257 lines
7.5 KiB
C
257 lines
7.5 KiB
C
/* $OpenBSD: nfsm_subs.h,v 1.47 2019/01/18 13:59:18 bluhm Exp $ */
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/* $NetBSD: nfsm_subs.h,v 1.10 1996/03/20 21:59:56 fvdl Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95
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*/
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#ifndef _NFS_NFSM_SUBS_H_
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#define _NFS_NFSM_SUBS_H_
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struct nfsm_info {
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struct mbuf *nmi_mreq;
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struct mbuf *nmi_mrep;
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struct proc *nmi_procp; /* XXX XXX XXX */
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struct ucred *nmi_cred; /* XXX XXX XXX */
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/* Setting up / Tearing down. */
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struct mbuf *nmi_md;
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struct mbuf *nmi_mb;
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caddr_t nmi_dpos;
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int nmi_v3;
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};
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#define nfsm_dissect(a, c, s) { \
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t1 = mtod(info.nmi_md, caddr_t) + info.nmi_md->m_len - \
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info.nmi_dpos; \
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if (t1 >= (s)) { \
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(a) = (c)(info.nmi_dpos); \
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info.nmi_dpos += (s); \
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} else if ((t1 = \
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nfsm_disct(&info.nmi_md, &info.nmi_dpos, (s), t1, \
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&cp2)) != 0) { \
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error = t1; \
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m_freem(info.nmi_mrep); \
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goto nfsmout; \
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} else { \
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(a) = (c)cp2; \
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} \
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}
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#define nfsm_srvpostop_fh(f) { \
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tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED + NFSX_V3FH); \
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*tl++ = nfs_true; \
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*tl++ = txdr_unsigned(NFSX_V3FH); \
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bcopy((f), tl, NFSX_V3FH); \
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}
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#define nfsm_mtofh(d, v, v3, f) { \
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struct nfsnode *ttnp; nfsfh_t *ttfhp; int ttfhsize; \
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if (v3) { \
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nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
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(f) = fxdr_unsigned(int, *tl); \
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} else \
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(f) = 1; \
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if (f) { \
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nfsm_getfh(ttfhp, ttfhsize, (v3)); \
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if ((t1 = nfs_nget((d)->v_mount, ttfhp, ttfhsize, \
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&ttnp)) != 0) { \
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error = t1; \
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m_freem(info.nmi_mrep); \
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goto nfsmout; \
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} \
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(v) = NFSTOV(ttnp); \
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} \
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if (v3) { \
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nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
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if (f) \
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(f) = fxdr_unsigned(int, *tl); \
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else if (fxdr_unsigned(int, *tl)) \
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nfsm_adv(NFSX_V3FATTR); \
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} \
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if (f) \
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nfsm_loadattr((v), NULL); \
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}
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#define nfsm_getfh(f, s, v3) { \
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if (v3) { \
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nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
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if (((s) = fxdr_unsigned(int, *tl)) <= 0 || \
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(s) > NFSX_V3FHMAX) { \
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m_freem(info.nmi_mrep); \
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error = EBADRPC; \
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goto nfsmout; \
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} \
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} else \
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(s) = NFSX_V2FH; \
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nfsm_dissect((f), nfsfh_t *, nfsm_rndup(s)); \
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}
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#define nfsm_loadattr(v, a) { \
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struct vnode *ttvp = (v); \
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if ((t1 = nfs_loadattrcache(&ttvp, &info.nmi_md, \
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&info.nmi_dpos, (a))) != 0) { \
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error = t1; \
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m_freem(info.nmi_mrep); \
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goto nfsmout; \
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} \
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(v) = ttvp; \
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}
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#define nfsm_postop_attr(v, f) { if (info.nmi_mrep != NULL) { \
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struct vnode *ttvp = (v); \
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nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
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if (((f) = fxdr_unsigned(int, *tl)) != 0) { \
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if ((t1 = nfs_loadattrcache(&ttvp, &info.nmi_md, \
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&info.nmi_dpos, NULL)) != 0) { \
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error = t1; \
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(f) = 0; \
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m_freem(info.nmi_mrep); \
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goto nfsmout; \
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} \
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(v) = ttvp; \
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} \
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} }
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/* Used as (f) for nfsm_wcc_data() */
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#define NFSV3_WCCRATTR 0
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#define NFSV3_WCCCHK 1
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#define nfsm_wcc_data(v, f) do { if (info.nmi_mrep != NULL) { \
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struct timespec _mtime; \
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int ttattrf, ttretf = 0; \
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\
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nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
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if (*tl == nfs_true) { \
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nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED); \
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fxdr_nfsv3time(tl + 2, &_mtime); \
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if (f) { \
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ttretf = timespeccmp(&VTONFS(v)->n_mtime, \
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&_mtime, !=); \
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} \
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} \
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nfsm_postop_attr((v), ttattrf); \
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if (f) { \
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(f) = ttretf; \
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} else { \
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(f) = ttattrf; \
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} \
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} } while (0)
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#define nfsm_strsiz(s, m) { \
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nfsm_dissect(tl, u_int32_t *,NFSX_UNSIGNED); \
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if (((s) = fxdr_unsigned(int32_t, *tl)) < 0 || (s) > (m)) { \
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m_freem(info.nmi_mrep); \
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error = EBADRPC; \
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goto nfsmout; \
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} \
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}
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#define nfsm_srvnamesiz(s) { \
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nfsm_dissect(tl, u_int32_t *,NFSX_UNSIGNED); \
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if (((s) = fxdr_unsigned(int32_t, *tl)) > NFS_MAXNAMLEN) \
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error = NFSERR_NAMETOL; \
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if ((s) <= 0) \
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error = EBADRPC; \
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if (error) \
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nfsm_reply(0); \
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}
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#define nfsm_mtouio(p, s) \
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if ((s) > 0 && \
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(t1 = nfsm_mbuftouio(&info.nmi_md, (p), (s), \
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&info.nmi_dpos)) != 0) { \
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error = t1; \
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m_freem(info.nmi_mrep); \
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goto nfsmout; \
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}
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#define nfsm_rndup(a) (((a)+3)&(~0x3))
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#define nfsm_strtom(a, s, m) \
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if ((s) > (m)) { \
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m_freem(info.nmi_mreq); \
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error = ENAMETOOLONG; \
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goto nfsmout; \
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} \
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nfsm_strtombuf(&info.nmi_mb, (a), (s))
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#define nfsm_reply(s) { \
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nfsd->nd_repstat = error; \
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if (error && !(nfsd->nd_flag & ND_NFSV3)) \
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(void) nfs_rephead(0, nfsd, slp, error, \
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&info.nmi_mreq, &info.nmi_mb); \
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else \
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(void) nfs_rephead((s), nfsd, slp, error, \
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&info.nmi_mreq, &info.nmi_mb); \
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if (info.nmi_mrep != NULL) { \
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m_freem(info.nmi_mrep); \
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info.nmi_mrep = NULL; \
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} \
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*mrq = info.nmi_mreq; \
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if (error && (!(nfsd->nd_flag & ND_NFSV3) || error == EBADRPC)) \
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return(0); \
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}
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#define nfsm_adv(s) { \
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t1 = mtod(info.nmi_md, caddr_t) + info.nmi_md->m_len - \
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info.nmi_dpos; \
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if (t1 >= (s)) { \
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info.nmi_dpos += (s); \
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} else if ((t1 = nfs_adv(&info.nmi_md, &info.nmi_dpos, \
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(s), t1)) != 0) { \
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error = t1; \
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m_freem(info.nmi_mrep); \
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goto nfsmout; \
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} \
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}
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#define nfsm_srvmtofh(f) { \
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if (nfsd->nd_flag & ND_NFSV3) { \
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nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \
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if (fxdr_unsigned(int, *tl) != NFSX_V3FH) { \
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error = EBADRPC; \
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nfsm_reply(0); \
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} \
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} \
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nfsm_dissect(tl, u_int32_t *, NFSX_V3FH); \
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bcopy(tl, (f), NFSX_V3FH); \
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if ((nfsd->nd_flag & ND_NFSV3) == 0) \
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nfsm_adv(NFSX_V2FH - NFSX_V3FH); \
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}
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#endif
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