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author | rmacklem <rmacklem@FreeBSD.org> | 2009-05-04 15:23:58 +0000 |
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committer | rmacklem <rmacklem@FreeBSD.org> | 2009-05-04 15:23:58 +0000 |
commit | e3d34903b6fb9cb09f7e616bde59d97341958fa2 (patch) | |
tree | 0246ff14527b554e60f1c9212be00ee8c1128197 /sys/fs/nfs/nfscl.h | |
parent | fb2908c8ff440e0985013b83071bd8dfecb11371 (diff) | |
download | FreeBSD-src-e3d34903b6fb9cb09f7e616bde59d97341958fa2.zip FreeBSD-src-e3d34903b6fb9cb09f7e616bde59d97341958fa2.tar.gz |
Add the experimental nfs subtree to the kernel, that includes
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)
Diffstat (limited to 'sys/fs/nfs/nfscl.h')
-rw-r--r-- | sys/fs/nfs/nfscl.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sys/fs/nfs/nfscl.h b/sys/fs/nfs/nfscl.h new file mode 100644 index 0000000..1c459ad --- /dev/null +++ b/sys/fs/nfs/nfscl.h @@ -0,0 +1,71 @@ +/*- + * Copyright (c) 2009 Rick Macklem, University of Guelph + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _NFS_NFSCL_H +#define _NFS_NFSCL_H + +/* + * Extra stuff for a NFSv4 nfsnode. + * MALLOC'd to the correct length for the name and file handle. + * n4_data has the file handle, followed by the file name. + * The macro NFS4NODENAME() returns a pointer to the start of the + * name. + */ +struct nfsv4node { + u_int16_t n4_fhlen; + u_int16_t n4_namelen; + u_int8_t n4_data[1]; +}; + +#define NFS4NODENAME(n) (&((n)->n4_data[(n)->n4_fhlen])) + +/* + * Just a macro to convert the nfscl_reqstart arguments. + */ +#define NFSCL_REQSTART(n, p, v) \ + nfscl_reqstart((n), (p), VFSTONFS((v)->v_mount), \ + VTONFS(v)->n_fhp->nfh_fh, VTONFS(v)->n_fhp->nfh_len, NULL) + +/* + * These two macros convert between a lease duration and renew interval. + * For now, just make the renew interval 1/2 the lease duration. + * (They should be inverse operators.) + */ +#define NFSCL_RENEW(l) (((l) < 2) ? 1 : ((l) / 2)) +#define NFSCL_LEASE(r) ((r) * 2) + +/* + * These flag bits are used for the argument to nfscl_fillsattr() to + * indicate special handling of the attributes. + */ +#define NFSSATTR_FULL 0x1 +#define NFSSATTR_SIZE0 0x2 +#define NFSSATTR_SIZENEG1 0x4 +#define NFSSATTR_SIZERDEV 0x8 + +#endif /* _NFS_NFSCL_H */ |