eeccf3813d
upcalls which do RPC header parsing and match up the reply with the request. NFS calls now sleep on the nfsreq structure. This enables us to eliminate the NFS recvlock. Submitted by: Mohan Srinivasan mohans at yahoo-inc dot com
214 lines
6.3 KiB
C
214 lines
6.3 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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* 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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sigset_t oldset; \
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nfs_set_sigmask(p, &oldset); \
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error = nfs_request((v), mreq, (t), (p), (c), &mrep, &md, &dpos); \
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nfs_restore_sigmask(p, &oldset); \
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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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#define nfsm_request_mnt(n, t, p, c) \
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do { \
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error = nfs4_request_mnt((n), 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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