1 /*	$NetBSD: nfsm_subs.h,v 1.53 2013/09/14 22:29:08 martin Exp $	*/
2 
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  *	@(#)nfsm_subs.h	8.2 (Berkeley) 3/30/95
35  */
36 
37 
38 #ifndef _NFS_NFSM_SUBS_H_
39 #define _NFS_NFSM_SUBS_H_
40 
41 
42 /*
43  * These macros do strange and peculiar things to mbuf chains for
44  * the assistance of the nfs code. To attempt to use them for any
45  * other purpose will be dangerous. (they make weird assumptions)
46  */
47 
48 /*
49  * First define what the actual subs. return
50  */
51 
52 #define	M_HASCL(m)	((m)->m_flags & M_EXT)
53 #define	NFSMADV(m, s)	(m)->m_data += (s)
54 #define	NFSMSIZ(m)	((M_HASCL(m)) ? (m)->m_ext.ext_size : \
55 				(((m)->m_flags & M_PKTHDR) ? MHLEN : MLEN))
56 
57 /*
58  * Now for the macros that do the simple stuff and call the functions
59  * for the hard stuff.
60  * These macros use several vars. declared in nfsm_reqhead and these
61  * vars. must not be used elsewhere unless you are careful not to corrupt
62  * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
63  * that may be used so long as the value is not expected to retained
64  * after a macro.
65  * I know, this is kind of dorkey, but it makes the actual op functions
66  * fairly clean and deals with the mess caused by the xdr discriminating
67  * unions.
68  */
69 
70 #define	nfsm_build(a,c,s) \
71 		{ if ((s) > M_TRAILINGSPACE(mb)) { \
72 			struct mbuf *mb2; \
73 			mb2 = m_get(M_WAIT, MT_DATA); \
74 			MCLAIM(mb2, &nfs_mowner); \
75 			if ((s) > MLEN) \
76 				panic("build > MLEN"); \
77 			mb->m_next = mb2; \
78 			mb = mb2; \
79 			mb->m_len = 0; \
80 			bpos = mtod(mb, char *); \
81 		} \
82 		(a) = (c)(bpos); \
83 		mb->m_len += (s); \
84 		bpos += (s); }
85 
86 #define nfsm_aligned(p) ALIGNED_POINTER(p,u_int32_t)
87 
88 #define	nfsm_dissect(a, c, s) \
89 		{ t1 = mtod(md, char *) + md->m_len-dpos; \
90 		if (t1 >= (s) && nfsm_aligned(dpos)) { \
91 			(a) = (c)(dpos); \
92 			dpos += (s); \
93 		} else if ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \
94 			error = t1; \
95 			m_freem(mrep); \
96 			goto nfsmout; \
97 		} else { \
98 			(a) = (c)cp2; \
99 		} }
100 
101 #define nfsm_fhtom(n, v3) \
102 	      { if (v3) { \
103 			t2 = nfsm_rndup((n)->n_fhsize) + NFSX_UNSIGNED; \
104 			if (t2 <= M_TRAILINGSPACE(mb)) { \
105 				nfsm_build(tl, u_int32_t *, t2); \
106 				*tl++ = txdr_unsigned((n)->n_fhsize); \
107 				*(tl + ((t2>>2) - 2)) = 0; \
108 				memcpy(tl,(n)->n_fhp, (n)->n_fhsize); \
109 			} else if ((t2 = nfsm_strtmbuf(&mb, &bpos, \
110 				(void *)(n)->n_fhp, (n)->n_fhsize)) != 0) { \
111 				error = t2; \
112 				m_freem(mreq); \
113 				goto nfsmout; \
114 			} \
115 		} else { \
116 			nfsm_build(cp, void *, NFSX_V2FH); \
117 			memcpy(cp, (n)->n_fhp, NFSX_V2FH); \
118 		} }
119 
120 #define nfsm_srvfhtom(f, v3) \
121 		{ if (v3) { \
122 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + \
123 			    NFSRVFH_SIZE(f)); \
124 			*tl++ = txdr_unsigned(NFSRVFH_SIZE(f)); \
125 			memcpy(tl, NFSRVFH_DATA(f), NFSRVFH_SIZE(f)); \
126 		} else { \
127 			KASSERT(NFSRVFH_SIZE(f) == NFSX_V2FH); \
128 			nfsm_build(cp, void *, NFSX_V2FH); \
129 			memcpy(cp, NFSRVFH_DATA(f), NFSX_V2FH); \
130 		} }
131 
132 #define nfsm_srvpostop_fh(f) \
133 		{ nfsm_build(tl, u_int32_t *, \
134 		    2 * NFSX_UNSIGNED + NFSRVFH_SIZE(f)); \
135 		*tl++ = nfs_true; \
136 		*tl++ = txdr_unsigned(NFSRVFH_SIZE(f)); \
137 		memcpy(tl, NFSRVFH_DATA(f), NFSRVFH_SIZE(f)); \
138 		}
139 
140 /*
141  * nfsm_mtofh: dissect a "resulted obj" part of create-like operations
142  * like mkdir.
143  *
144  * for nfsv3, dissect post_op_fh3 and following post_op_attr.
145  * for nfsv2, dissect fhandle and following fattr.
146  *
147  * d: (IN) the vnode of the parent directry.
148  * v: (OUT) the corresponding vnode (we allocate one if needed)
149  * v3: (IN) true for nfsv3.
150  * f: (OUT) true if we got valid filehandle.  always true for nfsv2.
151  */
152 
153 #define nfsm_mtofh(d, v, v3, f) \
154 		{ struct nfsnode *ttnp; nfsfh_t *ttfhp; int ttfhsize; \
155 		int hasattr = 0; \
156 		if (v3) { \
157 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
158 			(f) = fxdr_unsigned(int, *tl); \
159 		} else { \
160 			(f) = 1; \
161 			hasattr = 1; \
162 		} \
163 		if (f) { \
164 			nfsm_getfh(ttfhp, ttfhsize, (v3)); \
165 			if ((t1 = nfs_nget((d)->v_mount, ttfhp, ttfhsize, \
166 				&ttnp)) != 0) { \
167 				error = t1; \
168 				m_freem(mrep); \
169 				goto nfsmout; \
170 			} \
171 			(v) = NFSTOV(ttnp); \
172 		} \
173 		if (v3) { \
174 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
175 			if (f) \
176 				hasattr = fxdr_unsigned(int, *tl); \
177 			else if (fxdr_unsigned(int, *tl)) \
178 				nfsm_adv(NFSX_V3FATTR); \
179 		} \
180 		if (f && hasattr) \
181 			nfsm_loadattr((v), (struct vattr *)0, 0); \
182 		}
183 
184 /*
185  * nfsm_getfh: dissect a filehandle.
186  *
187  * f: (OUT) a filehandle.
188  * s: (OUT) size of the filehandle in bytes.
189  * v3: (IN) true if nfsv3.
190  */
191 
192 #define nfsm_getfh(f, s, v3) \
193 		{ if (v3) { \
194 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
195 			if (((s) = fxdr_unsigned(int, *tl)) <= 0 || \
196 				(s) > NFSX_V3FHMAX) { \
197 				m_freem(mrep); \
198 				error = EBADRPC; \
199 				goto nfsmout; \
200 			} \
201 		} else \
202 			(s) = NFSX_V2FH; \
203 		nfsm_dissect((f), nfsfh_t *, nfsm_rndup(s)); }
204 
205 #define	nfsm_loadattr(v, a, flags) \
206 		{ struct vnode *ttvp = (v); \
207 		if ((t1 = nfsm_loadattrcache(&ttvp, &md, &dpos, (a), (flags))) \
208 		    != 0) { \
209 			error = t1; \
210 			m_freem(mrep); \
211 			goto nfsmout; \
212 		} \
213 		(v) = ttvp; }
214 
215 /*
216  * nfsm_postop_attr: process nfsv3 post_op_attr
217  *
218  * dissect post_op_attr.  if we got a one,
219  * call nfsm_loadattrcache to update attribute cache.
220  *
221  * v: (IN/OUT) the corresponding vnode
222  * f: (OUT) true if we got valid attribute
223  * flags: (IN) flags for nfsm_loadattrcache
224  */
225 
226 #define	nfsm_postop_attr(v, f, flags) \
227 		{ struct vnode *ttvp = (v); \
228 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
229 		if (((f) = fxdr_unsigned(int, *tl)) != 0) { \
230 			if ((t1 = nfsm_loadattrcache(&ttvp, &md, &dpos, \
231 				(struct vattr *)0, (flags))) != 0) { \
232 				error = t1; \
233 				(f) = 0; \
234 				m_freem(mrep); \
235 				goto nfsmout; \
236 			} \
237 			(v) = ttvp; \
238 		} }
239 
240 /*
241  * nfsm_wcc_data: process nfsv3 wcc_data
242  *
243  * dissect pre_op_attr and then let nfsm_postop_attr dissect post_op_attr.
244  *
245  * v: (IN/OUT) the corresponding vnode
246  * f: (IN/OUT)
247  *	NFSV3_WCCRATTR	return true if we got valid post_op_attr.
248  *	NFSV3_WCCCHK	return true if pre_op_attr's mtime is the same
249  *			as our n_mtime.  (ie. our cache isn't stale.)
250  * flags: (IN) flags for nfsm_loadattrcache
251  * docheck: (IN) true if timestamp change is expected
252  */
253 
254 /* Used as (f) for nfsm_wcc_data() */
255 #define NFSV3_WCCRATTR	0
256 #define NFSV3_WCCCHK	1
257 
258 #define	nfsm_wcc_data(v, f, flags, docheck) \
259 		{ int ttattrf, ttretf = 0, renewctime = 0, renewnctime = 0; \
260 		struct timespec ctime, mtime; \
261 		struct nfsnode *nfsp = VTONFS(v); \
262 		bool haspreopattr = false; \
263 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
264 		if (*tl == nfs_true) { \
265 			haspreopattr = true; \
266 			nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED); \
267 			fxdr_nfsv3time(tl + 2, &mtime); \
268 			fxdr_nfsv3time(tl + 4, &ctime); \
269 			if (nfsp->n_ctime == ctime.tv_sec) \
270 				renewctime = 1; \
271 			if ((v)->v_type == VDIR) { \
272 				if (timespeccmp(&nfsp->n_nctime, &ctime, ==)) \
273 					renewnctime = 1; \
274 			} \
275 			if (f) { \
276 				ttretf = timespeccmp(&nfsp->n_mtime, &mtime, ==);\
277 			} \
278 		} \
279 		nfsm_postop_attr((v), ttattrf, (flags)); \
280 		nfsp = VTONFS(v); \
281 		if (ttattrf) { \
282 			if (haspreopattr && \
283 			    nfs_check_wccdata(nfsp, &ctime, &mtime, (docheck))) \
284 				renewctime = renewnctime = ttretf = 0; \
285 			if (renewctime) \
286 				nfsp->n_ctime = nfsp->n_vattr->va_ctime.tv_sec; \
287 			if (renewnctime) \
288 				nfsp->n_nctime = nfsp->n_vattr->va_ctime; \
289 		} \
290 		if (f) { \
291 			(f) = ttretf; \
292 		} else { \
293 			(f) = ttattrf; \
294 		} }
295 
296 /* If full is true, set all fields, otherwise just set mode and time fields */
297 #define nfsm_v3attrbuild(a, full)						\
298 		{ if ((a)->va_mode != (mode_t)VNOVAL) {				\
299 			nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);		\
300 			*tl++ = nfs_true;					\
301 			*tl = txdr_unsigned((a)->va_mode);			\
302 		} else {							\
303 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);		\
304 			*tl = nfs_false;					\
305 		}								\
306 		if ((full) && (a)->va_uid != (uid_t)VNOVAL) {			\
307 			nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);		\
308 			*tl++ = nfs_true;					\
309 			*tl = txdr_unsigned((a)->va_uid);			\
310 		} else {							\
311 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);		\
312 			*tl = nfs_false;					\
313 		}								\
314 		if ((full) && (a)->va_gid != (gid_t)VNOVAL) {			\
315 			nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);		\
316 			*tl++ = nfs_true;					\
317 			*tl = txdr_unsigned((a)->va_gid);			\
318 		} else {							\
319 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);		\
320 			*tl = nfs_false;					\
321 		}								\
322 		if ((full) && (a)->va_size != VNOVAL) {				\
323 			nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED);		\
324 			*tl++ = nfs_true;					\
325 			txdr_hyper((a)->va_size, tl);				\
326 		} else {							\
327 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);		\
328 			*tl = nfs_false;					\
329 		}								\
330 		if ((a)->va_atime.tv_sec != VNOVAL) {				\
331 			if ((a)->va_atime.tv_sec != time_second) {		\
332 				nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED);	\
333 				*tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT);	\
334 				txdr_nfsv3time(&(a)->va_atime, tl);		\
335 			} else {						\
336 				nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);	\
337 				*tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);	\
338 			}							\
339 		} else {							\
340 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);		\
341 			*tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);		\
342 		}								\
343 		if ((a)->va_mtime.tv_sec != VNOVAL) {				\
344 			if ((a)->va_mtime.tv_sec != time_second) {		\
345 				nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED);	\
346 				*tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT);	\
347 				txdr_nfsv3time(&(a)->va_mtime, tl);		\
348 			} else {						\
349 				nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);	\
350 				*tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);	\
351 			}							\
352 		} else {							\
353 			nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);		\
354 			*tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);		\
355 		}								\
356 		}
357 
358 
359 #define	nfsm_strsiz(s,m) \
360 		{ nfsm_dissect(tl,uint32_t *,NFSX_UNSIGNED); \
361 		if (((s) = fxdr_unsigned(uint32_t,*tl)) > (m)) { \
362 			m_freem(mrep); \
363 			error = EBADRPC; \
364 			goto nfsmout; \
365 		} }
366 
367 #define	nfsm_srvnamesiz(s) \
368 		{ nfsm_dissect(tl,uint32_t *,NFSX_UNSIGNED); \
369 		if (((s) = fxdr_unsigned(uint32_t,*tl)) > NFS_MAXNAMLEN) \
370 			error = NFSERR_NAMETOL; \
371 		if (error) \
372 			nfsm_reply(0); \
373 		}
374 
375 #define nfsm_mtouio(p,s) \
376 		if ((s) > 0 && \
377 		   (t1 = nfsm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \
378 			error = t1; \
379 			m_freem(mrep); \
380 			goto nfsmout; \
381 		}
382 
383 #define nfsm_uiotom(p,s) \
384 		if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos)) != 0) { \
385 			error = t1; \
386 			m_freem(mreq); \
387 			goto nfsmout; \
388 		}
389 
390 #define	nfsm_reqhead(n,a,s) \
391 		mb = mreq = nfsm_reqh((n),(a),(s),&bpos)
392 
393 #define nfsm_reqdone	m_freem(mrep); \
394 		nfsmout:
395 
396 #define nfsm_rndup(a)	(((a)+3)&(~0x3))
397 #define nfsm_padlen(a)	(nfsm_rndup(a) - (a))
398 
399 #define	nfsm_request1(v, t, p, c, rexmitp)	\
400 		if ((error = nfs_request((v), mreq, (t), (p), \
401 		   (c), &mrep, &md, &dpos, (rexmitp))) != 0) { \
402 			if (error & NFSERR_RETERR) \
403 				error &= ~NFSERR_RETERR; \
404 			else \
405 				goto nfsmout; \
406 		}
407 
408 #define	nfsm_request(v, t, p, c)	nfsm_request1((v), (t), (p), (c), NULL)
409 
410 #define	nfsm_strtom(a,s,m) \
411 		if ((s) > (m)) { \
412 			m_freem(mreq); \
413 			error = ENAMETOOLONG; \
414 			goto nfsmout; \
415 		} \
416 		t2 = nfsm_rndup(s)+NFSX_UNSIGNED; \
417 		if (t2 <= M_TRAILINGSPACE(mb)) { \
418 			nfsm_build(tl,u_int32_t *,t2); \
419 			*tl++ = txdr_unsigned(s); \
420 			*(tl+((t2>>2)-2)) = 0; \
421 			memcpy(tl, (const char *)(a), (s)); \
422 		} else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s))) != 0) { \
423 			error = t2; \
424 			m_freem(mreq); \
425 			goto nfsmout; \
426 		}
427 
428 #define	nfsm_srvdone \
429 		nfsmout: \
430 		return(error)
431 
432 #define	nfsm_reply(s) \
433 		{ \
434 		nfsd->nd_repstat = error; \
435 		if (error && !(nfsd->nd_flag & ND_NFSV3)) \
436 		   (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \
437 			mrq, &mb, &bpos); \
438 		else \
439 		   (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \
440 			mrq, &mb, &bpos); \
441 		if (mrep != NULL) { \
442 			m_freem(mrep); \
443 			mrep = NULL; \
444 		} \
445 		mreq = *mrq; \
446 		if (error && (!(nfsd->nd_flag & ND_NFSV3) || \
447 			error == EBADRPC)) {\
448 			error = 0; \
449 			goto nfsmout; \
450 			} \
451 		}
452 
453 #define	nfsm_writereply(s, v3) \
454 		{ \
455 		nfsd->nd_repstat = error; \
456 		if (error && !(v3)) \
457 		   (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \
458 			&mreq, &mb, &bpos); \
459 		else \
460 		   (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \
461 			&mreq, &mb, &bpos); \
462 		}
463 
464 #define	nfsm_adv(s) \
465 		{ t1 = mtod(md, char *) + md->m_len - dpos; \
466 		if (t1 >= (s)) { \
467 			dpos += (s); \
468 		} else if ((t1 = nfs_adv(&md, &dpos, (s), t1)) != 0) { \
469 			error = t1; \
470 			m_freem(mrep); \
471 			goto nfsmout; \
472 		} }
473 
474 #define nfsm_srvmtofh(nsfh) \
475 	{ int fhlen = NFSX_V3FH; \
476 		if (nfsd->nd_flag & ND_NFSV3) { \
477 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
478 			fhlen = fxdr_unsigned(int, *tl); \
479 			if (fhlen > NFSX_V3FHMAX || \
480 			    (fhlen < FHANDLE_SIZE_MIN && fhlen > 0)) { \
481 				error = EBADRPC; \
482 				nfsm_reply(0); \
483 			} \
484 		} else { \
485 			fhlen = NFSX_V2FH; \
486 		} \
487 		(nsfh)->nsfh_size = fhlen; \
488 		if (fhlen != 0) { \
489 			nfsm_dissect(tl, u_int32_t *, fhlen); \
490 			memcpy(NFSRVFH_DATA(nsfh), tl, fhlen); \
491 		} \
492 	}
493 
494 #define	nfsm_clget \
495 		if (bp >= be) { \
496 			if (mp == mb) \
497 				mp->m_len += bp-bpos; \
498 			mp = m_get(M_WAIT, MT_DATA); \
499 			MCLAIM(mp, &nfs_mowner); \
500 			m_clget(mp, M_WAIT); \
501 			mp->m_len = NFSMSIZ(mp); \
502 			mp2->m_next = mp; \
503 			mp2 = mp; \
504 			bp = mtod(mp, char *); \
505 			be = bp+mp->m_len; \
506 		} \
507 		tl = (u_int32_t *)bp
508 
509 #define	nfsm_srvfillattr(a, f) \
510 		nfsm_srvfattr(nfsd, (a), (f))
511 
512 #define nfsm_srvwcc_data(br, b, ar, a) \
513 		nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos)
514 
515 #define nfsm_srvpostop_attr(r, a) \
516 		nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos)
517 
518 #define nfsm_srvsattr(a) \
519 		{ \
520 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
521 		if (*tl == nfs_true) { \
522 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
523 			(a)->va_mode = nfstov_mode(*tl); \
524 		} \
525 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
526 		if (*tl == nfs_true) { \
527 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
528 			(a)->va_uid = fxdr_unsigned(uid_t, *tl); \
529 		} \
530 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
531 		if (*tl == nfs_true) { \
532 			nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
533 			(a)->va_gid = fxdr_unsigned(gid_t, *tl); \
534 		} \
535 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
536 		if (*tl == nfs_true) { \
537 			nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \
538 			(a)->va_size = fxdr_hyper(tl); \
539 		} \
540 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
541 		switch (fxdr_unsigned(int, *tl)) { \
542 		case NFSV3SATTRTIME_TOCLIENT: \
543 			nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \
544 			fxdr_nfsv3time(tl, &(a)->va_atime); \
545 			break; \
546 		case NFSV3SATTRTIME_TOSERVER: \
547 			getnanotime(&(a)->va_atime); \
548 			(a)->va_vaflags |= VA_UTIMES_NULL; \
549 			break; \
550 		}; \
551 		nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
552 		switch (fxdr_unsigned(int, *tl)) { \
553 		case NFSV3SATTRTIME_TOCLIENT: \
554 			nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \
555 			fxdr_nfsv3time(tl, &(a)->va_mtime); \
556 			(a)->va_vaflags &= ~VA_UTIMES_NULL; \
557 			break; \
558 		case NFSV3SATTRTIME_TOSERVER: \
559 			getnanotime(&(a)->va_mtime); \
560 			(a)->va_vaflags |= VA_UTIMES_NULL; \
561 			break; \
562 		}; }
563 
564 #endif
565