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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 /*
     27  * A handcoded version based on the original rpcgen code.
     28  *
     29  * Note: All future NFS4 protocol changes should be added by hand
     30  * to this file.
     31  *
     32  * CAUTION: All protocol changes must also be propagated to:
     33  *     usr/src/cmd/cmd-inet/usr.sbin/snoop/nfs4_xdr.c
     34  */
     35 
     36 #include <sys/types.h>
     37 #include <sys/sunddi.h>
     38 #include <sys/dnlc.h>
     39 #include <nfs/nfs.h>
     40 #include <nfs/nfs4_kprot.h>
     41 #include <nfs/rnode4.h>
     42 #include <nfs/nfs4.h>
     43 #include <nfs/nfs4_clnt.h>
     44 #include <sys/sdt.h>
     45 #include <sys/mkdev.h>
     46 #include <rpc/rpc_rdma.h>
     47 #include <rpc/xdr.h>
     48 
     49 #define	xdr_dev_t xdr_u_int
     50 
     51 extern bool_t xdr_netbuf(XDR *, struct netbuf *);
     52 extern bool_t xdr_vector(XDR *, char *, const uint_t, const uint_t,
     53 	const xdrproc_t);
     54 bool_t xdr_knetconfig(XDR *, struct knetconfig *);
     55 
     56 bool_t
     57 xdr_bitmap4(XDR *xdrs, bitmap4 *objp)
     58 {
     59 	int32_t len, size;
     60 
     61 	if (xdrs->x_op == XDR_FREE)
     62 		return (TRUE);
     63 
     64 	/*
     65 	 * Simplified bitmap4 processing, always encode from uint64_t
     66 	 * to 2 uint32_t's, always decode first 2 uint32_t's into a
     67 	 * uint64_t and ignore all of the rest.
     68 	 */
     69 	if (xdrs->x_op == XDR_ENCODE) {
     70 		len = 2;
     71 
     72 		if (!XDR_PUTINT32(xdrs, &len))
     73 			return (FALSE);
     74 
     75 #if defined(_LITTLE_ENDIAN)
     76 		if (XDR_PUTINT32(xdrs, (int32_t *)((char *)objp +
     77 		    BYTES_PER_XDR_UNIT)) == TRUE) {
     78 			return (XDR_PUTINT32(xdrs, (int32_t *)objp));
     79 		}
     80 #elif defined(_BIG_ENDIAN)
     81 		if (XDR_PUTINT32(xdrs, (int32_t *)objp) == TRUE) {
     82 			return (XDR_PUTINT32(xdrs, (int32_t *)((char *)objp +
     83 			    BYTES_PER_XDR_UNIT)));
     84 		}
     85 #endif
     86 		return (FALSE);
     87 	}
     88 
     89 	if (!XDR_GETINT32(xdrs, &len))
     90 		return (FALSE);
     91 
     92 	/*
     93 	 * Common fast DECODE cases
     94 	 */
     95 	if (len == 2) {
     96 #if defined(_LITTLE_ENDIAN)
     97 		if (XDR_GETINT32(xdrs, (int32_t *)((char *)objp +
     98 		    BYTES_PER_XDR_UNIT)) == TRUE) {
     99 			return (XDR_GETINT32(xdrs, (int32_t *)objp));
    100 		}
    101 #elif defined(_BIG_ENDIAN)
    102 		if (XDR_GETINT32(xdrs, (int32_t *)objp) == TRUE) {
    103 			return (XDR_GETINT32(xdrs, (int32_t *)((char *)objp +
    104 			    BYTES_PER_XDR_UNIT)));
    105 		}
    106 #endif
    107 		return (FALSE);
    108 	}
    109 
    110 	*objp = 0;
    111 	if (len == 0)
    112 		return (TRUE);
    113 
    114 	/*
    115 	 * The not so common DECODE cases, len == 1 || len > 2
    116 	 */
    117 #if defined(_LITTLE_ENDIAN)
    118 	if (!XDR_GETINT32(xdrs, (int32_t *)((char *)objp + BYTES_PER_XDR_UNIT)))
    119 		return (FALSE);
    120 	if (--len == 0)
    121 		return (TRUE);
    122 	if (!XDR_GETINT32(xdrs, (int32_t *)objp))
    123 		return (FALSE);
    124 #elif defined(_BIG_ENDIAN)
    125 	if (!XDR_GETINT32(xdrs, (int32_t *)objp))
    126 		return (FALSE);
    127 	if (--len == 0)
    128 		return (TRUE);
    129 	if (!XDR_GETINT32(xdrs, (int32_t *)((char *)objp + BYTES_PER_XDR_UNIT)))
    130 		return (FALSE);
    131 #else
    132 	return (FALSE);
    133 #endif
    134 
    135 	if (--len == 0)
    136 		return (TRUE);
    137 
    138 	size = len * BYTES_PER_XDR_UNIT;
    139 	return (XDR_CONTROL(xdrs, XDR_SKIPBYTES, &size));
    140 }
    141 
    142 /* Called by xdr_array, nfsid_map_xdr */
    143 bool_t
    144 xdr_utf8string(XDR *xdrs, utf8string *objp)
    145 {
    146 	if (xdrs->x_op != XDR_FREE)
    147 		return (xdr_bytes(xdrs, (char **)&objp->utf8string_val,
    148 		    (uint_t *)&objp->utf8string_len, NFS4_MAX_UTF8STRING));
    149 
    150 	if (objp->utf8string_val != NULL) {
    151 		kmem_free(objp->utf8string_val, objp->utf8string_len);
    152 		objp->utf8string_val = NULL;
    153 	}
    154 	return (TRUE);
    155 }
    156 
    157 /*
    158  * used by NFSv4 referrals to get info needed for NFSv4 referral mount.
    159  */
    160 bool_t
    161 xdr_nfs_fsl_info(XDR *xdrs, struct nfs_fsl_info *objp)
    162 {
    163 
    164 	if (!xdr_u_int(xdrs, &objp->netbuf_len))
    165 		return (FALSE);
    166 	if (!xdr_u_int(xdrs, &objp->netnm_len))
    167 		return (FALSE);
    168 	if (!xdr_u_int(xdrs, &objp->knconf_len))
    169 		return (FALSE);
    170 
    171 #if defined(_LP64)
    172 	/*
    173 	 * The object can come from a 32-bit binary; nfsmapid.
    174 	 * To be safe we double the size of the knetconfig to
    175 	 * allow some buffering for decoding.
    176 	 */
    177 	if (xdrs->x_op == XDR_DECODE)
    178 		objp->knconf_len += sizeof (struct knetconfig);
    179 #endif
    180 
    181 	if (!xdr_string(xdrs, &objp->netname, ~0))
    182 		return (FALSE);
    183 	if (!xdr_pointer(xdrs, (char **)&objp->addr, objp->netbuf_len,
    184 	    (xdrproc_t)xdr_netbuf))
    185 		return (FALSE);
    186 	if (!xdr_pointer(xdrs, (char **)&objp->knconf,
    187 	    objp->knconf_len, (xdrproc_t)xdr_knetconfig))
    188 		return (FALSE);
    189 	return (TRUE);
    190 }
    191 
    192 bool_t
    193 xdr_knetconfig(XDR *xdrs, struct knetconfig *objp)
    194 {
    195 	rpc_inline_t *buf;
    196 	u_longlong_t dev64;
    197 #if !defined(_LP64)
    198 	uint32_t major, minor;
    199 #endif
    200 	int i;
    201 
    202 	if (!xdr_u_int(xdrs, &objp->knc_semantics))
    203 		return (FALSE);
    204 	if (xdrs->x_op == XDR_DECODE) {
    205 		objp->knc_protofmly = (((char *)objp) +
    206 		    sizeof (struct knetconfig));
    207 		objp->knc_proto = objp->knc_protofmly + KNC_STRSIZE;
    208 	}
    209 	if (!xdr_opaque(xdrs, objp->knc_protofmly, KNC_STRSIZE))
    210 		return (FALSE);
    211 	if (!xdr_opaque(xdrs, objp->knc_proto, KNC_STRSIZE))
    212 		return (FALSE);
    213 
    214 	/*
    215 	 * For interoperability between 32-bit daemon and 64-bit kernel,
    216 	 * we always treat dev_t as 64-bit number and do the expanding
    217 	 * or compression of dev_t as needed.
    218 	 * We have to hand craft the conversion since there is no available
    219 	 * function in ddi.c. Besides ddi.c is available only in the kernel
    220 	 * and we want to keep both user and kernel of xdr_knetconfig() the
    221 	 * same for consistency.
    222 	 */
    223 	if (xdrs->x_op == XDR_ENCODE) {
    224 #if defined(_LP64)
    225 		dev64 = objp->knc_rdev;
    226 #else
    227 		major = (objp->knc_rdev >> NBITSMINOR32) & MAXMAJ32;
    228 		minor = objp->knc_rdev & MAXMIN32;
    229 		dev64 = (((unsigned long long)major) << NBITSMINOR64) | minor;
    230 #endif
    231 		if (!xdr_u_longlong_t(xdrs, &dev64))
    232 			return (FALSE);
    233 	}
    234 	if (xdrs->x_op == XDR_DECODE) {
    235 #if defined(_LP64)
    236 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->knc_rdev))
    237 			return (FALSE);
    238 #else
    239 		if (!xdr_u_longlong_t(xdrs, &dev64))
    240 			return (FALSE);
    241 
    242 		major = (dev64 >> NBITSMINOR64) & L_MAXMAJ32;
    243 		minor = dev64 & L_MAXMIN32;
    244 		objp->knc_rdev = (major << L_BITSMINOR32) | minor;
    245 #endif
    246 	}
    247 
    248 	if (xdrs->x_op == XDR_ENCODE) {
    249 		buf = XDR_INLINE(xdrs, (8) * BYTES_PER_XDR_UNIT);
    250 		if (buf == NULL) {
    251 			if (!xdr_vector(xdrs, (char *)objp->knc_unused, 8,
    252 			    sizeof (uint_t), (xdrproc_t)xdr_u_int))
    253 				return (FALSE);
    254 		} else {
    255 			uint_t *genp;
    256 
    257 			for (i = 0, genp = objp->knc_unused;
    258 			    i < 8; i++) {
    259 #if defined(_LP64) || defined(_KERNEL)
    260 				IXDR_PUT_U_INT32(buf, *genp++);
    261 #else
    262 				IXDR_PUT_U_LONG(buf, *genp++);
    263 #endif
    264 			}
    265 		}
    266 		return (TRUE);
    267 	} else if (xdrs->x_op == XDR_DECODE) {
    268 		buf = XDR_INLINE(xdrs, (8) * BYTES_PER_XDR_UNIT);
    269 		if (buf == NULL) {
    270 			if (!xdr_vector(xdrs, (char *)objp->knc_unused, 8,
    271 			    sizeof (uint_t), (xdrproc_t)xdr_u_int))
    272 				return (FALSE);
    273 		} else {
    274 			uint_t *genp;
    275 
    276 			for (i = 0, genp = objp->knc_unused;
    277 			    i < 8; i++) {
    278 #if defined(_LP64) || defined(_KERNEL)
    279 					*genp++ = IXDR_GET_U_INT32(buf);
    280 #else
    281 					*genp++ = IXDR_GET_U_LONG(buf);
    282 #endif
    283 			}
    284 		}
    285 		return (TRUE);
    286 	}
    287 
    288 	if (!xdr_vector(xdrs, (char *)objp->knc_unused, 8,
    289 	    sizeof (uint_t), (xdrproc_t)xdr_u_int))
    290 		return (FALSE);
    291 	return (TRUE);
    292 }
    293 
    294 /*
    295  * XDR_INLINE decode a filehandle.
    296  */
    297 bool_t
    298 xdr_inline_decode_nfs_fh4(uint32_t *ptr, nfs_fh4_fmt_t *fhp, uint32_t fhsize)
    299 {
    300 	uchar_t *bp = (uchar_t *)ptr;
    301 	uchar_t *cp;
    302 	uint32_t dsize;
    303 	uintptr_t resid;
    304 
    305 	/*
    306 	 * Check to see if what the client sent us is bigger or smaller
    307 	 * than what we can ever possibly send out. NFS_FHMAXDATA is
    308 	 * unfortunately badly named as it is no longer the max and is
    309 	 * really the min of what is sent over the wire.
    310 	 */
    311 	if (fhsize > sizeof (nfs_fh4_fmt_t) || fhsize < (sizeof (fsid_t) +
    312 	    sizeof (ushort_t) + NFS_FHMAXDATA +
    313 	    sizeof (ushort_t) + NFS_FHMAXDATA)) {
    314 		return (FALSE);
    315 	}
    316 
    317 	/*
    318 	 * All internal parts of a filehandle are in native byte order.
    319 	 *
    320 	 * Decode what should be fh4_fsid, it is aligned.
    321 	 */
    322 	fhp->fh4_fsid.val[0] = *(uint32_t *)bp;
    323 	bp += BYTES_PER_XDR_UNIT;
    324 	fhp->fh4_fsid.val[1] = *(uint32_t *)bp;
    325 	bp += BYTES_PER_XDR_UNIT;
    326 
    327 	/*
    328 	 * Decode what should be fh4_len.  fh4_len is two bytes, so we're
    329 	 * unaligned now.
    330 	 */
    331 	cp = (uchar_t *)&fhp->fh4_len;
    332 	*cp++ = *bp++;
    333 	*cp++ = *bp++;
    334 	fhsize -= 2 * BYTES_PER_XDR_UNIT + sizeof (ushort_t);
    335 
    336 	/*
    337 	 * For backwards compatibility, the fid length may be less than
    338 	 * NFS_FHMAXDATA, but it was always encoded as NFS_FHMAXDATA bytes.
    339 	 */
    340 	dsize = fhp->fh4_len < NFS_FHMAXDATA ? NFS_FHMAXDATA : fhp->fh4_len;
    341 
    342 	/*
    343 	 * Make sure the client isn't sending us a bogus length for fh4_data.
    344 	 */
    345 	if (fhsize < dsize)
    346 		return (FALSE);
    347 	bcopy(bp, fhp->fh4_data, dsize);
    348 	bp += dsize;
    349 	fhsize -= dsize;
    350 
    351 	if (fhsize < sizeof (ushort_t))
    352 		return (FALSE);
    353 	cp = (uchar_t *)&fhp->fh4_xlen;
    354 	*cp++ = *bp++;
    355 	*cp++ = *bp++;
    356 	fhsize -= sizeof (ushort_t);
    357 
    358 	dsize = fhp->fh4_xlen < NFS_FHMAXDATA ? NFS_FHMAXDATA : fhp->fh4_xlen;
    359 
    360 	/*
    361 	 * Make sure the client isn't sending us a bogus length for fh4_xdata.
    362 	 */
    363 	if (fhsize < dsize)
    364 		return (FALSE);
    365 	bcopy(bp, fhp->fh4_xdata, dsize);
    366 	fhsize -= dsize;
    367 	bp += dsize;
    368 
    369 	/*
    370 	 * We realign things on purpose, so skip any padding
    371 	 */
    372 	resid = (uintptr_t)bp % BYTES_PER_XDR_UNIT;
    373 	if (resid != 0) {
    374 		if (fhsize < (BYTES_PER_XDR_UNIT - resid))
    375 			return (FALSE);
    376 		bp += BYTES_PER_XDR_UNIT - resid;
    377 		fhsize -= BYTES_PER_XDR_UNIT - resid;
    378 	}
    379 
    380 	if (fhsize < BYTES_PER_XDR_UNIT)
    381 		return (FALSE);
    382 	fhp->fh4_flag = *(uint32_t *)bp;
    383 	bp += BYTES_PER_XDR_UNIT;
    384 	fhsize -= BYTES_PER_XDR_UNIT;
    385 
    386 #ifdef VOLATILE_FH_TEST
    387 	if (fhsize < BYTES_PER_XDR_UNIT)
    388 		return (FALSE);
    389 	fhp->fh4_volatile_id = *(uint32_t *)bp;
    390 	bp += BYTES_PER_XDR_UNIT;
    391 	fhsize -= BYTES_PER_XDR_UNIT;
    392 #endif
    393 	/*
    394 	 * Make sure client didn't send extra bytes
    395 	 */
    396 	if (fhsize != 0)
    397 		return (FALSE);
    398 	return (TRUE);
    399 }
    400 
    401 static bool_t
    402 xdr_decode_nfs_fh4(XDR *xdrs, nfs_fh4 *objp)
    403 {
    404 	uint32_t fhsize;		/* filehandle size */
    405 	uint32_t bufsize;
    406 	rpc_inline_t *ptr;
    407 	uchar_t *bp;
    408 
    409 	ASSERT(xdrs->x_op == XDR_DECODE);
    410 
    411 	/*
    412 	 * Retrieve the filehandle length.
    413 	 */
    414 	if (!XDR_GETINT32(xdrs, (int32_t *)&fhsize))
    415 		return (FALSE);
    416 
    417 	objp->nfs_fh4_val = NULL;
    418 	objp->nfs_fh4_len = 0;
    419 
    420 	/*
    421 	 * Check to see if what the client sent us is bigger or smaller
    422 	 * than what we can ever possibly send out. NFS_FHMAXDATA is
    423 	 * unfortunately badly named as it is no longer the max and is
    424 	 * really the min of what is sent over the wire.
    425 	 */
    426 	if (fhsize > sizeof (nfs_fh4_fmt_t) || fhsize < (sizeof (fsid_t) +
    427 	    sizeof (ushort_t) + NFS_FHMAXDATA +
    428 	    sizeof (ushort_t) + NFS_FHMAXDATA)) {
    429 		if (!XDR_CONTROL(xdrs, XDR_SKIPBYTES, &fhsize))
    430 			return (FALSE);
    431 		return (TRUE);
    432 	}
    433 
    434 	/*
    435 	 * bring in fhsize plus any padding
    436 	 */
    437 	bufsize = RNDUP(fhsize);
    438 	ptr = XDR_INLINE(xdrs, bufsize);
    439 	bp = (uchar_t *)ptr;
    440 	if (ptr == NULL) {
    441 		bp = kmem_alloc(bufsize, KM_SLEEP);
    442 		if (!xdr_opaque(xdrs, (char *)bp, bufsize)) {
    443 			kmem_free(bp, bufsize);
    444 			return (FALSE);
    445 		}
    446 	}
    447 
    448 	objp->nfs_fh4_val = kmem_zalloc(sizeof (nfs_fh4_fmt_t), KM_SLEEP);
    449 	objp->nfs_fh4_len = sizeof (nfs_fh4_fmt_t);
    450 
    451 	if (xdr_inline_decode_nfs_fh4((uint32_t *)bp,
    452 	    (nfs_fh4_fmt_t *)objp->nfs_fh4_val, fhsize) == FALSE) {
    453 		/*
    454 		 * If in the process of decoding we find the file handle
    455 		 * is not correctly formed, we need to continue decoding
    456 		 * and trigger an NFS layer error. Set the nfs_fh4_len to
    457 		 * zero so it gets caught as a bad length.
    458 		 */
    459 		kmem_free(objp->nfs_fh4_val, objp->nfs_fh4_len);
    460 		objp->nfs_fh4_val = NULL;
    461 		objp->nfs_fh4_len = 0;
    462 	}
    463 
    464 	if (ptr == NULL)
    465 		kmem_free(bp, bufsize);
    466 	return (TRUE);
    467 }
    468 
    469 /*
    470  * XDR_INLINE encode a filehandle.
    471  */
    472 bool_t
    473 xdr_inline_encode_nfs_fh4(uint32_t **ptrp, uint32_t *ptr_redzone,
    474 	nfs_fh4_fmt_t *fhp)
    475 {
    476 	uint32_t *ptr = *ptrp;
    477 	uchar_t *cp;
    478 	uint_t otw_len, fsize, xsize;   /* otw, file, and export sizes */
    479 	uint32_t padword;
    480 
    481 	fsize = fhp->fh4_len < NFS_FHMAXDATA ? NFS_FHMAXDATA : fhp->fh4_len;
    482 	xsize = fhp->fh4_xlen < NFS_FHMAXDATA ? NFS_FHMAXDATA : fhp->fh4_xlen;
    483 
    484 	/*
    485 	 * First get the initial and variable sized part of the filehandle.
    486 	 */
    487 	otw_len = sizeof (fhp->fh4_fsid) +
    488 	    sizeof (fhp->fh4_len) + fsize +
    489 	    sizeof (fhp->fh4_xlen) + xsize;
    490 
    491 	/*
    492 	 * Round out to a full word.
    493 	 */
    494 	otw_len = RNDUP(otw_len);
    495 	padword = (otw_len / BYTES_PER_XDR_UNIT);	/* includes fhlen */
    496 
    497 	/*
    498 	 * Add in the fixed sized pieces.
    499 	 */
    500 	otw_len += sizeof (fhp->fh4_flag);
    501 #ifdef VOLATILE_FH_TEST
    502 	otw_len += sizeof (fhp->fh4_volatile_id);
    503 #endif
    504 
    505 	/*
    506 	 * Make sure we don't exceed our buffer.
    507 	 */
    508 	if ((ptr + (otw_len / BYTES_PER_XDR_UNIT) + 1) > ptr_redzone)
    509 		return (FALSE);
    510 
    511 	/*
    512 	 * Zero out the padding.
    513 	 */
    514 	ptr[padword] = 0;
    515 
    516 	IXDR_PUT_U_INT32(ptr, otw_len);
    517 
    518 	/*
    519 	 * The rest of the filehandle is in native byteorder
    520 	 */
    521 	/* fh4_fsid */
    522 	*ptr++ = (uint32_t)fhp->fh4_fsid.val[0];
    523 	*ptr++ = (uint32_t)fhp->fh4_fsid.val[1];
    524 
    525 	/*
    526 	 * Since the next pieces are unaligned, we need to
    527 	 * do bytewise copies.
    528 	 */
    529 	cp = (uchar_t *)ptr;
    530 
    531 	/* fh4_len + fh4_data */
    532 	bcopy(&fhp->fh4_len, cp, sizeof (fhp->fh4_len) + fsize);
    533 	cp += sizeof (fhp->fh4_len) + fsize;
    534 
    535 	/* fh4_xlen + fh4_xdata */
    536 	bcopy(&fhp->fh4_xlen, cp, sizeof (fhp->fh4_xlen) + xsize);
    537 	cp += sizeof (fhp->fh4_xlen) + xsize;
    538 
    539 	/* do necessary rounding/padding */
    540 	cp = (uchar_t *)RNDUP((uintptr_t)cp);
    541 	ptr = (uint32_t *)cp;
    542 
    543 	/*
    544 	 * With the above padding, we're word aligned again.
    545 	 */
    546 	ASSERT(((uintptr_t)ptr % BYTES_PER_XDR_UNIT) == 0);
    547 
    548 	/* fh4_flag */
    549 	*ptr++ = (uint32_t)fhp->fh4_flag;
    550 
    551 #ifdef VOLATILE_FH_TEST
    552 	/* fh4_volatile_id */
    553 	*ptr++ = (uint32_t)fhp->fh4_volatile_id;
    554 #endif
    555 	*ptrp = ptr;
    556 
    557 	return (TRUE);
    558 }
    559 
    560 static bool_t
    561 xdr_encode_nfs_fh4(XDR *xdrs, nfs_fh4 *objp)
    562 {
    563 	uint_t otw_len, fsize, xsize;   /* otw, file, and export sizes */
    564 	bool_t ret;
    565 	rpc_inline_t *ptr;
    566 	rpc_inline_t *buf = NULL;
    567 	uint32_t *ptr_redzone;
    568 	nfs_fh4_fmt_t *fhp;
    569 
    570 	ASSERT(xdrs->x_op == XDR_ENCODE);
    571 
    572 	fhp = (nfs_fh4_fmt_t *)objp->nfs_fh4_val;
    573 	fsize = fhp->fh4_len < NFS_FHMAXDATA ? NFS_FHMAXDATA : fhp->fh4_len;
    574 	xsize = fhp->fh4_xlen < NFS_FHMAXDATA ? NFS_FHMAXDATA : fhp->fh4_xlen;
    575 
    576 	/*
    577 	 * First get the over the wire size, it is the 4 bytes
    578 	 * for the length, plus the combined size of the
    579 	 * file handle components.
    580 	 */
    581 	otw_len = BYTES_PER_XDR_UNIT + sizeof (fhp->fh4_fsid) +
    582 	    sizeof (fhp->fh4_len) + fsize +
    583 	    sizeof (fhp->fh4_xlen) + xsize +
    584 	    sizeof (fhp->fh4_flag);
    585 #ifdef VOLATILE_FH_TEST
    586 	otw_len += sizeof (fhp->fh4_volatile_id);
    587 #endif
    588 	/*
    589 	 * Round out to a full word.
    590 	 */
    591 	otw_len = RNDUP(otw_len);
    592 
    593 	/*
    594 	 * Next try to inline the XDR stream, if that fails (rare)
    595 	 * allocate a buffer to encode the file handle and then
    596 	 * copy it using xdr_opaque and free the buffer.
    597 	 */
    598 	ptr = XDR_INLINE(xdrs, otw_len);
    599 	if (ptr == NULL)
    600 		ptr = buf = kmem_alloc(otw_len, KM_SLEEP);
    601 
    602 	ptr_redzone = (uint32_t *)(ptr + (otw_len / BYTES_PER_XDR_UNIT));
    603 	ret = xdr_inline_encode_nfs_fh4((uint32_t **)&ptr, ptr_redzone, fhp);
    604 
    605 	if (buf != NULL) {
    606 		if (ret == TRUE)
    607 			ret = xdr_opaque(xdrs, (char *)buf, otw_len);
    608 		kmem_free(buf, otw_len);
    609 	}
    610 	return (ret);
    611 }
    612 
    613 /*
    614  * XDR a NFSv4 filehandle.
    615  * Encoding interprets the contents (server).
    616  * Decoding the contents are opaque (client).
    617  */
    618 bool_t
    619 xdr_nfs_fh4(XDR *xdrs, nfs_fh4 *objp)
    620 {
    621 	switch (xdrs->x_op) {
    622 	case XDR_ENCODE:
    623 		return (xdr_encode_nfs_fh4(xdrs, objp));
    624 	case XDR_DECODE:
    625 		return (xdr_bytes(xdrs, (char **)&objp->nfs_fh4_val,
    626 		    (uint_t *)&objp->nfs_fh4_len, NFS4_FHSIZE));
    627 	case XDR_FREE:
    628 		if (objp->nfs_fh4_val != NULL) {
    629 			kmem_free(objp->nfs_fh4_val, objp->nfs_fh4_len);
    630 			objp->nfs_fh4_val = NULL;
    631 		}
    632 		return (TRUE);
    633 	}
    634 	return (FALSE);
    635 }
    636 
    637 /* Called by xdr_array */
    638 static bool_t
    639 xdr_fs_location4(XDR *xdrs, fs_location4 *objp)
    640 {
    641 	if (xdrs->x_op == XDR_DECODE) {
    642 		objp->server_val = NULL;
    643 		objp->rootpath.pathname4_val = NULL;
    644 	}
    645 	if (!xdr_array(xdrs, (char **)&objp->server_val,
    646 	    (uint_t *)&objp->server_len, NFS4_MAX_UTF8STRING,
    647 	    sizeof (utf8string), (xdrproc_t)xdr_utf8string))
    648 		return (FALSE);
    649 	return (xdr_array(xdrs, (char **)&objp->rootpath.pathname4_val,
    650 	    (uint_t *)&objp->rootpath.pathname4_len,
    651 	    NFS4_MAX_PATHNAME4,
    652 	    sizeof (utf8string), (xdrproc_t)xdr_utf8string));
    653 }
    654 
    655 /* Called by xdr_array */
    656 static bool_t
    657 xdr_nfsace4(XDR *xdrs, nfsace4 *objp)
    658 {
    659 	if (xdrs->x_op != XDR_FREE) {
    660 		if (!xdr_u_int(xdrs, &objp->type))
    661 			return (FALSE);
    662 		if (!xdr_u_int(xdrs, &objp->flag))
    663 			return (FALSE);
    664 		if (!xdr_u_int(xdrs, &objp->access_mask))
    665 			return (FALSE);
    666 
    667 		if (xdrs->x_op == XDR_DECODE) {
    668 			objp->who.utf8string_val = NULL;
    669 			objp->who.utf8string_len = 0;
    670 		}
    671 
    672 		return (xdr_bytes(xdrs, (char **)&objp->who.utf8string_val,
    673 		    (uint_t *)&objp->who.utf8string_len,
    674 		    NFS4_MAX_UTF8STRING));
    675 	}
    676 
    677 	/*
    678 	 * Optimized free case
    679 	 */
    680 	if (objp->who.utf8string_val != NULL) {
    681 		kmem_free(objp->who.utf8string_val, objp->who.utf8string_len);
    682 		objp->who.utf8string_val = NULL;
    683 	}
    684 	return (TRUE);
    685 }
    686 
    687 /*
    688  * These functions are called out of nfs4_attr.c
    689  */
    690 bool_t
    691 xdr_fattr4_fsid(XDR *xdrs, fattr4_fsid *objp)
    692 {
    693 	if (xdrs->x_op == XDR_FREE)
    694 		return (TRUE);
    695 
    696 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->major))
    697 		return (FALSE);
    698 	return (xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->minor));
    699 }
    700 
    701 
    702 bool_t
    703 xdr_fattr4_acl(XDR *xdrs, fattr4_acl *objp)
    704 {
    705 	return (xdr_array(xdrs, (char **)&objp->fattr4_acl_val,
    706 	    (uint_t *)&objp->fattr4_acl_len, NFS4_ACL_LIMIT,
    707 	    sizeof (nfsace4), (xdrproc_t)xdr_nfsace4));
    708 }
    709 
    710 bool_t
    711 xdr_fattr4_fs_locations(XDR *xdrs, fattr4_fs_locations *objp)
    712 {
    713 	if (xdrs->x_op == XDR_DECODE) {
    714 		objp->fs_root.pathname4_len = 0;
    715 		objp->fs_root.pathname4_val = NULL;
    716 		objp->locations_val = NULL;
    717 	}
    718 	if (!xdr_array(xdrs, (char **)&objp->fs_root.pathname4_val,
    719 	    (uint_t *)&objp->fs_root.pathname4_len,
    720 	    NFS4_MAX_PATHNAME4,
    721 	    sizeof (utf8string), (xdrproc_t)xdr_utf8string))
    722 		return (FALSE);
    723 	return (xdr_array(xdrs, (char **)&objp->locations_val,
    724 	    (uint_t *)&objp->locations_len, NFS4_FS_LOCATIONS_LIMIT,
    725 	    sizeof (fs_location4), (xdrproc_t)xdr_fs_location4));
    726 }
    727 
    728 bool_t
    729 xdr_fattr4_rawdev(XDR *xdrs, fattr4_rawdev *objp)
    730 {
    731 	if (xdrs->x_op == XDR_FREE)
    732 		return (TRUE);
    733 
    734 	if (!xdr_u_int(xdrs, &objp->specdata1))
    735 		return (FALSE);
    736 	return (xdr_u_int(xdrs, &objp->specdata2));
    737 }
    738 
    739 bool_t
    740 xdr_nfstime4(XDR *xdrs, nfstime4 *objp)
    741 {
    742 	if (xdrs->x_op == XDR_FREE)
    743 		return (TRUE);
    744 
    745 	if (!xdr_longlong_t(xdrs, (longlong_t *)&objp->seconds))
    746 		return (FALSE);
    747 	return (xdr_u_int(xdrs, &objp->nseconds));
    748 }
    749 
    750 
    751 /*
    752  * structured used for calls into xdr_ga_fattr_res() as a means
    753  * to do an immediate/short-term cache of owner/group strings
    754  * for callers like the readdir processing.  In the case of readdir,
    755  * it is likely that the directory objects will be owned by the same
    756  * owner/group and if so there is no need to call into the uid/gid
    757  * mapping code.  While the uid/gid interfaces have their own cache
    758  * having one here will reduct pathlength further.
    759  */
    760 #define	MAX_OG_NAME 100
    761 typedef struct ug_cache
    762 {
    763 	uid_t	uid;
    764 	gid_t	gid;
    765 	utf8string u_curr, u_last;
    766 	utf8string g_curr, g_last;
    767 	char	u_buf1[MAX_OG_NAME];
    768 	char	u_buf2[MAX_OG_NAME];
    769 	char	g_buf1[MAX_OG_NAME];
    770 	char	g_buf2[MAX_OG_NAME];
    771 } ug_cache_t;
    772 
    773 #define	U_SWAP_CURR_LAST(ug) \
    774 	(ug)->u_last.utf8string_len = (ug)->u_curr.utf8string_len;	\
    775 	if ((ug)->u_last.utf8string_val == (ug)->u_buf1) {		\
    776 		(ug)->u_last.utf8string_val = (ug)->u_buf2;		\
    777 		(ug)->u_curr.utf8string_val = (ug)->u_buf1;		\
    778 	} else {							\
    779 		(ug)->u_last.utf8string_val = (ug)->u_buf1;		\
    780 		(ug)->u_curr.utf8string_val = (ug)->u_buf2;		\
    781 	}
    782 
    783 #define	G_SWAP_CURR_LAST(ug) \
    784 	(ug)->g_last.utf8string_len = (ug)->g_curr.utf8string_len;	\
    785 	if ((ug)->g_last.utf8string_val == (ug)->g_buf1) {		\
    786 		(ug)->g_last.utf8string_val = (ug)->g_buf2;		\
    787 		(ug)->g_curr.utf8string_val = (ug)->g_buf1;		\
    788 	} else {							\
    789 		(ug)->g_last.utf8string_val = (ug)->g_buf1;		\
    790 		(ug)->g_curr.utf8string_val = (ug)->g_buf2;		\
    791 	}
    792 
    793 static ug_cache_t *
    794 alloc_ugcache()
    795 {
    796 	ug_cache_t *pug = kmem_alloc(sizeof (ug_cache_t), KM_SLEEP);
    797 
    798 	pug->uid = pug->gid = 0;
    799 	pug->u_curr.utf8string_len = 0;
    800 	pug->u_last.utf8string_len = 0;
    801 	pug->g_curr.utf8string_len = 0;
    802 	pug->g_last.utf8string_len = 0;
    803 	pug->u_curr.utf8string_val = pug->u_buf1;
    804 	pug->u_last.utf8string_val = pug->u_buf2;
    805 	pug->g_curr.utf8string_val = pug->g_buf1;
    806 	pug->g_last.utf8string_val = pug->g_buf2;
    807 
    808 	return (pug);
    809 }
    810 
    811 static void
    812 xdr_ga_prefill_vattr(struct nfs4_ga_res *garp, struct mntinfo4 *mi)
    813 {
    814 	static vattr_t s_vattr = {
    815 		AT_ALL,		/* va_mask */
    816 		VNON,		/* va_type */
    817 		0777,		/* va_mode */
    818 		UID_NOBODY,	/* va_uid */
    819 		GID_NOBODY,	/* va_gid */
    820 		0,		/* va_fsid */
    821 		0,		/* va_nodeid */
    822 		1,		/* va_nlink */
    823 		0,		/* va_size */
    824 		{0, 0},		/* va_atime */
    825 		{0, 0},		/* va_mtime */
    826 		{0, 0},		/* va_ctime */
    827 		0,		/* va_rdev */
    828 		MAXBSIZE,	/* va_blksize */
    829 		0,		/* va_nblocks */
    830 		0		/* va_seq */
    831 	};
    832 
    833 
    834 	garp->n4g_va = s_vattr;
    835 	garp->n4g_va.va_fsid = mi->mi_vfsp->vfs_dev;
    836 	hrt2ts(gethrtime(), &garp->n4g_va.va_atime);
    837 	garp->n4g_va.va_mtime = garp->n4g_va.va_ctime = garp->n4g_va.va_atime;
    838 }
    839 
    840 static void
    841 xdr_ga_prefill_statvfs(struct nfs4_ga_ext_res *gesp, struct mntinfo4 *mi)
    842 {
    843 	static statvfs64_t s_sb = {
    844 		MAXBSIZE,	/* f_bsize */
    845 		DEV_BSIZE,	/* f_frsize */
    846 		(fsfilcnt64_t)-1, /* f_blocks */
    847 		(fsfilcnt64_t)-1, /* f_bfree */
    848 		(fsfilcnt64_t)-1, /* f_bavail */
    849 		(fsfilcnt64_t)-1, /* f_files */
    850 		(fsfilcnt64_t)-1, /* f_ffree */
    851 		(fsfilcnt64_t)-1, /* f_favail */
    852 		0,		/* f_fsid */
    853 		"\0",		/* f_basetype */
    854 		0,		/* f_flag */
    855 		MAXNAMELEN,	/* f_namemax */
    856 		"\0",		/* f_fstr */
    857 	};
    858 
    859 	gesp->n4g_sb = s_sb;
    860 	gesp->n4g_sb.f_fsid = mi->mi_vfsp->vfs_fsid.val[0];
    861 }
    862 
    863 static bool_t
    864 xdr_ga_fattr_res(XDR *xdrs, struct nfs4_ga_res *garp, bitmap4 resbmap,
    865 		bitmap4 argbmap, struct mntinfo4 *mi, ug_cache_t *pug)
    866 {
    867 	int truefalse;
    868 	struct nfs4_ga_ext_res ges, *gesp;
    869 	vattr_t *vap = &garp->n4g_va;
    870 	vsecattr_t *vsap = &garp->n4g_vsa;
    871 
    872 	ASSERT(xdrs->x_op == XDR_DECODE);
    873 
    874 	if (garp->n4g_ext_res)
    875 		gesp = garp->n4g_ext_res;
    876 	else
    877 		gesp = &ges;
    878 
    879 	vap->va_mask = 0;
    880 
    881 	/* Check to see if the vattr should be pre-filled */
    882 	if (argbmap & NFS4_VATTR_MASK)
    883 		xdr_ga_prefill_vattr(garp, mi);
    884 
    885 	if (argbmap & NFS4_STATFS_ATTR_MASK)
    886 		xdr_ga_prefill_statvfs(gesp, mi);
    887 
    888 	if (resbmap &
    889 	    (FATTR4_SUPPORTED_ATTRS_MASK |
    890 	    FATTR4_TYPE_MASK |
    891 	    FATTR4_FH_EXPIRE_TYPE_MASK |
    892 	    FATTR4_CHANGE_MASK |
    893 	    FATTR4_SIZE_MASK |
    894 	    FATTR4_LINK_SUPPORT_MASK |
    895 	    FATTR4_SYMLINK_SUPPORT_MASK |
    896 	    FATTR4_NAMED_ATTR_MASK)) {
    897 
    898 		if (resbmap & FATTR4_SUPPORTED_ATTRS_MASK) {
    899 			if (!xdr_bitmap4(xdrs, &gesp->n4g_suppattrs))
    900 				return (FALSE);
    901 		}
    902 		if (resbmap & FATTR4_TYPE_MASK) {
    903 			if (!XDR_GETINT32(xdrs, (int *)&vap->va_type))
    904 				return (FALSE);
    905 
    906 			if (vap->va_type < NF4REG ||
    907 			    vap->va_type > NF4NAMEDATTR)
    908 				vap->va_type = VBAD;
    909 			else
    910 				vap->va_type = nf4_to_vt[vap->va_type];
    911 			if (vap->va_type == VBLK)
    912 				vap->va_blksize = DEV_BSIZE;
    913 
    914 			vap->va_mask |= AT_TYPE;
    915 		}
    916 		if (resbmap & FATTR4_FH_EXPIRE_TYPE_MASK) {
    917 			if (!XDR_GETINT32(xdrs, (int *)&gesp->n4g_fet))
    918 				return (FALSE);
    919 		}
    920 		if (resbmap & FATTR4_CHANGE_MASK) {
    921 			if (!xdr_u_longlong_t(xdrs,
    922 			    (u_longlong_t *)&garp->n4g_change))
    923 				return (FALSE);
    924 			garp->n4g_change_valid = 1;
    925 		}
    926 		if (resbmap & FATTR4_SIZE_MASK) {
    927 			if (!xdr_u_longlong_t(xdrs,
    928 			    (u_longlong_t *)&vap->va_size))
    929 				return (FALSE);
    930 			if (!NFS4_SIZE_OK(vap->va_size)) {
    931 				garp->n4g_attrerr = EFBIG;
    932 				garp->n4g_attrwhy = NFS4_GETATTR_ATSIZE_ERR;
    933 			} else {
    934 				vap->va_mask |= AT_SIZE;
    935 			}
    936 		}
    937 		if (resbmap & FATTR4_LINK_SUPPORT_MASK) {
    938 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
    939 				return (FALSE);
    940 			gesp->n4g_pc4.pc4_link_support =
    941 			    (truefalse ? TRUE : FALSE);
    942 		}
    943 		if (resbmap & FATTR4_SYMLINK_SUPPORT_MASK) {
    944 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
    945 				return (FALSE);
    946 			gesp->n4g_pc4.pc4_symlink_support =
    947 			    (truefalse ? TRUE : FALSE);
    948 		}
    949 		if (resbmap & FATTR4_NAMED_ATTR_MASK) {
    950 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
    951 				return (FALSE);
    952 			gesp->n4g_pc4.pc4_xattr_exists = TRUE;
    953 			gesp->n4g_pc4.pc4_xattr_exists =
    954 			    (truefalse ? TRUE : FALSE);
    955 		}
    956 	}
    957 	if (resbmap &
    958 	    (FATTR4_FSID_MASK |
    959 	    FATTR4_UNIQUE_HANDLES_MASK |
    960 	    FATTR4_LEASE_TIME_MASK |
    961 	    FATTR4_RDATTR_ERROR_MASK)) {
    962 
    963 		if (resbmap & FATTR4_FSID_MASK) {
    964 			if ((!xdr_u_longlong_t(xdrs,
    965 			    (u_longlong_t *)&garp->n4g_fsid.major)) ||
    966 			    (!xdr_u_longlong_t(xdrs,
    967 			    (u_longlong_t *)&garp->n4g_fsid.minor)))
    968 				return (FALSE);
    969 			garp->n4g_fsid_valid = 1;
    970 		}
    971 		if (resbmap & FATTR4_UNIQUE_HANDLES_MASK) {
    972 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
    973 				return (FALSE);
    974 			gesp->n4g_pc4.pc4_unique_handles =
    975 			    (truefalse ? TRUE : FALSE);
    976 		}
    977 		if (resbmap & FATTR4_LEASE_TIME_MASK) {
    978 			if (!XDR_GETINT32(xdrs, (int *)&gesp->n4g_leasetime))
    979 				return (FALSE);
    980 		}
    981 		if (resbmap & FATTR4_RDATTR_ERROR_MASK) {
    982 			if (!XDR_GETINT32(xdrs,
    983 			    (int *)&gesp->n4g_rdattr_error))
    984 				return (FALSE);
    985 		}
    986 	}
    987 	if (resbmap &
    988 	    (FATTR4_ACL_MASK |
    989 	    FATTR4_ACLSUPPORT_MASK |
    990 	    FATTR4_ARCHIVE_MASK |
    991 	    FATTR4_CANSETTIME_MASK)) {
    992 
    993 		if (resbmap & FATTR4_ACL_MASK) {
    994 			fattr4_acl	acl;
    995 
    996 			acl.fattr4_acl_val = NULL;
    997 			acl.fattr4_acl_len = 0;
    998 
    999 			if (!xdr_fattr4_acl(xdrs, &acl))
   1000 				return (FALSE);
   1001 
   1002 			vsap->vsa_aclcnt = acl.fattr4_acl_len;
   1003 			vsap->vsa_aclentp = acl.fattr4_acl_val;
   1004 			vsap->vsa_mask = VSA_ACE | VSA_ACECNT;
   1005 			vsap->vsa_aclentsz = vsap->vsa_aclcnt * sizeof (ace_t);
   1006 
   1007 		}
   1008 		if (resbmap & FATTR4_ACLSUPPORT_MASK) {
   1009 			if (!XDR_GETINT32(xdrs, (int *)&gesp->n4g_aclsupport))
   1010 				return (FALSE);
   1011 		}
   1012 		if (resbmap & FATTR4_ARCHIVE_MASK) {
   1013 			ASSERT(0);
   1014 		}
   1015 		if (resbmap & FATTR4_CANSETTIME_MASK) {
   1016 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
   1017 				return (FALSE);
   1018 			gesp->n4g_pc4.pc4_cansettime =
   1019 			    (truefalse ? TRUE : FALSE);
   1020 		}
   1021 	}
   1022 	if (resbmap &
   1023 	    (FATTR4_CASE_INSENSITIVE_MASK |
   1024 	    FATTR4_CASE_PRESERVING_MASK |
   1025 	    FATTR4_CHOWN_RESTRICTED_MASK |
   1026 	    FATTR4_FILEHANDLE_MASK |
   1027 	    FATTR4_FILEID_MASK |
   1028 	    FATTR4_FILES_AVAIL_MASK |
   1029 	    FATTR4_FILES_FREE_MASK |
   1030 	    FATTR4_FILES_TOTAL_MASK)) {
   1031 
   1032 		if (resbmap & FATTR4_CASE_INSENSITIVE_MASK) {
   1033 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
   1034 				return (FALSE);
   1035 			gesp->n4g_pc4.pc4_case_insensitive =
   1036 			    (truefalse ? TRUE : FALSE);
   1037 		}
   1038 		if (resbmap & FATTR4_CASE_PRESERVING_MASK) {
   1039 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
   1040 				return (FALSE);
   1041 			gesp->n4g_pc4.pc4_case_preserving =
   1042 			    (truefalse ? TRUE : FALSE);
   1043 		}
   1044 		if (resbmap & FATTR4_CHOWN_RESTRICTED_MASK) {
   1045 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
   1046 				return (FALSE);
   1047 			gesp->n4g_pc4.pc4_chown_restricted =
   1048 			    (truefalse ? TRUE : FALSE);
   1049 		}
   1050 		if (resbmap & FATTR4_FILEHANDLE_MASK) {
   1051 			gesp->n4g_fh_u.nfs_fh4_alt.len = 0;
   1052 			gesp->n4g_fh_u.nfs_fh4_alt.val =
   1053 			    gesp->n4g_fh_u.nfs_fh4_alt.data;
   1054 			if (!xdr_bytes(xdrs,
   1055 			    (char **)&gesp->n4g_fh_u.n4g_fh.nfs_fh4_val,
   1056 			    (uint_t *)&gesp->n4g_fh_u.n4g_fh.nfs_fh4_len,
   1057 			    NFS4_FHSIZE))
   1058 				return (FALSE);
   1059 		}
   1060 		if (resbmap & FATTR4_FILEID_MASK) {
   1061 			if (!xdr_u_longlong_t(xdrs,
   1062 			    (u_longlong_t *)&vap->va_nodeid))
   1063 				return (FALSE);
   1064 			vap->va_mask |= AT_NODEID;
   1065 		}
   1066 		if (resbmap & FATTR4_FILES_AVAIL_MASK) {
   1067 			if (!xdr_u_longlong_t(xdrs,
   1068 			    (u_longlong_t *)&gesp->n4g_sb.f_favail))
   1069 				return (FALSE);
   1070 		}
   1071 		if (resbmap & FATTR4_FILES_FREE_MASK) {
   1072 			if (!xdr_u_longlong_t(xdrs,
   1073 			    (u_longlong_t *)&gesp->n4g_sb.f_ffree))
   1074 				return (FALSE);
   1075 		}
   1076 		if (resbmap & FATTR4_FILES_TOTAL_MASK) {
   1077 			if (!xdr_u_longlong_t(xdrs,
   1078 			    (u_longlong_t *)&gesp->n4g_sb.f_files))
   1079 				return (FALSE);
   1080 		}
   1081 	}
   1082 	if (resbmap &
   1083 	    (FATTR4_FS_LOCATIONS_MASK |
   1084 	    FATTR4_HIDDEN_MASK |
   1085 	    FATTR4_HOMOGENEOUS_MASK)) {
   1086 
   1087 		if (resbmap & FATTR4_FS_LOCATIONS_MASK) {
   1088 			if (!xdr_fattr4_fs_locations(xdrs,
   1089 			    &gesp->n4g_fslocations))
   1090 				return (FALSE);
   1091 		}
   1092 		if (resbmap & FATTR4_HIDDEN_MASK) {
   1093 			ASSERT(0);
   1094 		}
   1095 		if (resbmap & FATTR4_HOMOGENEOUS_MASK) {
   1096 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
   1097 				return (FALSE);
   1098 			gesp->n4g_pc4.pc4_homogeneous =
   1099 			    (truefalse ? TRUE : FALSE);
   1100 		}
   1101 	}
   1102 	if (resbmap &
   1103 	    (FATTR4_MAXFILESIZE_MASK |
   1104 	    FATTR4_MAXLINK_MASK |
   1105 	    FATTR4_MAXNAME_MASK |
   1106 	    FATTR4_MAXREAD_MASK |
   1107 	    FATTR4_MAXWRITE_MASK)) {
   1108 
   1109 		if (resbmap & FATTR4_MAXFILESIZE_MASK) {
   1110 			if (!xdr_u_longlong_t(xdrs,
   1111 			    (u_longlong_t *)&gesp->n4g_maxfilesize))
   1112 				return (FALSE);
   1113 		}
   1114 		if (resbmap & FATTR4_MAXLINK_MASK) {
   1115 			if (!XDR_GETINT32(xdrs,
   1116 			    (int *)&gesp->n4g_pc4.pc4_link_max))
   1117 				return (FALSE);
   1118 		}
   1119 		if (resbmap & FATTR4_MAXNAME_MASK) {
   1120 			if (!XDR_GETINT32(xdrs,
   1121 			    (int *)&gesp->n4g_pc4.pc4_name_max))
   1122 				return (FALSE);
   1123 			gesp->n4g_sb.f_namemax = gesp->n4g_pc4.pc4_name_max;
   1124 		}
   1125 		if (resbmap & FATTR4_MAXREAD_MASK) {
   1126 			if (!xdr_u_longlong_t(xdrs,
   1127 			    (u_longlong_t *)&gesp->n4g_maxread))
   1128 				return (FALSE);
   1129 		}
   1130 		if (resbmap & FATTR4_MAXWRITE_MASK) {
   1131 			if (!xdr_u_longlong_t(xdrs,
   1132 			    (u_longlong_t *)&gesp->n4g_maxwrite))
   1133 				return (FALSE);
   1134 		}
   1135 	}
   1136 	if (resbmap &
   1137 	    (FATTR4_MIMETYPE_MASK |
   1138 	    FATTR4_MODE_MASK |
   1139 	    FATTR4_NO_TRUNC_MASK |
   1140 	    FATTR4_NUMLINKS_MASK)) {
   1141 
   1142 		if (resbmap & FATTR4_MIMETYPE_MASK) {
   1143 			ASSERT(0);
   1144 		}
   1145 		if (resbmap & FATTR4_MODE_MASK) {
   1146 			if (!XDR_GETINT32(xdrs, (int *)&vap->va_mode))
   1147 				return (FALSE);
   1148 			vap->va_mask |= AT_MODE;
   1149 		}
   1150 		if (resbmap & FATTR4_NO_TRUNC_MASK) {
   1151 			if (!XDR_GETINT32(xdrs, (int *)&truefalse))
   1152 				return (FALSE);
   1153 			gesp->n4g_pc4.pc4_no_trunc =
   1154 			    (truefalse ? TRUE : FALSE);
   1155 		}
   1156 		if (resbmap & FATTR4_NUMLINKS_MASK) {
   1157 			if (!XDR_GETINT32(xdrs, (int *)&vap->va_nlink))
   1158 				return (FALSE);
   1159 			vap->va_mask |= AT_NLINK;
   1160 		}
   1161 	}
   1162 	if (resbmap &
   1163 	    (FATTR4_OWNER_MASK |
   1164 	    FATTR4_OWNER_GROUP_MASK |
   1165 	    FATTR4_QUOTA_AVAIL_HARD_MASK |
   1166 	    FATTR4_QUOTA_AVAIL_SOFT_MASK)) {
   1167 
   1168 		if (resbmap & FATTR4_OWNER_MASK) {
   1169 			uint_t *owner_length, ol;
   1170 			char *owner_val = NULL;
   1171 			char *owner_alloc = NULL;
   1172 			utf8string ov;
   1173 			int error;
   1174 
   1175 			/* get the OWNER_LENGTH */
   1176 			if (!xdr_u_int(xdrs, &ol))
   1177 				return (FALSE);
   1178 
   1179 			/* Manage the owner length location */
   1180 			if (pug && ol <= MAX_OG_NAME) {
   1181 				owner_length = &pug->u_curr.utf8string_len;
   1182 				*owner_length = ol;
   1183 			} else {
   1184 				owner_length = &ol;
   1185 			}
   1186 
   1187 			/* find memory to store the decode */
   1188 			if (*owner_length > MAX_OG_NAME || pug == NULL)
   1189 				owner_val = owner_alloc =
   1190 				    kmem_alloc(*owner_length, KM_SLEEP);
   1191 			else
   1192 				owner_val = pug->u_curr.utf8string_val;
   1193 
   1194 			/* get the OWNER string */
   1195 			if (!xdr_opaque(xdrs, owner_val, *owner_length)) {
   1196 				if (owner_alloc)
   1197 					kmem_free(owner_alloc, *owner_length);
   1198 				return (FALSE);
   1199 			}
   1200 
   1201 			/* Optimize for matching if called for */
   1202 			if (pug &&
   1203 			    *owner_length == pug->u_last.utf8string_len &&
   1204 			    bcmp(owner_val, pug->u_last.utf8string_val,
   1205 			    *owner_length) == 0) {
   1206 				vap->va_uid = pug->uid;
   1207 				vap->va_mask |= AT_UID;
   1208 			} else {
   1209 				uid_t uid;
   1210 
   1211 				ov.utf8string_len = *owner_length;
   1212 				ov.utf8string_val = owner_val;
   1213 				error = nfs_idmap_str_uid(&ov, &uid, FALSE);
   1214 				/*
   1215 				 * String was mapped, but to nobody because
   1216 				 * we are nfsmapid, indicate it should not
   1217 				 * be cached.
   1218 				 */
   1219 				if (error == ENOTSUP) {
   1220 					error = 0;
   1221 					garp->n4g_attrwhy =
   1222 					    NFS4_GETATTR_NOCACHE_OK;
   1223 				}
   1224 
   1225 				if (error) {
   1226 					garp->n4g_attrerr = error;
   1227 					garp->n4g_attrwhy =
   1228 					    NFS4_GETATTR_ATUID_ERR;
   1229 				} else {
   1230 					vap->va_uid = uid;
   1231 					vap->va_mask |= AT_UID;
   1232 					if (pug && ol <= MAX_OG_NAME) {
   1233 						pug->uid = uid;
   1234 						U_SWAP_CURR_LAST(pug);
   1235 					}
   1236 				}
   1237 				if (owner_alloc)
   1238 					kmem_free(owner_alloc, *owner_length);
   1239 			}
   1240 		}
   1241 		if (resbmap & FATTR4_OWNER_GROUP_MASK) {
   1242 			uint_t *group_length, gl;
   1243 			char *group_val = NULL;
   1244 			char *group_alloc = NULL;
   1245 			utf8string gv;
   1246 			int error;
   1247 
   1248 			/* get the OWNER_GROUP_LENGTH */
   1249 			if (!xdr_u_int(xdrs, &gl))
   1250 				return (FALSE);
   1251 
   1252 			/* Manage the group length location */
   1253 			if (pug && gl <= MAX_OG_NAME) {
   1254 				group_length = &pug->g_curr.utf8string_len;
   1255 				*group_length = gl;
   1256 			} else {
   1257 				group_length = &gl;
   1258 			}
   1259 
   1260 			/* find memory to store the decode */
   1261 			if (*group_length > MAX_OG_NAME || pug == NULL)
   1262 				group_val = group_alloc =
   1263 				    kmem_alloc(*group_length, KM_SLEEP);
   1264 			else
   1265 				group_val = pug->g_curr.utf8string_val;
   1266 
   1267 			/* get the OWNER_GROUP string */
   1268 			if (!xdr_opaque(xdrs, group_val, *group_length)) {
   1269 				if (group_alloc)
   1270 					kmem_free(group_alloc, *group_length);
   1271 				return (FALSE);
   1272 			}
   1273 
   1274 			/* Optimize for matching if called for */
   1275 			if (pug &&
   1276 			    *group_length == pug->g_last.utf8string_len &&
   1277 			    bcmp(group_val, pug->g_last.utf8string_val,
   1278 			    *group_length) == 0) {
   1279 				vap->va_gid = pug->gid;
   1280 				vap->va_mask |= AT_GID;
   1281 			} else {
   1282 				uid_t gid;
   1283 
   1284 				gv.utf8string_len = *group_length;
   1285 				gv.utf8string_val = group_val;
   1286 				error = nfs_idmap_str_gid(&gv, &gid, FALSE);
   1287 				/*
   1288 				 * String was mapped, but to nobody because
   1289 				 * we are nfsmapid, indicate it should not
   1290 				 * be cached.
   1291 				 */
   1292 				if (error == ENOTSUP) {
   1293 					error = 0;
   1294 					garp->n4g_attrwhy =
   1295 					    NFS4_GETATTR_NOCACHE_OK;
   1296 				}
   1297 
   1298 				if (error) {
   1299 					garp->n4g_attrerr = error;
   1300 					garp->n4g_attrwhy =
   1301 					    NFS4_GETATTR_ATGID_ERR;
   1302 				} else {
   1303 					vap->va_gid = gid;
   1304 					vap->va_mask |= AT_GID;
   1305 					if (pug && gl <= MAX_OG_NAME) {
   1306 						pug->gid = gid;
   1307 						G_SWAP_CURR_LAST(pug);
   1308 					}
   1309 				}
   1310 				if (group_alloc) {
   1311 					kmem_free(group_alloc, *group_length);
   1312 				}
   1313 			}
   1314 		}
   1315 		if (resbmap & FATTR4_QUOTA_AVAIL_HARD_MASK) {
   1316 			ASSERT(0);
   1317 		}
   1318 		if (resbmap & FATTR4_QUOTA_AVAIL_SOFT_MASK) {
   1319 			ASSERT(0);
   1320 		}
   1321 	}
   1322 	if (resbmap &
   1323 	    (FATTR4_QUOTA_USED_MASK |
   1324 	    FATTR4_SPACE_AVAIL_MASK |
   1325 	    FATTR4_SPACE_FREE_MASK |
   1326 	    FATTR4_SPACE_TOTAL_MASK |
   1327 	    FATTR4_SPACE_USED_MASK |
   1328 	    FATTR4_SYSTEM_MASK)) {
   1329 
   1330 		if (resbmap & FATTR4_QUOTA_USED_MASK) {
   1331 			ASSERT(0);
   1332 		}
   1333 		if (resbmap & FATTR4_RAWDEV_MASK) {
   1334 			fattr4_rawdev rawdev;
   1335 			if (!xdr_fattr4_rawdev(xdrs, &rawdev))
   1336 				return (FALSE);
   1337 
   1338 			if (vap->va_type == VCHR || vap->va_type == VBLK) {
   1339 				vap->va_rdev = makedevice(rawdev.specdata1,
   1340 				    rawdev.specdata2);
   1341 			} else {
   1342 				vap->va_rdev = 0;
   1343 			}
   1344 			vap->va_mask |= AT_RDEV;
   1345 		}
   1346 		if (resbmap & FATTR4_SPACE_AVAIL_MASK) {
   1347 			if (!xdr_u_longlong_t(xdrs,
   1348 			    (u_longlong_t *)&gesp->n4g_sb.f_bavail))
   1349 				return (FALSE);
   1350 			gesp->n4g_sb.f_bavail /= DEV_BSIZE;
   1351 		}
   1352 		if (resbmap & FATTR4_SPACE_FREE_MASK) {
   1353 			if (!xdr_u_longlong_t(xdrs,
   1354 			    (u_longlong_t *)&gesp->n4g_sb.f_bfree))
   1355 				return (FALSE);
   1356 			gesp->n4g_sb.f_bfree /= DEV_BSIZE;
   1357 		}
   1358 		if (resbmap & FATTR4_SPACE_TOTAL_MASK) {
   1359 			if (!xdr_u_longlong_t(xdrs,
   1360 			    (u_longlong_t *)&gesp->n4g_sb.f_blocks))
   1361 				return (FALSE);
   1362 			gesp->n4g_sb.f_blocks /= DEV_BSIZE;
   1363 		}
   1364 		if (resbmap & FATTR4_SPACE_USED_MASK) {
   1365 			uint64_t space_used;
   1366 			if (!xdr_u_longlong_t(xdrs,
   1367 			    (u_longlong_t *)&space_used))
   1368 				return (FALSE);
   1369 
   1370 			/* Compute space depending on device type */
   1371 			ASSERT((vap->va_mask & AT_TYPE));
   1372 			if (vap->va_type == VREG || vap->va_type == VDIR ||
   1373 			    vap->va_type == VLNK) {
   1374 				vap->va_nblocks = (u_longlong_t)
   1375 				    ((space_used + (offset4)DEV_BSIZE -
   1376 				    (offset4)1) / (offset4)DEV_BSIZE);
   1377 			} else {
   1378 				vap->va_nblocks = 0;
   1379 			}
   1380 			vap->va_mask |= AT_NBLOCKS;
   1381 		}
   1382 		if (resbmap & FATTR4_SYSTEM_MASK) {
   1383 			ASSERT(0);
   1384 		}
   1385 	}
   1386 	if (resbmap &
   1387 	    (FATTR4_TIME_ACCESS_MASK |
   1388 	    FATTR4_TIME_ACCESS_SET_MASK |
   1389 	    FATTR4_TIME_BACKUP_MASK |
   1390 	    FATTR4_TIME_CREATE_MASK |
   1391 	    FATTR4_TIME_DELTA_MASK |
   1392 	    FATTR4_TIME_METADATA_MASK |
   1393 	    FATTR4_TIME_MODIFY_MASK |
   1394 	    FATTR4_TIME_MODIFY_SET_MASK |
   1395 	    FATTR4_MOUNTED_ON_FILEID_MASK)) {
   1396 
   1397 		if (resbmap & FATTR4_TIME_ACCESS_MASK) {
   1398 			nfstime4 atime;
   1399 			int error;
   1400 
   1401 			if (!xdr_longlong_t(xdrs,
   1402 			    (longlong_t *)&atime.seconds))
   1403 				return (FALSE);
   1404 			if (!XDR_GETINT32(xdrs, (int *)&atime.nseconds))
   1405 				return (FALSE);
   1406 			error = nfs4_time_ntov(&atime, &vap->va_atime);
   1407 			if (error) {
   1408 				garp->n4g_attrerr = error;
   1409 				garp->n4g_attrwhy = NFS4_GETATTR_ATATIME_ERR;
   1410 			}
   1411 			vap->va_mask |= AT_ATIME;
   1412 		}
   1413 		if (resbmap & FATTR4_TIME_ACCESS_SET_MASK) {
   1414 			ASSERT(0);
   1415 		}
   1416 		if (resbmap & FATTR4_TIME_BACKUP_MASK) {
   1417 			ASSERT(0);
   1418 		}
   1419 		if (resbmap & FATTR4_TIME_CREATE_MASK) {
   1420 			ASSERT(0);
   1421 		}
   1422 		if (resbmap & FATTR4_TIME_DELTA_MASK) {
   1423 			if ((!xdr_u_longlong_t(xdrs,
   1424 			    (u_longlong_t *)&gesp->n4g_delta.seconds)) ||
   1425 			    (!xdr_u_int(xdrs, &gesp->n4g_delta.nseconds)))
   1426 				return (FALSE);
   1427 		}
   1428 		if (resbmap & FATTR4_TIME_METADATA_MASK) {
   1429 			nfstime4 mdt;
   1430 			int error;
   1431 
   1432 			if (!xdr_longlong_t(xdrs, (longlong_t *)&mdt.seconds))
   1433 				return (FALSE);
   1434 			if (!XDR_GETINT32(xdrs, (int32_t *)&mdt.nseconds))
   1435 				return (FALSE);
   1436 			error = nfs4_time_ntov(&mdt, &vap->va_ctime);
   1437 			if (error) {
   1438 				garp->n4g_attrerr = error;
   1439 				garp->n4g_attrwhy = NFS4_GETATTR_ATCTIME_ERR;
   1440 			}
   1441 			vap->va_mask |= AT_CTIME;
   1442 		}
   1443 		if (resbmap & FATTR4_TIME_MODIFY_MASK) {
   1444 			nfstime4 mtime;
   1445 			int error;
   1446 
   1447 			if (!xdr_longlong_t(xdrs,
   1448 			    (longlong_t *)&mtime.seconds))
   1449 				return (FALSE);
   1450 			if (!XDR_GETINT32(xdrs, (int32_t *)&mtime.nseconds))
   1451 				return (FALSE);
   1452 			error = nfs4_time_ntov(&mtime, &vap->va_mtime);
   1453 			if (error) {
   1454 				garp->n4g_attrerr = error;
   1455 				garp->n4g_attrwhy = NFS4_GETATTR_ATMTIME_ERR;
   1456 			}
   1457 			vap->va_mask |= AT_MTIME;
   1458 		}
   1459 		if (resbmap & FATTR4_TIME_MODIFY_SET_MASK) {
   1460 			ASSERT(0);
   1461 		}
   1462 		if (resbmap & FATTR4_MOUNTED_ON_FILEID_MASK) {
   1463 			if (!xdr_u_longlong_t(xdrs,
   1464 			    (u_longlong_t *)&garp->n4g_mon_fid))
   1465 				return (FALSE);
   1466 			garp->n4g_mon_fid_valid = 1;
   1467 		}
   1468 	}
   1469 
   1470 	if (resbmap & ~(NFS4_VATTR_MASK | FATTR4_ACL_MASK)) {
   1471 		/* copy only if not provided */
   1472 		if (garp->n4g_ext_res == NULL) {
   1473 			garp->n4g_ext_res = kmem_alloc(sizeof (ges), KM_SLEEP);
   1474 			bcopy(&ges, garp->n4g_ext_res, sizeof (ges));
   1475 		}
   1476 	}
   1477 
   1478 	return (TRUE);
   1479 }
   1480 
   1481 /*
   1482  * Inlined version of get_bitmap4 processing
   1483  */
   1484 bitmap4
   1485 xdr_get_bitmap4_inline(uint32_t **iptr)
   1486 {
   1487 	uint32_t resbmaplen;
   1488 	bitmap4 bm;
   1489 	uint32_t *ptr = *iptr;
   1490 
   1491 	/* bitmap LENGTH */
   1492 	resbmaplen = IXDR_GET_U_INT32(ptr);
   1493 
   1494 	/* Inline the bitmap and attrlen for common case of two word map */
   1495 	if (resbmaplen == 2) {
   1496 		IXDR_GET_HYPER(ptr, bm);
   1497 		*iptr = ptr;
   1498 		return (bm);
   1499 	}
   1500 
   1501 #if defined(_LITTLE_ENDIAN)
   1502 	bm = IXDR_GET_U_INT32(ptr);
   1503 	if (--resbmaplen == 0) {
   1504 		*iptr = ptr;
   1505 		return (bm);
   1506 	}
   1507 	*((uint32_t *)&bm) |= IXDR_GET_U_INT32(ptr);
   1508 	if (--resbmaplen == 0) {
   1509 		*iptr = ptr;
   1510 		return (bm);
   1511 	}
   1512 	ptr += resbmaplen;
   1513 	*iptr = ptr;
   1514 	return (bm);
   1515 #elif defined(_BIG_ENDIAN)
   1516 	*((uint32_t *)&bm) = IXDR_GET_U_INT32(ptr);
   1517 	if (--resbmaplen == 0) {
   1518 		*iptr = ptr;
   1519 		return (bm);
   1520 	}
   1521 	bm |= IXDR_GET_U_INT32(ptr);
   1522 	if (--resbmaplen == 0) {
   1523 		*iptr = ptr;
   1524 		return (bm);
   1525 	}
   1526 	ptr += resbmaplen;
   1527 	*iptr = ptr;
   1528 	return (bm);
   1529 #else
   1530 	ASSERT(0);
   1531 	ptr += resbmaplen;
   1532 	*iptr = ptr;
   1533 	return (0);
   1534 #endif
   1535 }
   1536 
   1537 static bool_t
   1538 xdr_ga_fattr_res_inline(uint32_t *ptr, struct nfs4_ga_res *garp,
   1539 			bitmap4 resbmap, bitmap4 argbmap, struct mntinfo4 *mi,
   1540 			ug_cache_t *pug)
   1541 {
   1542 	int truefalse;
   1543 	struct nfs4_ga_ext_res ges, *gesp;
   1544 	vattr_t *vap = &garp->n4g_va;
   1545 
   1546 	if (garp->n4g_ext_res)
   1547 		gesp = garp->n4g_ext_res;
   1548 	else
   1549 		gesp = &ges;
   1550 
   1551 	vap->va_mask = 0;
   1552 
   1553 	/* Check to see if the vattr should be pre-filled */
   1554 	if (argbmap & NFS4_VATTR_MASK)
   1555 		xdr_ga_prefill_vattr(garp, mi);
   1556 
   1557 	if (argbmap & NFS4_STATFS_ATTR_MASK)
   1558 		xdr_ga_prefill_statvfs(gesp, mi);
   1559 
   1560 	if (resbmap &
   1561 	    (FATTR4_SUPPORTED_ATTRS_MASK |
   1562 	    FATTR4_TYPE_MASK |
   1563 	    FATTR4_FH_EXPIRE_TYPE_MASK |
   1564 	    FATTR4_CHANGE_MASK |
   1565 	    FATTR4_SIZE_MASK |
   1566 	    FATTR4_LINK_SUPPORT_MASK |
   1567 	    FATTR4_SYMLINK_SUPPORT_MASK |
   1568 	    FATTR4_NAMED_ATTR_MASK)) {
   1569 
   1570 		if (resbmap & FATTR4_SUPPORTED_ATTRS_MASK) {
   1571 			gesp->n4g_suppattrs = xdr_get_bitmap4_inline(&ptr);
   1572 		}
   1573 		if (resbmap & FATTR4_TYPE_MASK) {
   1574 			vap->va_type = IXDR_GET_U_INT32(ptr);
   1575 
   1576 			if (vap->va_type < NF4REG ||
   1577 			    vap->va_type > NF4NAMEDATTR)
   1578 				vap->va_type = VBAD;
   1579 			else
   1580 				vap->va_type = nf4_to_vt[vap->va_type];
   1581 			if (vap->va_type == VBLK)
   1582 				vap->va_blksize = DEV_BSIZE;
   1583 
   1584 			vap->va_mask |= AT_TYPE;
   1585 		}
   1586 		if (resbmap & FATTR4_FH_EXPIRE_TYPE_MASK) {
   1587 			gesp->n4g_fet = IXDR_GET_U_INT32(ptr);
   1588 		}
   1589 		if (resbmap & FATTR4_CHANGE_MASK) {
   1590 			IXDR_GET_U_HYPER(ptr, garp->n4g_change);
   1591 			garp->n4g_change_valid = 1;
   1592 		}
   1593 		if (resbmap & FATTR4_SIZE_MASK) {
   1594 			IXDR_GET_U_HYPER(ptr, vap->va_size);
   1595 
   1596 			if (!NFS4_SIZE_OK(vap->va_size)) {
   1597 				garp->n4g_attrerr = EFBIG;
   1598 				garp->n4g_attrwhy = NFS4_GETATTR_ATSIZE_ERR;
   1599 			} else {
   1600 				vap->va_mask |= AT_SIZE;
   1601 			}
   1602 		}
   1603 		if (resbmap & FATTR4_LINK_SUPPORT_MASK) {
   1604 			truefalse = IXDR_GET_U_INT32(ptr);
   1605 			gesp->n4g_pc4.pc4_link_support =
   1606 			    (truefalse ? TRUE : FALSE);
   1607 		}
   1608 		if (resbmap & FATTR4_SYMLINK_SUPPORT_MASK) {
   1609 			truefalse = IXDR_GET_U_INT32(ptr);
   1610 			gesp->n4g_pc4.pc4_symlink_support =
   1611 			    (truefalse ? TRUE : FALSE);
   1612 		}
   1613 		if (resbmap & FATTR4_NAMED_ATTR_MASK) {
   1614 			truefalse = IXDR_GET_U_INT32(ptr);
   1615 			gesp->n4g_pc4.pc4_xattr_exists = TRUE;
   1616 			gesp->n4g_pc4.pc4_xattr_exists =
   1617 			    (truefalse ? TRUE : FALSE);
   1618 		}
   1619 	}
   1620 	if (resbmap &
   1621 	    (FATTR4_FSID_MASK |
   1622 	    FATTR4_UNIQUE_HANDLES_MASK |
   1623 	    FATTR4_LEASE_TIME_MASK |
   1624 	    FATTR4_RDATTR_ERROR_MASK)) {
   1625 
   1626 		if (resbmap & FATTR4_FSID_MASK) {
   1627 			IXDR_GET_U_HYPER(ptr, garp->n4g_fsid.major);
   1628 			IXDR_GET_U_HYPER(ptr, garp->n4g_fsid.minor);
   1629 			garp->n4g_fsid_valid = 1;
   1630 		}
   1631 		if (resbmap & FATTR4_UNIQUE_HANDLES_MASK) {
   1632 			truefalse = IXDR_GET_U_INT32(ptr);
   1633 			gesp->n4g_pc4.pc4_unique_handles =
   1634 			    (truefalse ? TRUE : FALSE);
   1635 		}
   1636 		if (resbmap & FATTR4_LEASE_TIME_MASK) {
   1637 			gesp->n4g_leasetime = IXDR_GET_U_INT32(ptr);
   1638 		}
   1639 		if (resbmap & FATTR4_RDATTR_ERROR_MASK) {
   1640 			gesp->n4g_rdattr_error = IXDR_GET_U_INT32(ptr);
   1641 		}
   1642 	}
   1643 	if (resbmap &
   1644 	    (FATTR4_ACL_MASK |
   1645 	    FATTR4_ACLSUPPORT_MASK |
   1646 	    FATTR4_ARCHIVE_MASK |
   1647 	    FATTR4_CANSETTIME_MASK)) {
   1648 
   1649 		if (resbmap & FATTR4_ACL_MASK) {
   1650 			ASSERT(0);
   1651 		}
   1652 		if (resbmap & FATTR4_ACLSUPPORT_MASK) {
   1653 			gesp->n4g_aclsupport = IXDR_GET_U_INT32(ptr);
   1654 		}
   1655 		if (resbmap & FATTR4_ARCHIVE_MASK) {
   1656 			ASSERT(0);
   1657 		}
   1658 		if (resbmap & FATTR4_CANSETTIME_MASK) {
   1659 			truefalse = IXDR_GET_U_INT32(ptr);
   1660 			gesp->n4g_pc4.pc4_cansettime =
   1661 			    (truefalse ? TRUE : FALSE);
   1662 		}
   1663 	}
   1664 	if (resbmap &
   1665 	    (FATTR4_CASE_INSENSITIVE_MASK |
   1666 	    FATTR4_CASE_PRESERVING_MASK |
   1667 	    FATTR4_CHOWN_RESTRICTED_MASK |
   1668 	    FATTR4_FILEHANDLE_MASK |
   1669 	    FATTR4_FILEID_MASK |
   1670 	    FATTR4_FILES_AVAIL_MASK |
   1671 	    FATTR4_FILES_FREE_MASK |
   1672 	    FATTR4_FILES_TOTAL_MASK)) {
   1673 
   1674 		if (resbmap & FATTR4_CASE_INSENSITIVE_MASK) {
   1675 			truefalse = IXDR_GET_U_INT32(ptr);
   1676 			gesp->n4g_pc4.pc4_case_insensitive =
   1677 			    (truefalse ? TRUE : FALSE);
   1678 		}
   1679 		if (resbmap & FATTR4_CASE_PRESERVING_MASK) {
   1680 			truefalse = IXDR_GET_U_INT32(ptr);
   1681 			gesp->n4g_pc4.pc4_case_preserving =
   1682 			    (truefalse ? TRUE : FALSE);
   1683 		}
   1684 		if (resbmap & FATTR4_CHOWN_RESTRICTED_MASK) {
   1685 			truefalse = IXDR_GET_U_INT32(ptr);
   1686 			gesp->n4g_pc4.pc4_chown_restricted =
   1687 			    (truefalse ? TRUE : FALSE);
   1688 		}
   1689 		if (resbmap & FATTR4_FILEHANDLE_MASK) {
   1690 			int len = IXDR_GET_U_INT32(ptr);
   1691 
   1692 			gesp->n4g_fh_u.nfs_fh4_alt.len = 0;
   1693 			gesp->n4g_fh_u.nfs_fh4_alt.val =
   1694 			    gesp->n4g_fh_u.nfs_fh4_alt.data;
   1695 			gesp->n4g_fh_u.n4g_fh.nfs_fh4_len = len;
   1696 
   1697 			bcopy(ptr, gesp->n4g_fh_u.n4g_fh.nfs_fh4_val, len);
   1698 
   1699 			ptr += RNDUP(len) / BYTES_PER_XDR_UNIT;
   1700 		}
   1701 		if (resbmap & FATTR4_FILEID_MASK) {
   1702 			IXDR_GET_U_HYPER(ptr, vap->va_nodeid);
   1703 			vap->va_mask |= AT_NODEID;
   1704 		}
   1705 		if (resbmap & FATTR4_FILES_AVAIL_MASK) {
   1706 			IXDR_GET_U_HYPER(ptr, gesp->n4g_sb.f_favail);
   1707 		}
   1708 		if (resbmap & FATTR4_FILES_FREE_MASK) {
   1709 			IXDR_GET_U_HYPER(ptr, gesp->n4g_sb.f_ffree);
   1710 		}
   1711 		if (resbmap & FATTR4_FILES_TOTAL_MASK) {
   1712 			IXDR_GET_U_HYPER(ptr, gesp->n4g_sb.f_files);
   1713 		}
   1714 	}
   1715 	if (resbmap &
   1716 	    (FATTR4_FS_LOCATIONS_MASK |
   1717 	    FATTR4_HIDDEN_MASK |
   1718 	    FATTR4_HOMOGENEOUS_MASK)) {
   1719 
   1720 		if (resbmap & FATTR4_FS_LOCATIONS_MASK) {
   1721 			ASSERT(0);
   1722 		}
   1723 		if (resbmap & FATTR4_HIDDEN_MASK) {
   1724 			ASSERT(0);
   1725 		}
   1726 		if (resbmap & FATTR4_HOMOGENEOUS_MASK) {
   1727 			truefalse = IXDR_GET_U_INT32(ptr);
   1728 			gesp->n4g_pc4.pc4_homogeneous =
   1729 			    (truefalse ? TRUE : FALSE);
   1730 		}
   1731 	}
   1732 	if (resbmap &
   1733 	    (FATTR4_MAXFILESIZE_MASK |
   1734 	    FATTR4_MAXLINK_MASK |
   1735 	    FATTR4_MAXNAME_MASK |
   1736 	    FATTR4_MAXREAD_MASK |
   1737 	    FATTR4_MAXWRITE_MASK)) {
   1738 
   1739 		if (resbmap & FATTR4_MAXFILESIZE_MASK) {
   1740 			IXDR_GET_U_HYPER(ptr, gesp->n4g_maxfilesize);
   1741 		}
   1742 		if (resbmap & FATTR4_MAXLINK_MASK) {
   1743 			gesp->n4g_pc4.pc4_link_max = IXDR_GET_U_INT32(ptr);
   1744 		}
   1745 		if (resbmap & FATTR4_MAXNAME_MASK) {
   1746 			gesp->n4g_pc4.pc4_name_max = IXDR_GET_U_INT32(ptr);
   1747 			gesp->n4g_sb.f_namemax = gesp->n4g_pc4.pc4_name_max;
   1748 		}
   1749 		if (resbmap & FATTR4_MAXREAD_MASK) {
   1750 			IXDR_GET_U_HYPER(ptr, gesp->n4g_maxread);
   1751 		}
   1752 		if (resbmap & FATTR4_MAXWRITE_MASK) {
   1753 			IXDR_GET_U_HYPER(ptr, gesp->n4g_maxwrite);
   1754 		}
   1755 	}
   1756 	if (resbmap &
   1757 	    (FATTR4_MIMETYPE_MASK |
   1758 	    FATTR4_MODE_MASK |
   1759 	    FATTR4_NO_TRUNC_MASK |
   1760 	    FATTR4_NUMLINKS_MASK)) {
   1761 
   1762 		if (resbmap & FATTR4_MIMETYPE_MASK) {
   1763 			ASSERT(0);
   1764 		}
   1765 		if (resbmap & FATTR4_MODE_MASK) {
   1766 			vap->va_mode = IXDR_GET_U_INT32(ptr);
   1767 			vap->va_mask |= AT_MODE;
   1768 		}
   1769 		if (resbmap & FATTR4_NO_TRUNC_MASK) {
   1770 			truefalse = IXDR_GET_U_INT32(ptr);
   1771 			gesp->n4g_pc4.pc4_no_trunc =
   1772 			    (truefalse ? TRUE : FALSE);
   1773 		}
   1774 		if (resbmap & FATTR4_NUMLINKS_MASK) {
   1775 			vap->va_nlink = IXDR_GET_U_INT32(ptr);
   1776 			vap->va_mask |= AT_NLINK;
   1777 		}
   1778 	}
   1779 	if (resbmap &
   1780 	    (FATTR4_OWNER_MASK |
   1781 	    FATTR4_OWNER_GROUP_MASK |
   1782 	    FATTR4_QUOTA_AVAIL_HARD_MASK |
   1783 	    FATTR4_QUOTA_AVAIL_SOFT_MASK)) {
   1784 
   1785 		if (resbmap & FATTR4_OWNER_MASK) {
   1786 			uint_t *owner_length, ol;
   1787 			char *owner_val = NULL;
   1788 			utf8string ov;
   1789 			int error;
   1790 
   1791 			/* get the OWNER_LENGTH */
   1792 			ol = IXDR_GET_U_INT32(ptr);
   1793 
   1794 			/* Manage the owner length location */
   1795 			if (pug && ol <= MAX_OG_NAME) {
   1796 				owner_length = &pug->u_curr.utf8string_len;
   1797 				*owner_length = ol;
   1798 			} else {
   1799 				owner_length = &ol;
   1800 			}
   1801 
   1802 			/* find memory to store the decode */
   1803 			if (*owner_length > MAX_OG_NAME || pug == NULL)
   1804 				owner_val = (char *)ptr;
   1805 			else
   1806 				owner_val = (char *)ptr;
   1807 
   1808 			/* Optimize for matching if called for */
   1809 			if (pug &&
   1810 			    *owner_length == pug->u_last.utf8string_len &&
   1811 			    bcmp(owner_val, pug->u_last.utf8string_val,
   1812 			    *owner_length) == 0) {
   1813 				vap->va_uid = pug->uid;
   1814 				vap->va_mask |= AT_UID;
   1815 			} else {
   1816 				uid_t uid;
   1817 
   1818 				ov.utf8string_len = *owner_length;
   1819 				ov.utf8string_val = owner_val;
   1820 				error = nfs_idmap_str_uid(&ov, &uid, FALSE);
   1821 				/*
   1822 				 * String was mapped, but to nobody because
   1823 				 * we are nfsmapid, indicate it should not
   1824 				 * be cached.
   1825 				 */
   1826 				if (error == ENOTSUP) {
   1827 					error = 0;
   1828 					garp->n4g_attrwhy =
   1829 					    NFS4_GETATTR_NOCACHE_OK;
   1830 				}
   1831 
   1832 				if (error) {
   1833 					garp->n4g_attrerr = error;
   1834 					garp->n4g_attrwhy =
   1835 					    NFS4_GETATTR_ATUID_ERR;
   1836 				} else {
   1837 					vap->va_uid = uid;
   1838 					vap->va_mask |= AT_UID;
   1839 					/* save the results for next time */
   1840 					if (pug && ol <= MAX_OG_NAME) {
   1841 						pug->uid = uid;
   1842 						pug->u_curr.utf8string_len =
   1843 						    ov.utf8string_len;
   1844 						bcopy(owner_val,
   1845 						    pug->u_curr.utf8string_val,
   1846 						    ol);
   1847 						U_SWAP_CURR_LAST(pug);
   1848 					}
   1849 				}
   1850 			}
   1851 			ptr += RNDUP(ol) / BYTES_PER_XDR_UNIT;
   1852 		}
   1853 		if (resbmap & FATTR4_OWNER_GROUP_MASK) {
   1854 			uint_t *group_length, gl;
   1855 			char *group_val = NULL;
   1856 			utf8string gv;
   1857 			int error;
   1858 
   1859 			/* get the OWNER_GROUP_LENGTH */
   1860 			gl = IXDR_GET_U_INT32(ptr);
   1861 
   1862 			/* Manage the group length location */
   1863 			if (pug && gl <= MAX_OG_NAME) {
   1864 				group_length = &pug->g_curr.utf8string_len;
   1865 				*group_length = gl;
   1866 			} else {
   1867 				group_length = &gl;
   1868 			}
   1869 
   1870 			/* find memory to store the decode */
   1871 			if (*group_length > MAX_OG_NAME || pug == NULL)
   1872 				group_val = (char *)ptr;
   1873 			else
   1874 				group_val = (char *)ptr;
   1875 
   1876 			/* Optimize for matching if called for */
   1877 			if (pug &&
   1878 			    *group_length == pug->g_last.utf8string_len &&
   1879 			    bcmp(group_val, pug->g_last.utf8string_val,
   1880 			    *group_length) == 0) {
   1881 				vap->va_gid = pug->gid;
   1882 				vap->va_mask |= AT_GID;
   1883 			} else {
   1884 				uid_t gid;
   1885 
   1886 				gv.utf8string_len = *group_length;
   1887 				gv.utf8string_val = group_val;
   1888 				error = nfs_idmap_str_gid(&gv, &gid, FALSE);
   1889 				/*
   1890 				 * String was mapped, but to nobody because
   1891 				 * we are nfsmapid, indicate it should not
   1892 				 * be cached.
   1893 				 */
   1894 				if (error == ENOTSUP) {
   1895 					error = 0;
   1896 					garp->n4g_attrwhy =
   1897 					    NFS4_GETATTR_NOCACHE_OK;
   1898 				}
   1899 
   1900 				if (error) {
   1901 					garp->n4g_attrerr = error;
   1902 					garp->n4g_attrwhy =
   1903 					    NFS4_GETATTR_ATGID_ERR;
   1904 				} else {
   1905 					vap->va_gid = gid;
   1906 					vap->va_mask |= AT_GID;
   1907 					if (pug && gl <= MAX_OG_NAME) {
   1908 						pug->gid = gid;
   1909 						pug->g_curr.utf8string_len =
   1910 						    gv.utf8string_len;
   1911 						bcopy(group_val,
   1912 						    pug->g_curr.utf8string_val,
   1913 						    gl);
   1914 						G_SWAP_CURR_LAST(pug);
   1915 					}
   1916 				}
   1917 			}
   1918 			ptr += RNDUP(gl) / BYTES_PER_XDR_UNIT;
   1919 		}
   1920 		if (resbmap & FATTR4_QUOTA_AVAIL_HARD_MASK) {
   1921 			ASSERT(0);
   1922 		}
   1923 		if (resbmap & FATTR4_QUOTA_AVAIL_SOFT_MASK) {
   1924 			ASSERT(0);
   1925 		}
   1926 	}
   1927 	if (resbmap &
   1928 	    (FATTR4_QUOTA_USED_MASK |
   1929 	    FATTR4_SPACE_AVAIL_MASK |
   1930 	    FATTR4_SPACE_FREE_MASK |
   1931 	    FATTR4_SPACE_TOTAL_MASK |
   1932 	    FATTR4_SPACE_USED_MASK |
   1933 	    FATTR4_SYSTEM_MASK)) {
   1934 
   1935 		if (resbmap & FATTR4_QUOTA_USED_MASK) {
   1936 			ASSERT(0);
   1937 		}
   1938 		if (resbmap & FATTR4_RAWDEV_MASK) {
   1939 			fattr4_rawdev rawdev;
   1940 
   1941 			rawdev.specdata1 = IXDR_GET_U_INT32(ptr);
   1942 			rawdev.specdata2 = IXDR_GET_U_INT32(ptr);
   1943 
   1944 			if (vap->va_type == VCHR || vap->va_type == VBLK) {
   1945 				vap->va_rdev = makedevice(rawdev.specdata1,
   1946 				    rawdev.specdata2);
   1947 			} else {
   1948 				vap->va_rdev = 0;
   1949 			}
   1950 			vap->va_mask |= AT_RDEV;
   1951 		}
   1952 		if (resbmap & FATTR4_SPACE_AVAIL_MASK) {
   1953 			IXDR_GET_U_HYPER(ptr, gesp->n4g_sb.f_bavail);
   1954 			gesp->n4g_sb.f_bavail /= DEV_BSIZE;
   1955 		}
   1956 		if (resbmap & FATTR4_SPACE_FREE_MASK) {
   1957 			IXDR_GET_U_HYPER(ptr, gesp->n4g_sb.f_bfree);
   1958 			gesp->n4g_sb.f_bfree /= DEV_BSIZE;
   1959 		}
   1960 		if (resbmap & FATTR4_SPACE_TOTAL_MASK) {
   1961 			IXDR_GET_U_HYPER(ptr, gesp->n4g_sb.f_blocks);
   1962 			gesp->n4g_sb.f_blocks /= DEV_BSIZE;
   1963 		}
   1964 		if (resbmap & FATTR4_SPACE_USED_MASK) {
   1965 			uint64_t space_used;
   1966 			IXDR_GET_U_HYPER(ptr, space_used);
   1967 
   1968 			/* Compute space depending on device type */
   1969 			ASSERT((vap->va_mask & AT_TYPE));
   1970 			if (vap->va_type == VREG || vap->va_type == VDIR ||
   1971 			    vap->va_type == VLNK) {
   1972 				vap->va_nblocks = (u_longlong_t)
   1973 				    ((space_used + (offset4)DEV_BSIZE -
   1974 				    (offset4)1) / (offset4)DEV_BSIZE);
   1975 			} else {
   1976 				vap->va_nblocks = 0;
   1977 			}
   1978 			vap->va_mask |= AT_NBLOCKS;
   1979 		}
   1980 		if (resbmap & FATTR4_SYSTEM_MASK) {
   1981 			ASSERT(0);
   1982 		}
   1983 	}
   1984 	if (resbmap &
   1985 	    (FATTR4_TIME_ACCESS_MASK |
   1986 	    FATTR4_TIME_ACCESS_SET_MASK |
   1987 	    FATTR4_TIME_BACKUP_MASK |
   1988 	    FATTR4_TIME_CREATE_MASK |
   1989 	    FATTR4_TIME_DELTA_MASK |
   1990 	    FATTR4_TIME_METADATA_MASK |
   1991 	    FATTR4_TIME_MODIFY_MASK |
   1992 	    FATTR4_TIME_MODIFY_SET_MASK |
   1993 	    FATTR4_MOUNTED_ON_FILEID_MASK)) {
   1994 
   1995 		if (resbmap & FATTR4_TIME_ACCESS_MASK) {
   1996 			nfstime4 atime;
   1997 			int error;
   1998 
   1999 			IXDR_GET_U_HYPER(ptr, atime.seconds);
   2000 			atime.nseconds = IXDR_GET_U_INT32(ptr);
   2001 
   2002 			error = nfs4_time_ntov(&atime, &vap->va_atime);
   2003 			if (error) {
   2004 				garp->n4g_attrerr = error;
   2005 				garp->n4g_attrwhy = NFS4_GETATTR_ATATIME_ERR;
   2006 			}
   2007 			vap->va_mask |= AT_ATIME;
   2008 		}
   2009 		if (resbmap & FATTR4_TIME_ACCESS_SET_MASK) {
   2010 			ASSERT(0);
   2011 		}
   2012 		if (resbmap & FATTR4_TIME_BACKUP_MASK) {
   2013 			ASSERT(0);
   2014 		}
   2015 		if (resbmap & FATTR4_TIME_CREATE_MASK) {
   2016 			ASSERT(0);
   2017 		}
   2018 		if (resbmap & FATTR4_TIME_DELTA_MASK) {
   2019 			IXDR_GET_U_HYPER(ptr, gesp->n4g_delta.seconds);
   2020 			gesp->n4g_delta.nseconds = IXDR_GET_U_INT32(ptr);
   2021 		}
   2022 		if (resbmap & FATTR4_TIME_METADATA_MASK) {
   2023 			nfstime4 mdt;
   2024 			int error;
   2025 
   2026 			IXDR_GET_U_HYPER(ptr, mdt.seconds);
   2027 			mdt.nseconds = IXDR_GET_U_INT32(ptr);
   2028 
   2029 			error = nfs4_time_ntov(&mdt, &vap->va_ctime);
   2030 			if (error) {
   2031 				garp->n4g_attrerr = error;
   2032 				garp->n4g_attrwhy = NFS4_GETATTR_ATCTIME_ERR;
   2033 			}
   2034 			vap->va_mask |= AT_CTIME;
   2035 		}
   2036 		if (resbmap & FATTR4_TIME_MODIFY_MASK) {
   2037 			nfstime4 mtime;
   2038 			int error;
   2039 
   2040 			IXDR_GET_U_HYPER(ptr, mtime.seconds);
   2041 			mtime.nseconds = IXDR_GET_U_INT32(ptr);
   2042 
   2043 			error = nfs4_time_ntov(&mtime, &vap->va_mtime);
   2044 			if (error) {
   2045 				garp->n4g_attrerr = error;
   2046 				garp->n4g_attrwhy = NFS4_GETATTR_ATMTIME_ERR;
   2047 			}
   2048 			vap->va_mask |= AT_MTIME;
   2049 		}
   2050 		if (resbmap & FATTR4_TIME_MODIFY_SET_MASK) {
   2051 			ASSERT(0);
   2052 		}
   2053 		if (resbmap & FATTR4_MOUNTED_ON_FILEID_MASK) {
   2054 			IXDR_GET_U_HYPER(ptr, garp->n4g_mon_fid);
   2055 			garp->n4g_mon_fid_valid = 1;
   2056 		}
   2057 	}
   2058 
   2059 	/*
   2060 	 * FATTR4_ACL_MASK is not yet supported by this function, but
   2061 	 * we check against it anyway, in case it ever is.
   2062 	 */
   2063 	if (resbmap & ~(NFS4_VATTR_MASK | FATTR4_ACL_MASK)) {
   2064 		/* copy only if not provided */
   2065 		if (garp->n4g_ext_res == NULL) {
   2066 			garp->n4g_ext_res = kmem_alloc(sizeof (ges), KM_SLEEP);
   2067 			bcopy(&ges, garp->n4g_ext_res, sizeof (ges));
   2068 		}
   2069 	}
   2070 
   2071 	return (TRUE);
   2072 }
   2073 
   2074 
   2075 /*
   2076  * "." and ".." buffers for filling in on read and readdir
   2077  * calls. Intialize the first time and fill in on every
   2078  * call to to readdir.
   2079  */
   2080 char	*nfs4_dot_entries;
   2081 char	*nfs4_dot_dot_entry;
   2082 
   2083 /*
   2084  * Create the "." or ".." and pad the buffer once so they are
   2085  * copied out as required into the user supplied buffer everytime.
   2086  * DIRENT64_RECLEN(sizeof (".") - 1) = DIRENT64_RECLEN(1)
   2087  * DIRENT64_RECLEN(sizeof ("..") - 1) = DIRENT64_RECLEN(2)
   2088  */
   2089 void
   2090 nfs4_init_dot_entries()
   2091 {
   2092 	struct dirent64 *odp;
   2093 
   2094 	/*
   2095 	 * zalloc it so it zeros the buffer out. Need
   2096 	 * to just do it once.
   2097 	 */
   2098 	nfs4_dot_entries = kmem_zalloc(DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2),
   2099 	    KM_SLEEP);
   2100 
   2101 	odp = (struct dirent64 *)nfs4_dot_entries;
   2102 	odp->d_off = 1; /* magic cookie for "." entry */
   2103 	odp->d_reclen = DIRENT64_RECLEN(1);
   2104 	odp->d_name[0] = '.';
   2105 	odp->d_name[1] = '\0';
   2106 
   2107 	nfs4_dot_dot_entry = nfs4_dot_entries + DIRENT64_RECLEN(1);
   2108 	odp = (struct dirent64 *)nfs4_dot_dot_entry;
   2109 
   2110 	odp->d_off = 2;
   2111 	odp->d_reclen = DIRENT64_RECLEN(2);
   2112 	odp->d_name[0] = '.';
   2113 	odp->d_name[1] = '.';
   2114 	odp->d_name[2] = '\0';
   2115 }
   2116 
   2117 void
   2118 nfs4_destroy_dot_entries()
   2119 {
   2120 	if (nfs4_dot_entries)
   2121 		kmem_free(nfs4_dot_entries, DIRENT64_RECLEN(1) +
   2122 		    DIRENT64_RECLEN(2));
   2123 
   2124 	nfs4_dot_entries = nfs4_dot_dot_entry = NULL;
   2125 }
   2126 
   2127 bool_t
   2128 xdr_READDIR4res_clnt(XDR *xdrs, READDIR4res_clnt *objp, READDIR4args *aobjp)
   2129 {
   2130 	bool_t more_data;
   2131 	rddir4_cache *rdc = aobjp->rdc;
   2132 	dirent64_t *dp = NULL;
   2133 	int entry_length = 0;
   2134 	int space_left = 0;
   2135 	bitmap4 resbmap;
   2136 	uint32_t attrlen;
   2137 	nfs4_ga_res_t gar;
   2138 	struct nfs4_ga_ext_res ges;
   2139 	uint64_t last_cookie = 0;
   2140 	int skip_to_end;
   2141 	ug_cache_t *pug = NULL;
   2142 
   2143 	ASSERT(xdrs->x_op == XDR_DECODE);
   2144 	ASSERT(rdc->entries == NULL);
   2145 	ASSERT(aobjp->dircount > 0);
   2146 
   2147 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2148 		return (FALSE);
   2149 	if (objp->status != NFS4_OK)
   2150 		return (TRUE);
   2151 
   2152 	gar.n4g_va.va_mask = 0;
   2153 	gar.n4g_change_valid = 0;
   2154 	gar.n4g_mon_fid_valid = 0;
   2155 	gar.n4g_fsid_valid = 0;
   2156 	gar.n4g_vsa.vsa_mask = 0;
   2157 	gar.n4g_attrwhy = NFS4_GETATTR_OP_OK;
   2158 	ges.n4g_pc4.pc4_cache_valid = 0;
   2159 	ges.n4g_pc4.pc4_xattr_valid = 0;
   2160 	gar.n4g_ext_res = &ges;
   2161 
   2162 	/* READDIR4res_clnt_free needs to kmem_free this buffer */
   2163 	rdc->entries = kmem_alloc(aobjp->dircount, KM_SLEEP);
   2164 
   2165 	dp = (dirent64_t *)rdc->entries;
   2166 	rdc->entlen = rdc->buflen = space_left = aobjp->dircount;
   2167 
   2168 	/* Fill in dot and dot-dot if needed */
   2169 	if (rdc->nfs4_cookie == (nfs_cookie4) 0 ||
   2170 	    rdc->nfs4_cookie == (nfs_cookie4) 1) {
   2171 
   2172 		if (rdc->nfs4_cookie == (nfs_cookie4)0) {
   2173 			bcopy(nfs4_dot_entries, rdc->entries,
   2174 			    DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2));
   2175 			objp->dotp = dp;
   2176 			dp = (struct dirent64 *)(((char *)dp) +
   2177 			    DIRENT64_RECLEN(1));
   2178 			objp->dotdotp = dp;
   2179 			dp = (struct dirent64 *)(((char *)dp) +
   2180 			    DIRENT64_RECLEN(2));
   2181 			space_left -= DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2);
   2182 
   2183 		} else	{	/* for ".." entry */
   2184 			bcopy(nfs4_dot_dot_entry, rdc->entries,
   2185 			    DIRENT64_RECLEN(2));
   2186 			objp->dotp = NULL;
   2187 			objp->dotdotp = dp;
   2188 			dp = (struct dirent64 *)(((char *)dp) +
   2189 			    DIRENT64_RECLEN(2));
   2190 			space_left -= DIRENT64_RECLEN(2);
   2191 		}
   2192 		/* Magic NFSv4 number for entry after start */
   2193 		last_cookie = 2;
   2194 	}
   2195 
   2196 	/* Get the cookie VERIFIER */
   2197 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cookieverf))
   2198 		goto noentries;
   2199 
   2200 	/* Get the do-we-have-a-next-entry BOOL */
   2201 	if (!xdr_bool(xdrs, &more_data))
   2202 		goto noentries;
   2203 
   2204 	if (aobjp->attr_request & (FATTR4_OWNER_MASK | FATTR4_OWNER_GROUP_MASK))
   2205 		pug = alloc_ugcache();
   2206 
   2207 	skip_to_end = 0;
   2208 	while (more_data) {
   2209 		uint_t namelen;
   2210 		uint64_t cookie;
   2211 
   2212 		/* Get the COOKIE */
   2213 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&cookie))
   2214 			goto noentries;
   2215 
   2216 		/* Get the LENGTH of the entry name */
   2217 		if (!xdr_u_int(xdrs, &namelen))
   2218 			goto noentries;
   2219 
   2220 		if (!skip_to_end) {
   2221 			/*
   2222 			 * With the length of the directory entry name
   2223 			 * in hand, figure out if there is room left
   2224 			 * to encode it for the requestor.  If not,
   2225 			 * that is okay, but the rest of the readdir
   2226 			 * operation result must be decoded in the
   2227 			 * case there are following operations
   2228 			 * in the compound request.  Therefore, mark
   2229 			 * the rest of the response as "skip" and
   2230 			 * decode or skip the remaining data
   2231 			 */
   2232 			entry_length = DIRENT64_RECLEN(namelen);
   2233 			if (space_left < entry_length)
   2234 				skip_to_end = 1;
   2235 		}
   2236 
   2237 		/* Get the NAME of the entry */
   2238 		if (!skip_to_end) {
   2239 			if (!xdr_opaque(xdrs, dp->d_name, namelen))
   2240 				goto noentries;
   2241 			bzero(&dp->d_name[namelen],
   2242 			    DIRENT64_NAMELEN(entry_length) - namelen);
   2243 			dp->d_off = last_cookie = cookie;
   2244 			dp->d_reclen = entry_length;
   2245 		} else {
   2246 			if (!XDR_CONTROL(xdrs, XDR_SKIPBYTES, &namelen))
   2247 				goto noentries;
   2248 		}
   2249 
   2250 		/* Get the attribute BITMAP */
   2251 		if (!xdr_bitmap4(xdrs, &resbmap))
   2252 			goto noentries;
   2253 		/* Get the LENGTH of the attributes */
   2254 		if (!xdr_u_int(xdrs, (uint_t *)&attrlen))
   2255 			goto noentries;
   2256 
   2257 		/* Get the ATTRIBUTES */
   2258 		if (!skip_to_end) {
   2259 			uint32_t *ptr;
   2260 
   2261 			if (!(resbmap & FATTR4_ACL_MASK) &&
   2262 			    (ptr = (uint32_t *)XDR_INLINE(xdrs, attrlen))
   2263 			    != NULL) {
   2264 				if (!xdr_ga_fattr_res_inline(ptr, &gar, resbmap,
   2265 				    aobjp->attr_request, aobjp->mi, pug))
   2266 					goto noentries;
   2267 			} else {
   2268 				if (!xdr_ga_fattr_res(xdrs, &gar, resbmap,
   2269 				    aobjp->attr_request, aobjp->mi, pug))
   2270 					goto noentries;
   2271 			}
   2272 
   2273 			/* Fill in the d_ino per the server's fid values */
   2274 			/*
   2275 			 * Important to note that the mounted on fileid
   2276 			 * is returned in d_ino if supported.  This is
   2277 			 * expected, readdir returns the mounted on fileid
   2278 			 * while stat() returns the fileid of the object
   2279 			 * on "top" of the mount.
   2280 			 */
   2281 			if (gar.n4g_mon_fid_valid)
   2282 				dp->d_ino = gar.n4g_mon_fid;
   2283 			else if (gar.n4g_va.va_mask & AT_NODEID)
   2284 				dp->d_ino = gar.n4g_va.va_nodeid;
   2285 			else
   2286 				dp->d_ino = 0;
   2287 
   2288 			/* See about creating an rnode for this entry */
   2289 			if ((resbmap &
   2290 			    (NFS4_VATTR_MASK | FATTR4_FILEHANDLE_MASK)) ==
   2291 			    (NFS4_VATTR_MASK | FATTR4_FILEHANDLE_MASK)) {
   2292 				nfs4_sharedfh_t *sfhp;
   2293 				vnode_t *vp;
   2294 
   2295 				sfhp = sfh4_put(&ges.n4g_fh_u.n4g_fh,
   2296 				    aobjp->mi, NULL);
   2297 				vp = makenfs4node(sfhp, &gar,
   2298 				    aobjp->dvp->v_vfsp,
   2299 				    aobjp->t,
   2300 				    aobjp->cr,
   2301 				    aobjp->dvp,
   2302 				    fn_get(VTOSV(aobjp->dvp)->sv_name,
   2303 				    dp->d_name, sfhp));
   2304 				sfh4_rele(&sfhp);
   2305 				dnlc_update(aobjp->dvp, dp->d_name, vp);
   2306 				VN_RELE(vp);
   2307 			}
   2308 
   2309 			dp = (struct dirent64 *)(((caddr_t)dp) + dp->d_reclen);
   2310 
   2311 			space_left -= entry_length;
   2312 
   2313 		} else {
   2314 			if (!XDR_CONTROL(xdrs, XDR_SKIPBYTES, &attrlen))
   2315 				goto noentries;
   2316 		}
   2317 
   2318 		/* Get the do-we-have-a-next-entry BOOL */
   2319 		if (!xdr_bool(xdrs, &more_data))
   2320 			goto noentries;
   2321 	}
   2322 
   2323 	if (pug) {
   2324 		kmem_free(pug, sizeof (ug_cache_t));
   2325 		pug = NULL;
   2326 	}
   2327 
   2328 	/*
   2329 	 * Finish up the rddir cache
   2330 	 * If no entries were returned, free up buffer &
   2331 	 * set ncookie to the starting cookie for this
   2332 	 * readdir request so that the direof caching
   2333 	 * will work properly.
   2334 	 */
   2335 	ASSERT(rdc->entries);
   2336 	if (last_cookie == 0) {
   2337 		kmem_free(rdc->entries, rdc->entlen);
   2338 		rdc->entries = NULL;
   2339 		last_cookie = rdc->nfs4_cookie;
   2340 	}
   2341 
   2342 	rdc->actlen = rdc->entlen - space_left;
   2343 	rdc->nfs4_ncookie = last_cookie;
   2344 
   2345 	/* Get the EOF marker */
   2346 	if (!xdr_bool(xdrs, &objp->eof))
   2347 		goto noentries;
   2348 
   2349 	/*
   2350 	 * If the server returns eof and there were no
   2351 	 * skipped entries, set eof
   2352 	 */
   2353 	rdc->eof = (objp->eof && !skip_to_end) ? TRUE : FALSE;
   2354 
   2355 	/*
   2356 	 * If we encoded entries we are done
   2357 	 */
   2358 	if (rdc->entries) {
   2359 		rdc->error = 0;
   2360 		return (TRUE);
   2361 	}
   2362 
   2363 	/*
   2364 	 * If there were no entries and we skipped because
   2365 	 * there was not enough space, return EINVAL
   2366 	 */
   2367 	if (skip_to_end) {
   2368 		rdc->error = EINVAL;
   2369 		return (TRUE);
   2370 	}
   2371 
   2372 	/*
   2373 	 * No entries, nothing skipped, and EOF, return OK.
   2374 	 */
   2375 	if (objp->eof == TRUE) {
   2376 		rdc->error = 0;
   2377 		return (TRUE);
   2378 	}
   2379 
   2380 	/*
   2381 	 * No entries, nothing skipped, and not EOF
   2382 	 * probably a bad cookie, return ENOENT.
   2383 	 */
   2384 	rdc->error = ENOENT;
   2385 	return (TRUE);
   2386 
   2387 noentries:
   2388 	if (rdc->entries) {
   2389 		kmem_free(rdc->entries, rdc->entlen);
   2390 		rdc->entries = NULL;
   2391 	}
   2392 	if (pug)
   2393 		kmem_free(pug, sizeof (ug_cache_t));
   2394 	rdc->error = EIO;
   2395 	return (FALSE);
   2396 }
   2397 
   2398 /*
   2399  * xdr_ga_res
   2400  *
   2401  * Returns: FALSE on raw data processing errors, TRUE otherwise.
   2402  *
   2403  * This function pre-processes the OP_GETATTR response, and then
   2404  * calls common routines to process the GETATTR fattr4 results into
   2405  * vnode attributes and other components that the client is interested
   2406  * in. If an error other than an RPC error is encountered, the details
   2407  * of the error are filled into objp, although the result of the
   2408  * processing is set to TRUE.
   2409  */
   2410 static bool_t
   2411 xdr_ga_res(XDR *xdrs, GETATTR4res *objp, GETATTR4args *aobjp)
   2412 {
   2413 #ifdef INLINE
   2414 	uint32_t *ptr;
   2415 #endif
   2416 	bitmap4 resbmap;
   2417 	uint32_t attrlen;
   2418 
   2419 	ASSERT(xdrs->x_op == XDR_DECODE);
   2420 
   2421 	/* Initialize objp attribute error values */
   2422 	objp->ga_res.n4g_attrerr =
   2423 	    objp->ga_res.n4g_attrwhy = NFS4_GETATTR_OP_OK;
   2424 
   2425 	if (!xdr_bitmap4(xdrs, &resbmap))
   2426 		return (FALSE);
   2427 
   2428 	/* save the response bitmap for the caller */
   2429 	objp->ga_res.n4g_resbmap = resbmap;
   2430 
   2431 	/* attrlen */
   2432 	if (!XDR_GETINT32(xdrs, (int32_t *)&attrlen))
   2433 		return (FALSE);
   2434 
   2435 	/*
   2436 	 * Handle case where request and response bitmaps don't match.
   2437 	 */
   2438 	if (aobjp->attr_request && aobjp->attr_request != resbmap) {
   2439 		bitmap4 deltabmap;
   2440 
   2441 		/*
   2442 		 * Return error for case where server sent extra attributes
   2443 		 * because the "unknown" attributes may be anywhere in the
   2444 		 * xdr stream and can't be properly processed.
   2445 		 */
   2446 		deltabmap = ((aobjp->attr_request ^ resbmap) & resbmap);
   2447 		if (deltabmap) {
   2448 			objp->ga_res.n4g_attrerr = EINVAL;
   2449 			objp->ga_res.n4g_attrwhy = NFS4_GETATTR_BITMAP_ERR;
   2450 			return (TRUE);
   2451 		}
   2452 
   2453 		/*
   2454 		 * Return error for case where there is a mandatory
   2455 		 * attribute missing in the server response. Note that
   2456 		 * missing recommended attributes are evaluated in the
   2457 		 * specific routines that decode the server response.
   2458 		 */
   2459 		deltabmap = ((aobjp->attr_request ^ resbmap)
   2460 		    & aobjp->attr_request);
   2461 		if ((deltabmap & FATTR4_MANDATTR_MASK)) {
   2462 			objp->ga_res.n4g_attrerr = EINVAL;
   2463 			objp->ga_res.n4g_attrwhy = NFS4_GETATTR_MANDATTR_ERR;
   2464 			return (TRUE);
   2465 		}
   2466 	}
   2467 
   2468 	/* Check to see if the attrs can be inlined and go for it if so */
   2469 #ifdef INLINE
   2470 	if (!(resbmap & FATTR4_ACL_MASK) &&
   2471 	    (ptr = (uint32_t *)XDR_INLINE(xdrs, attrlen)) != NULL)
   2472 		return (xdr_ga_fattr_res_inline(ptr, &objp->ga_res,
   2473 		    resbmap, aobjp->attr_request, aobjp->mi, NULL));
   2474 	else
   2475 #endif
   2476 		return (xdr_ga_fattr_res(xdrs, &objp->ga_res,
   2477 		    resbmap, aobjp->attr_request, aobjp->mi, NULL));
   2478 }
   2479 
   2480 #if defined(DEBUG) && !defined(lint)
   2481 /*
   2482  * We assume that an enum is a 32-bit value, check it once
   2483  */
   2484 static enum szchk { SZVAL } szchkvar;
   2485 #endif
   2486 
   2487 bool_t
   2488 xdr_settime4(XDR *xdrs, settime4 *objp)
   2489 {
   2490 #if defined(DEBUG) && !defined(lint)
   2491 	ASSERT(sizeof (szchkvar) == sizeof (int32_t));
   2492 #endif
   2493 	if (xdrs->x_op == XDR_FREE)
   2494 		return (TRUE);
   2495 
   2496 	if (!xdr_int(xdrs, (int *)&objp->set_it))
   2497 		return (FALSE);
   2498 	if (objp->set_it != SET_TO_CLIENT_TIME4)
   2499 		return (TRUE);
   2500 	/* xdr_nfstime4 */
   2501 	if (!xdr_longlong_t(xdrs, (longlong_t *)&objp->time.seconds))
   2502 		return (FALSE);
   2503 	return (xdr_u_int(xdrs, &objp->time.nseconds));
   2504 }
   2505 
   2506 static bool_t
   2507 xdr_fattr4(XDR *xdrs, fattr4 *objp)
   2508 {
   2509 	if (xdrs->x_op != XDR_FREE) {
   2510 		if (!xdr_bitmap4(xdrs, &objp->attrmask))
   2511 			return (FALSE);
   2512 		return (xdr_bytes(xdrs, (char **)&objp->attrlist4,
   2513 		    (uint_t *)&objp->attrlist4_len, NFS4_FATTR4_LIMIT));
   2514 	}
   2515 
   2516 	/*
   2517 	 * Optimized free case
   2518 	 */
   2519 	if (objp->attrlist4 != NULL)
   2520 		kmem_free(objp->attrlist4, objp->attrlist4_len);
   2521 	return (TRUE);
   2522 }
   2523 
   2524 static bool_t
   2525 xdr_ACCESS4res(XDR *xdrs, ACCESS4res *objp)
   2526 {
   2527 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2528 		return (FALSE);
   2529 	if (objp->status != NFS4_OK)
   2530 		return (TRUE);
   2531 	if (!xdr_u_int(xdrs, &objp->supported))
   2532 		return (FALSE);
   2533 	return (xdr_u_int(xdrs, &objp->access));
   2534 }
   2535 
   2536 static bool_t
   2537 xdr_CLOSE4args(XDR *xdrs, CLOSE4args *objp)
   2538 {
   2539 	if (!xdr_u_int(xdrs, &objp->seqid))
   2540 		return (FALSE);
   2541 	if (!xdr_u_int(xdrs, &objp->open_stateid.seqid))
   2542 		return (FALSE);
   2543 	return (xdr_opaque(xdrs, objp->open_stateid.other, 12));
   2544 }
   2545 
   2546 static bool_t
   2547 xdr_CLOSE4res(XDR *xdrs, CLOSE4res *objp)
   2548 {
   2549 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2550 		return (FALSE);
   2551 	if (objp->status != NFS4_OK)
   2552 		return (TRUE);
   2553 	if (!xdr_u_int(xdrs, &objp->open_stateid.seqid))
   2554 		return (FALSE);
   2555 	return (xdr_opaque(xdrs, objp->open_stateid.other, 12));
   2556 }
   2557 
   2558 static bool_t
   2559 xdr_CREATE4args(XDR *xdrs, CREATE4args *objp)
   2560 {
   2561 	if (xdrs->x_op != XDR_FREE) {
   2562 		if (!xdr_int(xdrs, (int32_t *)&objp->type))
   2563 			return (FALSE);
   2564 		switch (objp->type) {
   2565 		case NF4LNK:
   2566 			if (!xdr_bytes(xdrs,
   2567 			    (char **)&objp->ftype4_u.linkdata.utf8string_val,
   2568 			    (uint_t *)&objp->ftype4_u.linkdata.utf8string_len,
   2569 			    NFS4_MAX_UTF8STRING))
   2570 				return (FALSE);
   2571 			break;
   2572 		case NF4BLK:
   2573 		case NF4CHR:
   2574 			if (!xdr_u_int(xdrs, &objp->ftype4_u.devdata.specdata1))
   2575 				return (FALSE);
   2576 			if (!xdr_u_int(xdrs, &objp->ftype4_u.devdata.specdata2))
   2577 				return (FALSE);
   2578 			break;
   2579 		case NF4SOCK:
   2580 		case NF4FIFO:
   2581 		case NF4DIR:
   2582 		default:
   2583 			break;	/* server should return NFS4ERR_BADTYPE */
   2584 		}
   2585 		if (!xdr_bytes(xdrs, (char **)&objp->objname.utf8string_val,
   2586 		    (uint_t *)&objp->objname.utf8string_len,
   2587 		    NFS4_MAX_UTF8STRING))
   2588 			return (FALSE);
   2589 		return (xdr_fattr4(xdrs, &objp->createattrs));
   2590 	}
   2591 
   2592 	/*
   2593 	 * Optimized free case
   2594 	 */
   2595 	if (objp->type == NF4LNK) {
   2596 		if (objp->ftype4_u.linkdata.utf8string_val != NULL)
   2597 			kmem_free(objp->ftype4_u.linkdata.utf8string_val,
   2598 			    objp->ftype4_u.linkdata.utf8string_len);
   2599 	}
   2600 	if (objp->objname.utf8string_val != NULL)
   2601 		kmem_free(objp->objname.utf8string_val,
   2602 		    objp->objname.utf8string_len);
   2603 	return (xdr_fattr4(xdrs, &objp->createattrs));
   2604 }
   2605 
   2606 static bool_t
   2607 xdr_CREATE4cargs(XDR *xdrs, CREATE4cargs *objp)
   2608 {
   2609 	int len;
   2610 
   2611 	ASSERT(xdrs->x_op == XDR_ENCODE);
   2612 
   2613 	if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->type))
   2614 		return (FALSE);
   2615 	switch (objp->type) {
   2616 	case NF4LNK:
   2617 		len = strlen(objp->ftype4_u.clinkdata);
   2618 		if (len > NFS4_MAX_UTF8STRING)
   2619 			return (FALSE);
   2620 		if (!XDR_PUTINT32(xdrs, &len))
   2621 			return (FALSE);
   2622 		if (!xdr_opaque(xdrs, objp->ftype4_u.clinkdata, len))
   2623 			return (FALSE);
   2624 		break;
   2625 	case NF4BLK:
   2626 	case NF4CHR:
   2627 		if (!XDR_PUTINT32(xdrs,
   2628 		    (int32_t *)&objp->ftype4_u.devdata.specdata1))
   2629 			return (FALSE);
   2630 		if (!XDR_PUTINT32(xdrs,
   2631 		    (int32_t *)&objp->ftype4_u.devdata.specdata2))
   2632 			return (FALSE);
   2633 		break;
   2634 	case NF4SOCK:
   2635 	case NF4FIFO:
   2636 	case NF4DIR:
   2637 	default:
   2638 		break;	/* server should return NFS4ERR_BADTYPE */
   2639 	}
   2640 
   2641 	len = strlen(objp->cname);
   2642 	if (len > NFS4_MAX_UTF8STRING)
   2643 		return (FALSE);
   2644 	if (!XDR_PUTINT32(xdrs, &len))
   2645 		return (FALSE);
   2646 	if (!xdr_opaque(xdrs, objp->cname, len))
   2647 		return (FALSE);
   2648 
   2649 	return (xdr_fattr4(xdrs, &objp->createattrs));
   2650 }
   2651 
   2652 static bool_t
   2653 xdr_CREATE4res(XDR *xdrs, CREATE4res *objp)
   2654 {
   2655 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2656 		return (FALSE);
   2657 	if (objp->status != NFS4_OK)
   2658 		return (TRUE);
   2659 	if (!xdr_bool(xdrs, &objp->cinfo.atomic))
   2660 		return (FALSE);
   2661 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cinfo.before))
   2662 		return (FALSE);
   2663 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cinfo.after))
   2664 		return (FALSE);
   2665 	return (xdr_bitmap4(xdrs, &objp->attrset));
   2666 }
   2667 
   2668 static bool_t
   2669 xdr_LINK4res(XDR *xdrs, LINK4res *objp)
   2670 {
   2671 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2672 		return (FALSE);
   2673 	if (objp->status != NFS4_OK)
   2674 		return (TRUE);
   2675 	if (!xdr_bool(xdrs, &objp->cinfo.atomic))
   2676 		return (FALSE);
   2677 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cinfo.before))
   2678 		return (FALSE);
   2679 	return (xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cinfo.after));
   2680 }
   2681 
   2682 static bool_t
   2683 xdr_LOCK4args(XDR *xdrs, LOCK4args *objp)
   2684 {
   2685 	if (xdrs->x_op != XDR_FREE) {
   2686 		if (!xdr_int(xdrs, (int *)&objp->locktype))
   2687 			return (FALSE);
   2688 		if (!xdr_bool(xdrs, &objp->reclaim))
   2689 			return (FALSE);
   2690 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->offset))
   2691 			return (FALSE);
   2692 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->length))
   2693 			return (FALSE);
   2694 		if (!xdr_bool(xdrs, &objp->locker.new_lock_owner))
   2695 			return (FALSE);
   2696 		if (objp->locker.new_lock_owner == TRUE) {
   2697 			if (!xdr_u_int(xdrs, &objp->locker.locker4_u.open_owner.
   2698 			    open_seqid))
   2699 				return (FALSE);
   2700 			if (!xdr_u_int(xdrs, &objp->locker.locker4_u.open_owner.
   2701 			    open_stateid.seqid))
   2702 				return (FALSE);
   2703 			if (!xdr_opaque(xdrs, objp->locker.locker4_u.open_owner.
   2704 			    open_stateid.other, 12))
   2705 				return (FALSE);
   2706 			if (!xdr_u_int(xdrs, &objp->locker.locker4_u.open_owner.
   2707 			    lock_seqid))
   2708 				return (FALSE);
   2709 			if (!xdr_u_longlong_t(xdrs,
   2710 			    (u_longlong_t *)&objp->locker.locker4_u.
   2711 			    open_owner.lock_owner.clientid))
   2712 				return (FALSE);
   2713 			return (xdr_bytes(xdrs,
   2714 			    (char **)&objp->locker.locker4_u.open_owner.
   2715 			    lock_owner.owner_val,
   2716 			    (uint_t *)&objp->locker.locker4_u.open_owner.
   2717 			    lock_owner.owner_len,
   2718 			    NFS4_OPAQUE_LIMIT));
   2719 		}
   2720 
   2721 		if (objp->locker.new_lock_owner != FALSE)
   2722 			return (FALSE);
   2723 
   2724 		if (!xdr_u_int(xdrs, &objp->locker.locker4_u.lock_owner.
   2725 		    lock_stateid.seqid))
   2726 			return (FALSE);
   2727 		if (!xdr_opaque(xdrs, objp->locker.locker4_u.lock_owner.
   2728 		    lock_stateid.other, 12))
   2729 			return (FALSE);
   2730 		return (xdr_u_int(xdrs, &objp->locker.locker4_u.lock_owner.
   2731 		    lock_seqid));
   2732 	}
   2733 
   2734 	/*
   2735 	 * Optimized free case
   2736 	 */
   2737 	if (objp->locker.new_lock_owner == TRUE) {
   2738 		if (objp->locker.locker4_u.open_owner.lock_owner.owner_val !=
   2739 		    NULL) {
   2740 			kmem_free(objp->locker.locker4_u.open_owner.lock_owner.
   2741 			    owner_val,
   2742 			    objp->locker.locker4_u.open_owner.lock_owner.
   2743 			    owner_len);
   2744 		}
   2745 	}
   2746 
   2747 	return (TRUE);
   2748 }
   2749 
   2750 static bool_t
   2751 xdr_LOCK4res(XDR *xdrs, LOCK4res *objp)
   2752 {
   2753 	if (xdrs->x_op != XDR_FREE) {
   2754 		if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2755 			return (FALSE);
   2756 		if (objp->status == NFS4_OK) {
   2757 			if (!xdr_u_int(xdrs,
   2758 			    &objp->LOCK4res_u.lock_stateid.seqid))
   2759 				return (FALSE);
   2760 			return (xdr_opaque(xdrs,
   2761 			    objp->LOCK4res_u.lock_stateid.other, 12));
   2762 		}
   2763 		if (objp->status != NFS4ERR_DENIED)
   2764 			return (TRUE);
   2765 
   2766 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->LOCK4res_u.
   2767 		    denied.offset))
   2768 			return (FALSE);
   2769 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->LOCK4res_u.
   2770 		    denied.length))
   2771 			return (FALSE);
   2772 		if (!xdr_int(xdrs, (int *)&objp->LOCK4res_u.denied.locktype))
   2773 			return (FALSE);
   2774 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->LOCK4res_u.
   2775 		    denied.owner.clientid))
   2776 			return (FALSE);
   2777 		return (xdr_bytes(xdrs,
   2778 		    (char **)&objp->LOCK4res_u.denied.owner.owner_val,
   2779 		    (uint_t *)&objp->LOCK4res_u.denied.owner.owner_len,
   2780 		    NFS4_OPAQUE_LIMIT));
   2781 	}
   2782 
   2783 	/*
   2784 	 * Optimized free case
   2785 	 */
   2786 	if (objp->status == NFS4_OK || objp->status != NFS4ERR_DENIED)
   2787 		return (TRUE);
   2788 
   2789 	if (objp->LOCK4res_u.denied.owner.owner_val != NULL)
   2790 		kmem_free(objp->LOCK4res_u.denied.owner.owner_val,
   2791 		    objp->LOCK4res_u.denied.owner.owner_len);
   2792 	return (TRUE);
   2793 }
   2794 
   2795 static bool_t
   2796 xdr_LOCKT4args(XDR *xdrs, LOCKT4args *objp)
   2797 {
   2798 	if (xdrs->x_op != XDR_FREE) {
   2799 		if (!xdr_int(xdrs, (int *)&objp->locktype))
   2800 			return (FALSE);
   2801 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->offset))
   2802 			return (FALSE);
   2803 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->length))
   2804 			return (FALSE);
   2805 		if (!xdr_u_longlong_t(xdrs,
   2806 		    (u_longlong_t *)&objp->owner.clientid))
   2807 			return (FALSE);
   2808 		return (xdr_bytes(xdrs, (char **)&objp->owner.owner_val,
   2809 		    (uint_t *)&objp->owner.owner_len,
   2810 		    NFS4_OPAQUE_LIMIT));
   2811 	}
   2812 
   2813 	/*
   2814 	 * Optimized free case
   2815 	 */
   2816 	if (objp->owner.owner_val != NULL)
   2817 		kmem_free(objp->owner.owner_val, objp->owner.owner_len);
   2818 	return (TRUE);
   2819 }
   2820 
   2821 static bool_t
   2822 xdr_LOCKT4res(XDR *xdrs, LOCKT4res *objp)
   2823 {
   2824 	if (xdrs->x_op != XDR_FREE) {
   2825 		if (!xdr_int(xdrs, (int32_t *)&objp->status))
   2826 			return (FALSE);
   2827 		if (objp->status == NFS4_OK)
   2828 			return (TRUE);
   2829 		if (objp->status != NFS4ERR_DENIED)
   2830 			return (TRUE);
   2831 		/* xdr_LOCK4denied */
   2832 		if (!xdr_u_longlong_t(xdrs,
   2833 		    (u_longlong_t *)&objp->denied.offset))
   2834 			return (FALSE);
   2835 		if (!xdr_u_longlong_t(xdrs,
   2836 		    (u_longlong_t *)&objp->denied.length))
   2837 			return (FALSE);
   2838 		if (!xdr_int(xdrs, (int *)&objp->denied.locktype))
   2839 			return (FALSE);
   2840 		if (!xdr_u_longlong_t(xdrs,
   2841 		    (u_longlong_t *)&objp->denied.owner.clientid))
   2842 			return (FALSE);
   2843 		return (xdr_bytes(xdrs,
   2844 		    (char **)&objp->denied.owner.owner_val,
   2845 		    (uint_t *)&objp->denied.owner.owner_len,
   2846 		    NFS4_OPAQUE_LIMIT));
   2847 	}
   2848 
   2849 	/*
   2850 	 * Optimized free case
   2851 	 */
   2852 	if (objp->status == NFS4_OK || objp->status != NFS4ERR_DENIED)
   2853 		return (TRUE);
   2854 	if (objp->denied.owner.owner_val != NULL)
   2855 		kmem_free(objp->denied.owner.owner_val,
   2856 		    objp->denied.owner.owner_len);
   2857 	return (TRUE);
   2858 }
   2859 
   2860 static bool_t
   2861 xdr_LOCKU4args(XDR *xdrs, LOCKU4args *objp)
   2862 {
   2863 	if (!xdr_int(xdrs, (int *)&objp->locktype))
   2864 		return (FALSE);
   2865 	if (!xdr_u_int(xdrs, &objp->seqid))
   2866 		return (FALSE);
   2867 	if (!xdr_u_int(xdrs, &objp->lock_stateid.seqid))
   2868 		return (FALSE);
   2869 	if (!xdr_opaque(xdrs, objp->lock_stateid.other, 12))
   2870 		return (FALSE);
   2871 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->offset))
   2872 		return (FALSE);
   2873 	return (xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->length));
   2874 }
   2875 
   2876 static bool_t
   2877 xdr_OPEN4args(XDR *xdrs, OPEN4args *objp)
   2878 {
   2879 	if (xdrs->x_op != XDR_FREE) {
   2880 		if (!xdr_u_int(xdrs, &objp->seqid))
   2881 			return (FALSE);
   2882 		if (!xdr_u_int(xdrs, &objp->share_access))
   2883 			return (FALSE);
   2884 		if (!xdr_u_int(xdrs, &objp->share_deny))
   2885 			return (FALSE);
   2886 
   2887 		/* xdr_open_owner4 */
   2888 		if (!xdr_u_longlong_t(xdrs,
   2889 		    (u_longlong_t *)&objp->owner.clientid))
   2890 			return (FALSE);
   2891 		if (!xdr_bytes(xdrs, (char **)&objp->owner.owner_val,
   2892 		    (uint_t *)&objp->owner.owner_len,
   2893 		    NFS4_OPAQUE_LIMIT))
   2894 			return (FALSE);
   2895 
   2896 		/* xdr_openflag4 */
   2897 		if (!xdr_int(xdrs, (int *)&objp->opentype))
   2898 			return (FALSE);
   2899 		if (objp->opentype == OPEN4_CREATE) {
   2900 
   2901 			/* xdr_createhow4 */
   2902 			if (!xdr_int(xdrs, (int *)&objp->mode))
   2903 				return (FALSE);
   2904 			switch (objp->mode) {
   2905 			case UNCHECKED4:
   2906 			case GUARDED4:
   2907 				if (!xdr_fattr4(xdrs,
   2908 				    &objp->createhow4_u.createattrs))
   2909 					return (FALSE);
   2910 				break;
   2911 			case EXCLUSIVE4:
   2912 				if (!xdr_u_longlong_t(xdrs,
   2913 				    (u_longlong_t *)&objp->createhow4_u.
   2914 				    createverf))
   2915 					return (FALSE);
   2916 				break;
   2917 			default:
   2918 				return (FALSE);
   2919 			}
   2920 		}
   2921 
   2922 		/* xdr_open_claim4 */
   2923 		if (!xdr_int(xdrs, (int *)&objp->claim))
   2924 			return (FALSE);
   2925 
   2926 		switch (objp->claim) {
   2927 		case CLAIM_NULL:
   2928 			return (xdr_bytes(xdrs, (char **)&objp->open_claim4_u.
   2929 			    file.utf8string_val,
   2930 			    (uint_t *)&objp->open_claim4_u.file.
   2931 			    utf8string_len,
   2932 			    NFS4_MAX_UTF8STRING));
   2933 		case CLAIM_PREVIOUS:
   2934 			return (xdr_int(xdrs,
   2935 			    (int *)&objp->open_claim4_u.delegate_type));
   2936 		case CLAIM_DELEGATE_CUR:
   2937 			if (!xdr_u_int(xdrs, (uint_t *)&objp->open_claim4_u.
   2938 			    delegate_cur_info.delegate_stateid.seqid))
   2939 				return (FALSE);
   2940 			if (!xdr_opaque(xdrs, objp->open_claim4_u.
   2941 			    delegate_cur_info.delegate_stateid.other,
   2942 			    12))
   2943 				return (FALSE);
   2944 			return (xdr_bytes(xdrs, (char **)&objp->open_claim4_u.
   2945 			    delegate_cur_info.file.utf8string_val,
   2946 			    (uint_t *)&objp->open_claim4_u.
   2947 			    delegate_cur_info.file.utf8string_len,
   2948 			    NFS4_MAX_UTF8STRING));
   2949 		case CLAIM_DELEGATE_PREV:
   2950 			return (xdr_bytes(xdrs, (char **)&objp->open_claim4_u.
   2951 			    file_delegate_prev.utf8string_val,
   2952 			    (uint_t *)&objp->open_claim4_u.
   2953 			    file_delegate_prev.utf8string_len,
   2954 			    NFS4_MAX_UTF8STRING));
   2955 		default:
   2956 			return (FALSE);
   2957 		}
   2958 	}
   2959 
   2960 	/*
   2961 	 * Optimized free case
   2962 	 */
   2963 	if (objp->owner.owner_val != NULL)
   2964 		kmem_free(objp->owner.owner_val, objp->owner.owner_len);
   2965 
   2966 	if (objp->opentype == OPEN4_CREATE) {
   2967 		switch (objp->mode) {
   2968 		case UNCHECKED4:
   2969 		case GUARDED4:
   2970 			(void) xdr_fattr4(xdrs,
   2971 			    &objp->createhow4_u.createattrs);
   2972 			break;
   2973 		case EXCLUSIVE4:
   2974 		default:
   2975 			break;
   2976 		}
   2977 	}
   2978 
   2979 	switch (objp->claim) {
   2980 	case CLAIM_NULL:
   2981 		if (objp->open_claim4_u.file.utf8string_val != NULL)
   2982 			kmem_free(objp->open_claim4_u.file.utf8string_val,
   2983 			    objp->open_claim4_u.file.utf8string_len);
   2984 		return (TRUE);
   2985 	case CLAIM_PREVIOUS:
   2986 		return (TRUE);
   2987 	case CLAIM_DELEGATE_CUR:
   2988 		if (objp->open_claim4_u.delegate_cur_info.file.utf8string_val !=
   2989 		    NULL) {
   2990 			kmem_free(objp->open_claim4_u.delegate_cur_info.file.
   2991 			    utf8string_val,
   2992 			    objp->open_claim4_u.delegate_cur_info.file.
   2993 			    utf8string_len);
   2994 		}
   2995 		return (TRUE);
   2996 	case CLAIM_DELEGATE_PREV:
   2997 		if (objp->open_claim4_u.file_delegate_prev.utf8string_val !=
   2998 		    NULL) {
   2999 			kmem_free(objp->open_claim4_u.file_delegate_prev.
   3000 			    utf8string_val,
   3001 			    objp->open_claim4_u.file_delegate_prev.
   3002 			    utf8string_len);
   3003 		}
   3004 		return (TRUE);
   3005 	default:
   3006 		return (TRUE);
   3007 	}
   3008 }
   3009 
   3010 static bool_t
   3011 xdr_OPEN4cargs(XDR *xdrs, OPEN4cargs *objp)
   3012 {
   3013 	int op;
   3014 	int len;
   3015 	rpc_inline_t *ptr;
   3016 
   3017 	ASSERT(xdrs->x_op == XDR_ENCODE);
   3018 
   3019 	/*
   3020 	 * We must always define the client's open_owner to be
   3021 	 * 4 byte aligned and sized.
   3022 	 */
   3023 	ASSERT(objp->owner.owner_len <= NFS4_OPAQUE_LIMIT);
   3024 	ASSERT(!(objp->owner.owner_len % BYTES_PER_XDR_UNIT));
   3025 
   3026 	len = objp->owner.owner_len;
   3027 	if ((ptr = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT + len)) != NULL) {
   3028 		int i;
   3029 		int32_t *ip;
   3030 
   3031 		IXDR_PUT_U_INT32(ptr, OP_OPEN);
   3032 		IXDR_PUT_U_INT32(ptr, objp->seqid);
   3033 		IXDR_PUT_U_INT32(ptr, objp->share_access);
   3034 		IXDR_PUT_U_INT32(ptr, objp->share_deny);
   3035 
   3036 		/* xdr_open_owner4 */
   3037 		IXDR_PUT_HYPER(ptr, objp->owner.clientid);
   3038 		IXDR_PUT_U_INT32(ptr, objp->owner.owner_len);
   3039 		/* We know this is very short so don't bcopy */
   3040 		ip = (int32_t *)objp->owner.owner_val;
   3041 		len /= BYTES_PER_XDR_UNIT;
   3042 		for (i = 0; i < len; i++)
   3043 			*ptr++ = *ip++;
   3044 
   3045 		/* xdr_openflag4 */
   3046 		IXDR_PUT_U_INT32(ptr, objp->opentype);
   3047 	} else {
   3048 		op = OP_OPEN;
   3049 		if (!XDR_PUTINT32(xdrs, (int32_t *)&op))
   3050 			return (FALSE);
   3051 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->seqid))
   3052 			return (FALSE);
   3053 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->share_access))
   3054 			return (FALSE);
   3055 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->share_deny))
   3056 			return (FALSE);
   3057 
   3058 		/* xdr_open_owner4 */
   3059 		if (!xdr_u_longlong_t(xdrs,
   3060 		    (u_longlong_t *)&objp->owner.clientid))
   3061 			return (FALSE);
   3062 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->owner.owner_len))
   3063 			return (FALSE);
   3064 		if (!xdr_opaque(xdrs, objp->owner.owner_val,
   3065 		    objp->owner.owner_len))
   3066 			return (FALSE);
   3067 
   3068 		/* xdr_openflag4 */
   3069 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->opentype))
   3070 			return (FALSE);
   3071 	}
   3072 
   3073 	if (objp->opentype == OPEN4_CREATE) {
   3074 		/* xdr_createhow4 */
   3075 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->mode))
   3076 			return (FALSE);
   3077 		switch (objp->mode) {
   3078 		case UNCHECKED4:
   3079 		case GUARDED4:
   3080 			if (!xdr_fattr4(xdrs,
   3081 			    &objp->createhow4_u.createattrs))
   3082 				return (FALSE);
   3083 			break;
   3084 		case EXCLUSIVE4:
   3085 			if (!xdr_u_longlong_t(xdrs,
   3086 			    (u_longlong_t *)&objp->createhow4_u.
   3087 			    createverf))
   3088 				return (FALSE);
   3089 			break;
   3090 		default:
   3091 			return (FALSE);
   3092 		}
   3093 	}
   3094 
   3095 	/* xdr_open_claim4 */
   3096 	if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->claim))
   3097 		return (FALSE);
   3098 
   3099 	switch (objp->claim) {
   3100 	case CLAIM_NULL:
   3101 		len = strlen(objp->open_claim4_u.cfile);
   3102 		if (len > NFS4_MAX_UTF8STRING)
   3103 			return (FALSE);
   3104 		if (XDR_PUTINT32(xdrs, &len)) {
   3105 			return (xdr_opaque(xdrs,
   3106 			    objp->open_claim4_u.cfile, len));
   3107 		}
   3108 		return (FALSE);
   3109 	case CLAIM_PREVIOUS:
   3110 		return (XDR_PUTINT32(xdrs,
   3111 		    (int32_t *)&objp->open_claim4_u.delegate_type));
   3112 	case CLAIM_DELEGATE_CUR:
   3113 		if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->open_claim4_u.
   3114 		    delegate_cur_info.delegate_stateid.seqid))
   3115 			return (FALSE);
   3116 		if (!xdr_opaque(xdrs, objp->open_claim4_u.
   3117 		    delegate_cur_info.delegate_stateid.other,
   3118 		    12))
   3119 			return (FALSE);
   3120 		len = strlen(objp->open_claim4_u.delegate_cur_info.cfile);
   3121 		if (len > NFS4_MAX_UTF8STRING)
   3122 			return (FALSE);
   3123 		if (XDR_PUTINT32(xdrs, &len)) {
   3124 			return (xdr_opaque(xdrs,
   3125 			    objp->open_claim4_u.delegate_cur_info.cfile,
   3126 			    len));
   3127 		}
   3128 		return (FALSE);
   3129 	case CLAIM_DELEGATE_PREV:
   3130 		len = strlen(objp->open_claim4_u.cfile_delegate_prev);
   3131 		if (len > NFS4_MAX_UTF8STRING)
   3132 			return (FALSE);
   3133 		if (XDR_PUTINT32(xdrs, &len)) {
   3134 			return (xdr_opaque(xdrs,
   3135 			    objp->open_claim4_u.cfile_delegate_prev, len));
   3136 		}
   3137 		return (FALSE);
   3138 	default:
   3139 		return (FALSE);
   3140 	}
   3141 }
   3142 
   3143 static bool_t
   3144 xdr_OPEN4res(XDR *xdrs, OPEN4res *objp)
   3145 {
   3146 	if (xdrs->x_op != XDR_FREE) {
   3147 		if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3148 			return (FALSE);
   3149 		if (objp->status != NFS4_OK)
   3150 			return (TRUE);
   3151 		if (!xdr_u_int(xdrs, &objp->stateid.seqid))
   3152 			return (FALSE);
   3153 		if (!xdr_opaque(xdrs, objp->stateid.other, 12))
   3154 			return (FALSE);
   3155 		if (!xdr_bool(xdrs, &objp->cinfo.atomic))
   3156 			return (FALSE);
   3157 		if (!xdr_u_longlong_t(xdrs,
   3158 		    (u_longlong_t *)&objp->cinfo.before))
   3159 			return (FALSE);
   3160 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cinfo.after))
   3161 			return (FALSE);
   3162 		if (!xdr_u_int(xdrs, &objp->rflags))
   3163 			return (FALSE);
   3164 		if (!xdr_bitmap4(xdrs, &objp->attrset))
   3165 			return (FALSE);
   3166 		if (!xdr_int(xdrs,
   3167 		    (int *)&objp->delegation.delegation_type))
   3168 			return (FALSE);
   3169 		switch (objp->delegation.delegation_type) {
   3170 		case OPEN_DELEGATE_NONE:
   3171 			return (TRUE);
   3172 		case OPEN_DELEGATE_READ:
   3173 			if (!xdr_u_int(xdrs, &objp->delegation.
   3174 			    open_delegation4_u.read.stateid.seqid))
   3175 				return (FALSE);
   3176 			if (!xdr_opaque(xdrs, objp->delegation.
   3177 			    open_delegation4_u.read.stateid.other,
   3178 			    12))
   3179 				return (FALSE);
   3180 			if (!xdr_bool(xdrs, &objp->delegation.
   3181 			    open_delegation4_u.read.recall))
   3182 				return (FALSE);
   3183 			return (xdr_nfsace4(xdrs, &objp->delegation.
   3184 			    open_delegation4_u.read.permissions));
   3185 		case OPEN_DELEGATE_WRITE:
   3186 			if (!xdr_u_int(xdrs, &objp->delegation.
   3187 			    open_delegation4_u.write.stateid.seqid))
   3188 				return (FALSE);
   3189 			if (!xdr_opaque(xdrs, objp->delegation.
   3190 			    open_delegation4_u.write.stateid.other,
   3191 			    12))
   3192 				return (FALSE);
   3193 			if (!xdr_bool(xdrs, &objp->delegation.
   3194 			    open_delegation4_u.write.recall))
   3195 				return (FALSE);
   3196 			if (!xdr_int(xdrs, (int *)&objp->delegation.
   3197 			    open_delegation4_u.write.space_limit.
   3198 			    limitby))
   3199 				return (FALSE);
   3200 			switch (objp->delegation.
   3201 			    open_delegation4_u.write.space_limit.
   3202 			    limitby) {
   3203 			case NFS_LIMIT_SIZE:
   3204 				if (!xdr_u_longlong_t(xdrs,
   3205 				    (u_longlong_t *)&objp->delegation.
   3206 				    open_delegation4_u.write.space_limit.
   3207 				    nfs_space_limit4_u.filesize))
   3208 					return (FALSE);
   3209 				break;
   3210 			case NFS_LIMIT_BLOCKS:
   3211 				if (!xdr_u_int(xdrs,
   3212 				    &objp->delegation.open_delegation4_u.write.
   3213 				    space_limit.nfs_space_limit4_u.
   3214 				    mod_blocks.num_blocks))
   3215 					return (FALSE);
   3216 				if (!xdr_u_int(xdrs, &objp->delegation.
   3217 				    open_delegation4_u.write.space_limit.
   3218 				    nfs_space_limit4_u.mod_blocks.
   3219 				    bytes_per_block))
   3220 					return (FALSE);
   3221 				break;
   3222 			default:
   3223 				return (FALSE);
   3224 			}
   3225 			return (xdr_nfsace4(xdrs, &objp->delegation.
   3226 			    open_delegation4_u.write.permissions));
   3227 		}
   3228 		return (FALSE);
   3229 	}
   3230 
   3231 	/*
   3232 	 * Optimized free case
   3233 	 */
   3234 	if (objp->status != NFS4_OK)
   3235 		return (TRUE);
   3236 
   3237 	switch (objp->delegation.delegation_type) {
   3238 	case OPEN_DELEGATE_NONE:
   3239 		return (TRUE);
   3240 	case OPEN_DELEGATE_READ:
   3241 		return (xdr_nfsace4(xdrs, &objp->delegation.
   3242 		    open_delegation4_u.read.permissions));
   3243 	case OPEN_DELEGATE_WRITE:
   3244 		switch (objp->delegation.
   3245 		    open_delegation4_u.write.space_limit.limitby) {
   3246 		case NFS_LIMIT_SIZE:
   3247 		case NFS_LIMIT_BLOCKS:
   3248 			break;
   3249 		default:
   3250 			return (FALSE);
   3251 		}
   3252 		return (xdr_nfsace4(xdrs, &objp->delegation.
   3253 		    open_delegation4_u.write.permissions));
   3254 	}
   3255 	return (FALSE);
   3256 }
   3257 
   3258 static bool_t
   3259 xdr_OPEN_CONFIRM4res(XDR *xdrs, OPEN_CONFIRM4res *objp)
   3260 {
   3261 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3262 		return (FALSE);
   3263 	if (objp->status != NFS4_OK)
   3264 		return (TRUE);
   3265 	if (!xdr_u_int(xdrs, &objp->open_stateid.seqid))
   3266 		return (FALSE);
   3267 	return (xdr_opaque(xdrs, objp->open_stateid.other, 12));
   3268 }
   3269 
   3270 static bool_t
   3271 xdr_OPEN_DOWNGRADE4args(XDR *xdrs, OPEN_DOWNGRADE4args *objp)
   3272 {
   3273 	if (!xdr_u_int(xdrs, &objp->open_stateid.seqid))
   3274 		return (FALSE);
   3275 	if (!xdr_opaque(xdrs, objp->open_stateid.other, 12))
   3276 		return (FALSE);
   3277 	if (!xdr_u_int(xdrs, &objp->seqid))
   3278 		return (FALSE);
   3279 	if (!xdr_u_int(xdrs, &objp->share_access))
   3280 		return (FALSE);
   3281 	return (xdr_u_int(xdrs, &objp->share_deny));
   3282 }
   3283 
   3284 static bool_t
   3285 xdr_OPEN_DOWNGRADE4res(XDR *xdrs, OPEN_DOWNGRADE4res *objp)
   3286 {
   3287 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3288 		return (FALSE);
   3289 	if (objp->status != NFS4_OK)
   3290 		return (TRUE);
   3291 	if (!xdr_u_int(xdrs, &objp->open_stateid.seqid))
   3292 		return (FALSE);
   3293 	return (xdr_opaque(xdrs, objp->open_stateid.other, 12));
   3294 }
   3295 
   3296 static bool_t
   3297 xdr_READ4args(XDR *xdrs, READ4args *objp)
   3298 {
   3299 	rdma_chunkinfo_t rci;
   3300 	rdma_wlist_conn_info_t rwci;
   3301 	struct xdr_ops *xops = xdrrdma_xops();
   3302 
   3303 	if (!xdr_u_int(xdrs, &objp->stateid.seqid))
   3304 		return (FALSE);
   3305 	if (!xdr_opaque(xdrs, objp->stateid.other, 12))
   3306 		return (FALSE);
   3307 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->offset))
   3308 		return (FALSE);
   3309 	if (!xdr_u_int(xdrs, &objp->count))
   3310 		return (FALSE);
   3311 
   3312 	DTRACE_PROBE1(xdr__i__read4args_buf_len,
   3313 	    int, objp->count);
   3314 
   3315 	objp->wlist = NULL;
   3316 
   3317 	if (xdrs->x_ops == xops && xdrs->x_op == XDR_ENCODE) {
   3318 		rci.rci_type = RCI_WRITE_ADDR_CHUNK;
   3319 		rci.rci_len = objp->count;
   3320 		(void) XDR_CONTROL(xdrs, XDR_RDMA_ADD_CHUNK, &rci);
   3321 	}
   3322 
   3323 	if (xdrs->x_ops != &xdrrdma_ops || xdrs->x_op == XDR_FREE)
   3324 		return (TRUE);
   3325 
   3326 	if (xdrs->x_op == XDR_ENCODE) {
   3327 		if (objp->res_uiop != NULL) {
   3328 			rci.rci_type = RCI_WRITE_UIO_CHUNK;
   3329 			rci.rci_a.rci_uiop = objp->res_uiop;
   3330 			rci.rci_len = objp->count;
   3331 			rci.rci_clpp = &objp->wlist;
   3332 		} else {
   3333 			rci.rci_type = RCI_WRITE_ADDR_CHUNK;
   3334 			rci.rci_a.rci_addr = objp->res_data_val_alt;
   3335 			rci.rci_len = objp->count;
   3336 			rci.rci_clpp = &objp->wlist;
   3337 		}
   3338 
   3339 		return (XDR_CONTROL(xdrs, XDR_RDMA_ADD_CHUNK, &rci));
   3340 	}
   3341 
   3342 	/* XDR_DECODE case */
   3343 	(void) XDR_CONTROL(xdrs, XDR_RDMA_GET_WCINFO, &rwci);
   3344 	objp->wlist = rwci.rwci_wlist;
   3345 	objp->conn = rwci.rwci_conn;
   3346 
   3347 	return (TRUE);
   3348 }
   3349 
   3350 static bool_t
   3351 xdr_READ4res(XDR *xdrs, READ4res *objp)
   3352 {
   3353 	mblk_t *mp;
   3354 
   3355 	if (xdrs->x_op == XDR_DECODE)
   3356 		return (FALSE);
   3357 
   3358 	if (xdrs->x_op == XDR_FREE) {
   3359 		/*
   3360 		 * Optimized free case
   3361 		 */
   3362 		if (objp->status != NFS4_OK)
   3363 			return (TRUE);
   3364 		if (objp->data_val != NULL)
   3365 			kmem_free(objp->data_val, objp->data_len);
   3366 		return (TRUE);
   3367 	}
   3368 
   3369 	/* on with ENCODE paths */
   3370 	if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->status))
   3371 		return (FALSE);
   3372 	if (objp->status != NFS4_OK)
   3373 		return (TRUE);
   3374 
   3375 	if (!XDR_PUTINT32(xdrs, &objp->eof))
   3376 		return (FALSE);
   3377 
   3378 	mp = objp->mblk;
   3379 	if (mp != NULL && xdrs->x_ops == &xdrmblk_ops) {
   3380 		if (xdrmblk_putmblk(xdrs, mp, objp->data_len) == TRUE) {
   3381 			objp->mblk = NULL;
   3382 			return (TRUE);
   3383 		}
   3384 	} else if (mp == NULL) {
   3385 		if (xdr_u_int(xdrs, &objp->data_len) == FALSE) {
   3386 			return (FALSE);
   3387 		}
   3388 		/*
   3389 		 * If read data sent by wlist (RDMA_WRITE), don't do
   3390 		 * xdr_bytes() below.   RDMA_WRITE transfers the data.
   3391 		 * Note: this is encode-only because the client code
   3392 		 * uses xdr_READ4res_clnt to decode results.
   3393 		 */
   3394 		if (objp->wlist) {
   3395 			if (objp->data_len != 0) {
   3396 				return (xdrrdma_send_read_data(
   3397 				    xdrs, objp->data_len, objp->wlist));
   3398 			}
   3399 			return (TRUE);
   3400 		}
   3401 	}
   3402 
   3403 	return (xdr_bytes(xdrs, (char **)&objp->data_val,
   3404 	    (uint_t *)&objp->data_len,
   3405 	    objp->data_len));
   3406 }
   3407 
   3408 static bool_t
   3409 xdr_READ4res_clnt(XDR *xdrs, READ4res *objp, READ4args *aobjp)
   3410 {
   3411 	mblk_t *mp;
   3412 	size_t n;
   3413 	int error;
   3414 	uint_t size = aobjp->res_maxsize;
   3415 	count4 ocount;
   3416 
   3417 	if (xdrs->x_op == XDR_ENCODE)
   3418 		return (FALSE);
   3419 
   3420 	if (xdrs->x_op == XDR_FREE) {
   3421 		/*
   3422 		 * Optimized free case
   3423 		 */
   3424 		if (objp->status != NFS4_OK)
   3425 			return (TRUE);
   3426 		if (objp->data_val != NULL)
   3427 			kmem_free(objp->data_val, objp->data_len);
   3428 		return (TRUE);
   3429 	}
   3430 
   3431 	if (!XDR_GETINT32(xdrs, (int32_t *)&objp->status))
   3432 		return (FALSE);
   3433 	if (objp->status != NFS4_OK)
   3434 		return (TRUE);
   3435 
   3436 	if (!XDR_GETINT32(xdrs, &objp->eof))
   3437 		return (FALSE);
   3438 
   3439 
   3440 	/*
   3441 	 * This is a special case such that the caller is providing a
   3442 	 * uio as a guide to eventual data location; this is used for
   3443 	 * handling DIRECTIO reads.
   3444 	 */
   3445 	if (aobjp->res_uiop != NULL) {
   3446 		struct uio *uiop = aobjp->res_uiop;
   3447 		int32_t *ptr;
   3448 
   3449 		if (xdrs->x_ops == &xdrmblk_ops) {
   3450 			if (!xdrmblk_getmblk(xdrs, &mp, &objp->data_len))
   3451 				return (FALSE);
   3452 
   3453 			if (objp->data_len == 0)
   3454 				return (TRUE);
   3455 
   3456 			if (objp->data_len > size)
   3457 				return (FALSE);
   3458 
   3459 			size = objp->data_len;
   3460 			do {
   3461 				n = MIN(size, mp->b_wptr - mp->b_rptr);
   3462 				if ((n = MIN(uiop->uio_resid, n)) != 0) {
   3463 
   3464 					error =	uiomove((char *)mp->b_rptr, n,
   3465 					    UIO_READ, uiop);
   3466 					if (error)
   3467 						return (FALSE);
   3468 					mp->b_rptr += n;
   3469 					size -= n;
   3470 				}
   3471 
   3472 				while (mp && (mp->b_rptr >= mp->b_wptr))
   3473 					mp = mp->b_cont;
   3474 			} while (mp && size > 0 && uiop->uio_resid > 0);
   3475 
   3476 			return (TRUE);
   3477 		}
   3478 
   3479 		if (xdrs->x_ops == &xdrrdma_ops) {
   3480 			struct clist *cl;
   3481 
   3482 			XDR_CONTROL(xdrs, XDR_RDMA_GET_WLIST, &cl);
   3483 
   3484 			objp->wlist = cl;
   3485 
   3486 			if (objp->wlist) {
   3487 				/* opaque count */
   3488 				if (!xdr_u_int(xdrs, &ocount)) {
   3489 					objp->wlist = NULL;
   3490 					return (FALSE);
   3491 				}
   3492 
   3493 				objp->wlist_len = clist_len(cl);
   3494 				objp->data_len = ocount;
   3495 
   3496 				if (objp->wlist_len !=
   3497 				    roundup(
   3498 				    objp->data_len, BYTES_PER_XDR_UNIT)) {
   3499 					DTRACE_PROBE2(
   3500 					    xdr__e__read4resuio_clnt_fail,
   3501 					    int, ocount,
   3502 					    int, objp->data_len);
   3503 					objp->wlist = NULL;
   3504 					return (FALSE);
   3505 				}
   3506 
   3507 				uiop->uio_resid -= objp->data_len;
   3508 				uiop->uio_iov->iov_len -= objp->data_len;
   3509 				uiop->uio_iov->iov_base += objp->data_len;
   3510 				uiop->uio_loffset += objp->data_len;
   3511 
   3512 				objp->wlist = NULL;
   3513 				return (TRUE);
   3514 			}
   3515 		}
   3516 
   3517 		/*
   3518 		 * This isn't an xdrmblk stream nor RDMA.
   3519 		 * Handle the likely case that it can be
   3520 		 * inlined (ex. xdrmem).
   3521 		 */
   3522 		if (!XDR_GETINT32(xdrs, (int32_t *)&objp->data_len))
   3523 			return (FALSE);
   3524 
   3525 		if (objp->data_len == 0)
   3526 			return (TRUE);
   3527 
   3528 		if (objp->data_len > size)
   3529 			return (FALSE);
   3530 
   3531 		size = (int)objp->data_len;
   3532 		if ((ptr = XDR_INLINE(xdrs, size)) != NULL)
   3533 			return (uiomove(ptr, size, UIO_READ, uiop) ?
   3534 			    FALSE : TRUE);
   3535 
   3536 		/*
   3537 		 * Handle some other (unlikely) stream type that will
   3538 		 * need a copy.
   3539 		 */
   3540 		if ((ptr = kmem_alloc(size, KM_NOSLEEP)) == NULL)
   3541 			return (FALSE);
   3542 
   3543 		if (!XDR_GETBYTES(xdrs, (caddr_t)ptr, size)) {
   3544 			kmem_free(ptr, size);
   3545 			return (FALSE);
   3546 		}
   3547 		error = uiomove(ptr, size, UIO_READ, uiop);
   3548 		kmem_free(ptr, size);
   3549 
   3550 		return (error ? FALSE : TRUE);
   3551 	}
   3552 
   3553 	/*
   3554 	 * Check for the other special case of the caller providing
   3555 	 * the target area for the data.
   3556 	 */
   3557 	if (aobjp->res_data_val_alt == NULL)
   3558 		return (FALSE);
   3559 
   3560 	/*
   3561 	 * If read data received via RDMA_WRITE, don't do xdr_bytes().
   3562 	 * RDMA_WRITE already moved the data so decode length of
   3563 	 * RDMA_WRITE.
   3564 	 */
   3565 	if (xdrs->x_ops == &xdrrdma_ops) {
   3566 		struct clist *cl;
   3567 
   3568 		XDR_CONTROL(xdrs, XDR_RDMA_GET_WLIST, &cl);
   3569 
   3570 		objp->wlist = cl;
   3571 
   3572 		/*
   3573 		 * Data transferred through inline if
   3574 		 * objp->wlist == NULL
   3575 		 */
   3576 		if (objp->wlist) {
   3577 			/* opaque count */
   3578 			if (!xdr_u_int(xdrs, &ocount)) {
   3579 				objp->wlist = NULL;
   3580 				return (FALSE);
   3581 			}
   3582 
   3583 			objp->wlist_len = clist_len(cl);
   3584 			objp->data_len = ocount;
   3585 
   3586 			if (objp->wlist_len !=
   3587 			    roundup(
   3588 			    objp->data_len, BYTES_PER_XDR_UNIT)) {
   3589 				DTRACE_PROBE2(
   3590 				    xdr__e__read4res_clnt_fail,
   3591 				    int, ocount,
   3592 				    int, objp->data_len);
   3593 				objp->wlist = NULL;
   3594 				return (FALSE);
   3595 			}
   3596 
   3597 			objp->wlist = NULL;
   3598 			return (TRUE);
   3599 		}
   3600 	}
   3601 
   3602 	return (xdr_bytes(xdrs, (char **)&aobjp->res_data_val_alt,
   3603 	    (uint_t *)&objp->data_len,
   3604 	    aobjp->res_maxsize));
   3605 }
   3606 
   3607 static bool_t
   3608 xdr_READDIR4args(XDR *xdrs, READDIR4args *objp)
   3609 {
   3610 	rdma_chunkinfo_t rci;
   3611 	struct xdr_ops *xops = xdrrdma_xops();
   3612 
   3613 	if ((xdrs->x_ops == &xdrrdma_ops || xdrs->x_ops == xops) &&
   3614 	    xdrs->x_op == XDR_ENCODE) {
   3615 		rci.rci_type = RCI_REPLY_CHUNK;
   3616 		rci.rci_len = objp->maxcount;
   3617 		XDR_CONTROL(xdrs, XDR_RDMA_ADD_CHUNK, &rci);
   3618 	}
   3619 
   3620 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cookie))
   3621 		return (FALSE);
   3622 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cookieverf))
   3623 		return (FALSE);
   3624 	if (!xdr_u_int(xdrs, &objp->dircount))
   3625 		return (FALSE);
   3626 	if (!xdr_u_int(xdrs, &objp->maxcount))
   3627 		return (FALSE);
   3628 	return (xdr_bitmap4(xdrs, &objp->attr_request));
   3629 }
   3630 
   3631 /* ARGSUSED */
   3632 static bool_t
   3633 xdrmblk_putmblk_rd(XDR *xdrs, mblk_t *m)
   3634 {
   3635 	if (((m->b_wptr - m->b_rptr) % BYTES_PER_XDR_UNIT) != 0)
   3636 		return (FALSE);
   3637 
   3638 	/* LINTED pointer alignment */
   3639 	((mblk_t *)xdrs->x_base)->b_cont = m;
   3640 	xdrs->x_base = (caddr_t)m;
   3641 	xdrs->x_handy = 0;
   3642 	return (TRUE);
   3643 }
   3644 
   3645 bool_t
   3646 xdr_READDIR4res(XDR *xdrs, READDIR4res *objp)
   3647 {
   3648 	mblk_t *mp = objp->mblk;
   3649 	bool_t ret_val;
   3650 	uint_t flags = 0;
   3651 
   3652 	ASSERT(xdrs->x_op == XDR_ENCODE);
   3653 
   3654 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3655 		return (FALSE);
   3656 	if (objp->status != NFS4_OK)
   3657 		return (TRUE);
   3658 	if (mp == NULL)
   3659 		return (FALSE);
   3660 
   3661 	if (xdrs->x_ops == &xdrmblk_ops) {
   3662 		if (xdrmblk_putmblk_rd(xdrs, mp)
   3663 		    == TRUE) {
   3664 			/* mblk successfully inserted into outgoing chain */
   3665 			objp->mblk = NULL;
   3666 			return (TRUE);
   3667 		}
   3668 	}
   3669 
   3670 	ASSERT(mp->b_cont == NULL);
   3671 
   3672 	/*
   3673 	 * If transport is RDMA, the pre-encoded m_blk needs to be moved
   3674 	 * without being chunked.
   3675 	 * Check if chunking is enabled for the xdr stream.
   3676 	 * If it is enabled, disable it temporarily for this op,
   3677 	 * then re-enable.
   3678 	 */
   3679 	XDR_CONTROL(xdrs, XDR_RDMA_GET_FLAGS, &flags);
   3680 
   3681 	if (!(flags & XDR_RDMA_CHUNK))
   3682 		return (xdr_opaque(xdrs, (char *)mp->b_rptr, objp->data_len));
   3683 
   3684 	flags &= ~XDR_RDMA_CHUNK;
   3685 
   3686 	(void) XDR_CONTROL(xdrs, XDR_RDMA_SET_FLAGS, &flags);
   3687 
   3688 	ret_val = xdr_opaque(xdrs, (char *)mp->b_rptr, objp->data_len);
   3689 
   3690 	flags |= XDR_RDMA_CHUNK;
   3691 
   3692 	(void) XDR_CONTROL(xdrs, XDR_RDMA_SET_FLAGS, &flags);
   3693 
   3694 	return (ret_val);
   3695 }
   3696 
   3697 static bool_t
   3698 xdr_READLINK4res(XDR *xdrs, READLINK4res *objp)
   3699 {
   3700 	if (xdrs->x_op != XDR_FREE) {
   3701 		if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3702 			return (FALSE);
   3703 		if (objp->status != NFS4_OK)
   3704 			return (TRUE);
   3705 		return (xdr_bytes(xdrs, (char **)&objp->link.utf8string_val,
   3706 		    (uint_t *)&objp->link.utf8string_len,
   3707 		    NFS4_MAX_UTF8STRING));
   3708 	}
   3709 
   3710 	/*
   3711 	 * Optimized free case
   3712 	 */
   3713 	if (objp->status != NFS4_OK)
   3714 		return (TRUE);
   3715 	if (objp->link.utf8string_val != NULL)
   3716 		kmem_free(objp->link.utf8string_val, objp->link.utf8string_len);
   3717 	return (TRUE);
   3718 }
   3719 
   3720 static bool_t
   3721 xdr_REMOVE4res(XDR *xdrs, REMOVE4res *objp)
   3722 {
   3723 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3724 		return (FALSE);
   3725 	if (objp->status != NFS4_OK)
   3726 		return (TRUE);
   3727 	if (!xdr_bool(xdrs, &objp->cinfo.atomic))
   3728 		return (FALSE);
   3729 	if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->cinfo.before))
   3730 		return (FALSE);
   3731 	return (xdr_u_longlong_t(xdrs,
   3732 	    (u_longlong_t *)&objp->cinfo.after));
   3733 }
   3734 
   3735 static bool_t
   3736 xdr_RENAME4res(XDR *xdrs, RENAME4res *objp)
   3737 {
   3738 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3739 		return (FALSE);
   3740 	if (objp->status != NFS4_OK)
   3741 		return (TRUE);
   3742 	if (!xdr_bool(xdrs, &objp->source_cinfo.atomic))
   3743 		return (FALSE);
   3744 	if (!xdr_u_longlong_t(xdrs,
   3745 	    (u_longlong_t *)&objp->source_cinfo.before))
   3746 		return (FALSE);
   3747 	if (!xdr_u_longlong_t(xdrs,
   3748 	    (u_longlong_t *)&objp->source_cinfo.after))
   3749 		return (FALSE);
   3750 	if (!xdr_bool(xdrs, &objp->target_cinfo.atomic))
   3751 		return (FALSE);
   3752 	if (!xdr_u_longlong_t(xdrs,
   3753 	    (u_longlong_t *)&objp->target_cinfo.before))
   3754 		return (FALSE);
   3755 	return (xdr_u_longlong_t(xdrs,
   3756 	    (u_longlong_t *)&objp->target_cinfo.after));
   3757 }
   3758 
   3759 static bool_t
   3760 xdr_secinfo4(XDR *xdrs, secinfo4 *objp)
   3761 {
   3762 	if (xdrs->x_op != XDR_FREE) {
   3763 		if (!xdr_u_int(xdrs, &objp->flavor))
   3764 			return (FALSE);
   3765 		if (objp->flavor != RPCSEC_GSS)
   3766 			return (TRUE);
   3767 		if (!xdr_bytes(xdrs,
   3768 		    (char **)&objp->flavor_info.oid.sec_oid4_val,
   3769 		    (uint_t *)&objp->flavor_info.oid.sec_oid4_len,
   3770 		    NFS4_MAX_SECOID4))
   3771 			return (FALSE);
   3772 		if (!xdr_u_int(xdrs, &objp->flavor_info.qop))
   3773 			return (FALSE);
   3774 		return (xdr_int(xdrs, (int *)&objp->flavor_info.service));
   3775 	}
   3776 
   3777 	/*
   3778 	 * Optimized free path
   3779 	 */
   3780 	if (objp->flavor != RPCSEC_GSS)
   3781 		return (TRUE);
   3782 
   3783 	if (objp->flavor_info.oid.sec_oid4_val != NULL)
   3784 		kmem_free(objp->flavor_info.oid.sec_oid4_val,
   3785 		    objp->flavor_info.oid.sec_oid4_len);
   3786 	return (TRUE);
   3787 }
   3788 
   3789 static bool_t
   3790 xdr_SETCLIENTID4args(XDR *xdrs, SETCLIENTID4args *objp)
   3791 {
   3792 	if (xdrs->x_op != XDR_FREE) {
   3793 		if (!xdr_u_longlong_t(xdrs,
   3794 		    (u_longlong_t *)&objp->client.verifier))
   3795 			return (FALSE);
   3796 		if (!xdr_bytes(xdrs, (char **)&objp->client.id_val,
   3797 		    (uint_t *)&objp->client.id_len, NFS4_OPAQUE_LIMIT))
   3798 			return (FALSE);
   3799 		if (!xdr_u_int(xdrs, &objp->callback.cb_program))
   3800 			return (FALSE);
   3801 		if (!xdr_string(xdrs, &objp->callback.cb_location.r_netid,
   3802 		    NFS4_OPAQUE_LIMIT))
   3803 			return (FALSE);
   3804 		if (!xdr_string(xdrs, &objp->callback.cb_location.r_addr,
   3805 		    NFS4_OPAQUE_LIMIT))
   3806 			return (FALSE);
   3807 		return (xdr_u_int(xdrs, &objp->callback_ident));
   3808 	}
   3809 
   3810 	/*
   3811 	 * Optimized free case
   3812 	 */
   3813 	if (objp->client.id_val != NULL)
   3814 		kmem_free(objp->client.id_val, objp->client.id_len);
   3815 	(void) xdr_string(xdrs, &objp->callback.cb_location.r_netid,
   3816 	    NFS4_OPAQUE_LIMIT);
   3817 	return (xdr_string(xdrs, &objp->callback.cb_location.r_addr,
   3818 	    NFS4_OPAQUE_LIMIT));
   3819 }
   3820 
   3821 static bool_t
   3822 xdr_SETCLIENTID4res(XDR *xdrs, SETCLIENTID4res *objp)
   3823 {
   3824 	if (xdrs->x_op != XDR_FREE) {
   3825 		if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3826 			return (FALSE);
   3827 		switch (objp->status) {
   3828 		case NFS4_OK:
   3829 			if (!xdr_u_longlong_t(xdrs,
   3830 			    (u_longlong_t *)&objp->SETCLIENTID4res_u.resok4.
   3831 			    clientid))
   3832 				return (FALSE);
   3833 			return (xdr_u_longlong_t(xdrs,
   3834 			    (u_longlong_t *)&objp->SETCLIENTID4res_u.
   3835 			    resok4.setclientid_confirm));
   3836 		case NFS4ERR_CLID_INUSE:
   3837 			if (!xdr_string(xdrs,
   3838 			    &objp->SETCLIENTID4res_u.client_using.
   3839 			    r_netid, NFS4_OPAQUE_LIMIT))
   3840 				return (FALSE);
   3841 			return (xdr_string(xdrs,
   3842 			    &objp->SETCLIENTID4res_u.client_using.
   3843 			    r_addr, NFS4_OPAQUE_LIMIT));
   3844 		}
   3845 		return (TRUE);
   3846 	}
   3847 
   3848 	/*
   3849 	 * Optimized free case
   3850 	 */
   3851 	if (objp->status != NFS4ERR_CLID_INUSE)
   3852 		return (TRUE);
   3853 
   3854 	if (!xdr_string(xdrs, &objp->SETCLIENTID4res_u.client_using.r_netid,
   3855 	    NFS4_OPAQUE_LIMIT))
   3856 		return (FALSE);
   3857 	return (xdr_string(xdrs, &objp->SETCLIENTID4res_u.client_using.r_addr,
   3858 	    NFS4_OPAQUE_LIMIT));
   3859 }
   3860 
   3861 static bool_t
   3862 xdr_WRITE4args(XDR *xdrs, WRITE4args *objp)
   3863 {
   3864 	if (xdrs->x_op != XDR_FREE) {
   3865 		if (!xdr_u_int(xdrs, &objp->stateid.seqid))
   3866 			return (FALSE);
   3867 		if (!xdr_opaque(xdrs, objp->stateid.other, 12))
   3868 			return (FALSE);
   3869 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->offset))
   3870 			return (FALSE);
   3871 		if (!xdr_int(xdrs, (int *)&objp->stable))
   3872 			return (FALSE);
   3873 		if (xdrs->x_op == XDR_DECODE) {
   3874 			if (xdrs->x_ops == &xdrmblk_ops) {
   3875 				objp->data_val = NULL;
   3876 				return (xdrmblk_getmblk(xdrs, &objp->mblk,
   3877 				    &objp->data_len));
   3878 			}
   3879 			objp->mblk = NULL;
   3880 			if (xdrs->x_ops == &xdrrdmablk_ops) {
   3881 				int retval;
   3882 				retval = xdrrdma_getrdmablk(xdrs,
   3883 				    &objp->rlist,
   3884 				    &objp->data_len,
   3885 				    &objp->conn, NFS4_DATA_LIMIT);
   3886 				if (retval == FALSE)
   3887 					return (FALSE);
   3888 				return (xdrrdma_read_from_client(objp->rlist,
   3889 				    &objp->conn, objp->data_len));
   3890 			}
   3891 		}
   3892 		/* Else fall thru for the xdr_bytes(). */
   3893 		return (xdr_bytes(xdrs, (char **)&objp->data_val,
   3894 		    (uint_t *)&objp->data_len, NFS4_DATA_LIMIT));
   3895 	}
   3896 	if (objp->rlist != NULL) {
   3897 		(void) xdrrdma_free_clist(objp->conn, objp->rlist);
   3898 		objp->rlist = NULL;
   3899 		objp->data_val = NULL;
   3900 
   3901 		return (TRUE);
   3902 	}
   3903 
   3904 	/*
   3905 	 * Optimized free case
   3906 	 */
   3907 	if (objp->data_val != NULL)
   3908 		kmem_free(objp->data_val, objp->data_len);
   3909 	return (TRUE);
   3910 }
   3911 
   3912 static bool_t
   3913 xdr_WRITE4res(XDR *xdrs, WRITE4res *objp)
   3914 {
   3915 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   3916 		return (FALSE);
   3917 	if (objp->status != NFS4_OK)
   3918 		return (TRUE);
   3919 	if (!xdr_u_int(xdrs, &objp->count))
   3920 		return (FALSE);
   3921 	if (!xdr_int(xdrs, (int *)&objp->committed))
   3922 		return (FALSE);
   3923 	return (xdr_u_longlong_t(xdrs,
   3924 	    (u_longlong_t *)&objp->writeverf));
   3925 }
   3926 
   3927 static bool_t
   3928 xdr_snfs_argop4_free(XDR *xdrs, nfs_argop4 **arrayp, int len)
   3929 {
   3930 	int i;
   3931 	nfs_argop4 *array = *arrayp;
   3932 
   3933 	/*
   3934 	 * Optimized XDR_FREE only args array
   3935 	 */
   3936 	ASSERT(xdrs->x_op == XDR_FREE);
   3937 
   3938 	/*
   3939 	 * Nothing to do?
   3940 	 */
   3941 	if (array == NULL)
   3942 		return (TRUE);
   3943 
   3944 	for (i = 0; i < len; i++) {
   3945 		/*
   3946 		 * These should be ordered by frequency of use
   3947 		 */
   3948 		switch (array[i].argop) {
   3949 		case OP_PUTFH:
   3950 			if (array[i].nfs_argop4_u.opputfh.object.nfs_fh4_val !=
   3951 			    NULL) {
   3952 				kmem_free(array[i].nfs_argop4_u.opputfh.object.
   3953 				    nfs_fh4_val,
   3954 				    array[i].nfs_argop4_u.opputfh.object.
   3955 				    nfs_fh4_len);
   3956 			}
   3957 			continue;
   3958 		case OP_GETATTR:
   3959 		case OP_GETFH:
   3960 			continue;
   3961 		case OP_LOOKUP:
   3962 			if (array[i].nfs_argop4_u.oplookup.objname.
   3963 			    utf8string_val != NULL) {
   3964 				kmem_free(array[i].nfs_argop4_u.oplookup.
   3965 				    objname.utf8string_val,
   3966 				    array[i].nfs_argop4_u.oplookup.
   3967 				    objname.utf8string_len);
   3968 			}
   3969 			continue;
   3970 		case OP_OPEN:
   3971 			(void) xdr_OPEN4args(xdrs,
   3972 			    &array[i].nfs_argop4_u.opopen);
   3973 			continue;
   3974 		case OP_CLOSE:
   3975 		case OP_ACCESS:
   3976 		case OP_READ:
   3977 			continue;
   3978 		case OP_WRITE:
   3979 			(void) xdr_WRITE4args(xdrs,
   3980 			    &array[i].nfs_argop4_u.opwrite);
   3981 			continue;
   3982 		case OP_DELEGRETURN:
   3983 		case OP_LOOKUPP:
   3984 		case OP_READDIR:
   3985 			continue;
   3986 		case OP_REMOVE:
   3987 			if (array[i].nfs_argop4_u.opremove.target.
   3988 			    utf8string_val != NULL) {
   3989 				kmem_free(array[i].nfs_argop4_u.opremove.target.
   3990 				    utf8string_val,
   3991 				    array[i].nfs_argop4_u.opremove.target.
   3992 				    utf8string_len);
   3993 			}
   3994 			continue;
   3995 		case OP_COMMIT:
   3996 			continue;
   3997 		case OP_CREATE:
   3998 			(void) xdr_CREATE4args(xdrs,
   3999 			    &array[i].nfs_argop4_u.opcreate);
   4000 			continue;
   4001 		case OP_DELEGPURGE:
   4002 			continue;
   4003 		case OP_LINK:
   4004 			if (array[i].nfs_argop4_u.oplink.newname.
   4005 			    utf8string_val != NULL) {
   4006 				kmem_free(array[i].nfs_argop4_u.oplink.newname.
   4007 				    utf8string_val,
   4008 				    array[i].nfs_argop4_u.oplink.newname.
   4009 				    utf8string_len);
   4010 			}
   4011 			continue;
   4012 		case OP_LOCK:
   4013 			(void) xdr_LOCK4args(xdrs,
   4014 			    &array[i].nfs_argop4_u.oplock);
   4015 			continue;
   4016 		case OP_LOCKT:
   4017 			(void) xdr_LOCKT4args(xdrs,
   4018 			    &array[i].nfs_argop4_u.oplockt);
   4019 			continue;
   4020 		case OP_LOCKU:
   4021 			continue;
   4022 		case OP_NVERIFY:
   4023 			(void) xdr_fattr4(xdrs,
   4024 			    &array[i].nfs_argop4_u.opnverify.obj_attributes);
   4025 			continue;
   4026 		case OP_OPENATTR:
   4027 		case OP_OPEN_CONFIRM:
   4028 		case OP_OPEN_DOWNGRADE:
   4029 		case OP_PUTPUBFH:
   4030 		case OP_PUTROOTFH:
   4031 		case OP_READLINK:
   4032 			continue;
   4033 		case OP_RENAME:
   4034 			if (array[i].nfs_argop4_u.oprename.oldname.
   4035 			    utf8string_val != NULL) {
   4036 				kmem_free(array[i].nfs_argop4_u.oprename.
   4037 				    oldname.utf8string_val,
   4038 				    array[i].nfs_argop4_u.oprename.
   4039 				    oldname.utf8string_len);
   4040 			}
   4041 			if (array[i].nfs_argop4_u.oprename.newname.
   4042 			    utf8string_val != NULL) {
   4043 				kmem_free(array[i].nfs_argop4_u.oprename.
   4044 				    newname.utf8string_val,
   4045 				    array[i].nfs_argop4_u.oprename.
   4046 				    newname.utf8string_len);
   4047 			}
   4048 			continue;
   4049 		case OP_RENEW:
   4050 		case OP_RESTOREFH:
   4051 		case OP_SAVEFH:
   4052 			continue;
   4053 		case OP_SECINFO:
   4054 			if (array[i].nfs_argop4_u.opsecinfo.name.
   4055 			    utf8string_val != NULL) {
   4056 				kmem_free(array[i].nfs_argop4_u.opsecinfo.name.
   4057 				    utf8string_val,
   4058 				    array[i].nfs_argop4_u.opsecinfo.name.
   4059 				    utf8string_len);
   4060 			}
   4061 			continue;
   4062 		case OP_SETATTR:
   4063 			(void) xdr_fattr4(xdrs,
   4064 			    &array[i].nfs_argop4_u.opsetattr.obj_attributes);
   4065 			continue;
   4066 		case OP_SETCLIENTID:
   4067 			(void) xdr_SETCLIENTID4args(xdrs,
   4068 			    &array[i].nfs_argop4_u.opsetclientid);
   4069 			continue;
   4070 		case OP_SETCLIENTID_CONFIRM:
   4071 			continue;
   4072 		case OP_VERIFY:
   4073 			(void) xdr_fattr4(xdrs,
   4074 			    &array[i].nfs_argop4_u.opverify.obj_attributes);
   4075 			continue;
   4076 		case OP_RELEASE_LOCKOWNER:
   4077 			if (array[i].nfs_argop4_u.oprelease_lockowner.
   4078 			    lock_owner.owner_val != NULL) {
   4079 				kmem_free(array[i].nfs_argop4_u.
   4080 				    oprelease_lockowner.lock_owner.owner_val,
   4081 				    array[i].nfs_argop4_u.
   4082 				    oprelease_lockowner.lock_owner.owner_len);
   4083 			}
   4084 			continue;
   4085 		case OP_ILLEGAL:
   4086 			continue;
   4087 		default:
   4088 			/*
   4089 			 * An invalid op is a coding error, it should never
   4090 			 * have been decoded.
   4091 			 * Don't error because the caller cannot finish
   4092 			 * freeing the residual memory of the array.
   4093 			 */
   4094 			continue;
   4095 		}
   4096 	}
   4097 
   4098 	kmem_free(*arrayp, len * sizeof (nfs_argop4));
   4099 	*arrayp = NULL;
   4100 	return (TRUE);
   4101 }
   4102 
   4103 static bool_t
   4104 xdr_nfs_argop4(XDR *xdrs, nfs_argop4 *objp)
   4105 {
   4106 	rdma_chunkinfo_t rci;
   4107 	struct xdr_ops *xops = xdrrdma_xops();
   4108 
   4109 	/*
   4110 	 * These should be ordered by frequency of use
   4111 	 */
   4112 	switch (objp->argop) {
   4113 	case OP_PUTFH:
   4114 		return (xdr_bytes(xdrs,
   4115 		    (char **)&objp->nfs_argop4_u.opputfh.object.nfs_fh4_val,
   4116 		    (uint_t *)&objp->nfs_argop4_u.opputfh.object.nfs_fh4_len,
   4117 		    NFS4_FHSIZE));
   4118 	case OP_GETATTR:
   4119 		/*
   4120 		 * ACLs can become relatively large ( > 8K) and the default
   4121 		 * 8K reply chunk of RDMA may not suffice. Check for
   4122 		 * get ACL bit and if it's RDMA, add a chunk equal the size
   4123 		 * of the transfer size to the reply chunk list.
   4124 		 */
   4125 		if ((xdrs->x_ops == &xdrrdma_ops || xdrs->x_ops == xops) &&
   4126 		    (xdrs->x_op == XDR_ENCODE) &&
   4127 		    (objp->nfs_argop4_u.opgetattr.attr_request &
   4128 		    FATTR4_ACL_MASK)) {
   4129 			rci.rci_type = RCI_REPLY_CHUNK;
   4130 			rci.rci_len = objp->nfs_argop4_u.opgetattr.mi->mi_tsize;
   4131 			XDR_CONTROL(xdrs, XDR_RDMA_ADD_CHUNK, &rci);
   4132 
   4133 			DTRACE_PROBE1(xdr__i__argop4__getattr, int,
   4134 			    rci.rci_len);
   4135 		}
   4136 		return (xdr_bitmap4(xdrs,
   4137 		    &objp->nfs_argop4_u.opgetattr.attr_request));
   4138 	case OP_GETFH:
   4139 		return (TRUE);
   4140 	case OP_LOOKUP:
   4141 		return (xdr_bytes(xdrs, (char **)&objp->nfs_argop4_u.oplookup.
   4142 		    objname.utf8string_val,
   4143 		    (uint_t *)&objp->nfs_argop4_u.oplookup.
   4144 		    objname.utf8string_len,
   4145 		    NFS4_MAX_UTF8STRING));
   4146 	case OP_OPEN:
   4147 		return (xdr_OPEN4args(xdrs, &objp->nfs_argop4_u.opopen));
   4148 	case OP_CLOSE:
   4149 		return (xdr_CLOSE4args(xdrs, &objp->nfs_argop4_u.opclose));
   4150 	case OP_ACCESS:
   4151 		return (xdr_u_int(xdrs,
   4152 		    &objp->nfs_argop4_u.opaccess.access));
   4153 	case OP_READ:
   4154 		return (xdr_READ4args(xdrs, &objp->nfs_argop4_u.opread));
   4155 	case OP_WRITE:
   4156 		return (xdr_WRITE4args(xdrs, &objp->nfs_argop4_u.opwrite));
   4157 	case OP_DELEGRETURN:
   4158 		if (!xdr_u_int(xdrs,
   4159 		    &objp->nfs_argop4_u.opdelegreturn.deleg_stateid.seqid))
   4160 			return (FALSE);
   4161 		return (xdr_opaque(xdrs,
   4162 		    objp->nfs_argop4_u.opdelegreturn.deleg_stateid.other, 12));
   4163 	case OP_LOOKUPP:
   4164 		return (TRUE);
   4165 	case OP_READDIR:
   4166 		return (xdr_READDIR4args(xdrs, &objp->nfs_argop4_u.opreaddir));
   4167 	case OP_REMOVE:
   4168 		return (xdr_bytes(xdrs, (char **)&objp->nfs_argop4_u.opremove.
   4169 		    target.utf8string_val,
   4170 		    (uint_t *)&objp->nfs_argop4_u.opremove.
   4171 		    target.utf8string_len,
   4172 		    NFS4_MAX_UTF8STRING));
   4173 	case OP_COMMIT:
   4174 		if (!xdr_u_longlong_t(xdrs,
   4175 		    (u_longlong_t *)&objp->nfs_argop4_u.opcommit.offset))
   4176 			return (FALSE);
   4177 		return (xdr_u_int(xdrs, &objp->nfs_argop4_u.opcommit.count));
   4178 	case OP_CREATE:
   4179 		return (xdr_CREATE4args(xdrs, &objp->nfs_argop4_u.opcreate));
   4180 	case OP_DELEGPURGE:
   4181 		return (xdr_u_longlong_t(xdrs,
   4182 		    (u_longlong_t *)&objp->nfs_argop4_u.opdelegpurge.clientid));
   4183 	case OP_LINK:
   4184 		return (xdr_bytes(xdrs,
   4185 		    (char **)&objp->nfs_argop4_u.oplink.newname.utf8string_val,
   4186 		    (uint_t *)&objp->nfs_argop4_u.oplink.newname.utf8string_len,
   4187 		    NFS4_MAX_UTF8STRING));
   4188 	case OP_LOCK:
   4189 		return (xdr_LOCK4args(xdrs, &objp->nfs_argop4_u.oplock));
   4190 	case OP_LOCKT:
   4191 		return (xdr_LOCKT4args(xdrs, &objp->nfs_argop4_u.oplockt));
   4192 	case OP_LOCKU:
   4193 		return (xdr_LOCKU4args(xdrs, &objp->nfs_argop4_u.oplocku));
   4194 	case OP_NVERIFY:
   4195 		return (xdr_fattr4(xdrs,
   4196 		    &objp->nfs_argop4_u.opnverify.obj_attributes));
   4197 	case OP_OPENATTR:
   4198 		return (xdr_bool(xdrs,
   4199 		    &objp->nfs_argop4_u.opopenattr.createdir));
   4200 	case OP_OPEN_CONFIRM:
   4201 		if (!xdr_u_int(xdrs, &objp->nfs_argop4_u.opopen_confirm.
   4202 		    open_stateid.seqid))
   4203 			return (FALSE);
   4204 		if (!xdr_opaque(xdrs, objp->nfs_argop4_u.opopen_confirm.
   4205 		    open_stateid.other, 12))
   4206 			return (FALSE);
   4207 		return (xdr_u_int(xdrs, &objp->nfs_argop4_u.opopen_confirm.
   4208 		    seqid));
   4209 	case OP_OPEN_DOWNGRADE:
   4210 		return (xdr_OPEN_DOWNGRADE4args(xdrs,
   4211 		    &objp->nfs_argop4_u.opopen_downgrade));
   4212 	case OP_PUTPUBFH:
   4213 		return (TRUE);
   4214 	case OP_PUTROOTFH:
   4215 		return (TRUE);
   4216 	case OP_READLINK:
   4217 		if ((xdrs->x_ops == &xdrrdma_ops || xdrs->x_ops == xops) &&
   4218 		    xdrs->x_op == XDR_ENCODE) {
   4219 			rci.rci_type = RCI_REPLY_CHUNK;
   4220 			rci.rci_len = MAXPATHLEN;
   4221 			XDR_CONTROL(xdrs, XDR_RDMA_ADD_CHUNK, &rci);
   4222 		}
   4223 		return (TRUE);
   4224 	case OP_RENAME:
   4225 		if (!xdr_bytes(xdrs, (char **)&objp->nfs_argop4_u.oprename.
   4226 		    oldname.utf8string_val,
   4227 		    (uint_t *)&objp->nfs_argop4_u.oprename.
   4228 		    oldname.utf8string_len,
   4229 		    NFS4_MAX_UTF8STRING))
   4230 			return (FALSE);
   4231 		return (xdr_bytes(xdrs, (char **)&objp->nfs_argop4_u.oprename.
   4232 		    newname.utf8string_val,
   4233 		    (uint_t *)&objp->nfs_argop4_u.oprename.
   4234 		    newname.utf8string_len,
   4235 		    NFS4_MAX_UTF8STRING));
   4236 	case OP_RENEW:
   4237 		return (xdr_u_longlong_t(xdrs,
   4238 		    (u_longlong_t *)&objp->nfs_argop4_u.oprenew.clientid));
   4239 	case OP_RESTOREFH:
   4240 		return (TRUE);
   4241 	case OP_SAVEFH:
   4242 		return (TRUE);
   4243 	case OP_SECINFO:
   4244 		return (xdr_bytes(xdrs,
   4245 		    (char **)&objp->nfs_argop4_u.opsecinfo.name.utf8string_val,
   4246 		    (uint_t *)&objp->nfs_argop4_u.opsecinfo.name.utf8string_len,
   4247 		    NFS4_MAX_UTF8STRING));
   4248 	case OP_SETATTR:
   4249 		if (!xdr_u_int(xdrs, &objp->nfs_argop4_u.opsetattr.
   4250 		    stateid.seqid))
   4251 			return (FALSE);
   4252 		if (!xdr_opaque(xdrs, objp->nfs_argop4_u.opsetattr.
   4253 		    stateid.other, 12))
   4254 			return (FALSE);
   4255 		return (xdr_fattr4(xdrs, &objp->nfs_argop4_u.opsetattr.
   4256 		    obj_attributes));
   4257 	case OP_SETCLIENTID:
   4258 		return (xdr_SETCLIENTID4args(xdrs,
   4259 		    &objp->nfs_argop4_u.opsetclientid));
   4260 	case OP_SETCLIENTID_CONFIRM:
   4261 		if (!xdr_u_longlong_t(xdrs, (u_longlong_t *)&objp->nfs_argop4_u.
   4262 		    opsetclientid_confirm.clientid))
   4263 			return (FALSE);
   4264 		return (xdr_u_longlong_t(xdrs,
   4265 		    (u_longlong_t *)&objp->nfs_argop4_u.
   4266 		    opsetclientid_confirm.setclientid_confirm));
   4267 	case OP_VERIFY:
   4268 		return (xdr_fattr4(xdrs,
   4269 		    &objp->nfs_argop4_u.opverify.obj_attributes));
   4270 	case OP_RELEASE_LOCKOWNER:
   4271 		if (!xdr_u_longlong_t(xdrs,
   4272 		    (u_longlong_t *)&objp->nfs_argop4_u.
   4273 		    oprelease_lockowner.lock_owner.clientid))
   4274 			return (FALSE);
   4275 		return (xdr_bytes(xdrs,
   4276 		    (char **)&objp->nfs_argop4_u.oprelease_lockowner.
   4277 		    lock_owner.owner_val,
   4278 		    (uint_t *)&objp->nfs_argop4_u.oprelease_lockowner.
   4279 		    lock_owner.owner_len, NFS4_OPAQUE_LIMIT));
   4280 	case OP_ILLEGAL:
   4281 		return (TRUE);
   4282 	}
   4283 	return (FALSE);
   4284 }
   4285 
   4286 static bool_t
   4287 xdr_cnfs_argop4_wrap(XDR *xdrs, nfs_argop4 *objp)
   4288 {
   4289 	if (!xdr_int(xdrs, (int *)&objp->argop))
   4290 		return (FALSE);
   4291 
   4292 	return (xdr_nfs_argop4(xdrs, objp));
   4293 }
   4294 
   4295 static bool_t
   4296 xdr_snfs_argop4(XDR *xdrs, nfs_argop4 *objp)
   4297 {
   4298 	if (!xdr_int(xdrs, (int *)&objp->argop))
   4299 		return (FALSE);
   4300 
   4301 	switch (objp->argop) {
   4302 	case OP_PUTFH:
   4303 		return (xdr_decode_nfs_fh4(xdrs,
   4304 		    &objp->nfs_argop4_u.opputfh.object));
   4305 	default:
   4306 		return (xdr_nfs_argop4(xdrs, objp));
   4307 	}
   4308 }
   4309 
   4310 /*
   4311  * Client side encode only arg op processing
   4312  */
   4313 static bool_t
   4314 xdr_cnfs_argop4(XDR *xdrs, nfs_argop4 *objp)
   4315 {
   4316 	int len;
   4317 	int op;
   4318 	nfs4_sharedfh_t *sfh;
   4319 	mntinfo4_t *mi;
   4320 	rpc_inline_t *ptr;
   4321 
   4322 	ASSERT(xdrs->x_op == XDR_ENCODE);
   4323 
   4324 	/*
   4325 	 * Special case the private pseudo ops
   4326 	 */
   4327 	if (!(objp->argop & SUNW_PRIVATE_OP))
   4328 		return (xdr_cnfs_argop4_wrap(xdrs, objp));
   4329 
   4330 	/*
   4331 	 * These should be ordered by frequency of use
   4332 	 */
   4333 	switch (objp->argop) {
   4334 	case OP_CPUTFH:
   4335 		/*
   4336 		 * We are passed in the file handle as a nfs4_sharedfh_t *
   4337 		 * We need to acquire the correct locks so we can copy it out.
   4338 		 */
   4339 		sfh = (nfs4_sharedfh_t *)objp->nfs_argop4_u.opcputfh.sfh;
   4340 		mi = sfh->sfh_mi;
   4341 		(void) nfs_rw_enter_sig(&mi->mi_fh_lock, RW_READER, 0);
   4342 
   4343 		len = sfh->sfh_fh.nfs_fh4_len;
   4344 		ASSERT(len <= NFS4_FHSIZE);
   4345 
   4346 		/*
   4347 		 * First try and inline the copy
   4348 		 * Must first be a multiple of BYTES_PER_XDR_UNIT
   4349 		 */
   4350 		if (!(len % BYTES_PER_XDR_UNIT) &&
   4351 		    (ptr = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT + len)) !=
   4352 		    NULL) {
   4353 			IXDR_PUT_U_INT32(ptr, OP_PUTFH);
   4354 			IXDR_PUT_U_INT32(ptr, len);
   4355 			bcopy(sfh->sfh_fh.nfs_fh4_val, ptr, len);
   4356 			nfs_rw_exit(&mi->mi_fh_lock);
   4357 			return (TRUE);
   4358 		}
   4359 
   4360 		op = OP_PUTFH;
   4361 		if (!XDR_PUTINT32(xdrs, &op)) {
   4362 			nfs_rw_exit(&mi->mi_fh_lock);
   4363 			return (FALSE);
   4364 		}
   4365 		if (!XDR_PUTINT32(xdrs, &len)) {
   4366 			nfs_rw_exit(&mi->mi_fh_lock);
   4367 			return (FALSE);
   4368 		}
   4369 		if (!(len % BYTES_PER_XDR_UNIT)) {
   4370 			if (XDR_PUTBYTES(xdrs, sfh->sfh_fh.nfs_fh4_val, len)) {
   4371 				nfs_rw_exit(&mi->mi_fh_lock);
   4372 				return (TRUE);
   4373 			}
   4374 		} else if (xdr_opaque(xdrs, sfh->sfh_fh.nfs_fh4_val, len)) {
   4375 			nfs_rw_exit(&mi->mi_fh_lock);
   4376 			return (TRUE);
   4377 		}
   4378 		nfs_rw_exit(&mi->mi_fh_lock);
   4379 		return (FALSE);
   4380 	case OP_CLOOKUP:
   4381 		len = strlen(objp->nfs_argop4_u.opclookup.cname);
   4382 		if (len > NFS4_MAX_UTF8STRING)
   4383 			return (FALSE);
   4384 		op = OP_LOOKUP;
   4385 		if (XDR_PUTINT32(xdrs, &op)) {
   4386 			if (XDR_PUTINT32(xdrs, &len)) {
   4387 				return (xdr_opaque(xdrs,
   4388 				    objp->nfs_argop4_u.opclookup.cname,
   4389 				    len));
   4390 			}
   4391 		}
   4392 		return (FALSE);
   4393 	case OP_COPEN:
   4394 		/* op processing inlined in xdr_OPEN4cargs */
   4395 		return (xdr_OPEN4cargs(xdrs, &objp->nfs_argop4_u.opcopen));
   4396 	case OP_CREMOVE:
   4397 		len = strlen(objp->nfs_argop4_u.opcremove.ctarget);
   4398 		if (len > NFS4_MAX_UTF8STRING)
   4399 			return (FALSE);
   4400 		op = OP_REMOVE;
   4401 		if (XDR_PUTINT32(xdrs, &op)) {
   4402 			if (XDR_PUTINT32(xdrs, &len)) {
   4403 				return (xdr_opaque(xdrs,
   4404 				    objp->nfs_argop4_u.opcremove.ctarget,
   4405 				    len));
   4406 			}
   4407 		}
   4408 		return (FALSE);
   4409 	case OP_CCREATE:
   4410 		op = OP_CREATE;
   4411 		if (!XDR_PUTINT32(xdrs, &op))
   4412 			return (FALSE);
   4413 		return (xdr_CREATE4cargs(xdrs, &objp->nfs_argop4_u.opccreate));
   4414 	case OP_CLINK:
   4415 		len = strlen(objp->nfs_argop4_u.opclink.cnewname);
   4416 		if (len > NFS4_MAX_UTF8STRING)
   4417 			return (FALSE);
   4418 		op = OP_LINK;
   4419 		if (XDR_PUTINT32(xdrs, &op)) {
   4420 			if (XDR_PUTINT32(xdrs, &len)) {
   4421 				return (xdr_opaque(xdrs,
   4422 				    objp->nfs_argop4_u.opclink.cnewname,
   4423 				    len));
   4424 			}
   4425 		}
   4426 		return (FALSE);
   4427 	case OP_CRENAME:
   4428 		len = strlen(objp->nfs_argop4_u.opcrename.coldname);
   4429 		if (len > NFS4_MAX_UTF8STRING)
   4430 			return (FALSE);
   4431 		op = OP_RENAME;
   4432 		if (!XDR_PUTINT32(xdrs, &op))
   4433 			return (FALSE);
   4434 		if (!XDR_PUTINT32(xdrs, &len))
   4435 			return (FALSE);
   4436 		if (!xdr_opaque(xdrs,
   4437 		    objp->nfs_argop4_u.opcrename.coldname, len))
   4438 			return (FALSE);
   4439 		len = strlen(objp->nfs_argop4_u.opcrename.cnewname);
   4440 		if (len > NFS4_MAX_UTF8STRING)
   4441 			return (FALSE);
   4442 		if (XDR_PUTINT32(xdrs, &len)) {
   4443 			return (xdr_opaque(xdrs,
   4444 			    objp->nfs_argop4_u.opcrename.cnewname, len));
   4445 		}
   4446 		return (FALSE);
   4447 	case OP_CSECINFO:
   4448 		len = strlen(objp->nfs_argop4_u.opcsecinfo.cname);
   4449 		if (len > NFS4_MAX_UTF8STRING)
   4450 			return (FALSE);
   4451 		op = OP_SECINFO;
   4452 		if (XDR_PUTINT32(xdrs, &op)) {
   4453 			if (XDR_PUTINT32(xdrs, &len)) {
   4454 				return (xdr_opaque(xdrs,
   4455 				    objp->nfs_argop4_u.opcsecinfo.cname,
   4456 				    len));
   4457 			}
   4458 		}
   4459 		return (FALSE);
   4460 	}
   4461 	return (FALSE);
   4462 }
   4463 
   4464 /*
   4465  * Note that the len and decode_len will only be different in the case
   4466  * of the client's use of this free function.  If the server is
   4467  * freeing results, then the len/decode_len will always match.
   4468  */
   4469 static bool_t
   4470 xdr_nfs_resop4_free(XDR *xdrs, nfs_resop4 **arrayp, int len, int decode_len)
   4471 {
   4472 	int i;
   4473 	nfs_resop4 *array = *arrayp;
   4474 	nfs4_ga_res_t *gr;
   4475 
   4476 	/*
   4477 	 * Optimized XDR_FREE only results array
   4478 	 */
   4479 	ASSERT(xdrs->x_op == XDR_FREE);
   4480 
   4481 	if (array == NULL)
   4482 		return (TRUE);
   4483 
   4484 	for (i = 0; i < decode_len; i++) {
   4485 		/*
   4486 		 * These should be ordered by frequency of use
   4487 		 */
   4488 		switch (array[i].resop) {
   4489 		case OP_PUTFH:
   4490 			continue;
   4491 		case OP_GETATTR:
   4492 			if (array[i].nfs_resop4_u.opgetattr.status != NFS4_OK)
   4493 				continue;
   4494 
   4495 			gr = &array[i].nfs_resop4_u.opgetattr.ga_res;
   4496 			if (gr->n4g_ext_res) {
   4497 				if (gr->n4g_resbmap & FATTR4_FS_LOCATIONS_MASK)
   4498 					(void) xdr_fattr4_fs_locations(xdrs,
   4499 					    &gr->n4g_ext_res->n4g_fslocations);
   4500 				kmem_free(gr->n4g_ext_res,
   4501 				    sizeof (struct nfs4_ga_ext_res));
   4502 			}
   4503 			continue;
   4504 		case OP_GETFH:
   4505 			if (array[i].nfs_resop4_u.opgetfh.status != NFS4_OK)
   4506 				continue;
   4507 			if (array[i].nfs_resop4_u.opgetfh.object.nfs_fh4_val !=
   4508 			    NULL) {
   4509 				kmem_free(array[i].nfs_resop4_u.opgetfh.object.
   4510 				    nfs_fh4_val,
   4511 				    array[i].nfs_resop4_u.opgetfh.object.
   4512 				    nfs_fh4_len);
   4513 			}
   4514 			continue;
   4515 		case OP_LOOKUP:
   4516 			continue;
   4517 		case OP_OPEN:
   4518 			(void) xdr_OPEN4res(xdrs, &array[i].nfs_resop4_u.
   4519 			    opopen);
   4520 			continue;
   4521 		case OP_CLOSE:
   4522 		case OP_ACCESS:
   4523 			continue;
   4524 		case OP_READ:
   4525 			(void) xdr_READ4res(xdrs,
   4526 			    &array[i].nfs_resop4_u.opread);
   4527 			continue;
   4528 		case OP_WRITE:
   4529 		case OP_DELEGRETURN:
   4530 		case OP_LOOKUPP:
   4531 		case OP_READDIR:
   4532 		case OP_REMOVE:
   4533 		case OP_COMMIT:
   4534 		case OP_CREATE:
   4535 		case OP_DELEGPURGE:
   4536 		case OP_LINK:
   4537 			continue;
   4538 		case OP_LOCK:
   4539 			(void) xdr_LOCK4res(xdrs, &array[i].nfs_resop4_u.
   4540 			    oplock);
   4541 			continue;
   4542 		case OP_LOCKT:
   4543 			(void) xdr_LOCKT4res(xdrs, &array[i].nfs_resop4_u.
   4544 			    oplockt);
   4545 			continue;
   4546 		case OP_LOCKU:
   4547 		case OP_NVERIFY:
   4548 		case OP_OPENATTR:
   4549 		case OP_OPEN_CONFIRM:
   4550 		case OP_OPEN_DOWNGRADE:
   4551 		case OP_PUTPUBFH:
   4552 		case OP_PUTROOTFH:
   4553 		case OP_RENAME:
   4554 		case OP_RENEW:
   4555 		case OP_RESTOREFH:
   4556 		case OP_SAVEFH:
   4557 			continue;
   4558 		case OP_READLINK:
   4559 			(void) xdr_READLINK4res(xdrs, &array[i].nfs_resop4_u.
   4560 			    opreadlink);
   4561 			continue;
   4562 		case OP_SECINFO:
   4563 			(void) xdr_array(xdrs,
   4564 			    (char **)&array[i].nfs_resop4_u.opsecinfo.
   4565 			    SECINFO4resok_val,
   4566 			    (uint_t *)&array[i].nfs_resop4_u.opsecinfo.
   4567 			    SECINFO4resok_len,
   4568 			    NFS4_SECINFO_LIMIT, sizeof (secinfo4),
   4569 			    (xdrproc_t)xdr_secinfo4);
   4570 			continue;
   4571 		case OP_SETCLIENTID:
   4572 			(void) xdr_SETCLIENTID4res(xdrs,
   4573 			    &array[i].nfs_resop4_u.opsetclientid);
   4574 			continue;
   4575 		case OP_SETATTR:
   4576 		case OP_SETCLIENTID_CONFIRM:
   4577 		case OP_VERIFY:
   4578 		case OP_RELEASE_LOCKOWNER:
   4579 		case OP_ILLEGAL:
   4580 			continue;
   4581 		default:
   4582 			/*
   4583 			 * An invalid op is a coding error, it should never
   4584 			 * have been decoded.
   4585 			 * Don't error because the caller cannot finish
   4586 			 * freeing the residual memory of the array.
   4587 			 */
   4588 			continue;
   4589 		}
   4590 	}
   4591 
   4592 	kmem_free(*arrayp, len * sizeof (nfs_resop4));
   4593 	*arrayp = NULL;
   4594 	return (TRUE);
   4595 }
   4596 
   4597 static bool_t
   4598 xdr_snfs_resop4_free(XDR *xdrs, nfs_resop4 **arrayp, int len, int decode_len)
   4599 {
   4600 	return (xdr_nfs_resop4_free(xdrs, arrayp, len, decode_len));
   4601 }
   4602 
   4603 static bool_t
   4604 xdr_nfs_resop4(XDR *xdrs, nfs_resop4 *objp)
   4605 {
   4606 	/*
   4607 	 * These should be ordered by frequency of use
   4608 	 */
   4609 	switch (objp->resop) {
   4610 	case OP_PUTFH:
   4611 		return (xdr_int(xdrs,
   4612 		    (int32_t *)&objp->nfs_resop4_u.opputfh.status));
   4613 	case OP_GETATTR:
   4614 		if (!xdr_int(xdrs,
   4615 		    (int32_t *)&objp->nfs_resop4_u.opgetattr.status))
   4616 			return (FALSE);
   4617 		if (objp->nfs_resop4_u.opgetattr.status != NFS4_OK)
   4618 			return (TRUE);
   4619 		return (xdr_fattr4(xdrs,
   4620 		    &objp->nfs_resop4_u.opgetattr.obj_attributes));
   4621 	case OP_GETFH:
   4622 		if (!xdr_int(xdrs,
   4623 		    (int32_t *)&objp->nfs_resop4_u.opgetfh.status))
   4624 			return (FALSE);
   4625 		if (objp->nfs_resop4_u.opgetfh.status != NFS4_OK)
   4626 			return (TRUE);
   4627 		return (xdr_bytes(xdrs,
   4628 		    (char **)&objp->nfs_resop4_u.opgetfh.object.nfs_fh4_val,
   4629 		    (uint_t *)&objp->nfs_resop4_u.opgetfh.object.nfs_fh4_len,
   4630 		    NFS4_FHSIZE));
   4631 	case OP_LOOKUP:
   4632 		return (xdr_int(xdrs,
   4633 		    (int32_t *)&objp->nfs_resop4_u.oplookup.status));
   4634 	case OP_OPEN:
   4635 		return (xdr_OPEN4res(xdrs, &objp->nfs_resop4_u.opopen));
   4636 	case OP_CLOSE:
   4637 		return (xdr_CLOSE4res(xdrs, &objp->nfs_resop4_u.opclose));
   4638 	case OP_ACCESS:
   4639 		return (xdr_ACCESS4res(xdrs, &objp->nfs_resop4_u.opaccess));
   4640 	case OP_READ:
   4641 		return (xdr_READ4res(xdrs, &objp->nfs_resop4_u.opread));
   4642 	case OP_WRITE:
   4643 		return (xdr_WRITE4res(xdrs, &objp->nfs_resop4_u.opwrite));
   4644 	case OP_DELEGRETURN:
   4645 		return (xdr_int(xdrs,
   4646 		    (int32_t *)&objp->nfs_resop4_u.opdelegreturn.status));
   4647 	case OP_LOOKUPP:
   4648 		return (xdr_int(xdrs,
   4649 		    (int32_t *)&objp->nfs_resop4_u.oplookupp.status));
   4650 	case OP_READDIR:
   4651 		return (xdr_READDIR4res(xdrs, &objp->nfs_resop4_u.opreaddir));
   4652 	case OP_REMOVE:
   4653 		return (xdr_REMOVE4res(xdrs, &objp->nfs_resop4_u.opremove));
   4654 
   4655 	case OP_COMMIT:
   4656 		if (!xdr_int(xdrs,
   4657 		    (int32_t *)&objp->nfs_resop4_u.opcommit.status))
   4658 			return (FALSE);
   4659 		if (objp->nfs_resop4_u.opcommit.status != NFS4_OK)
   4660 			return (TRUE);
   4661 		return (xdr_u_longlong_t(xdrs,
   4662 		    (u_longlong_t *)&objp->nfs_resop4_u.opcommit.
   4663 		    writeverf));
   4664 	case OP_CREATE:
   4665 		return (xdr_CREATE4res(xdrs, &objp->nfs_resop4_u.opcreate));
   4666 	case OP_DELEGPURGE:
   4667 		return (xdr_int(xdrs,
   4668 		    (int32_t *)&objp->nfs_resop4_u.opdelegpurge.status));
   4669 	case OP_LINK:
   4670 		return (xdr_LINK4res(xdrs, &objp->nfs_resop4_u.oplink));
   4671 	case OP_LOCK:
   4672 		return (xdr_LOCK4res(xdrs, &objp->nfs_resop4_u.oplock));
   4673 	case OP_LOCKT:
   4674 		return (xdr_LOCKT4res(xdrs, &objp->nfs_resop4_u.oplockt));
   4675 	case OP_LOCKU:
   4676 		if (!xdr_int(xdrs,
   4677 		    (int32_t *)&objp->nfs_resop4_u.oplocku.status))
   4678 			return (FALSE);
   4679 		if (objp->nfs_resop4_u.oplocku.status != NFS4_OK)
   4680 			return (TRUE);
   4681 		if (!xdr_u_int(xdrs,
   4682 		    &objp->nfs_resop4_u.oplocku.lock_stateid.seqid))
   4683 			return (FALSE);
   4684 		return (xdr_opaque(xdrs,
   4685 		    objp->nfs_resop4_u.oplocku.lock_stateid.other,
   4686 		    12));
   4687 	case OP_NVERIFY:
   4688 		return (xdr_int(xdrs,
   4689 		    (int32_t *)&objp->nfs_resop4_u.opnverify.status));
   4690 	case OP_OPENATTR:
   4691 		return (xdr_int(xdrs,
   4692 		    (int32_t *)&objp->nfs_resop4_u.opopenattr.status));
   4693 	case OP_OPEN_CONFIRM:
   4694 		return (xdr_OPEN_CONFIRM4res(xdrs,
   4695 		    &objp->nfs_resop4_u.opopen_confirm));
   4696 	case OP_OPEN_DOWNGRADE:
   4697 		return (xdr_OPEN_DOWNGRADE4res(xdrs,
   4698 		    &objp->nfs_resop4_u.opopen_downgrade));
   4699 	case OP_PUTPUBFH:
   4700 		return (xdr_int(xdrs,
   4701 		    (int32_t *)&objp->nfs_resop4_u.opputpubfh.status));
   4702 	case OP_PUTROOTFH:
   4703 		return (xdr_int(xdrs,
   4704 		    (int32_t *)&objp->nfs_resop4_u.opputrootfh.status));
   4705 	case OP_READLINK:
   4706 		return (xdr_READLINK4res(xdrs, &objp->nfs_resop4_u.opreadlink));
   4707 	case OP_RENAME:
   4708 		return (xdr_RENAME4res(xdrs, &objp->nfs_resop4_u.oprename));
   4709 	case OP_RENEW:
   4710 		return (xdr_int(xdrs,
   4711 		    (int32_t *)&objp->nfs_resop4_u.oprenew.status));
   4712 	case OP_RESTOREFH:
   4713 		return (xdr_int(xdrs,
   4714 		    (int32_t *)&objp->nfs_resop4_u.oprestorefh.status));
   4715 	case OP_SAVEFH:
   4716 		return (xdr_int(xdrs,
   4717 		    (int32_t *)&objp->nfs_resop4_u.opsavefh.status));
   4718 	case OP_SECINFO:
   4719 		if (!xdr_int(xdrs, (int32_t *)&objp->nfs_resop4_u.opsecinfo.
   4720 		    status))
   4721 			return (FALSE);
   4722 		if (objp->nfs_resop4_u.opsecinfo.status != NFS4_OK)
   4723 			return (TRUE);
   4724 		return (xdr_array(xdrs, (char **)&objp->nfs_resop4_u.opsecinfo.
   4725 		    SECINFO4resok_val,
   4726 		    (uint_t *)&objp->nfs_resop4_u.opsecinfo.
   4727 		    SECINFO4resok_len,
   4728 		    NFS4_SECINFO_LIMIT, sizeof (secinfo4),
   4729 		    (xdrproc_t)xdr_secinfo4));
   4730 	case OP_SETATTR:
   4731 		if (!xdr_int(xdrs, (int32_t *)&objp->nfs_resop4_u.opsetattr.
   4732 		    status))
   4733 			return (FALSE);
   4734 		return (xdr_bitmap4(xdrs,
   4735 		    &objp->nfs_resop4_u.opsetattr.attrsset));
   4736 	case OP_SETCLIENTID:
   4737 		return (xdr_SETCLIENTID4res(xdrs,
   4738 		    &objp->nfs_resop4_u.opsetclientid));
   4739 	case OP_SETCLIENTID_CONFIRM:
   4740 		return (xdr_int(xdrs,
   4741 		    (int32_t *)&objp->nfs_resop4_u.opsetclientid_confirm.
   4742 		    status));
   4743 	case OP_VERIFY:
   4744 		return (xdr_int(xdrs,
   4745 		    (int32_t *)&objp->nfs_resop4_u.opverify.status));
   4746 	case OP_RELEASE_LOCKOWNER:
   4747 		return (xdr_int(xdrs,
   4748 		    (int32_t *)&objp->nfs_resop4_u.oprelease_lockowner.status));
   4749 	case OP_ILLEGAL:
   4750 		return (xdr_int(xdrs,
   4751 		    (int32_t *)&objp->nfs_resop4_u.opillegal.status));
   4752 	}
   4753 	return (FALSE);
   4754 }
   4755 
   4756 static bool_t
   4757 xdr_snfs_resop4(XDR *xdrs, nfs_resop4 *objp)
   4758 {
   4759 	if (!xdr_int(xdrs, (int *)&objp->resop))
   4760 		return (FALSE);
   4761 
   4762 	switch (objp->resop) {
   4763 	case OP_GETFH:
   4764 		if (!XDR_PUTINT32(xdrs,
   4765 		    (int32_t *)&objp->nfs_resop4_u.opgetfh.status))
   4766 			return (FALSE);
   4767 		if (objp->nfs_resop4_u.opgetfh.status != NFS4_OK)
   4768 			return (TRUE);
   4769 		return (xdr_encode_nfs_fh4(xdrs,
   4770 		    &objp->nfs_resop4_u.opgetfh.object));
   4771 	default:
   4772 		return (xdr_nfs_resop4(xdrs, objp));
   4773 	}
   4774 }
   4775 
   4776 static bool_t
   4777 xdr_nfs_resop4_clnt(XDR *xdrs, nfs_resop4 *objp, nfs_argop4 *aobjp)
   4778 {
   4779 	if (!xdr_int(xdrs, (int *)&objp->resop))
   4780 		return (FALSE);
   4781 	/*
   4782 	 * These should be ordered by frequency of use
   4783 	 */
   4784 	switch (objp->resop) {
   4785 	case OP_PUTFH:
   4786 		return (xdr_int(xdrs,
   4787 		    (int32_t *)&objp->nfs_resop4_u.opputfh.status));
   4788 	case OP_GETATTR:
   4789 		if (!xdr_int(xdrs,
   4790 		    (int32_t *)&objp->nfs_resop4_u.opgetattr.status))
   4791 			return (FALSE);
   4792 		if (objp->nfs_resop4_u.opgetattr.status != NFS4_OK)
   4793 			return (TRUE);
   4794 		return (xdr_ga_res(xdrs,
   4795 		    (GETATTR4res *)&objp->nfs_resop4_u.opgetattr,
   4796 		    &aobjp->nfs_argop4_u.opgetattr));
   4797 	case OP_GETFH:
   4798 		if (!xdr_int(xdrs,
   4799 		    (int32_t *)&objp->nfs_resop4_u.opgetfh.status))
   4800 			return (FALSE);
   4801 		if (objp->nfs_resop4_u.opgetfh.status != NFS4_OK)
   4802 			return (TRUE);
   4803 		return (xdr_bytes(xdrs,
   4804 		    (char **)&objp->nfs_resop4_u.opgetfh.object.nfs_fh4_val,
   4805 		    (uint_t *)&objp->nfs_resop4_u.opgetfh.object.nfs_fh4_len,
   4806 		    NFS4_FHSIZE));
   4807 	case OP_LOOKUP:
   4808 		return (xdr_int(xdrs,
   4809 		    (int32_t *)&objp->nfs_resop4_u.oplookup.status));
   4810 	case OP_NVERIFY:
   4811 		return (xdr_int(xdrs,
   4812 		    (int32_t *)&objp->nfs_resop4_u.opnverify.status));
   4813 	case OP_OPEN:
   4814 		return (xdr_OPEN4res(xdrs, &objp->nfs_resop4_u.opopen));
   4815 	case OP_CLOSE:
   4816 		return (xdr_CLOSE4res(xdrs, &objp->nfs_resop4_u.opclose));
   4817 	case OP_ACCESS:
   4818 		return (xdr_ACCESS4res(xdrs, &objp->nfs_resop4_u.opaccess));
   4819 	case OP_READ:
   4820 		return (xdr_READ4res_clnt(xdrs, &objp->nfs_resop4_u.opread,
   4821 		    &aobjp->nfs_argop4_u.opread));
   4822 	case OP_WRITE:
   4823 		return (xdr_WRITE4res(xdrs, &objp->nfs_resop4_u.opwrite));
   4824 	case OP_DELEGRETURN:
   4825 		return (xdr_int(xdrs,
   4826 		    (int32_t *)&objp->nfs_resop4_u.opdelegreturn.status));
   4827 	case OP_LOOKUPP:
   4828 		return (xdr_int(xdrs,
   4829 		    (int32_t *)&objp->nfs_resop4_u.oplookupp.status));
   4830 	case OP_READDIR:
   4831 		return (xdr_READDIR4res_clnt(xdrs,
   4832 		    &objp->nfs_resop4_u.opreaddirclnt,
   4833 		    &aobjp->nfs_argop4_u.opreaddir));
   4834 	case OP_REMOVE:
   4835 		return (xdr_REMOVE4res(xdrs, &objp->nfs_resop4_u.opremove));
   4836 
   4837 	case OP_COMMIT:
   4838 		if (!xdr_int(xdrs,
   4839 		    (int32_t *)&objp->nfs_resop4_u.opcommit.status))
   4840 			return (FALSE);
   4841 		if (objp->nfs_resop4_u.opcommit.status != NFS4_OK)
   4842 			return (TRUE);
   4843 		return (xdr_u_longlong_t(xdrs,
   4844 		    (u_longlong_t *)&objp->nfs_resop4_u.opcommit.
   4845 		    writeverf));
   4846 	case OP_CREATE:
   4847 		return (xdr_CREATE4res(xdrs, &objp->nfs_resop4_u.opcreate));
   4848 	case OP_DELEGPURGE:
   4849 		return (xdr_int(xdrs,
   4850 		    (int32_t *)&objp->nfs_resop4_u.opdelegpurge.status));
   4851 	case OP_LINK:
   4852 		return (xdr_LINK4res(xdrs, &objp->nfs_resop4_u.oplink));
   4853 	case OP_LOCK:
   4854 		return (xdr_LOCK4res(xdrs, &objp->nfs_resop4_u.oplock));
   4855 	case OP_LOCKT:
   4856 		return (xdr_LOCKT4res(xdrs, &objp->nfs_resop4_u.oplockt));
   4857 	case OP_LOCKU:
   4858 		if (!xdr_int(xdrs,
   4859 		    (int32_t *)&objp->nfs_resop4_u.oplocku.status))
   4860 			return (FALSE);
   4861 		if (objp->nfs_resop4_u.oplocku.status != NFS4_OK)
   4862 			return (TRUE);
   4863 		if (!xdr_u_int(xdrs,
   4864 		    &objp->nfs_resop4_u.oplocku.lock_stateid.seqid))
   4865 			return (FALSE);
   4866 		return (xdr_opaque(xdrs,
   4867 		    objp->nfs_resop4_u.oplocku.lock_stateid.other,
   4868 		    12));
   4869 	case OP_OPENATTR:
   4870 		return (xdr_int(xdrs,
   4871 		    (int32_t *)&objp->nfs_resop4_u.opopenattr.status));
   4872 	case OP_OPEN_CONFIRM:
   4873 		return (xdr_OPEN_CONFIRM4res(xdrs,
   4874 		    &objp->nfs_resop4_u.opopen_confirm));
   4875 	case OP_OPEN_DOWNGRADE:
   4876 		return (xdr_OPEN_DOWNGRADE4res(xdrs,
   4877 		    &objp->nfs_resop4_u.opopen_downgrade));
   4878 	case OP_PUTPUBFH:
   4879 		return (xdr_int(xdrs,
   4880 		    (int32_t *)&objp->nfs_resop4_u.opputpubfh.status));
   4881 	case OP_PUTROOTFH:
   4882 		return (xdr_int(xdrs,
   4883 		    (int32_t *)&objp->nfs_resop4_u.opputrootfh.status));
   4884 	case OP_READLINK:
   4885 		return (xdr_READLINK4res(xdrs, &objp->nfs_resop4_u.opreadlink));
   4886 	case OP_RENAME:
   4887 		return (xdr_RENAME4res(xdrs, &objp->nfs_resop4_u.oprename));
   4888 	case OP_RENEW:
   4889 		return (xdr_int(xdrs,
   4890 		    (int32_t *)&objp->nfs_resop4_u.oprenew.status));
   4891 	case OP_RESTOREFH:
   4892 		return (xdr_int(xdrs,
   4893 		    (int32_t *)&objp->nfs_resop4_u.oprestorefh.status));
   4894 	case OP_SAVEFH:
   4895 		return (xdr_int(xdrs,
   4896 		    (int32_t *)&objp->nfs_resop4_u.opsavefh.status));
   4897 	case OP_SECINFO:
   4898 		if (!xdr_int(xdrs, (int32_t *)&objp->nfs_resop4_u.opsecinfo.
   4899 		    status))
   4900 			return (FALSE);
   4901 		if (objp->nfs_resop4_u.opsecinfo.status != NFS4_OK)
   4902 			return (TRUE);
   4903 		return (xdr_array(xdrs, (char **)&objp->nfs_resop4_u.opsecinfo.
   4904 		    SECINFO4resok_val,
   4905 		    (uint_t *)&objp->nfs_resop4_u.opsecinfo.
   4906 		    SECINFO4resok_len,
   4907 		    ~0, sizeof (secinfo4), (xdrproc_t)xdr_secinfo4));
   4908 	case OP_SETATTR:
   4909 		if (!xdr_int(xdrs, (int32_t *)&objp->nfs_resop4_u.opsetattr.
   4910 		    status))
   4911 			return (FALSE);
   4912 		return (xdr_bitmap4(xdrs,
   4913 		    &objp->nfs_resop4_u.opsetattr.attrsset));
   4914 	case OP_SETCLIENTID:
   4915 		return (xdr_SETCLIENTID4res(xdrs,
   4916 		    &objp->nfs_resop4_u.opsetclientid));
   4917 	case OP_SETCLIENTID_CONFIRM:
   4918 		return (xdr_int(xdrs,
   4919 		    (int32_t *)&objp->nfs_resop4_u.opsetclientid_confirm.
   4920 		    status));
   4921 	case OP_VERIFY:
   4922 		return (xdr_int(xdrs,
   4923 		    (int32_t *)&objp->nfs_resop4_u.opverify.status));
   4924 	case OP_RELEASE_LOCKOWNER:
   4925 		return (xdr_int(xdrs,
   4926 		    (int32_t *)&objp->nfs_resop4_u.oprelease_lockowner.status));
   4927 	case OP_ILLEGAL:
   4928 		return (xdr_int(xdrs,
   4929 		    (int32_t *)&objp->nfs_resop4_u.opillegal.status));
   4930 	}
   4931 	return (FALSE);
   4932 }
   4933 
   4934 bool_t
   4935 xdr_COMPOUND4args_clnt(XDR *xdrs, COMPOUND4args_clnt *objp)
   4936 {
   4937 	static int32_t twelve = 12;
   4938 	static int32_t minorversion = NFS4_MINORVERSION;
   4939 	uint32_t *ctagp;
   4940 	rpc_inline_t *ptr;
   4941 	rdma_chunkinfo_t rci;
   4942 	struct xdr_ops *xops = xdrrdma_xops();
   4943 
   4944 	/*
   4945 	 * XDR_ENCODE only
   4946 	 */
   4947 	if (xdrs->x_op == XDR_FREE)
   4948 		return (TRUE);
   4949 	if (xdrs->x_op == XDR_DECODE)
   4950 		return (FALSE);
   4951 
   4952 	ctagp = (uint32_t *)&nfs4_ctags[objp->ctag].ct_tag;
   4953 
   4954 	if ((ptr = XDR_INLINE(xdrs, 5 * BYTES_PER_XDR_UNIT)) != NULL) {
   4955 		/*
   4956 		 * Efficiently encode fixed length tags, could be longlongs
   4957 		 * but 8 byte XDR alignment not assured
   4958 		 */
   4959 		IXDR_PUT_U_INT32(ptr, 12);
   4960 		IXDR_PUT_U_INT32(ptr, ctagp[0]);
   4961 		IXDR_PUT_U_INT32(ptr, ctagp[1]);
   4962 		IXDR_PUT_U_INT32(ptr, ctagp[2]);
   4963 
   4964 		/*
   4965 		 * Fixed minor version for now
   4966 		 */
   4967 		IXDR_PUT_U_INT32(ptr, NFS4_MINORVERSION);
   4968 	} else {
   4969 		if (!XDR_PUTINT32(xdrs, &twelve))
   4970 			return (FALSE);
   4971 		if (!XDR_PUTINT32(xdrs, (int32_t *)&ctagp[0]))
   4972 			return (FALSE);
   4973 		if (!XDR_PUTINT32(xdrs, (int32_t *)&ctagp[1]))
   4974 			return (FALSE);
   4975 		if (!XDR_PUTINT32(xdrs, (int32_t *)&ctagp[2]))
   4976 			return (FALSE);
   4977 		if (!XDR_PUTINT32(xdrs, (int32_t *)&minorversion))
   4978 			return (FALSE);
   4979 	}
   4980 	if (xdrs->x_ops == &xdrrdma_ops || xdrs->x_ops == xops) {
   4981 		rci.rci_type = RCI_REPLY_CHUNK;
   4982 		rci.rci_len = MAXPATHLEN * 2;
   4983 		XDR_CONTROL(xdrs, XDR_RDMA_ADD_CHUNK, &rci);
   4984 	}
   4985 
   4986 	return (xdr_array(xdrs, (char **)&objp->array,
   4987 	    (uint_t *)&objp->array_len, NFS4_COMPOUND_LIMIT,
   4988 	    sizeof (nfs_argop4), (xdrproc_t)xdr_cnfs_argop4));
   4989 }
   4990 
   4991 bool_t
   4992 xdr_COMPOUND4args_srv(XDR *xdrs, COMPOUND4args *objp)
   4993 {
   4994 	if (!xdr_bytes(xdrs, (char **)&objp->tag.utf8string_val,
   4995 	    (uint_t *)&objp->tag.utf8string_len,
   4996 	    NFS4_MAX_UTF8STRING))
   4997 		return (FALSE);
   4998 	if (!xdr_u_int(xdrs, &objp->minorversion))
   4999 		return (FALSE);
   5000 	if (xdrs->x_op != XDR_FREE)
   5001 		return (xdr_array(xdrs, (char **)&objp->array,
   5002 		    (uint_t *)&objp->array_len, NFS4_COMPOUND_LIMIT,
   5003 		    sizeof (nfs_argop4), (xdrproc_t)xdr_snfs_argop4));
   5004 
   5005 	return (xdr_snfs_argop4_free(xdrs, &objp->array, objp->array_len));
   5006 }
   5007 
   5008 bool_t
   5009 xdr_COMPOUND4res_clnt(XDR *xdrs, COMPOUND4res_clnt *objp)
   5010 {
   5011 	uint32_t len;
   5012 	int32_t *ptr;
   5013 	nfs_argop4 *argop;
   5014 	nfs_resop4 *resop;
   5015 
   5016 	/*
   5017 	 * No XDR_ENCODE
   5018 	 */
   5019 	if (xdrs->x_op == XDR_ENCODE)
   5020 		return (FALSE);
   5021 
   5022 	if (xdrs->x_op != XDR_FREE) {
   5023 		if ((ptr = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT)) != NULL) {
   5024 			objp->status = IXDR_GET_U_INT32(ptr);
   5025 			len = IXDR_GET_U_INT32(ptr);
   5026 		} else {
   5027 			if (!xdr_int(xdrs, (int32_t *)&objp->status))
   5028 				return (FALSE);
   5029 			if (!xdr_u_int(xdrs, (uint32_t *)&len))
   5030 				return (FALSE);
   5031 		}
   5032 		if (len > NFS4_MAX_UTF8STRING)
   5033 			return (FALSE);
   5034 		/*
   5035 		 * Ignore the tag
   5036 		 */
   5037 		if (!XDR_CONTROL(xdrs, XDR_SKIPBYTES, &len))
   5038 			return (FALSE);
   5039 
   5040 		if (!xdr_int(xdrs, (int32_t *)&objp->array_len))
   5041 			return (FALSE);
   5042 
   5043 		if (objp->array_len > objp->argsp->array_len)
   5044 			return (FALSE);
   5045 
   5046 		if (objp->status == NFS_OK &&
   5047 		    objp->array_len != objp->argsp->array_len)
   5048 			return (FALSE);
   5049 
   5050 		/* Alloc the results array */
   5051 		argop = objp->argsp->array;
   5052 		len = objp->array_len * sizeof (nfs_resop4);
   5053 		objp->decode_len = 0;
   5054 		objp->array = resop = kmem_zalloc(len, KM_SLEEP);
   5055 
   5056 		for (len = 0; len < objp->array_len;
   5057 		    len++, resop++, argop++, objp->decode_len++) {
   5058 			if (!xdr_nfs_resop4_clnt(xdrs, resop, argop)) {
   5059 				/*
   5060 				 * Make sure to free anything that may
   5061 				 * have been allocated along the way.
   5062 				 */
   5063 				xdrs->x_op = XDR_FREE;
   5064 				(void) xdr_nfs_resop4_free(xdrs, &objp->array,
   5065 				    objp->array_len,
   5066 				    objp->decode_len);
   5067 				return (FALSE);
   5068 			}
   5069 		}
   5070 		return (TRUE);
   5071 	}
   5072 	return (xdr_nfs_resop4_free(xdrs, &objp->array,
   5073 	    objp->array_len, objp->decode_len));
   5074 }
   5075 
   5076 bool_t
   5077 xdr_COMPOUND4res_srv(XDR *xdrs, COMPOUND4res *objp)
   5078 {
   5079 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   5080 		return (FALSE);
   5081 	if (!xdr_bytes(xdrs, (char **)&objp->tag.utf8string_val,
   5082 	    (uint_t *)&objp->tag.utf8string_len,
   5083 	    NFS4_MAX_UTF8STRING))
   5084 		return (FALSE);
   5085 
   5086 	if (xdrs->x_op != XDR_FREE)
   5087 		return (xdr_array(xdrs, (char **)&objp->array,
   5088 		    (uint_t *)&objp->array_len, NFS4_COMPOUND_LIMIT,
   5089 		    sizeof (nfs_resop4), (xdrproc_t)xdr_snfs_resop4));
   5090 
   5091 	return (xdr_snfs_resop4_free(xdrs, &objp->array,
   5092 	    objp->array_len, objp->array_len));
   5093 }
   5094 
   5095 /*
   5096  * NFS server side callback, initiating the callback request so it
   5097  * is the RPC client. Must convert from server's internal filehandle
   5098  * format to wire format.
   5099  */
   5100 static bool_t
   5101 xdr_snfs_cb_argop4(XDR *xdrs, nfs_cb_argop4 *objp)
   5102 {
   5103 	CB_GETATTR4args *gargs;
   5104 	CB_RECALL4args *rargs;
   5105 
   5106 	ASSERT(xdrs->x_op == XDR_ENCODE);
   5107 
   5108 	if (!XDR_PUTINT32(xdrs, (int32_t *)&objp->argop))
   5109 		return (FALSE);
   5110 
   5111 	switch (objp->argop) {
   5112 	case OP_CB_GETATTR:
   5113 		gargs = &objp->nfs_cb_argop4_u.opcbgetattr;
   5114 
   5115 		if (!xdr_encode_nfs_fh4(xdrs, &gargs->fh))
   5116 			return (FALSE);
   5117 		return (xdr_bitmap4(xdrs, &gargs->attr_request));
   5118 	case OP_CB_RECALL:
   5119 		rargs = &objp->nfs_cb_argop4_u.opcbrecall;
   5120 
   5121 		if (!XDR_PUTINT32(xdrs, (int32_t *)&rargs->stateid.seqid))
   5122 			return (FALSE);
   5123 		if (!xdr_opaque(xdrs, rargs->stateid.other, 12))
   5124 			return (FALSE);
   5125 		if (!XDR_PUTINT32(xdrs, (int32_t *)&rargs->truncate))
   5126 			return (FALSE);
   5127 		return (xdr_encode_nfs_fh4(xdrs, &rargs->fh));
   5128 	case OP_CB_ILLEGAL:
   5129 		return (TRUE);
   5130 	}
   5131 	return (FALSE);
   5132 }
   5133 
   5134 /*
   5135  * NFS client side callback, receiving the callback request so it
   5136  * is the RPC server. Must treat the file handles as opaque.
   5137  */
   5138 static bool_t
   5139 xdr_cnfs_cb_argop4(XDR *xdrs, nfs_cb_argop4 *objp)
   5140 {
   5141 	CB_GETATTR4args *gargs;
   5142 	CB_RECALL4args *rargs;
   5143 
   5144 	ASSERT(xdrs->x_op != XDR_ENCODE);
   5145 
   5146 	if (!xdr_u_int(xdrs, &objp->argop))
   5147 		return (FALSE);
   5148 	switch (objp->argop) {
   5149 	case OP_CB_GETATTR:
   5150 		gargs = &objp->nfs_cb_argop4_u.opcbgetattr;
   5151 
   5152 		if (!xdr_bytes(xdrs, (char **)&gargs->fh.nfs_fh4_val,
   5153 		    (uint_t *)&gargs->fh.nfs_fh4_len, NFS4_FHSIZE))
   5154 			return (FALSE);
   5155 		return (xdr_bitmap4(xdrs, &gargs->attr_request));
   5156 	case OP_CB_RECALL:
   5157 		rargs = &objp->nfs_cb_argop4_u.opcbrecall;
   5158 
   5159 		if (!xdr_u_int(xdrs, &rargs->stateid.seqid))
   5160 			return (FALSE);
   5161 		if (!xdr_opaque(xdrs, rargs->stateid.other, 12))
   5162 			return (FALSE);
   5163 		if (!xdr_bool(xdrs, &rargs->truncate))
   5164 			return (FALSE);
   5165 		return (xdr_bytes(xdrs, (char **)&rargs->fh.nfs_fh4_val,
   5166 		    (uint_t *)&rargs->fh.nfs_fh4_len, NFS4_FHSIZE));
   5167 	case OP_CB_ILLEGAL:
   5168 		return (TRUE);
   5169 	}
   5170 	return (FALSE);
   5171 }
   5172 
   5173 static bool_t
   5174 xdr_nfs_cb_resop4(XDR *xdrs, nfs_cb_resop4 *objp)
   5175 {
   5176 	if (!xdr_u_int(xdrs, &objp->resop))
   5177 		return (FALSE);
   5178 	switch (objp->resop) {
   5179 	case OP_CB_GETATTR:
   5180 		if (!xdr_int(xdrs,
   5181 		    (int32_t *)&objp->nfs_cb_resop4_u.opcbgetattr.
   5182 		    status))
   5183 			return (FALSE);
   5184 		if (objp->nfs_cb_resop4_u.opcbgetattr.status != NFS4_OK)
   5185 			return (TRUE);
   5186 		return (xdr_fattr4(xdrs,
   5187 		    &objp->nfs_cb_resop4_u.opcbgetattr.
   5188 		    obj_attributes));
   5189 	case OP_CB_RECALL:
   5190 		return (xdr_int(xdrs,
   5191 		    (int32_t *)&objp->nfs_cb_resop4_u.opcbrecall.status));
   5192 	case OP_CB_ILLEGAL:
   5193 		return (xdr_int(xdrs,
   5194 		    (int32_t *)&objp->nfs_cb_resop4_u.opcbillegal.status));
   5195 	}
   5196 	return (FALSE);
   5197 }
   5198 
   5199 /*
   5200  * The NFS client side callback, RPC server
   5201  */
   5202 bool_t
   5203 xdr_CB_COMPOUND4args_clnt(XDR *xdrs, CB_COMPOUND4args *objp)
   5204 {
   5205 	if (!xdr_bytes(xdrs, (char **)&objp->tag.utf8string_val,
   5206 	    (uint_t *)&objp->tag.utf8string_len,
   5207 	    NFS4_MAX_UTF8STRING))
   5208 		return (FALSE);
   5209 	if (!xdr_u_int(xdrs, &objp->minorversion))
   5210 		return (FALSE);
   5211 	if (!xdr_u_int(xdrs, &objp->callback_ident))
   5212 		return (FALSE);
   5213 	return (xdr_array(xdrs, (char **)&objp->array,
   5214 	    (uint_t *)&objp->array_len, NFS4_COMPOUND_LIMIT,
   5215 	    sizeof (nfs_cb_argop4), (xdrproc_t)xdr_cnfs_cb_argop4));
   5216 }
   5217 
   5218 /*
   5219  * The NFS server side callback, RPC client
   5220  */
   5221 bool_t
   5222 xdr_CB_COMPOUND4args_srv(XDR *xdrs, CB_COMPOUND4args *objp)
   5223 {
   5224 	if (!xdr_bytes(xdrs, (char **)&objp->tag.utf8string_val,
   5225 	    (uint_t *)&objp->tag.utf8string_len,
   5226 	    NFS4_MAX_UTF8STRING))
   5227 		return (FALSE);
   5228 	if (!xdr_u_int(xdrs, &objp->minorversion))
   5229 		return (FALSE);
   5230 	if (!xdr_u_int(xdrs, &objp->callback_ident))
   5231 		return (FALSE);
   5232 	return (xdr_array(xdrs, (char **)&objp->array,
   5233 	    (uint_t *)&objp->array_len, NFS4_COMPOUND_LIMIT,
   5234 	    sizeof (nfs_cb_argop4), (xdrproc_t)xdr_snfs_cb_argop4));
   5235 }
   5236 
   5237 bool_t
   5238 xdr_CB_COMPOUND4res(XDR *xdrs, CB_COMPOUND4res *objp)
   5239 {
   5240 	if (!xdr_int(xdrs, (int32_t *)&objp->status))
   5241 		return (FALSE);
   5242 	if (!xdr_bytes(xdrs, (char **)&objp->tag.utf8string_val,
   5243 	    (uint_t *)&objp->tag.utf8string_len,
   5244 	    NFS4_MAX_UTF8STRING))
   5245 		return (FALSE);
   5246 	return (xdr_array(xdrs, (char **)&objp->array,
   5247 	    (uint_t *)&objp->array_len, NFS4_COMPOUND_LIMIT,
   5248 	    sizeof (nfs_cb_resop4), (xdrproc_t)xdr_nfs_cb_resop4));
   5249 }
   5250