diff options
author | peter <peter@FreeBSD.org> | 2001-09-18 23:32:09 +0000 |
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committer | peter <peter@FreeBSD.org> | 2001-09-18 23:32:09 +0000 |
commit | 85182a8d785d189f1e845c7d66810e3977ac161b (patch) | |
tree | 626c88f61c1e52e9cd18eaec61b54aaaee5d3bfc /sys/nfs/nfs_common.h | |
parent | abe9cf18de01077e00cd2ee3d47363af647e65e4 (diff) | |
download | FreeBSD-src-85182a8d785d189f1e845c7d66810e3977ac161b.zip FreeBSD-src-85182a8d785d189f1e845c7d66810e3977ac161b.tar.gz |
Cleanup and split of nfs client and server code.
This builds on the top of several repo-copies.
Diffstat (limited to 'sys/nfs/nfs_common.h')
-rw-r--r-- | sys/nfs/nfs_common.h | 563 |
1 files changed, 61 insertions, 502 deletions
diff --git a/sys/nfs/nfs_common.h b/sys/nfs/nfs_common.h index d58ef15..825ab35 100644 --- a/sys/nfs/nfs_common.h +++ b/sys/nfs/nfs_common.h @@ -38,527 +38,86 @@ */ -#ifndef _NFS_NFSM_SUBS_H_ -#define _NFS_NFSM_SUBS_H_ +#ifndef _NFS_NFS_COMMON_H_ +#define _NFS_NFS_COMMON_H_ -struct ucred; -struct vnode; +extern enum vtype nv3tov_type[]; +extern nfstype nfsv3_type[]; -/* - * 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) - */ +#define vtonfsv2_mode(t, m) \ + txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : MAKEIMODE((t), (m))) -/* - * First define what the actual subs. return - */ -struct mbuf *nfsm_reqh __P((struct vnode *vp, u_long procid, int hsiz, - caddr_t *bposp)); -struct mbuf *nfsm_rpchead __P((struct ucred *cr, int nmflag, int procid, - int auth_type, int auth_len, char *auth_str, - int verf_len, char *verf_str, - struct mbuf *mrest, int mrest_len, - struct mbuf **mbp, u_int32_t *xidp)); +#define nfsv3tov_type(a) nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7] +#define vtonfsv3_type(a) txdr_unsigned(nfsv3_type[((int32_t)(a))]) -#define M_HASCL(m) ((m)->m_flags & M_EXT) -#define NFSMINOFF(m) \ - do { \ - if (M_HASCL(m)) \ - (m)->m_data = (m)->m_ext.ext_buf; \ - else if ((m)->m_flags & M_PKTHDR) \ - (m)->m_data = (m)->m_pktdat; \ - else \ - (m)->m_data = (m)->m_dat; \ - } while (0) -#define NFSMADV(m, s) \ +#define NFSMADV(m, s) \ do { \ (m)->m_data += (s); \ } while (0) -#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ - (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) - -/* - * 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) \ - do { \ - if ((s) > M_TRAILINGSPACE(mb)) { \ - MGET(mb2, M_TRYWAIT, MT_DATA); \ - if ((s) > MLEN) \ - panic("build > MLEN"); \ - mb->m_next = mb2; \ - mb = mb2; \ - mb->m_len = 0; \ - bpos = mtod(mb, caddr_t); \ - } \ - (a) = (c)(bpos); \ - mb->m_len += (s); \ - bpos += (s); \ - } while (0) - -#define nfsm_dissect(a, c, s) \ - do { \ - t1 = mtod(md, caddr_t)+md->m_len-dpos; \ - if (t1 >= (s)) { \ - (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; \ - } \ - } while (0) - -#define nfsm_fhtom(v, v3) \ - do { \ - if (v3) { \ - t2 = nfsm_rndup(VTONFS(v)->n_fhsize) + NFSX_UNSIGNED; \ - if (t2 <= M_TRAILINGSPACE(mb)) { \ - nfsm_build(tl, u_int32_t *, 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)) != 0) { \ - error = t2; \ - m_freem(mreq); \ - goto nfsmout; \ - } \ - } else { \ - nfsm_build(cp, caddr_t, NFSX_V2FH); \ - bcopy((caddr_t)VTONFS(v)->n_fhp, cp, NFSX_V2FH); \ - } \ - } while (0) - -#define nfsm_srvfhtom(f, v3) \ - do { \ - if (v3) { \ - nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FH);\ - *tl++ = txdr_unsigned(NFSX_V3FH); \ - bcopy((caddr_t)(f), (caddr_t)tl, NFSX_V3FH); \ - } else { \ - nfsm_build(cp, caddr_t, NFSX_V2FH); \ - bcopy((caddr_t)(f), cp, NFSX_V2FH); \ - } \ - } while (0) - -#define nfsm_srvpostop_fh(f) \ - do { \ - nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED + NFSX_V3FH); \ - *tl++ = nfs_true; \ - *tl++ = txdr_unsigned(NFSX_V3FH); \ - bcopy((caddr_t)(f), (caddr_t)tl, NFSX_V3FH); \ - } while (0) - -#define nfsm_mtofh(d, v, v3, f) \ - do { \ - struct nfsnode *ttnp; nfsfh_t *ttfhp; int ttfhsize; \ - if (v3) { \ - nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ - (f) = fxdr_unsigned(int, *tl); \ - } else \ - (f) = 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) \ - (f) = fxdr_unsigned(int, *tl); \ - else if (fxdr_unsigned(int, *tl)) \ - nfsm_adv(NFSX_V3FATTR); \ - } \ - if (f) \ - nfsm_loadattr((v), (struct vattr *)0); \ - } while (0) - -#define nfsm_getfh(f, s, v3) \ - do { \ - 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)); \ - } while (0) - -#define nfsm_loadattr(v, a) \ - do { \ - struct vnode *ttvp = (v); \ - if ((t1 = nfs_loadattrcache(&ttvp, &md, &dpos, (a), 0)) != 0) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } \ - (v) = ttvp; \ - } while (0) -#define nfsm_postop_attr(v, f) \ - do { \ - struct vnode *ttvp = (v); \ - nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ - if (((f) = fxdr_unsigned(int, *tl)) != 0) { \ - if ((t1 = nfs_loadattrcache(&ttvp, &md, &dpos, \ - (struct vattr *)0, 1)) != 0) { \ - error = t1; \ - (f) = 0; \ - m_freem(mrep); \ - goto nfsmout; \ - } \ - (v) = ttvp; \ - } \ - } while (0) +int nfs_adv(struct mbuf **, caddr_t *, int, int); +void nfsm_build_xx(void **a, int s, struct mbuf **mb, caddr_t *bpos); +int nfsm_dissect_xx(void **a, int s, struct mbuf **md, caddr_t *dpos); +int nfsm_strsiz_xx(int *s, int m, u_int32_t **tl, struct mbuf **mb, + caddr_t *bpos); +int nfsm_adv_xx(int s, u_int32_t **tl, struct mbuf **md, caddr_t *dpos); +u_quad_t nfs_curusec(void); +int nfsm_disct(struct mbuf **, caddr_t *, int, int, caddr_t *); -/* Used as (f) for nfsm_wcc_data() */ -#define NFSV3_WCCRATTR 0 -#define NFSV3_WCCCHK 1 +#define nfsm_build(a, c, s) \ +do { \ + nfsm_build_xx((void **)&(a), (s), &mb, &bpos); \ +} while (0) -#define nfsm_wcc_data(v, f) \ - do { \ - int ttattrf, ttretf = 0; \ - nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ - if (*tl == nfs_true) { \ - nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED); \ - if (f) \ - ttretf = (VTONFS(v)->n_mtime == \ - fxdr_unsigned(u_int32_t, *(tl + 2))); \ - } \ - nfsm_postop_attr((v), ttattrf); \ - if (f) { \ - (f) = ttretf; \ - } else { \ - (f) = ttattrf; \ - } \ - } while (0) -/* If full is true, set all fields, otherwise just set mode and time fields */ -#define nfsm_v3attrbuild(a, full) \ - do { \ - 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); \ - } \ - } while (0) - +/* XXX 'c' arg (type) is not used */ +#define nfsm_dissect(a, c, s) \ +do { \ + int t1; \ + t1 = nfsm_dissect_xx((void **)&(a), (s), &md, &dpos); \ + if (t1) { \ + error = t1; \ + m_freem(mrep); \ + mrep = NULL; \ + goto nfsmout; \ + } \ +} while (0) #define nfsm_strsiz(s,m) \ - do { \ - nfsm_dissect(tl,u_int32_t *,NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(int32_t,*tl)) > (m)) { \ - m_freem(mrep); \ - error = EBADRPC; \ - goto nfsmout; \ - } \ - } while (0) - -#define nfsm_srvstrsiz(s,m) \ - do { \ - nfsm_dissect(tl,u_int32_t *,NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(int32_t,*tl)) > (m) || (s) <= 0) { \ - error = EBADRPC; \ - nfsm_reply(0); \ - } \ - } while (0) - -#define nfsm_srvnamesiz(s) \ - do { \ - nfsm_dissect(tl,u_int32_t *,NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(int32_t,*tl)) > NFS_MAXNAMLEN) \ - error = NFSERR_NAMETOL; \ - if ((s) <= 0) \ - error = EBADRPC; \ - if (error) \ - nfsm_reply(0); \ - } while (0) +do { \ + int t1; \ + t1 = nfsm_strsiz_xx(&(s), (m), &tl, &md, &dpos); \ + if (t1) { \ + error = t1; \ + m_freem(mrep); \ + mrep = NULL; \ + goto nfsmout; \ + } \ +} while(0) #define nfsm_mtouio(p,s) \ - do {\ - if ((s) > 0 && \ - (t1 = nfsm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } \ - } while (0) - -#define nfsm_uiotom(p,s) \ - do { \ - if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos)) != 0) { \ - error = t1; \ - m_freem(mreq); \ - goto nfsmout; \ - } \ - } while (0) - -#define nfsm_reqhead(v,a,s) \ - do { \ - mb = mreq = nfsm_reqh((v),(a),(s),&bpos); \ - } while (0) - -#define nfsm_reqdone \ - do { \ +do {\ + int32_t t1; \ + if ((s) > 0 && (t1 = nfsm_mbuftouio(&md, (p), (s), &dpos)) != 0) { \ + error = t1; \ m_freem(mrep); \ - nfsmout: \ - } while (0) + mrep = NULL; \ + goto nfsmout; \ + } \ +} while (0) #define nfsm_rndup(a) (((a)+3)&(~0x3)) -#define nfsm_request(v, t, p, c) \ - do { \ - if ((error = nfs_request((v), mreq, (t), (p), \ - (c), &mrep, &md, &dpos)) != 0) { \ - if (error & NFSERR_RETERR) \ - error &= ~NFSERR_RETERR; \ - else \ - goto nfsmout; \ - } \ - } while (0) - -#define nfsm_strtom(a,s,m) \ - do {\ - 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; \ - bcopy((const char *)(a), (caddr_t)tl, (s)); \ - } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s))) != 0) { \ - error = t2; \ - m_freem(mreq); \ - goto nfsmout; \ - } \ - } while (0) - -#define nfsm_srvdone \ - do { \ - nfsmout: \ - return (error); \ - } while (0) - -#define nfsm_reply(s) \ - do { \ - 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); \ - if (mrep != NULL) { \ - m_freem(mrep); \ - mrep = NULL; \ - } \ - mreq = *mrq; \ - if (error && (!(nfsd->nd_flag & ND_NFSV3) || \ - error == EBADRPC)) { \ - error = 0; \ - goto nfsmout; \ - } \ - } while (0) - -#define nfsm_writereply(s, v3) \ - do { \ - 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); \ - } while (0) - #define nfsm_adv(s) \ - do { \ - t1 = mtod(md, caddr_t)+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; \ - } \ - } while (0) - -#define nfsm_srvmtofh(f) \ - do { \ - int fhlen; \ - if (nfsd->nd_flag & ND_NFSV3) { \ - nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ - fhlen = fxdr_unsigned(int, *tl); \ - if (fhlen != 0 && fhlen != NFSX_V3FH) { \ - error = EBADRPC; \ - nfsm_reply(0); \ - } \ - } else { \ - fhlen = NFSX_V2FH; \ - } \ - if (fhlen != 0) { \ - nfsm_dissect(tl, u_int32_t *, fhlen); \ - bcopy((caddr_t)tl, (caddr_t)(f), fhlen); \ - } else {\ - bzero((caddr_t)(f), NFSX_V3FH); \ - } \ - } while (0) - -#define nfsm_clget \ - do { \ - if (bp >= be) { \ - if (mp == mb) \ - mp->m_len += bp-bpos; \ - MGET(mp, M_TRYWAIT, MT_DATA); \ - MCLGET(mp, M_TRYWAIT); \ - mp->m_len = NFSMSIZ(mp); \ - mp2->m_next = mp; \ - mp2 = mp; \ - bp = mtod(mp, caddr_t); \ - be = bp+mp->m_len; \ - } \ - tl = (u_int32_t *)bp; \ - } while (0) - -#define nfsm_srvfillattr(a, f) \ - do { \ - nfsm_srvfattr(nfsd, (a), (f)); \ - } while (0) - -#define nfsm_srvwcc_data(br, b, ar, a) \ - do { \ - nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos); \ - } while (0) - -#define nfsm_srvpostop_attr(r, a) \ - do { \ - nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos); \ - } while (0) - -#define nfsm_srvsattr(a) \ - do { \ - 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); \ - 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); \ - break; \ - case NFSV3SATTRTIME_TOSERVER: \ - getnanotime(&(a)->va_mtime); \ - break; \ - } \ - } while (0) +do { \ + int t1; \ + t1 = nfsm_adv_xx((s), &tl, &md, &dpos); \ + if (t1) { \ + error = t1; \ + m_freem(mrep); \ + mrep = NULL; \ + goto nfsmout; \ + } \ +} while (0) #endif |