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freebsd/sys/nfsserver/nfsproto.h
Doug Rabson a62dc40654 Changes to support version 3 of the NFS protocol. 
The version 2 support has been tested (client+server) against FreeBSD-2.0,
IRIX 5.3 and FreeBSD-current (using a loopback mount).  The version 2 support
is stable AFAIK.
The version 3 support has been tested with a loopback mount and minimally
against an IRIX 5.3 server.  It needs more testing and may have problems.
I have patched amd to support the new variable length filehandles although
it will still only use version 2 of the protocol.

Before booting a kernel with these changes, nfs clients will need to at least
build and install /usr/sbin/mount_nfs.  Servers will need to build and
install /usr/sbin/mountd.

NFS diskless support is untested.

Obtained from: Rick Macklem <rick@snowhite.cis.uoguelph.ca>
1995-06-27 11:07:30 +00:00

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/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)nfsproto.h 8.1 (Berkeley) 6/10/93
* $Id: nfsproto.h,v 1.4 1994/08/21 06:50:13 paul Exp $
*/
#ifndef _NFS_NFSPROTO_H_
#define _NFS_NFSPROTO_H_
/*
* nfs definitions as per the Version 2 and 3 specs
*/
/*
* Constants as defined in the Sun NFS Version 2 and 3 specs.
* "NFS: Network File System Protocol Specification" RFC1094
* and in the "NFS: Network File System Version 3 Protocol
* Specification"
*/
#define NFS_PORT 2049
#define NFS_PROG 100003
#define NFS_VER2 2
#define NFS_VER3 3
#define NFS_V2MAXDATA 8192
#define NFS_MAXDGRAMDATA 16384
#define NFS_MAXDATA 32768
#define NFS_MAXPATHLEN 1024
#define NFS_MAXNAMLEN 255
#define NFS_MAXPKTHDR 404
#define NFS_MAXPACKET (NFS_MAXPKTHDR + NFS_MAXDATA)
#define NFS_MINPACKET 20
#define NFS_FABLKSIZE 512 /* Size in bytes of a block wrt fa_blocks */
/* Stat numbers for rpc returns (version 2 and 3) */
#define NFS_OK 0
#define NFSERR_PERM 1
#define NFSERR_NOENT 2
#define NFSERR_IO 5
#define NFSERR_NXIO 6
#define NFSERR_ACCES 13
#define NFSERR_EXIST 17
#define NFSERR_XDEV 18 /* Version 3 only */
#define NFSERR_NODEV 19
#define NFSERR_NOTDIR 20
#define NFSERR_ISDIR 21
#define NFSERR_INVAL 22 /* Version 3 only */
#define NFSERR_FBIG 27
#define NFSERR_NOSPC 28
#define NFSERR_ROFS 30
#define NFSERR_MLINK 31 /* Version 3 only */
#define NFSERR_NAMETOL 63
#define NFSERR_NOTEMPTY 66
#define NFSERR_DQUOT 69
#define NFSERR_STALE 70
#define NFSERR_REMOTE 71 /* Version 3 only */
#define NFSERR_WFLUSH 99 /* Version 2 only */
#define NFSERR_BADHANDLE 10001 /* The rest Version 3 only */
#define NFSERR_NOT_SYNC 10002
#define NFSERR_BAD_COOKIE 10003
#define NFSERR_NOTSUPP 10004
#define NFSERR_TOOSMALL 10005
#define NFSERR_SERVERFAULT 10006
#define NFSERR_BADTYPE 10007
#define NFSERR_JUKEBOX 10008
#define NFSERR_TRYLATER NFSERR_JUKEBOX
#define NFSERR_STALEWRITEVERF 30001 /* Fake return for nfs_commit() */
#define NFSERR_RETVOID 0x20000000 /* Return void, not error */
#define NFSERR_AUTHERR 0x40000000 /* Mark an authentication error */
#define NFSERR_RETERR 0x80000000 /* Mark an error return for V3 */
/* Sizes in bytes of various nfs rpc components */
#define NFSX_UNSIGNED 4
/* specific to NFS Version 2 */
#define NFSX_V2FH 32
#define NFSX_V2FATTR 68
#define NFSX_V2SATTR 32
#define NFSX_V2COOKIE 4
#define NFSX_V2STATFS 20
/* specific to NFS Version 3 */
#define NFSX_V3FH (sizeof (fhandle_t)) /* size this server uses */
#define NFSX_V3FHMAX 64 /* max. allowed by protocol */
#define NFSX_V3FATTR 84
#define NFSX_V3SATTR 60 /* max. all fields filled in */
#define NFSX_V3SRVSATTR (sizeof (struct nfsv3_sattr))
#define NFSX_V3POSTOPATTR (NFSX_V3FATTR + NFSX_UNSIGNED)
#define NFSX_V3WCCDATA (NFSX_V3POSTOPATTR + 8 * NFSX_UNSIGNED)
#define NFSX_V3COOKIEVERF 8
#define NFSX_V3WRITEVERF 8
#define NFSX_V3CREATEVERF 8
#define NFSX_V3STATFS 52
#define NFSX_V3FSINFO 48
#define NFSX_V3PATHCONF 24
/* variants for both versions */
#define NFSX_FH(v3) ((v3) ? (NFSX_V3FHMAX + NFSX_UNSIGNED) : \
NFSX_V2FH)
#define NFSX_SRVFH(v3) ((v3) ? NFSX_V3FH : NFSX_V2FH)
#define NFSX_FATTR(v3) ((v3) ? NFSX_V3FATTR : NFSX_V2FATTR)
#define NFSX_PREOPATTR(v3) ((v3) ? (7 * NFSX_UNSIGNED) : 0)
#define NFSX_POSTOPATTR(v3) ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : 0)
#define NFSX_POSTOPORFATTR(v3) ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : \
NFSX_V2FATTR)
#define NFSX_WCCDATA(v3) ((v3) ? NFSX_V3WCCDATA : 0)
#define NFSX_WCCORFATTR(v3) ((v3) ? NFSX_V3WCCDATA : NFSX_V2FATTR)
#define NFSX_SATTR(v3) ((v3) ? NFSX_V3SATTR : NFSX_V2SATTR)
#define NFSX_COOKIEVERF(v3) ((v3) ? NFSX_V3COOKIEVERF : 0)
#define NFSX_WRITEVERF(v3) ((v3) ? NFSX_V3WRITEVERF : 0)
#define NFSX_READDIR(v3) ((v3) ? (5 * NFSX_UNSIGNED) : \
(2 * NFSX_UNSIGNED))
#define NFSX_STATFS(v3) ((v3) ? NFSX_V3STATFS : NFSX_V2STATFS)
/* nfs rpc procedure numbers (before version mapping) */
#define NFSPROC_NULL 0
#define NFSPROC_GETATTR 1
#define NFSPROC_SETATTR 2
#define NFSPROC_LOOKUP 3
#define NFSPROC_ACCESS 4
#define NFSPROC_READLINK 5
#define NFSPROC_READ 6
#define NFSPROC_WRITE 7
#define NFSPROC_CREATE 8
#define NFSPROC_MKDIR 9
#define NFSPROC_SYMLINK 10
#define NFSPROC_MKNOD 11
#define NFSPROC_REMOVE 12
#define NFSPROC_RMDIR 13
#define NFSPROC_RENAME 14
#define NFSPROC_LINK 15
#define NFSPROC_READDIR 16
#define NFSPROC_READDIRPLUS 17
#define NFSPROC_FSSTAT 18
#define NFSPROC_FSINFO 19
#define NFSPROC_PATHCONF 20
#define NFSPROC_COMMIT 21
/* And leasing (nqnfs) procedure numbers (must be last) */
#define NQNFSPROC_GETLEASE 22
#define NQNFSPROC_VACATED 23
#define NQNFSPROC_EVICTED 24
#define NFSPROC_NOOP 25
#define NFS_NPROCS 26
/* Actual Version 2 procedure numbers */
#define NFSV2PROC_NULL 0
#define NFSV2PROC_GETATTR 1
#define NFSV2PROC_SETATTR 2
#define NFSV2PROC_NOOP 3
#define NFSV2PROC_ROOT NFSV2PROC_NOOP /* Obsolete */
#define NFSV2PROC_LOOKUP 4
#define NFSV2PROC_READLINK 5
#define NFSV2PROC_READ 6
#define NFSV2PROC_WRITECACHE NFSV2PROC_NOOP /* Obsolete */
#define NFSV2PROC_WRITE 8
#define NFSV2PROC_CREATE 9
#define NFSV2PROC_REMOVE 10
#define NFSV2PROC_RENAME 11
#define NFSV2PROC_LINK 12
#define NFSV2PROC_SYMLINK 13
#define NFSV2PROC_MKDIR 14
#define NFSV2PROC_RMDIR 15
#define NFSV2PROC_READDIR 16
#define NFSV2PROC_STATFS 17
/*
* Constants used by the Version 3 protocol for various RPCs
*/
#define NFSV3SATTRTIME_DONTCHANGE 0
#define NFSV3SATTRTIME_TOSERVER 1
#define NFSV3SATTRTIME_TOCLIENT 2
#define NFSV3ACCESS_READ 0x01
#define NFSV3ACCESS_LOOKUP 0x02
#define NFSV3ACCESS_MODIFY 0x04
#define NFSV3ACCESS_EXTEND 0x08
#define NFSV3ACCESS_DELETE 0x10
#define NFSV3ACCESS_EXECUTE 0x20
#define NFSV3WRITE_UNSTABLE 0
#define NFSV3WRITE_DATASYNC 1
#define NFSV3WRITE_FILESYNC 2
#define NFSV3CREATE_UNCHECKED 0
#define NFSV3CREATE_GUARDED 1
#define NFSV3CREATE_EXCLUSIVE 2
#define NFSV3FSINFO_LINK 0x01
#define NFSV3FSINFO_SYMLINK 0x02
#define NFSV3FSINFO_HOMOGENEOUS 0x08
#define NFSV3FSINFO_CANSETTIME 0x10
/* Conversion macros */
#define vtonfsv2_mode(t,m) \
txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
MAKEIMODE((t), (m)))
#define vtonfsv3_mode(m) txdr_unsigned((m) & 07777)
#define nfstov_mode(a) (fxdr_unsigned(u_short, (a))&07777)
#define vtonfsv2_type(a) txdr_unsigned(nfsv2_type[((long)(a))])
#define vtonfsv3_type(a) txdr_unsigned(nfsv3_type[((long)(a))])
#define nfsv2tov_type(a) nv2tov_type[fxdr_unsigned(u_long,(a))&0x7]
#define nfsv3tov_type(a) nv3tov_type[fxdr_unsigned(u_long,(a))&0x7]
/* File types */
typedef enum { NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5,
NFSOCK=6, NFFIFO=7 } nfstype;
/* Structs for common parts of the rpc's */
/*
* File Handle (32 bytes for version 2), variable up to 64 for version 3.
* File Handles of up to NFS_SMALLFH in size are stored directly in the
* nfs node, whereas larger ones are malloc'd. (This never happens when
* NFS_SMALLFH is set to 64.)
* NFS_SMALLFH should be in the range of 32 to 64 and be divisible by 4.
*/
#ifndef NFS_SMALLFH
#define NFS_SMALLFH 64
#endif
union nfsfh {
fhandle_t fh_generic;
u_char fh_bytes[NFS_SMALLFH];
};
typedef union nfsfh nfsfh_t;
struct nfsv2_time {
u_long nfsv2_sec;
u_long nfsv2_usec;
};
typedef struct nfsv2_time nfstime2;
struct nfsv3_time {
u_long nfsv3_sec;
u_long nfsv3_nsec;
};
typedef struct nfsv3_time nfstime3;
/*
* Quads are defined as arrays of 2 longs to ensure dense packing for the
* protocol and to facilitate xdr conversion.
*/
struct nfs_uquad {
u_long nfsuquad[2];
};
typedef struct nfs_uquad nfsuint64;
/*
* Used to convert between two u_longs and a u_quad_t.
*/
union nfs_quadconvert {
u_long lval[2];
u_quad_t qval;
};
typedef union nfs_quadconvert nfsquad_t;
/*
* NFS Version 3 special file number.
*/
struct nfsv3_spec {
u_long specdata1;
u_long specdata2;
};
typedef struct nfsv3_spec nfsv3spec;
/*
* File attributes and setable attributes. These structures cover both
* NFS version 2 and the version 3 protocol. Note that the union is only
* used so that one pointer can refer to both variants. These structures
* go out on the wire and must be densely packed, so no quad data types
* are used. (all fields are longs or u_longs or structures of same)
* NB: You can't do sizeof(struct nfs_fattr), you must use the
* NFSX_FATTR(v3) macro.
*/
struct nfs_fattr {
u_long fa_type;
u_long fa_mode;
u_long fa_nlink;
u_long fa_uid;
u_long fa_gid;
union {
struct {
u_long nfsv2fa_size;
u_long nfsv2fa_blocksize;
u_long nfsv2fa_rdev;
u_long nfsv2fa_blocks;
u_long nfsv2fa_fsid;
u_long nfsv2fa_fileid;
nfstime2 nfsv2fa_atime;
nfstime2 nfsv2fa_mtime;
nfstime2 nfsv2fa_ctime;
} fa_nfsv2;
struct {
nfsuint64 nfsv3fa_size;
nfsuint64 nfsv3fa_used;
nfsv3spec nfsv3fa_rdev;
nfsuint64 nfsv3fa_fsid;
nfsuint64 nfsv3fa_fileid;
nfstime3 nfsv3fa_atime;
nfstime3 nfsv3fa_mtime;
nfstime3 nfsv3fa_ctime;
} fa_nfsv3;
} fa_un;
};
/* and some ugly defines for accessing union components */
#define fa2_size fa_un.fa_nfsv2.nfsv2fa_size
#define fa2_blocksize fa_un.fa_nfsv2.nfsv2fa_blocksize
#define fa2_rdev fa_un.fa_nfsv2.nfsv2fa_rdev
#define fa2_blocks fa_un.fa_nfsv2.nfsv2fa_blocks
#define fa2_fsid fa_un.fa_nfsv2.nfsv2fa_fsid
#define fa2_fileid fa_un.fa_nfsv2.nfsv2fa_fileid
#define fa2_atime fa_un.fa_nfsv2.nfsv2fa_atime
#define fa2_mtime fa_un.fa_nfsv2.nfsv2fa_mtime
#define fa2_ctime fa_un.fa_nfsv2.nfsv2fa_ctime
#define fa3_size fa_un.fa_nfsv3.nfsv3fa_size
#define fa3_used fa_un.fa_nfsv3.nfsv3fa_used
#define fa3_rdev fa_un.fa_nfsv3.nfsv3fa_rdev
#define fa3_fsid fa_un.fa_nfsv3.nfsv3fa_fsid
#define fa3_fileid fa_un.fa_nfsv3.nfsv3fa_fileid
#define fa3_atime fa_un.fa_nfsv3.nfsv3fa_atime
#define fa3_mtime fa_un.fa_nfsv3.nfsv3fa_mtime
#define fa3_ctime fa_un.fa_nfsv3.nfsv3fa_ctime
struct nfsv2_sattr {
u_long sa_mode;
u_long sa_uid;
u_long sa_gid;
u_long sa_size;
nfstime2 sa_atime;
nfstime2 sa_mtime;
};
/*
* NFS Version 3 sattr structure for the new node creation case.
*/
struct nfsv3_sattr {
u_long sa_modetrue;
u_long sa_mode;
u_long sa_uidtrue;
u_long sa_uid;
u_long sa_gidtrue;
u_long sa_gid;
u_long sa_sizefalse;
u_long sa_atimetype;
nfstime3 sa_atime;
u_long sa_mtimetype;
nfstime3 sa_mtime;
};
struct nfs_statfs {
union {
struct {
u_long nfsv2sf_tsize;
u_long nfsv2sf_bsize;
u_long nfsv2sf_blocks;
u_long nfsv2sf_bfree;
u_long nfsv2sf_bavail;
} sf_nfsv2;
struct {
nfsuint64 nfsv3sf_tbytes;
nfsuint64 nfsv3sf_fbytes;
nfsuint64 nfsv3sf_abytes;
nfsuint64 nfsv3sf_tfiles;
nfsuint64 nfsv3sf_ffiles;
nfsuint64 nfsv3sf_afiles;
u_long nfsv3sf_invarsec;
} sf_nfsv3;
} sf_un;
};
#define sf_tsize sf_un.sf_nfsv2.nfsv2sf_tsize
#define sf_bsize sf_un.sf_nfsv2.nfsv2sf_bsize
#define sf_blocks sf_un.sf_nfsv2.nfsv2sf_blocks
#define sf_bfree sf_un.sf_nfsv2.nfsv2sf_bfree
#define sf_bavail sf_un.sf_nfsv2.nfsv2sf_bavail
#define sf_tbytes sf_un.sf_nfsv3.nfsv3sf_tbytes
#define sf_fbytes sf_un.sf_nfsv3.nfsv3sf_fbytes
#define sf_abytes sf_un.sf_nfsv3.nfsv3sf_abytes
#define sf_tfiles sf_un.sf_nfsv3.nfsv3sf_tfiles
#define sf_ffiles sf_un.sf_nfsv3.nfsv3sf_ffiles
#define sf_afiles sf_un.sf_nfsv3.nfsv3sf_afiles
#define sf_invarsec sf_un.sf_nfsv3.nfsv3sf_invarsec
struct nfsv3_fsinfo {
u_long fs_rtmax;
u_long fs_rtpref;
u_long fs_rtmult;
u_long fs_wtmax;
u_long fs_wtpref;
u_long fs_wtmult;
u_long fs_dtpref;
nfsuint64 fs_maxfilesize;
nfstime3 fs_timedelta;
u_long fs_properties;
};
struct nfsv3_pathconf {
u_long pc_linkmax;
u_long pc_namemax;
u_long pc_notrunc;
u_long pc_chownrestricted;
u_long pc_caseinsensitive;
u_long pc_casepreserving;
};
#endif
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