-#define nfsm_build(a,c,s) \
- { if ((s) > mbuf_trailingspace(mb)) { \
- int __nfsm_error; \
- __nfsm_error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2); \
- if (__nfsm_error) \
- panic("nfsm_build mbuf_get error %d", __nfsm_error); \
- if ((s) > mbuf_maxlen(mb2)) \
- panic("nfsm_build size error"); \
- __nfsm_error = mbuf_setnext(mb, mb2); \
- if (__nfsm_error) \
- panic("nfsm_build mbuf_setnext error %d", __nfsm_error); \
- mb = mb2; \
- bpos = mbuf_data(mb); \
- } \
- (a) = (c)(bpos); \
- mbuf_setlen(mb, (mbuf_len(mb) + (s))); \
- bpos += (s); }
-
-#define nfsm_dissect(a, c, s) \
- { t1 = ((caddr_t)mbuf_data(md)) + mbuf_len(md) - dpos; \
- if (t1 >= (s)) { \
- (a) = (c)(dpos); \
- dpos += (s); \
- } else if ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2))) { \
- error = t1; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } else { \
- (a) = (c)cp2; \
- } }
-
-#define nfsm_fhtom(v, v3) \
- { if (v3) { \
- t2 = nfsm_rndup(VTONFS(v)->n_fhsize) + NFSX_UNSIGNED; \
- if (t2 <= mbuf_trailingspace(mb)) { \
- nfsm_build(tl, u_long *, t2); \
- *tl++ = txdr_unsigned(VTONFS(v)->n_fhsize); \
- *(tl + ((t2>>2) - 2)) = 0; \
- bcopy((caddr_t)VTONFS(v)->n_fhp,(caddr_t)tl, \
- VTONFS(v)->n_fhsize); \
- } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, \
- (caddr_t)VTONFS(v)->n_fhp, VTONFS(v)->n_fhsize))) { \
- error = t2; \
- mbuf_freem(mreq); \
- goto nfsmout; \
- } \
- } else { \
- nfsm_build(cp, caddr_t, NFSX_V2FH); \
- bcopy((caddr_t)VTONFS(v)->n_fhp, cp, NFSX_V2FH); \
- } }
-
-#define nfsm_srvfhtom(f, v3) \
- { if (v3) { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED + (unsigned)(f)->nfh_len); \
- *tl++ = txdr_unsigned((f)->nfh_len); \
- bcopy((caddr_t)&(f)->nfh_xh, (caddr_t)tl, (f)->nfh_len); \
- } else { \
- nfsm_build(cp, caddr_t, NFSX_V2FH); \
- bcopy((caddr_t)&(f)->nfh_xh, cp, NFSX_V2FH); \
- } }
-
-#define nfsm_srvpostop_fh(f) \
- { nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED + (unsigned)(f)->nfh_len); \
- *tl++ = nfs_true; \
- *tl++ = txdr_unsigned((f)->nfh_len); \
- bcopy((caddr_t)&(f)->nfh_xh, (caddr_t)tl, (f)->nfh_len); \
- }
-
-#define nfsm_mtofh(d, cnp, v, v3, xp, f) \
- { \
- struct nfsnode *ttnp; u_char *ttfhp = NULL; \
- int ttfhsize = 0, ttgotfh = 1, ttgotattr = 1, ttgotnode = 0; \
- struct nfs_vattr ttvattr; \
- (v) = NULL; \
- /* XXX would be nice to not bail to nfsmout on error */ \
- if (v3) { /* check for file handle */ \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- ttgotfh = fxdr_unsigned(int, *tl); \
- } \
- if (ttgotfh) { \
- /* get file handle */ \
- nfsm_getfh(ttfhp, ttfhsize, (v3)); \
- } \
- if (v3) { /* check for attributes */ \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- ttgotattr = fxdr_unsigned(int, *tl); \
- } \
- /* get attributes */ \
- if (ttgotattr) { \
- if (!ttgotfh) { \
- nfsm_adv(NFSX_V3FATTR); \
- } else { \
- nfsm_attr_get(v3, &ttvattr); \
- } \
- } else if (ttgotfh) { \
- /* We need valid attributes in order */ \
- /* to call nfs_nget/vnode_create(). */ \
- t1 = nfs_getattr_no_vnode(vnode_mount(d), \
- ttfhp, ttfhsize, cred, p, &ttvattr, xp); \
- if (t1) \
- ttgotattr = 0; \
- } \
- if (ttgotfh && ttgotattr) { \
- int ttngflags = NG_MAKEENTRY; \
- if ((t1 = nfs_nget(vnode_mount(d), d, cnp, ttfhp, ttfhsize, \
- &ttvattr, xp, ttngflags, &ttnp))) { \
- error = t1; \
- ttgotnode = 0; \
- } else { \
- ttgotnode = 1; \
- (v) = NFSTOV(ttnp); \
- } \
- } \
- (f) = ttgotnode; \
- }
-
-#define nfsm_getfh(f, s, v3) \
- { if (v3) { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (((s) = fxdr_unsigned(int, *tl)) <= 0 || \
- (s) > NFSX_V3FHMAX) { \
- mbuf_freem(mrep); \
- error = EBADRPC; \
- goto nfsmout; \
- } \
- } else { \
- (s) = NFSX_V2FH; \
- } \
- nfsm_dissect((f), u_char *, nfsm_rndup(s)); }
-
-#define nfsm_loadattr(v, v3, a, x) \
- { struct nfs_vattr ttvattr; \
- if ((t1 = nfs_parsefattr(&md, &dpos, v3, &ttvattr))) { \
- error = t1; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } \
- if ((t1 = nfs_loadattrcache(VTONFS(v), &ttvattr, (x), 0))) { \
- error = t1; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } \
- if (a) { \
- bcopy(&ttvattr, (a), sizeof(ttvattr)); \
- } \
- }
-
-#define nfsm_attr_get(v3, vap) \
- { \
- if ((t1 = nfs_parsefattr(&md, &dpos, v3, vap))) { \
- error = t1; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } \
- }
-
-#define nfsm_postop_attr_get(v3, f, vap) \
- { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (((f) = fxdr_unsigned(int, *tl))) { \
- if ((t1 = nfs_parsefattr(&md, &dpos, v3, vap))) { \
- error = t1; \
- (f) = 0; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } \
- } }
-
-#define nfsm_postop_attr_update(v, v3, f, x) \
- { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (((f) = fxdr_unsigned(int, *tl))) { \
- struct nfs_vattr ttvattr; \
- if ((t1 = nfs_parsefattr(&md, &dpos, v3, &ttvattr))) { \
- error = t1; \
- (f) = 0; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } \
- if ((t1 = nfs_loadattrcache(VTONFS(v), &ttvattr, (x), 1))) { \
- error = t1; \
- (f) = 0; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } \
- if (*(x) == 0) \
- (f) = 0; \
- } }
-
-#define nfsm_wcc_data(v, premtime, newpostattr, x) \
- { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (*tl == nfs_true) { \
- nfsm_dissect(tl, u_long *, 6 * NFSX_UNSIGNED); \
- (premtime)->tv_sec = fxdr_unsigned(time_t, *(tl + 2)); \
- (premtime)->tv_nsec = fxdr_unsigned(time_t, *(tl + 3)); \
- } else { \
- (premtime)->tv_sec = 0; \
- (premtime)->tv_nsec = 0; \
- } \
- nfsm_postop_attr_update((v), 1, (newpostattr), (x)); \
- }
-
-#define nfsm_v3sattr(vap) \
- {\
- struct timeval now; \
- if (VATTR_IS_ACTIVE(vap, va_mode)) { \
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); \
- *tl++ = nfs_true; \
- *tl = txdr_unsigned(vap->va_mode); \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = nfs_false; \
- } \
- if (VATTR_IS_ACTIVE(vap, va_uid)) { \
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); \
- *tl++ = nfs_true; \
- *tl = txdr_unsigned(vap->va_uid); \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = nfs_false; \
- } \
- if (VATTR_IS_ACTIVE(vap, va_gid)) { \
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); \
- *tl++ = nfs_true; \
- *tl = txdr_unsigned(vap->va_gid); \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = nfs_false; \
- } \
- if (VATTR_IS_ACTIVE(vap, va_data_size)) { \
- nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); \
- *tl++ = nfs_true; \
- txdr_hyper(&vap->va_data_size, tl); \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = nfs_false; \
- } \
- microtime(&now); \
- if (VATTR_IS_ACTIVE(vap, va_access_time)) { \
- if (vap->va_access_time.tv_sec != now.tv_sec) { \
- nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); \
- *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \
- txdr_nfsv3time(&vap->va_access_time, tl); \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); \
- } \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); \
- } \
- if (VATTR_IS_ACTIVE(vap, va_modify_time)) { \
- if (vap->va_modify_time.tv_sec != now.tv_sec) { \
- nfsm_build(tl, u_long *, 3 * NFSX_UNSIGNED); \
- *tl++ = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \
- txdr_nfsv3time(&vap->va_modify_time, tl); \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); \
- } \
- } else { \
- nfsm_build(tl, u_long *, NFSX_UNSIGNED); \
- *tl = txdr_unsigned(NFSV3SATTRTIME_DONTCHANGE); \
- } \
- }
-
-#define nfsm_strsiz(s,m,v3) \
- { nfsm_dissect(tl,u_long *,NFSX_UNSIGNED); \
- (s) = fxdr_unsigned(long,*tl); \
- if (!(v3) && ((s) > (m))) { \
- mbuf_freem(mrep); \
- error = EBADRPC; \
- goto nfsmout; \
- } }
-
-#define nfsm_srvstrsiz(s,m) \
- { nfsm_dissect(tl,u_long *,NFSX_UNSIGNED); \
- if (((s) = fxdr_unsigned(long,*tl)) > (m) || (s) <= 0) { \
- error = EBADRPC; \
- nfsm_reply(0); \
- } }
-
-#define nfsm_srvnamesiz(s,v3) \
- { nfsm_dissect(tl,u_long *,NFSX_UNSIGNED); \
- (s) = fxdr_unsigned(long,*tl); \
- if (!(v3) && ((s) > NFS_MAXNAMLEN)) \
- error = NFSERR_NAMETOL; \
- if ((s) <= 0) \
- error = EBADRPC; \
- if (error) \
- nfsm_reply(0); \
- }
-
-#define nfsm_mtouio(p,s) \
- if ((s) > 0 && \
- (t1 = nfsm_mbuftouio(&md,(p),(s),&dpos))) { \
- error = t1; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- }
-
-#define nfsm_uiotom(p,s) \
- if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos))) { \
- error = t1; \
- mbuf_freem(mreq); \
- goto nfsmout; \
- }
-
-#define nfsm_reqhead(s) \
- error = nfsm_reqh((s), &bpos, &mreq); \
- mb = mreq;
-
-#define nfsm_reqdone mbuf_freem(mrep); \
- nfsmout:
-
-#define nfsm_rndup(a) (((a)+3)&(~0x3))
-
-#define nfsm_request(v, t, p, c, x) \
- if ((error = nfs_request((v), vnode_mount(v), mreq, (t), (p), \
- (c), &mrep, &md, &dpos, (x)))) { \
- if (error & NFSERR_RETERR) \
- error &= ~NFSERR_RETERR; \
- else \
- goto nfsmout; \
- }
-
-#define nfsm_strtom(a,s,m,v3) \
- if (!(v3) && ((s) > (m))) { \
- mbuf_freem(mreq); \
- error = ENAMETOOLONG; \
- goto nfsmout; \
- } \
- t2 = nfsm_rndup(s)+NFSX_UNSIGNED; \
- if (t2 <= mbuf_trailingspace(mb)) { \
- nfsm_build(tl,u_long *,t2); \
- *tl++ = txdr_unsigned(s); \
- *(tl+((t2>>2)-2)) = 0; \
- bcopy((caddr_t)(a), (caddr_t)tl, (s)); \
- } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s)))) { \
- error = t2; \
- mbuf_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)) \
- nfs_rephead(0, nfsd, slp, error, mrq, &mb, &bpos); \
- else \
- nfs_rephead((s), nfsd, slp, error, mrq, &mb, &bpos); \
- mbuf_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)) \
- nfs_rephead(0, nfsd, slp, error, &mreq, &mb, &bpos); \
- else \
- nfs_rephead((s), nfsd, slp, error, &mreq, &mb, &bpos); \
- }
-
-#define nfsm_adv(s) \
- { t1 = ((caddr_t)mbuf_data(md)) + mbuf_len(md) - dpos; \
- if (t1 >= (s)) { \
- dpos += (s); \
- } else if ((t1 = nfs_adv(&md, &dpos, (s), t1))) { \
- error = t1; \
- mbuf_freem(mrep); \
- goto nfsmout; \
- } }
-
-#define nfsm_srvmtofh(f) \
- { \
- if (nfsd->nd_flag & ND_NFSV3) { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- (f)->nfh_len = fxdr_unsigned(int, *tl); \
- if (((f)->nfh_len < (int)sizeof(struct nfs_exphandle)) || \
- ((f)->nfh_len > NFSX_V3FHMAX)) { \
- error = EBADRPC; \
- nfsm_reply(0); \
- } \
- } else { \
- (f)->nfh_len = NFSX_V2FH; \
- } \
- nfsm_dissect(tl, u_long *, (f)->nfh_len); \
- bcopy((caddr_t)tl, (caddr_t)&(f)->nfh_xh, (f)->nfh_len); \
- }
-
-#define nfsm_clget \
- if (bp >= be) { \
- int __nfsm_error, __nfsm_len; \
- if (mp == mb) \
- mbuf_setlen(mp, mbuf_len(mp) + bp - bpos); \
- mp = NULL; \
- __nfsm_error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mp); \
- if (__nfsm_error) \
- panic("nfsm_clget: mbuf_mclget error %d", __nfsm_error); \
- __nfsm_len = mbuf_maxlen(mp); \
- mbuf_setlen(mp, __nfsm_len); \
- __nfsm_error = mbuf_setnext(mp2, mp); \
- if (__nfsm_error) \
- panic("nfsm_clget: mbuf_setnext error %d", __nfsm_error); \
- mp2 = mp; \
- bp = mbuf_data(mp); \
- be = bp + __nfsm_len; \
- } \
- tl = (u_long *)bp
-
-#define nfsm_srv_vattr_init(vap, v3) \
- { \
- VATTR_INIT(vap); \
- VATTR_WANTED((vap), va_type); \
- VATTR_WANTED((vap), va_mode); \
- VATTR_WANTED((vap), va_nlink); \
- VATTR_WANTED((vap), va_uid); \
- VATTR_WANTED((vap), va_gid); \
- VATTR_WANTED((vap), va_data_size); \
- VATTR_WANTED((vap), va_data_alloc); \
- VATTR_WANTED((vap), va_rdev); \
- VATTR_WANTED((vap), va_fsid); \
- VATTR_WANTED((vap), va_fileid); \
- VATTR_WANTED((vap), va_access_time); \
- VATTR_WANTED((vap), va_modify_time); \
- VATTR_WANTED((vap), va_change_time); \
- if (!v3) VATTR_WANTED((vap), va_iosize); \
- }
-
-#define nfsm_srv_pre_vattr_init(vap, v3) \
- { \
- VATTR_INIT(vap); \
- VATTR_WANTED((vap), va_data_size); \
- VATTR_WANTED((vap), va_modify_time); \
- VATTR_WANTED((vap), va_change_time); \
- }
-
-#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) \
- { \
- struct timespec now; \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (*tl == nfs_true) { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- VATTR_SET(a, va_mode, nfstov_mode(*tl)); \
- } \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (*tl == nfs_true) { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- VATTR_SET(a, va_uid, fxdr_unsigned(uid_t, *tl)); \
- } \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (*tl == nfs_true) { \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- VATTR_SET(a, va_gid, fxdr_unsigned(gid_t, *tl)); \
- } \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- if (*tl == nfs_true) { \
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); \
- fxdr_hyper(tl, &(a)->va_data_size); \
- VATTR_SET_ACTIVE(a, va_data_size); \
- } \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- nanotime(&now); \
- switch (fxdr_unsigned(int, *tl)) { \
- case NFSV3SATTRTIME_TOCLIENT: \
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); \
- fxdr_nfsv3time(tl, &(a)->va_access_time); \
- VATTR_SET_ACTIVE(a, va_access_time); \
- break; \
- case NFSV3SATTRTIME_TOSERVER: \
- VATTR_SET(a, va_access_time, now); \
- break; \
- }; \
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
- switch (fxdr_unsigned(int, *tl)) { \
- case NFSV3SATTRTIME_TOCLIENT: \
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); \
- fxdr_nfsv3time(tl, &(a)->va_modify_time); \
- VATTR_SET_ACTIVE(a, va_modify_time); \
- break; \
- case NFSV3SATTRTIME_TOSERVER: \
- VATTR_SET(a, va_modify_time, now); \
- break; \
- }; }
+/* prepare an mbuf chain for dissection starting with the given mbuf */
+#define nfsm_chain_dissect_init(E, NMC, H) \
+ do { \
+ if (!(H)) { \
+ (E) = EINVAL; \
+ break; \
+ } \
+ (NMC)->nmc_mcur = (NMC)->nmc_mhead = (H); \
+ (NMC)->nmc_ptr = mbuf_data(H); \
+ (NMC)->nmc_left = mbuf_len(H); \
+ } while (0)
+
+/* skip a number of bytes in an mbuf chain */
+#define nfsm_chain_adv(E, NMC, LEN) \
+ do { \
+ if (E) break; \
+ if ((NMC)->nmc_left >= (uint32_t)(LEN)) { \
+ (NMC)->nmc_left -= (LEN); \
+ (NMC)->nmc_ptr += (LEN); \
+ } else { \
+ (E) = nfsm_chain_advance((NMC), (LEN)); \
+ } \
+ } while (0)
+
+/* get a 32bit value from an mbuf chain */
+#define nfsm_chain_get_32(E, NMC, LVAL) \
+ do { \
+ uint32_t __tmp32, *__tmpptr; \
+ if (E) break; \
+ if ((NMC)->nmc_left >= NFSX_UNSIGNED) { \
+ __tmpptr = (uint32_t*)(NMC)->nmc_ptr; \
+ (NMC)->nmc_left -= NFSX_UNSIGNED; \
+ (NMC)->nmc_ptr += NFSX_UNSIGNED; \
+ } else { \
+ __tmpptr = &__tmp32; \
+ (E) = nfsm_chain_get_opaque_f((NMC), NFSX_UNSIGNED, (u_char*)__tmpptr); \
+ if (E) break; \
+ } \
+ (LVAL) = fxdr_unsigned(uint32_t, *__tmpptr); \
+ } while (0)
+
+/* get a 64bit value from an mbuf chain */
+#define nfsm_chain_get_64(E, NMC, LVAL) \
+ do { \
+ uint64_t __tmp64, *__tmpptr; \
+ if (E) break; \
+ if ((NMC)->nmc_left >= 2 * NFSX_UNSIGNED) { \
+ __tmpptr = (uint64_t*)(NMC)->nmc_ptr; \
+ (NMC)->nmc_left -= 2 * NFSX_UNSIGNED; \
+ (NMC)->nmc_ptr += 2 * NFSX_UNSIGNED; \
+ } else { \
+ __tmpptr = &__tmp64; \
+ (E) = nfsm_chain_get_opaque_f((NMC), 2 * NFSX_UNSIGNED, (u_char*)__tmpptr); \
+ if (E) break; \
+ } \
+ fxdr_hyper(__tmpptr, &(LVAL)); \
+ } while (0)
+
+/* get a pointer to the next consecutive bytes in an mbuf chain */
+#define nfsm_chain_get_opaque_pointer(E, NMC, LEN, PTR) \
+ do { \
+ uint32_t rndlen; \
+ if (E) break; \
+ rndlen = nfsm_rndup(LEN); \
+ if (rndlen < (LEN)) { \
+ (E) = EBADRPC; \
+ break; \
+ } \
+ if ((NMC)->nmc_left >= rndlen) { \
+ (PTR) = (void*)(NMC)->nmc_ptr; \
+ (NMC)->nmc_left -= rndlen; \
+ (NMC)->nmc_ptr += rndlen; \
+ } else { \
+ (E) = nfsm_chain_get_opaque_pointer_f((NMC), (LEN), (u_char**)&(PTR)); \
+ } \
+ } while (0)
+
+/* copy the next consecutive bytes of opaque data from an mbuf chain */
+#define nfsm_chain_get_opaque(E, NMC, LEN, PTR) \
+ do { \
+ uint32_t rndlen; \
+ if (E) break; \
+ rndlen = nfsm_rndup(LEN); \
+ if (rndlen < (LEN)) { \
+ (E) = EBADRPC; \
+ break; \
+ } \
+ if ((NMC)->nmc_left >= rndlen) { \
+ u_char *__tmpptr = (u_char*)(NMC)->nmc_ptr; \
+ (NMC)->nmc_left -= rndlen; \
+ (NMC)->nmc_ptr += rndlen; \
+ bcopy(__tmpptr, (PTR), (LEN)); \
+ } else { \
+ (E) = nfsm_chain_get_opaque_f((NMC), (LEN), (u_char*)(PTR)); \
+ } \
+ } while (0)
+
+/* get the size of and a pointer to a file handle in an mbuf chain */
+#define nfsm_chain_get_fh_ptr(E, NMC, VERS, FHP, FHSIZE) \
+ do { \
+ if ((VERS) != NFS_VER2) { \
+ nfsm_chain_get_32((E), (NMC), (FHSIZE)); \
+ if (E) break; \
+ if ((FHSIZE) > NFS_MAX_FH_SIZE) \
+ (E) = EBADRPC; \
+ } else \
+ (FHSIZE) = NFSX_V2FH;\
+ if ((E) == 0) \
+ nfsm_chain_get_opaque_pointer((E), (NMC), (FHSIZE), (FHP));\
+ } while (0)
+
+/* get the size of and data for a file handle in an mbuf chain */
+#define nfsm_chain_get_fh(E, NMC, VERS, FHP) \
+ do { \
+ if ((VERS) != NFS_VER2) { \
+ nfsm_chain_get_32((E), (NMC), (FHP)->fh_len); \
+ if ((FHP)->fh_len > sizeof((FHP)->fh_data)) \
+ (E) = EBADRPC; \
+ } else \
+ (FHP)->fh_len = NFSX_V2FH;\
+ if ((E) == 0) \
+ nfsm_chain_get_opaque((E), (NMC), (uint32_t)(FHP)->fh_len, (FHP)->fh_data);\
+ else \
+ (FHP)->fh_len = 0;\
+ } while (0)
+
+/* get an NFS v2 or v3 time from an mbuf chain */
+#define nfsm_chain_get_time(E, NMC, VERS, TSEC, TNSEC) \
+ do { \
+ nfsm_chain_get_32((E), (NMC), (TSEC)); \
+ nfsm_chain_get_32((E), (NMC), (TNSEC)); \
+ if ((E) || ((VERS) != NFS_VER2)) break; \
+ if ((uint32_t)(TNSEC) == 0xffffffff) \
+ (TNSEC) = 0; \
+ else \
+ (TNSEC) *= 1000; \
+ } while (0)
+
+/* get postop attributes from an mbuf chain */
+#define nfsm_chain_postop_attr_get(NMP, E, NMC, F, VAP) \
+ do { \
+ (F) = 0; \
+ if ((E) || !(NMC)->nmc_mhead) break; \
+ nfsm_chain_get_32((E), (NMC), (F)); \
+ if ((E) || !(F)) break; \
+ if (((E) = nfs_parsefattr((NMP), (NMC), NFS_VER3, (VAP)))) \
+ (F) = 0; \
+ } while (0)
+
+/* update a node's attribute cache with postop attributes from an mbuf chain */
+/* (F returns whether the attributes were updated or not) */
+#define nfsm_chain_postop_attr_update_flag(E, NMC, NP, F, X) \
+ do { \
+ struct nfs_vattr ttvattr; \
+ nfsm_chain_postop_attr_get(NFSTONMP(NP), (E), (NMC), (F), &ttvattr); \
+ if ((E) || !(F)) break; \
+ if (((E) = nfs_loadattrcache((NP), &ttvattr, (X), 1))) { \
+ (F) = 0; \
+ break; \
+ } \
+ if (*(X) == 0) \
+ (F) = 0; \
+ } while (0)
+
+/* update a node's attribute cache with postop attributes from an mbuf chain */
+#define nfsm_chain_postop_attr_update(E, NMC, NP, X) \
+ do { \
+ int __dummy_flag = 0; \
+ nfsm_chain_postop_attr_update_flag((E), (NMC), (NP), __dummy_flag, (X)); \
+ } while (0)
+
+/* get and process NFSv3 WCC data from an mbuf chain */
+#define nfsm_chain_get_wcc_data(E, NMC, NP, PREMTIME, NEWPOSTATTR, X) \
+ do { \
+ if (E) break; \
+ (E) = nfsm_chain_get_wcc_data_f((NMC), (NP), (PREMTIME), (NEWPOSTATTR), (X)); \
+ } while (0)
+
+#if CONFIG_NFS4
+/* separate v4 variant for loading attrs that only runs when NFSv4 is set */
+#define __nfsm_chain_loadattr_v4(E, NMC, VERS, X, VATTR) \
+ do { \
+ (E) = nfs4_parsefattr((NMC), NULL, (VATTR), NULL, NULL, NULL); \
+ } while (0)
+#else
+#define __nfsm_chain_loadattr_v4(E, NMC, VERS, X, VATTR) \
+ do { \
+ break; \
+ } while (0)
+#endif
+
+/* update a node's attribute cache with attributes from an mbuf chain */
+#define nfsm_chain_loadattr(E, NMC, NP, VERS, X) \
+ do { \
+ struct nfs_vattr ttvattr; \
+ if (E) break; \
+ if ((VERS) == NFS_VER4) { \
+ __nfsm_chain_loadattr_v4((E), (NMC), (VERS), (X), &ttvattr); \
+ } else { \
+ (E) = nfs_parsefattr(NFSTONMP(NP), (NMC), (VERS), &ttvattr); \
+ } \
+ if (!(E) && (NP)) \
+ (E) = nfs_loadattrcache((NP), &ttvattr, (X), 0); \
+ NVATTR_CLEANUP(&ttvattr); \
+ } while (0)
+
+/* get NFSv4 attr bitmap */
+#define nfsm_chain_get_bitmap(E, NMC, B, LEN) \
+ do { \
+ uint32_t __len = 0, __i; \
+ nfsm_chain_get_32((E), (NMC), __len); \
+ if (E) break; \
+ for (__i=0; __i < MIN(__len, (LEN)); __i++) \
+ nfsm_chain_get_32((E), (NMC), (B)[__i]); \
+ if (E) break; \
+ for (; __i < __len; __i++) \
+ nfsm_chain_adv((E), (NMC), NFSX_UNSIGNED); \
+ for (; __i < (LEN); __i++) \
+ (B)[__i] = 0; \
+ (LEN) = __len; \
+ } while (0)
+
+/* get an NFSv4 "stateid" structure from an mbuf chain */
+#define nfsm_chain_get_stateid(E, NMC, SID) \
+ do { \
+ nfsm_chain_get_32((E), (NMC), (SID)->seqid); \
+ nfsm_chain_get_32((E), (NMC), (SID)->other[0]); \
+ nfsm_chain_get_32((E), (NMC), (SID)->other[1]); \
+ nfsm_chain_get_32((E), (NMC), (SID)->other[2]); \
+ } while (0)
+
+#define nfsm_chain_skip_tag(E, NMC) \
+ do { \
+ uint32_t __val = 0; \
+ nfsm_chain_get_32((E), (NMC), __val); \
+ nfsm_chain_adv((E), (NMC), nfsm_rndup(__val)); \
+ } while (0)
+
+#define nfsm_chain_op_check(E, NMC, OP) \
+ do { \
+ uint32_t __val = 0; \
+ nfsm_chain_get_32((E), (NMC), __val); \
+ /* [sigh] some implementations return the "illegal" op for unsupported ops */ \
+ nfsm_assert((E), ((__val == (OP)) || (__val == NFS_OP_ILLEGAL)), EBADRPC); \
+ nfsm_chain_get_32((E), (NMC), __val); \
+ nfsm_assert((E), (__val == NFS_OK), __val); \
+ } while (0)
+
+#define nfsm_chain_check_change_info(E, NMC, DNP) \
+ do { \
+ uint64_t __ci_before, __ci_after; \
+ uint32_t __ci_atomic = 0; \
+ nfsm_chain_get_32((E), (NMC), __ci_atomic); \
+ nfsm_chain_get_64((E), (NMC), __ci_before); \
+ nfsm_chain_get_64((E), (NMC), __ci_after); \
+ if ((E) || !(DNP)) break; \
+ if (__ci_atomic && (__ci_before == (DNP)->n_ncchange)) { \
+ (DNP)->n_ncchange = __ci_after; \
+ } else { \
+ cache_purge(NFSTOV(DNP)); \
+ (DNP)->n_ncgen++; \
+ } \
+ } while (0)
projects / apple / xnu.git / blobdiff