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9669bb479a
temporary storage. In the old NFS code it wasn't at all clear if the value of `tl' was used across or after macro calls, but I'm fairly confident that the convention was to keep its use local. Each ex-macro function now uses a local version of this variable, so all of the double-indirection goes away. The only exception to the `local use' rule for `tl' is nfsm_clget(), which is left unchanged by this commit. Reviewed by: peter
204 lines
6.2 KiB
C
204 lines
6.2 KiB
C
/*
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* $FreeBSD$
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*/
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#ifndef _NFSCLIENT_NFSM_SUBS_H_
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#define _NFSCLIENT_NFSM_SUBS_H_
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#include <nfs/nfs_common.h>
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#define nfsv2tov_type(a) nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
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struct ucred;
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struct vnode;
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/*
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* These macros do strange and peculiar things to mbuf chains for
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* the assistance of the nfs code. To attempt to use them for any
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* other purpose will be dangerous. (they make weird assumptions)
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*/
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/*
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* First define what the actual subs. return
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*/
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struct mbuf *nfsm_reqhead(struct vnode *vp, u_long procid, int hsiz);
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struct mbuf *nfsm_rpchead(struct ucred *cr, int nmflag, int procid,
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int auth_type, int auth_len,
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struct mbuf *mrest, int mrest_len,
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struct mbuf **mbp, u_int32_t *xidp);
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#define M_HASCL(m) ((m)->m_flags & M_EXT)
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#define NFSMINOFF(m) \
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do { \
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if (M_HASCL(m)) \
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(m)->m_data = (m)->m_ext.ext_buf; \
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else if ((m)->m_flags & M_PKTHDR) \
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(m)->m_data = (m)->m_pktdat; \
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else \
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(m)->m_data = (m)->m_dat; \
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} while (0)
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#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \
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(((m)->m_flags & M_PKTHDR)?MHLEN:MLEN))
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/*
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* Now for the macros that do the simple stuff and call the functions
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* for the hard stuff.
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* These macros use several vars. declared in nfsm_reqhead and these
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* vars. must not be used elsewhere unless you are careful not to corrupt
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* them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
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* that may be used so long as the value is not expected to retained
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* after a macro.
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* I know, this is kind of dorkey, but it makes the actual op functions
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* fairly clean and deals with the mess caused by the xdr discriminating
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* unions.
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*/
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/* *********************************** */
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/* Request generation phase macros */
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int nfsm_fhtom_xx(struct vnode *v, int v3, struct mbuf **mb,
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caddr_t *bpos);
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void nfsm_v3attrbuild_xx(struct vattr *va, int full, struct mbuf **mb,
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caddr_t *bpos);
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int nfsm_strtom_xx(const char *a, int s, int m, struct mbuf **mb,
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caddr_t *bpos);
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#define nfsm_bcheck(t1, mreq) \
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do { \
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if (t1) { \
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error = t1; \
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m_freem(mreq); \
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goto nfsmout; \
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} \
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} while (0)
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#define nfsm_fhtom(v, v3) \
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do { \
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int32_t t1; \
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t1 = nfsm_fhtom_xx((v), (v3), &mb, &bpos); \
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nfsm_bcheck(t1, mreq); \
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} while (0)
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/* If full is true, set all fields, otherwise just set mode and time fields */
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#define nfsm_v3attrbuild(a, full) \
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nfsm_v3attrbuild_xx(a, full, &mb, &bpos)
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#define nfsm_uiotom(p, s) \
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do { \
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int t1; \
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t1 = nfsm_uiotombuf((p), &mb, (s), &bpos); \
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nfsm_bcheck(t1, mreq); \
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} while (0)
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#define nfsm_strtom(a, s, m) \
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do { \
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int t1; \
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t1 = nfsm_strtom_xx((a), (s), (m), &mb, &bpos); \
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nfsm_bcheck(t1, mreq); \
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} while (0)
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/* *********************************** */
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/* Send the request */
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#define nfsm_request(v, t, p, c) \
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do { \
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error = nfs_request((v), mreq, (t), (p), (c), &mrep, &md, &dpos); \
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if (error != 0) { \
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if (error & NFSERR_RETERR) \
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error &= ~NFSERR_RETERR; \
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else \
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goto nfsmout; \
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} \
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} while (0)
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/* *********************************** */
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/* Reply interpretation phase macros */
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int nfsm_mtofh_xx(struct vnode *d, struct vnode **v, int v3, int *f,
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struct mbuf **md, caddr_t *dpos);
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int nfsm_getfh_xx(nfsfh_t **f, int *s, int v3, struct mbuf **md,
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caddr_t *dpos);
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int nfsm_loadattr_xx(struct vnode **v, struct vattr *va, struct mbuf **md,
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caddr_t *dpos);
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int nfsm_postop_attr_xx(struct vnode **v, int *f, struct mbuf **md,
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caddr_t *dpos);
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int nfsm_wcc_data_xx(struct vnode **v, int *f, struct mbuf **md,
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caddr_t *dpos);
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#define nfsm_mtofh(d, v, v3, f) \
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do { \
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int32_t t1; \
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t1 = nfsm_mtofh_xx((d), &(v), (v3), &(f), &md, &dpos); \
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nfsm_dcheck(t1, mrep); \
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} while (0)
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#define nfsm_getfh(f, s, v3) \
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do { \
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int32_t t1; \
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t1 = nfsm_getfh_xx(&(f), &(s), (v3), &md, &dpos); \
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nfsm_dcheck(t1, mrep); \
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} while (0)
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#define nfsm_loadattr(v, a) \
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do { \
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int32_t t1; \
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t1 = nfsm_loadattr_xx(&v, a, &md, &dpos); \
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nfsm_dcheck(t1, mrep); \
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} while (0)
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#define nfsm_postop_attr(v, f) \
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do { \
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int32_t t1; \
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t1 = nfsm_postop_attr_xx(&v, &f, &md, &dpos); \
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nfsm_dcheck(t1, mrep); \
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} while (0)
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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) \
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do { \
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int32_t t1; \
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t1 = nfsm_wcc_data_xx(&v, &f, &md, &dpos); \
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nfsm_dcheck(t1, mrep); \
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} while (0)
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#endif
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