/*      $NetBSD: nfsm_subs.h,v 1.59 2024/12/07 02:05:55 riastradh Exp $ */

/*
 * Copyright (c) 1989, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rick Macklem at The University of Guelph.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95
 */

#ifndef _NFS_NFSM_SUBS_H_
#define _NFS_NFSM_SUBS_H_


/*
 * These macros do strange and peculiar things to mbuf chains for
 * the assistance of the nfs code. To attempt to use them for any
 * other purpose will be dangerous. (they make weird assumptions)
 */

/*
 * First define what the actual subs. return
 */

#define M_HASCL(m)      ((m)->m_flags & M_EXT)
#define NFSMADV(m, s)   (m)->m_data += (s)
#define NFSMSIZ(m)      ((M_HASCL(m)) ? (m)->m_ext.ext_size : \
                                (((m)->m_flags & M_PKTHDR) ? MHLEN : MLEN))

/*
 * NFSv2 can only handle signed 32bit quantities and some clients
 * get confused by larger than 16bit block sizes. Limit values
 * for better compatibility.
 */
#define NFS_V2CLAMP32(x) ((x) > INT32_MAX ? INT32_MAX : (int32_t)(x))
#define NFS_V2CLAMP16(x) ((x) > INT16_MAX ? INT16_MAX : (int32_t)(x))

/*
 * Now for the macros that do the simple stuff and call the functions
 * for the hard stuff.
 * These macros use several vars. declared in nfsm_reqhead and these
 * vars. must not be used elsewhere unless you are careful not to corrupt
 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
 * that may be used so long as the value is not expected to retained
 * after a macro.
 * I know, this is kind of dorkey, but it makes the actual op functions
 * fairly clean and deals with the mess caused by the xdr discriminating
 * unions.
 */

#define nfsm_build(a,c,s) \
                { if ((s) > M_TRAILINGSPACE(mb)) { \
                        struct mbuf *mb2; \
                        mb2 = m_get(M_WAIT, MT_DATA); \
                        MCLAIM(mb2, &nfs_mowner); \
                        if ((s) > MLEN) \
                                panic("build > MLEN"); \
                        mb->m_next = mb2; \
                        mb = mb2; \
                        mb->m_len = 0; \
                        bpos = mtod(mb, char *); \
                } \
                (a) = (c)(bpos); \
                mb->m_len += (s); \
                bpos += (s); }

#define nfsm_aligned(p) ALIGNED_POINTER(p,u_int32_t)

#define nfsm_dissect(a, c, s) \
                { t1 = mtod(md, char *) + md->m_len-dpos; \
                if (t1 >= (s) && nfsm_aligned(dpos)) { \
                        (a) = (c)(dpos); \
                        dpos += (s); \
                } else if ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \
                        error = t1; \
                        m_freem(mrep); \
                        goto nfsmout; \
                } else { \
                        (a) = (c)cp2; \
                } }

#define nfsm_fhtom(n, v3) \
              { if (v3) { \
                        t2 = nfsm_rndup((n)->n_fhsize) + NFSX_UNSIGNED; \
                        if (t2 <= M_TRAILINGSPACE(mb)) { \
                                nfsm_build(tl, u_int32_t *, t2); \
                                *tl++ = txdr_unsigned((n)->n_fhsize); \
                                *(tl + ((t2>>2) - 2)) = 0; \
                                memcpy(tl,(n)->n_fhp, (n)->n_fhsize); \
                        } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, \
                                (void *)(n)->n_fhp, (n)->n_fhsize)) != 0) { \
                                error = t2; \
                                m_freem(mreq); \
                                goto nfsmout; \
                        } \
                } else { \
                        nfsm_build(cp, void *, NFSX_V2FH); \
                        memcpy(cp, (n)->n_fhp, NFSX_V2FH); \
                } }

#define nfsm_srvfhtom(f, v3) \
                { if (v3) { \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + \
                            NFSRVFH_SIZE(f)); \
                        *tl++ = txdr_unsigned(NFSRVFH_SIZE(f)); \
                        memcpy(tl, NFSRVFH_DATA(f), NFSRVFH_SIZE(f)); \
                } else { \
                        KASSERT(NFSRVFH_SIZE(f) == NFSX_V2FH); \
                        nfsm_build(cp, void *, NFSX_V2FH); \
                        memcpy(cp, NFSRVFH_DATA(f), NFSX_V2FH); \
                } }

#define nfsm_srvpostop_fh(f) \
                { nfsm_build(tl, u_int32_t *, \
                    2 * NFSX_UNSIGNED + NFSRVFH_SIZE(f)); \
                *tl++ = nfs_true; \
                *tl++ = txdr_unsigned(NFSRVFH_SIZE(f)); \
                memcpy(tl, NFSRVFH_DATA(f), NFSRVFH_SIZE(f)); \
                }

/*
 * nfsm_mtofh: dissect a "resulted obj" part of create-like operations
 * like mkdir.
 *
 * for nfsv3, dissect post_op_fh3 and following post_op_attr.
 * for nfsv2, dissect fhandle and following fattr.
 *
 * d: (IN) the vnode of the parent directory.
 * v: (OUT) the corresponding vnode (we allocate one if needed)
 * v3: (IN) true for nfsv3.
 * f: (OUT) true if we got valid filehandle.  always true for nfsv2.
 */

#define nfsm_mtofh(d, v, v3, f) \
                { struct nfsnode *ttnp; nfsfh_t *ttfhp; int ttfhsize; \
                int hasattr = 0; \
                if (v3) { \
                        nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                        (f) = fxdr_unsigned(int, *tl); \
                } else { \
                        (f) = 1; \
                        hasattr = 1; \
                } \
                if (f) { \
                        nfsm_getfh(ttfhp, ttfhsize, (v3)); \
                        if ((t1 = nfs_nget((d)->v_mount, ttfhp, ttfhsize, \
                                &ttnp)) != 0) { \
                                error = t1; \
                                m_freem(mrep); \
                                goto nfsmout; \
                        } \
                        (v) = NFSTOV(ttnp); \
                } \
                if (v3) { \
                        nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                        if (f) \
                                hasattr = fxdr_unsigned(int, *tl); \
                        else if (fxdr_unsigned(int, *tl)) \
                                nfsm_adv(NFSX_V3FATTR); \
                } \
                if (f && hasattr) \
                        nfsm_loadattr((v), (struct vattr *)0, 0); \
                }

/*
 * nfsm_getfh: dissect a filehandle.
 *
 * f: (OUT) a filehandle.
 * s: (OUT) size of the filehandle in bytes.
 * v3: (IN) true if nfsv3.
 */

#define nfsm_getfh(f, s, v3) \
                { if (v3) { \
                        nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                        if (((s) = fxdr_unsigned(int, *tl)) <= 0 || \
                                (s) > NFSX_V3FHMAX) { \
                                m_freem(mrep); \
                                error = EBADRPC; \
                                goto nfsmout; \
                        } \
                } else \
                        (s) = NFSX_V2FH; \
                nfsm_dissect((f), nfsfh_t *, nfsm_rndup(s)); }

#define nfsm_loadattr(v, a, flags) \
                { struct vnode *ttvp = (v); \
                if ((t1 = nfsm_loadattrcache(&ttvp, &md, &dpos, (a), (flags))) \
                    != 0) { \
                        error = t1; \
                        m_freem(mrep); \
                        goto nfsmout; \
                } \
                (v) = ttvp; }

/*
 * nfsm_postop_attr: process nfsv3 post_op_attr
 *
 * dissect post_op_attr.  if we got a one,
 * call nfsm_loadattrcache to update attribute cache.
 *
 * v: (IN/OUT) the corresponding vnode
 * f: (OUT) true if we got valid attribute
 * flags: (IN) flags for nfsm_loadattrcache
 */

#define nfsm_postop_attr(v, f, flags) \
                { struct vnode *ttvp = (v); \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                if (((f) = fxdr_unsigned(int, *tl)) != 0) { \
                        if ((t1 = nfsm_loadattrcache(&ttvp, &md, &dpos, \
                                (struct vattr *)0, (flags))) != 0) { \
                                error = t1; \
                                (f) = 0; \
                                m_freem(mrep); \
                                goto nfsmout; \
                        } \
                        (v) = ttvp; \
                } }

/*
 * nfsm_wcc_data: process nfsv3 wcc_data
 *
 * dissect pre_op_attr and then let nfsm_postop_attr dissect post_op_attr.
 *
 * v: (IN/OUT) the corresponding vnode
 * f: (IN/OUT)
 *      NFSV3_WCCRATTR  return true if we got valid post_op_attr.
 *      NFSV3_WCCCHK    return true if pre_op_attr's mtime is the same
 *                      as our n_mtime.  (ie. our cache isn't stale.)
 * flags: (IN) flags for nfsm_loadattrcache
 * docheck: (IN) true if timestamp change is expected
 */

/* Used as (f) for nfsm_wcc_data() */
#define NFSV3_WCCRATTR  0
#define NFSV3_WCCCHK    1

#define nfsm_wcc_data(v, f, flags, docheck) \
                { int ttattrf, ttretf = 0, renewctime = 0, renewnctime = 0; \
                struct timespec ctime, mtime; \
                struct nfsnode *nfsp = VTONFS(v); \
                bool haspreopattr = false; \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                if (*tl == nfs_true) { \
                        haspreopattr = true; \
                        nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED); \
                        fxdr_nfsv3time(tl + 2, &mtime); \
                        fxdr_nfsv3time(tl + 4, &ctime); \
                        if (nfsp->n_ctime == ctime.tv_sec) \
                                renewctime = 1; \
                        if ((v)->v_type == VDIR) { \
                                if (timespeccmp(&nfsp->n_nctime, &ctime, ==)) \
                                        renewnctime = 1; \
                        } \
                        if (f) { \
                                ttretf = timespeccmp(&nfsp->n_mtime, &mtime, ==);\
                        } \
                } \
                nfsm_postop_attr((v), ttattrf, (flags)); \
                nfsp = VTONFS(v); \
                if (ttattrf) { \
                        if (haspreopattr && \
                            nfs_check_wccdata(nfsp, &ctime, &mtime, (docheck))) \
                                renewctime = renewnctime = ttretf = 0; \
                        if (renewctime) \
                                nfsp->n_ctime = nfsp->n_vattr->va_ctime.tv_sec; \
                        if (renewnctime) \
                                nfsp->n_nctime = nfsp->n_vattr->va_ctime; \
                } \
                if (f) { \
                        (f) = ttretf; \
                } else { \
                        (f) = ttattrf; \
                } }

/* If full is true, set all fields, otherwise just set mode and time fields */
#define nfsm_v3attrbuild(a, full)                                               \
                { if ((a)->va_mode != (mode_t)VNOVAL) {                         \
                        nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);         \
                        *tl++ = nfs_true;                                       \
                        *tl = txdr_unsigned((a)->va_mode);                      \
                } else {                                                        \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);             \
                        *tl = nfs_false;                                        \
                }                                                               \
                if ((full) && (a)->va_uid != (uid_t)VNOVAL) {                   \
                        nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);         \
                        *tl++ = nfs_true;                                       \
                        *tl = txdr_unsigned((a)->va_uid);                       \
                } else {                                                        \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);             \
                        *tl = nfs_false;                                        \
                }                                                               \
                if ((full) && (a)->va_gid != (gid_t)VNOVAL) {                   \
                        nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED);         \
                        *tl++ = nfs_true;                                       \
                        *tl = txdr_unsigned((a)->va_gid);                       \
                } else {                                                        \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);             \
                        *tl = nfs_false;                                        \
                }                                                               \
                if ((full) && (a)->va_size != VNOVAL) {                         \
                        nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED);         \
                        *tl++ = nfs_true;                                       \
                        txdr_hyper((a)->va_size, tl);                           \
                } else {                                                        \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);             \
                        *tl = nfs_false;                                        \
                }                                                               \
                if ((a)->va_atime.tv_sec != VNOVAL) {                           \
                        if ((a)->va_atime.tv_sec != time_second) {              \
                                nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED); \
                                *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \
                                txdr_nfsv3time(&(a)->va_atime, tl);             \
                        } else {                                                \
                                nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);     \
                                *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);   \
                        }                                                       \
                } else {                                                        \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);             \
                        *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);         \
                }                                                               \
                if ((a)->va_mtime.tv_sec != VNOVAL) {                           \
                        if ((a)->va_mtime.tv_sec != time_second) {              \
                                nfsm_build(tl, u_int32_t *, 3 * NFSX_UNSIGNED); \
                                *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \
                                txdr_nfsv3time(&(a)->va_mtime, tl);             \
                        } else {                                                \
                                nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);     \
                                *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER);   \
                        }                                                       \
                } else {                                                        \
                        nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED);             \
                        *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE);         \
                }                                                               \
                }


#define nfsm_strsiz(s,m) \
                { nfsm_dissect(tl,uint32_t *,NFSX_UNSIGNED); \
                if ((uint32_t)((s) = fxdr_unsigned(uint32_t,*tl)) > (m)) { \
                        m_freem(mrep); \
                        error = EBADRPC; \
                        goto nfsmout; \
                } }

#define nfsm_srvnamesiz(s) \
                { nfsm_dissect(tl,uint32_t *,NFSX_UNSIGNED); \
                if ((uint32_t)((s) = fxdr_unsigned(uint32_t,*tl)) > \
                    NFS_MAXNAMLEN) \
                        error = NFSERR_NAMETOL; \
                if (error) \
                        nfsm_reply(0); \
                }

#define nfsm_mtouio(p,s) \
                if ((s) > 0 && \
                   (t1 = nfsm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \
                        error = t1; \
                        m_freem(mrep); \
                        goto nfsmout; \
                }

#define nfsm_uiotom(p,s) \
                if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos)) != 0) { \
                        error = t1; \
                        m_freem(mreq); \
                        goto nfsmout; \
                }

#define nfsm_reqhead(n,a,s) \
                mb = mreq = nfsm_reqh((n),(a),(s),&bpos)

#define nfsm_reqdone    m_freem(mrep); \
                nfsmout:

#define nfsm_rndup(a)   (((a)+3)&(~0x3))
#define nfsm_padlen(a)  (nfsm_rndup(a) - (a))

#define nfsm_request1(v, t, p, c, rexmitp)      \
                if ((error = nfs_request((v), mreq, (t), (p), \
                   (c), &mrep, &md, &dpos, (rexmitp))) != 0) { \
                        if (error & NFSERR_RETERR) \
                                error &= ~NFSERR_RETERR; \
                        else \
                                goto nfsmout; \
                }

#define nfsm_request(v, t, p, c)        nfsm_request1((v), (t), (p), (c), NULL)

#define nfsm_strtom(a,s,m) \
                if ((s) > (m)) { \
                        m_freem(mreq); \
                        error = ENAMETOOLONG; \
                        goto nfsmout; \
                } \
                t2 = nfsm_rndup(s)+NFSX_UNSIGNED; \
                if (t2 <= M_TRAILINGSPACE(mb)) { \
                        nfsm_build(tl,u_int32_t *,t2); \
                        *tl++ = txdr_unsigned(s); \
                        *(tl+((t2>>2)-2)) = 0; \
                        memcpy(tl, (const char *)(a), (s)); \
                } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s))) != 0) { \
                        error = t2; \
                        m_freem(mreq); \
                        goto nfsmout; \
                }

#define nfsm_srvdone \
                nfsmout: \
                return(error)

#define nfsm_reply(s) \
                { \
                nfsd->nd_repstat = error; \
                if (error && !(nfsd->nd_flag & ND_NFSV3)) \
                   (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \
                        mrq, &mb, &bpos); \
                else \
                   (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \
                        mrq, &mb, &bpos); \
                m_freem(mrep); \
                mrep = NULL; \
                mreq = *mrq; \
                if (error && (!(nfsd->nd_flag & ND_NFSV3) || \
                        error == EBADRPC)) {\
                        error = 0; \
                        goto nfsmout; \
                        } \
                }

#define nfsm_writereply(s, v3) \
                { \
                nfsd->nd_repstat = error; \
                if (error && !(v3)) \
                   (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \
                        &mreq, &mb, &bpos); \
                else \
                   (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \
                        &mreq, &mb, &bpos); \
                }

#define nfsm_adv(s) \
                { t1 = mtod(md, char *) + md->m_len - dpos; \
                if (t1 >= (s)) { \
                        dpos += (s); \
                } else if ((t1 = nfs_adv(&md, &dpos, (s), t1)) != 0) { \
                        error = t1; \
                        m_freem(mrep); \
                        goto nfsmout; \
                } }

#define nfsm_srvmtofh(nsfh) \
        { uint32_t fhlen = NFSX_V3FH; \
                if (nfsd->nd_flag & ND_NFSV3) { \
                        nfsm_dissect(tl, uint32_t *, NFSX_UNSIGNED); \
                        fhlen = fxdr_unsigned(uint32_t, *tl); \
                        CTASSERT(NFSX_V3FHMAX <= FHANDLE_SIZE_MAX); \
                        if (fhlen > NFSX_V3FHMAX || \
                            (fhlen < FHANDLE_SIZE_MIN && fhlen > 0)) { \
                                error = EBADRPC; \
                                nfsm_reply(0); \
                        } \
                } else { \
                        CTASSERT(NFSX_V2FH >= FHANDLE_SIZE_MIN); \
                        fhlen = NFSX_V2FH; \
                } \
                (nsfh)->nsfh_size = fhlen; \
                if (fhlen != 0) { \
                        KASSERT(fhlen >= FHANDLE_SIZE_MIN); \
                        KASSERT(fhlen <= FHANDLE_SIZE_MAX); \
                        nfsm_dissect(tl, u_int32_t *, fhlen); \
                        memcpy(NFSRVFH_DATA(nsfh), tl, fhlen); \
                } \
        }

#define nfsm_clget \
                if (bp >= be) { \
                        if (mp == mb) \
                                mp->m_len += bp-bpos; \
                        mp = m_get(M_WAIT, MT_DATA); \
                        MCLAIM(mp, &nfs_mowner); \
                        m_clget(mp, M_WAIT); \
                        mp->m_len = NFSMSIZ(mp); \
                        mp2->m_next = mp; \
                        mp2 = mp; \
                        bp = mtod(mp, char *); \
                        be = bp+mp->m_len; \
                } \
                tl = (u_int32_t *)bp

#define nfsm_srvfillattr(a, f) \
                nfsm_srvfattr(nfsd, (a), (f))

#define nfsm_srvwcc_data(br, b, ar, a) \
                nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos)

#define nfsm_srvpostop_attr(r, a) \
                nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos)

#define nfsm_srvsattr(a) \
                { \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                if (*tl == nfs_true) { \
                        nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                        (a)->va_mode = nfstov_mode(*tl); \
                } \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                if (*tl == nfs_true) { \
                        nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                        (a)->va_uid = fxdr_unsigned(uid_t, *tl); \
                } \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                if (*tl == nfs_true) { \
                        nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                        (a)->va_gid = fxdr_unsigned(gid_t, *tl); \
                } \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                if (*tl == nfs_true) { \
                        nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \
                        (a)->va_size = fxdr_hyper(tl); \
                } \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                switch (fxdr_unsigned(int, *tl)) { \
                case NFSV3SATTRTIME_TOCLIENT: \
                        nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \
                        fxdr_nfsv3time(tl, &(a)->va_atime); \
                        break; \
                case NFSV3SATTRTIME_TOSERVER: \
                        getnanotime(&(a)->va_atime); \
                        (a)->va_vaflags |= VA_UTIMES_NULL; \
                        break; \
                }; \
                nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
                switch (fxdr_unsigned(int, *tl)) { \
                case NFSV3SATTRTIME_TOCLIENT: \
                        nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \
                        fxdr_nfsv3time(tl, &(a)->va_mtime); \
                        (a)->va_vaflags &= ~VA_UTIMES_NULL; \
                        break; \
                case NFSV3SATTRTIME_TOSERVER: \
                        getnanotime(&(a)->va_mtime); \
                        (a)->va_vaflags |= VA_UTIMES_NULL; \
                        break; \
                }; }

#endif  /* _NFS_NFSM_SUBS_H_ */