuff, int *unlockedp)
7966 {
7967 struct nfscllayout *lyp;
7968 struct nfsclflayouthead flh;
7969 struct nfsfh *nfhp;
7970 struct nfsclsession *tsep;
7971 struct nfsmount *nmp;
7972 nfsv4stateid_t stateid;
7973 int error, layoutlen, layouttype, retonclose, laystat;
7974
7975 error = 0;
7976 nmp = VFSTONFS(dvp->v_mount);
7977 if (NFSHASFLEXFILE(nmp))
7978 layouttype = NFSLAYOUT_FLEXFILE;
7979 else
7980 layouttype = NFSLAYOUT_NFSV4_1_FILES;
7981 LIST_INIT(&flh);
7982 tsep = nfsmnt_mdssession(nmp);
7983 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED);
7984 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode,
7985 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
7986 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose,
7987 &flh, &laystat);
7988 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n",
7989 laystat, error);
7990 lyp = NULL;
7991 if (laystat == 0) {
7992 nfhp = *nfhpp;
7993 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh,
7994 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh,
7995 layouttype, laystat, NULL, cred, p);
7996 } else
7997 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid,
7998 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL,
7999 cred, p);
8000 if (laystat == 0)
8001 nfscl_rellayout(lyp, 0);
8002 return (error);
8003 }
8004
8005 /*
8006 * Process the results of a layoutget() operation.
8007 */
8008 static int
8009 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp,
8010 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit,
8011 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype,
8012 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p)
8013 {
8014 struct nfsclflayout *tflp;
8015 struct nfscldevinfo *dip;
8016 uint8_t *dev;
8017 int i, mirrorcnt;
8018
8019 if (laystat == NFSERR_UNKNLAYOUTTYPE) {
8020 NFSLOCKMNT(nmp);
8021 if (!NFSHASFLEXFILE(nmp)) {
8022 /* Switch to using Flex File Layout. */
8023 nmp->nm_state |= NFSSTA_FLEXFILE;
8024 } else if (layouttype == NFSLAYOUT_FLEXFILE) {
8025 /* Disable pNFS. */
8026 NFSCL_DEBUG(1, "disable PNFS\n");
8027 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE);
8028 }
8029 NFSUNLOCKMNT(nmp);
8030 }
8031 if (laystat == 0) {
8032 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n");
8033 LIST_FOREACH(tflp, flhp, nfsfl_list) {
8034 if (layouttype == NFSLAYOUT_FLEXFILE)
8035 mirrorcnt = tflp->nfsfl_mirrorcnt;
8036 else
8037 mirrorcnt = 1;
8038 for (i = 0; i < mirrorcnt; i++) {
8039 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp);
8040 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat);
8041 if (laystat != 0) {
8042 if (layouttype == NFSLAYOUT_FLEXFILE)
8043 dev = tflp->nfsfl_ffm[i].dev;
8044 else
8045 dev = tflp->nfsfl_dev;
8046 laystat = nfsrpc_getdeviceinfo(nmp, dev,
8047 layouttype, notifybit, &dip, cred,
8048 p);
8049 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n",
8050 laystat);
8051 if (laystat != 0)
8052 goto out;
8053 laystat = nfscl_adddevinfo(nmp, dip, i,
8054 tflp);
8055 if (laystat != 0)
8056 printf("nfsrpc_layoutgetresout"
8057 ": cannot add\n");
8058 }
8059 }
8060 }
8061 }
8062 out:
8063 if (laystat == 0) {
8064 /*
8065 * nfscl_layout() always returns with the nfsly_lock
8066 * set to a refcnt (shared lock).
8067 * Passing in dvp is sufficient, since it is only used to
8068 * get the fsid for the file system.
8069 */
8070 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp,
8071 layouttype, retonclose, flhp, lypp, cred, p);
8072 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n",
8073 laystat);
8074 if (laystat == 0 && islockedp != NULL)
8075 *islockedp = 1;
8076 }
8077 return (laystat);
8078 }
8079
8080 /*
8081 * nfs copy_file_range operation.
8082 */
8083 int
8084 nfsrpc_copy_file_range(vnode_t invp, off_t *inoffp, vnode_t outvp,
8085 off_t *outoffp, size_t *lenp, unsigned int flags, int *inattrflagp,
8086 struct nfsvattr *innap, int *outattrflagp, struct nfsvattr *outnap,
8087 struct ucred *cred, bool consecutive, bool *must_commitp)
8088 {
8089 int commit, error, expireret = 0, retrycnt;
8090 u_int32_t clidrev = 0;
8091 struct nfsmount *nmp = VFSTONFS(invp->v_mount);
8092 struct nfsfh *innfhp = NULL, *outnfhp = NULL;
8093 nfsv4stateid_t instateid, outstateid;
8094 void *inlckp, *outlckp;
8095
8096 if (nmp->nm_clp != NULL)
8097 clidrev = nmp->nm_clp->nfsc_clientidrev;
8098 innfhp = VTONFS(invp)->n_fhp;
8099 outnfhp = VTONFS(outvp)->n_fhp;
8100 retrycnt = 0;
8101 do {
8102 /* Get both stateids. */
8103 inlckp = NULL;
8104 nfscl_getstateid(invp, innfhp->nfh_fh, innfhp->nfh_len,
8105 NFSV4OPEN_ACCESSREAD, 0, NULL, curthread, &instateid,
8106 &inlckp);
8107 outlckp = NULL;
8108 nfscl_getstateid(outvp, outnfhp->nfh_fh, outnfhp->nfh_len,
8109 NFSV4OPEN_ACCESSWRITE, 0, NULL, curthread, &outstateid,
8110 &outlckp);
8111
8112 error = nfsrpc_copyrpc(invp, *inoffp, outvp, *outoffp, lenp,
8113 &instateid, &outstateid, innap, inattrflagp, outnap,
8114 outattrflagp, consecutive, &commit, cred, curthread);
8115 if (error == 0) {
8116 if (commit != NFSWRITE_FILESYNC)
8117 *must_commitp = true;
8118 *inoffp += *lenp;
8119 *outoffp += *lenp;
8120 } else if (error == NFSERR_STALESTATEID)
8121 nfscl_initiate_recovery(nmp->nm_clp);
8122 if (inlckp != NULL)
8123 nfscl_lockderef(inlckp);
8124 if (outlckp != NULL)
8125 nfscl_lockderef(outlckp);
8126 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
8127 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
8128 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
8129 (void) nfs_catnap(PZERO, error, "nfs_cfr");
8130 } else if ((error == NFSERR_EXPIRED ||
8131 error == NFSERR_BADSTATEID) && clidrev != 0) {
8132 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev,
8133 curthread);
8134 }
8135 retrycnt++;
8136 } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
8137 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
8138 error == NFSERR_STALEDONTRECOVER ||
8139 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
8140 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
8141 expireret == 0 && clidrev != 0 && retrycnt < 4));
8142 if (error != 0 && (retrycnt >= 4 ||
8143 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
8144 error == NFSERR_STALEDONTRECOVER))
8145 error = EIO;
8146 return (error);
8147 }
8148
8149 /*
8150 * The copy RPC.
8151 */
8152 static int
8153 nfsrpc_copyrpc(vnode_t invp, off_t inoff, vnode_t outvp, off_t outoff,
8154 size_t *lenp, nfsv4stateid_t *instateidp, nfsv4stateid_t *outstateidp,
8155 struct nfsvattr *innap, int *inattrflagp, struct nfsvattr *outnap,
8156 int *outattrflagp, bool consecutive, int *commitp, struct ucred *cred,
8157 NFSPROC_T *p)
8158 {
8159 uint32_t *tl;
8160 int error;
8161 struct nfsrv_descript nfsd;
8162 struct nfsrv_descript *nd = &nfsd;
8163 struct nfsmount *nmp;
8164 nfsattrbit_t attrbits;
8165 uint64_t len;
8166
8167 nmp = VFSTONFS(outvp->v_mount);
8168 *inattrflagp = *outattrflagp = 0;
8169 *commitp = NFSWRITE_UNSTABLE;
8170 len = *lenp;
8171 *lenp = 0;
8172 if (len > nfs_maxcopyrange)
8173 len = nfs_maxcopyrange;
8174 NFSCL_REQSTART(nd, NFSPROC_COPY, invp);
8175 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8176 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8177 NFSGETATTR_ATTRBIT(&attrbits);
8178 nfsrv_putattrbit(nd, &attrbits);
8179 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8180 *tl = txdr_unsigned(NFSV4OP_PUTFH);
8181 nfsm_fhtom(nd, VTONFS(outvp)->n_fhp->nfh_fh,
8182 VTONFS(outvp)->n_fhp->nfh_len, 0);
8183 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8184 *tl = txdr_unsigned(NFSV4OP_COPY);
8185 nfsm_stateidtom(nd, instateidp, NFSSTATEID_PUTSTATEID);
8186 nfsm_stateidtom(nd, outstateidp, NFSSTATEID_PUTSTATEID);
8187 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_HYPER + 4 * NFSX_UNSIGNED);
8188 txdr_hyper(inoff, tl); tl += 2;
8189 txdr_hyper(outoff, tl); tl += 2;
8190 txdr_hyper(len, tl); tl += 2;
8191 if (consecutive)
8192 *tl++ = newnfs_true;
8193 else
8194 *tl++ = newnfs_false;
8195 *tl++ = newnfs_true;
8196 *tl++ = 0;
8197 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8198 NFSWRITEGETATTR_ATTRBIT(&attrbits);
8199 nfsrv_putattrbit(nd, &attrbits);
8200 error = nfscl_request(nd, invp, p, cred, NULL);
8201 if (error != 0)
8202 return (error);
8203 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
8204 /* Get the input file's attributes. */
8205 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
8206 if (*(tl + 1) == 0) {
8207 error = nfsm_loadattr(nd, innap);
8208 if (error != 0)
8209 goto nfsmout;
8210 *inattrflagp = 1;
8211 } else
8212 nd->nd_flag |= ND_NOMOREDATA;
8213 }
8214 /* Skip over return stat for PutFH. */
8215 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
8216 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
8217 if (*++tl != 0)
8218 nd->nd_flag |= ND_NOMOREDATA;
8219 }
8220 /* Skip over return stat for Copy. */
8221 if ((nd->nd_flag & ND_NOMOREDATA) == 0)
8222 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
8223 if (nd->nd_repstat == 0) {
8224 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
8225 if (*tl != 0) {
8226 /* There should be no callback ids. */
8227 error = NFSERR_BADXDR;
8228 goto nfsmout;
8229 }
8230 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED +
8231 NFSX_VERF);
8232 len = fxdr_hyper(tl); tl += 2;
8233 *commitp = fxdr_unsigned(int, *tl++);
8234 NFSLOCKMNT(nmp);
8235 if (!NFSHASWRITEVERF(nmp)) {
8236 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
8237 NFSSETWRITEVERF(nmp);
8238 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
8239 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
8240 nd->nd_repstat = NFSERR_STALEWRITEVERF;
8241 }
8242 NFSUNLOCKMNT(nmp);
8243 tl += (NFSX_VERF / NFSX_UNSIGNED);
8244 if (nd->nd_repstat == 0 && *++tl != newnfs_true)
8245 /* Must be a synchronous copy. */
8246 nd->nd_repstat = NFSERR_NOTSUPP;
8247 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
8248 error = nfsm_loadattr(nd, outnap);
8249 if (error == 0)
8250 *outattrflagp = NFS_LATTR_NOSHRINK;
8251 if (nd->nd_repstat == 0)
8252 *lenp = len;
8253 } else if (nd->nd_repstat == NFSERR_OFFLOADNOREQS) {
8254 /*
8255 * For the case where consecutive is not supported, but
8256 * synchronous is supported, we can try consecutive == false
8257 * by returning this error. Otherwise, return NFSERR_NOTSUPP,
8258 * since Copy cannot be done.
8259 */
8260 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
8261 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
8262 if (!consecutive || *++tl == newnfs_false)
8263 nd->nd_repstat = NFSERR_NOTSUPP;
8264 } else
8265 nd->nd_repstat = NFSERR_BADXDR;
8266 }
8267 if (error == 0)
8268 error = nd->nd_repstat;
8269 nfsmout:
8270 m_freem(nd->nd_mrep);
8271 return (error);
8272 }
8273
8274 /*
8275 * Seek operation.
8276 */
8277 int
8278 nfsrpc_seek(vnode_t vp, off_t *offp, bool *eofp, int content,
8279 struct ucred *cred, struct nfsvattr *nap, int *attrflagp)
8280 {
8281 int error, expireret = 0, retrycnt;
8282 u_int32_t clidrev = 0;
8283 struct nfsmount *nmp = VFSTONFS(vp->v_mount);
8284 struct nfsnode *np = VTONFS(vp);
8285 struct nfsfh *nfhp = NULL;
8286 nfsv4stateid_t stateid;
8287 void *lckp;
8288
8289 if (nmp->nm_clp != NULL)
8290 clidrev = nmp->nm_clp->nfsc_clientidrev;
8291 nfhp = np->n_fhp;
8292 retrycnt = 0;
8293 do {
8294 lckp = NULL;
8295 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
8296 NFSV4OPEN_ACCESSREAD, 0, cred, curthread, &stateid, &lckp);
8297 error = nfsrpc_seekrpc(vp, offp, &stateid, eofp, content,
8298 nap, attrflagp, cred);
8299 if (error == NFSERR_STALESTATEID)
8300 nfscl_initiate_recovery(nmp->nm_clp);
8301 if (lckp != NULL)
8302 nfscl_lockderef(lckp);
8303 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
8304 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
8305 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
8306 (void) nfs_catnap(PZERO, error, "nfs_seek");
8307 } else if ((error == NFSERR_EXPIRED ||
8308 error == NFSERR_BADSTATEID) && clidrev != 0) {
8309 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev,
8310 curthread);
8311 }
8312 retrycnt++;
8313 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
8314 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
8315 error == NFSERR_BADSESSION ||
8316 (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
8317 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
8318 expireret == 0 && clidrev != 0 && retrycnt < 4) ||
8319 (error == NFSERR_OPENMODE && retrycnt < 4));
8320 if (error && retrycnt >= 4)
8321 error = EIO;
8322 return (error);
8323 }
8324
8325 /*
8326 * The seek RPC.
8327 */
8328 static int
8329 nfsrpc_seekrpc(vnode_t vp, off_t *offp, nfsv4stateid_t *stateidp, bool *eofp,
8330 int content, struct nfsvattr *nap, int *attrflagp, struct ucred *cred)
8331 {
8332 uint32_t *tl;
8333 int error;
8334 struct nfsrv_descript nfsd;
8335 struct nfsrv_descript *nd = &nfsd;
8336 nfsattrbit_t attrbits;
8337
8338 *attrflagp = 0;
8339 NFSCL_REQSTART(nd, NFSPROC_SEEK, vp);
8340 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
8341 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
8342 txdr_hyper(*offp, tl); tl += 2;
8343 *tl++ = txdr_unsigned(content);
8344 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8345 NFSGETATTR_ATTRBIT(&attrbits);
8346 nfsrv_putattrbit(nd, &attrbits);
8347 error = nfscl_request(nd, vp, curthread, cred, NULL);
8348 if (error != 0)
8349 return (error);
8350 if (nd->nd_repstat == 0) {
8351 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + NFSX_HYPER);
8352 if (*tl++ == newnfs_true)
8353 *eofp = true;
8354 else
8355 *eofp = false;
8356 *offp = fxdr_hyper(tl);
8357 /* Just skip over Getattr op status. */
8358 error = nfsm_loadattr(nd, nap);
8359 if (error == 0)
8360 *attrflagp = 1;
8361 }
8362 error = nd->nd_repstat;
8363 nfsmout:
8364 m_freem(nd->nd_mrep);
8365 return (error);
8366 }
8367
8368 /*
8369 * The getextattr RPC.
8370 */
8371 int
8372 nfsrpc_getextattr(vnode_t vp, const char *name, struct uio *uiop, ssize_t *lenp,
8373 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p)
8374 {
8375 uint32_t *tl;
8376 int error;
8377 struct nfsrv_descript nfsd;
8378 struct nfsrv_descript *nd = &nfsd;
8379 nfsattrbit_t attrbits;
8380 uint32_t len, len2;
8381
8382 *attrflagp = 0;
8383 NFSCL_REQSTART(nd, NFSPROC_GETEXTATTR, vp);
8384 nfsm_strtom(nd, name, strlen(name));
8385 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8386 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8387 NFSGETATTR_ATTRBIT(&attrbits);
8388 nfsrv_putattrbit(nd, &attrbits);
8389 error = nfscl_request(nd, vp, p, cred, NULL);
8390 if (error != 0)
8391 return (error);
8392 if (nd->nd_repstat == 0) {
8393 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
8394 len = fxdr_unsigned(uint32_t, *tl);
8395 /* Sanity check lengths. */
8396 if (uiop != NULL && len > 0 && len <= IOSIZE_MAX &&
8397 uiop->uio_resid <= UINT32_MAX) {
8398 len2 = uiop->uio_resid;
8399 if (len2 >= len)
8400 error = nfsm_mbufuio(nd, uiop, len);
8401 else {
8402 error = nfsm_mbufuio(nd, uiop, len2);
8403 if (error == 0) {
8404 /*
8405 * nfsm_mbufuio() advances to a multiple
8406 * of 4, so round up len2 as well. Then
8407 * we need to advance over the rest of
8408 * the data, rounding up the remaining
8409 * length.
8410 */
8411 len2 = NFSM_RNDUP(len2);
8412 len2 = NFSM_RNDUP(len - len2);
8413 if (len2 > 0)
8414 error = nfsm_advance(nd, len2,
8415 -1);
8416 }
8417 }
8418 } else if (uiop == NULL && len > 0) {
8419 /* Just wants the length and not the data. */
8420 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
8421 } else if (len > 0)
8422 error = ENOATTR;
8423 if (error != 0)
8424 goto nfsmout;
8425 *lenp = len;
8426 /* Just skip over Getattr op status. */
8427 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
8428 error = nfsm_loadattr(nd, nap);
8429 if (error == 0)
8430 *attrflagp = 1;
8431 }
8432 if (error == 0)
8433 error = nd->nd_repstat;
8434 nfsmout:
8435 m_freem(nd->nd_mrep);
8436 return (error);
8437 }
8438
8439 /*
8440 * The setextattr RPC.
8441 */
8442 int
8443 nfsrpc_setextattr(vnode_t vp, const char *name, struct uio *uiop,
8444 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p)
8445 {
8446 uint32_t *tl;
8447 int error;
8448 struct nfsrv_descript nfsd;
8449 struct nfsrv_descript *nd = &nfsd;
8450 nfsattrbit_t attrbits;
8451
8452 *attrflagp = 0;
8453 NFSCL_REQSTART(nd, NFSPROC_SETEXTATTR, vp);
8454 if (uiop->uio_resid > nd->nd_maxreq) {
8455 /* nd_maxreq is set by NFSCL_REQSTART(). */
8456 m_freem(nd->nd_mreq);
8457 return (EINVAL);
8458 }
8459 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8460 *tl = txdr_unsigned(NFSV4SXATTR_EITHER);
8461 nfsm_strtom(nd, name, strlen(name));
8462 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8463 *tl = txdr_unsigned(uiop->uio_resid);
8464 nfsm_uiombuf(nd, uiop, uiop->uio_resid);
8465 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8466 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8467 NFSGETATTR_ATTRBIT(&attrbits);
8468 nfsrv_putattrbit(nd, &attrbits);
8469 error = nfscl_request(nd, vp, p, cred, NULL);
8470 if (error != 0)
8471 return (error);
8472 if (nd->nd_repstat == 0) {
8473 /* Just skip over the reply and Getattr op status. */
8474 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 *
8475 NFSX_UNSIGNED);
8476 error = nfsm_loadattr(nd, nap);
8477 if (error == 0)
8478 *attrflagp = 1;
8479 }
8480 if (error == 0)
8481 error = nd->nd_repstat;
8482 nfsmout:
8483 m_freem(nd->nd_mrep);
8484 return (error);
8485 }
8486
8487 /*
8488 * The removeextattr RPC.
8489 */
8490 int
8491 nfsrpc_rmextattr(vnode_t vp, const char *name, struct nfsvattr *nap,
8492 int *attrflagp, struct ucred *cred, NFSPROC_T *p)
8493 {
8494 uint32_t *tl;
8495 int error;
8496 struct nfsrv_descript nfsd;
8497 struct nfsrv_descript *nd = &nfsd;
8498 nfsattrbit_t attrbits;
8499
8500 *attrflagp = 0;
8501 NFSCL_REQSTART(nd, NFSPROC_RMEXTATTR, vp);
8502 nfsm_strtom(nd, name, strlen(name));
8503 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
8504 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8505 NFSGETATTR_ATTRBIT(&attrbits);
8506 nfsrv_putattrbit(nd, &attrbits);
8507 error = nfscl_request(nd, vp, p, cred, NULL);
8508 if (error != 0)
8509 return (error);
8510 if (nd->nd_repstat == 0) {
8511 /* Just skip over the reply and Getattr op status. */
8512 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 *
8513 NFSX_UNSIGNED);
8514 error = nfsm_loadattr(nd, nap);
8515 if (error == 0)
8516 *attrflagp = 1;
8517 }
8518 if (error == 0)
8519 error = nd->nd_repstat;
8520 nfsmout:
8521 m_freem(nd->nd_mrep);
8522 return (error);
8523 }
8524
8525 /*
8526 * The listextattr RPC.
8527 */
8528 int
8529 nfsrpc_listextattr(vnode_t vp, uint64_t *cookiep, struct uio *uiop,
8530 size_t *lenp, bool *eofp, struct nfsvattr *nap, int *attrflagp,
8531 struct ucred *cred, NFSPROC_T *p)
8532 {
8533 uint32_t *tl;
8534 int cnt, error, i, len;
8535 struct nfsrv_descript nfsd;
8536 struct nfsrv_descript *nd = &nfsd;
8537 nfsattrbit_t attrbits;
8538 u_char c;
8539
8540 *attrflagp = 0;
8541 NFSCL_REQSTART(nd, NFSPROC_LISTEXTATTR, vp);
8542 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
8543 txdr_hyper(*cookiep, tl); tl += 2;
8544 *tl++ = txdr_unsigned(*lenp);
8545 *tl = txdr_unsigned(NFSV4OP_GETATTR);
8546 NFSGETATTR_ATTRBIT(&attrbits);
8547 nfsrv_putattrbit(nd, &attrbits);
8548 error = nfscl_request(nd, vp, p, cred, NULL);
8549 if (error != 0)
8550 return (error);
8551 *eofp = true;
8552 *lenp = 0;
8553 if (nd->nd_repstat == 0) {
8554 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
8555 *cookiep = fxdr_hyper(tl); tl += 2;
8556 cnt = fxdr_unsigned(int, *tl);
8557 if (cnt < 0) {
8558 error = EBADRPC;
8559 goto nfsmout;
8560 }
8561 for (i = 0; i < cnt; i++) {
8562 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
8563 len = fxdr_unsigned(int, *tl);
8564 if (len <= 0 || len > EXTATTR_MAXNAMELEN) {
8565 error = EBADRPC;
8566 goto nfsmout;
8567 }
8568 if (uiop == NULL)
8569 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
8570 else if (uiop->uio_resid >= len + 1) {
8571 c = len;
8572 error = uiomove(&c, sizeof(c), uiop);
8573 if (error == 0)
8574 error = nfsm_mbufuio(nd, uiop, len);
8575 } else {
8576 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
8577 *eofp = false;
8578 }
8579 if (error != 0)
8580 goto nfsmout;
8581 *lenp += (len + 1);
8582 }
8583 /* Get the eof and skip over the Getattr op status. */
8584 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED);
8585 /*
8586 * *eofp is set false above, because it wasn't able to copy
8587 * all of the reply.
8588 */
8589 if (*eofp && *tl == 0)
8590 *eofp = false;
8591 error = nfsm_loadattr(nd, nap);
8592 if (error == 0)
8593 *attrflagp = 1;
8594 }
8595 if (error == 0)
8596 error = nd->nd_repstat;
8597 nfsmout:
8598 m_freem(nd->nd_mrep);
8599 return (error);
8600 }
8601
8602 /*
8603 * Split an mbuf list. For non-M_EXTPG mbufs, just use m_split().
8604 */
8605 static struct mbuf *
8606 nfsm_split(struct mbuf *mp, uint64_t xfer)
8607 {
8608 struct mbuf *m, *m2;
8609 vm_page_t pg;
8610 int i, j, left, pgno, plen, trim;
8611 char *cp, *cp2;
8612
8613 if ((mp->m_flags & M_EXTPG) == 0) {
8614 m = m_split(mp, xfer, M_WAITOK);
8615 return (m);
8616 }
8617
8618 /* Find the correct mbuf to split at. */
8619 for (m = mp; m != NULL && xfer > m->m_len; m = m->m_next)
8620 xfer -= m->m_len;
8621 if (m == NULL)
8622 return (NULL);
8623
8624 /* If xfer == m->m_len, we can just split the mbuf list. */
8625 if (xfer == m->m_len) {
8626 m2 = m->m_next;
8627 m->m_next = NULL;
8628 return (m2);
8629 }
8630
8631 /* Find the page to split at. */
8632 pgno = 0;
8633 left = xfer;
8634 do {
8635 if (pgno == 0)
8636 plen = m_epg_pagelen(m, 0, m->m_epg_1st_off);
8637 else
8638 plen = m_epg_pagelen(m, pgno, 0);
8639 if (left <= plen)
8640 break;
8641 left -= plen;
8642 pgno++;
8643 } while (pgno < m->m_epg_npgs);
8644 if (pgno == m->m_epg_npgs)
8645 panic("nfsm_split: eroneous ext_pgs mbuf");
8646
8647 m2 = mb_alloc_ext_pgs(M_WAITOK, mb_free_mext_pgs);
8648 m2->m_epg_flags |= EPG_FLAG_ANON;
8649
8650 /*
8651 * If left < plen, allocate a new page for the new mbuf
8652 * and copy the data after left in the page to this new
8653 * page.
8654 */
8655 if (left < plen) {
8656 do {
8657 pg = vm_page_alloc(NULL, 0, VM_ALLOC_NORMAL |
8658 VM_ALLOC_NOOBJ | VM_ALLOC_NODUMP |
8659 VM_ALLOC_WIRED);
8660 if (pg == NULL)
8661 vm_wait(NULL);
8662 } while (pg == NULL);
8663 m2->m_epg_pa[0] = VM_PAGE_TO_PHYS(pg);
8664 m2->m_epg_npgs = 1;
8665
8666 /* Copy the data after left to the new page. */
8667 trim = plen - left;
8668 cp = (char *)(void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]);
8669 if (pgno == 0)
8670 cp += m->m_epg_1st_off;
8671 cp += left;
8672 cp2 = (char *)(void *)PHYS_TO_DMAP(m2->m_epg_pa[0]);
8673 if (pgno == m->m_epg_npgs - 1)
8674 m2->m_epg_last_len = trim;
8675 else {
8676 cp2 += PAGE_SIZE - trim;
8677 m2->m_epg_1st_off = PAGE_SIZE - trim;
8678 m2->m_epg_last_len = m->m_epg_last_len;
8679 }
8680 memcpy(cp2, cp, trim);
8681 m2->m_len = trim;
8682 } else {
8683 m2->m_len = 0;
8684 m2->m_epg_last_len = m->m_epg_last_len;
8685 }
8686
8687 /* Move the pages beyond pgno to the new mbuf. */
8688 for (i = pgno + 1, j = m2->m_epg_npgs; i < m->m_epg_npgs; i++, j++) {
8689 m2->m_epg_pa[j] = m->m_epg_pa[i];
8690 /* Never moves page 0. */
8691 m2->m_len += m_epg_pagelen(m, i, 0);
8692 }
8693 m2->m_epg_npgs = j;
8694 m->m_epg_npgs = pgno + 1;
8695 m->m_epg_last_len = left;
8696 m->m_len = xfer;
8697
8698 m2->m_next = m->m_next;
8699 m->m_next = NULL;
8700 return (m2);
8701 }
Cache object: fa1b0d018c035ff2ce5ea0340bc3c541
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