e3d34903b6
support for NFSv4 as well as NFSv2 and 3. It lives in 3 subdirs under sys/fs: nfs - functions that are common to the client and server nfsclient - a mutation of sys/nfsclient that call generic functions to do RPCs and handle state. As such, it retains the buffer cache handling characteristics and vnode semantics that are found in sys/nfsclient, for the most part. nfsserver - the server. It includes a DRC designed specifically for NFSv4, that is used instead of the generic DRC in sys/rpc. The build glue will be checked in later, so at this point, it consists of 3 new subdirs that should not affect kernel building. Approved by: kib (mentor)
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*-
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* Copyright (c) 2009 Rick Macklem, University of Guelph
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#ifndef _NFS_NFSCL_H
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#define _NFS_NFSCL_H
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/*
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* Extra stuff for a NFSv4 nfsnode.
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* MALLOC'd to the correct length for the name and file handle.
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* n4_data has the file handle, followed by the file name.
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* The macro NFS4NODENAME() returns a pointer to the start of the
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* name.
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*/
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struct nfsv4node {
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u_int16_t n4_fhlen;
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u_int16_t n4_namelen;
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u_int8_t n4_data[1];
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};
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#define NFS4NODENAME(n) (&((n)->n4_data[(n)->n4_fhlen]))
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/*
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* Just a macro to convert the nfscl_reqstart arguments.
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*/
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#define NFSCL_REQSTART(n, p, v) \
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nfscl_reqstart((n), (p), VFSTONFS((v)->v_mount), \
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VTONFS(v)->n_fhp->nfh_fh, VTONFS(v)->n_fhp->nfh_len, NULL)
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/*
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* These two macros convert between a lease duration and renew interval.
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* For now, just make the renew interval 1/2 the lease duration.
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* (They should be inverse operators.)
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*/
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#define NFSCL_RENEW(l) (((l) < 2) ? 1 : ((l) / 2))
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#define NFSCL_LEASE(r) ((r) * 2)
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/*
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* These flag bits are used for the argument to nfscl_fillsattr() to
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* indicate special handling of the attributes.
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*/
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#define NFSSATTR_FULL 0x1
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#define NFSSATTR_SIZE0 0x2
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#define NFSSATTR_SIZENEG1 0x4
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#define NFSSATTR_SIZERDEV 0x8
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#endif /* _NFS_NFSCL_H */
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