FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfsproto.h

     /*      $NetBSD: nfsproto.h,v 1.17 2006/12/27 12:10:09 yamt Exp $       */
     
     /*
      * 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. 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  8.2 (Berkeley) 3/30/95
     */
    
    #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" RFC1813.
     */
    
    #define NFS_PORT        2049
    #define NFS_PROG        100003
    #define NFS_VER2        2
    #define NFS_VER3        3
    #define NFS_V2MAXDATA   8192
    #define NFS_MAXDGRAMDATA (60*1024)
    #define NFS_MAXDATA     MAXBSIZE
    #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_TIMEDOUT         60      /* XXX */
    #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               (12/*sizeof(fhandle_t)*/+16)
   #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(nsfh, v3)    (((v3) ? NFSX_UNSIGNED : 0) + NFSRVFH_SIZE(nsfh))
   #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)
   #define NFSX_FHTOOBIG_P(sz, v3) ((sz) > ((v3) ? NFSX_V3FHMAX : NFSX_V2FH))
   
   /* 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
   #define NFSPROC_NOOP            22
   #define NFS_NPROCS              23
   
   /* 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) & ALLPERMS)
   #define nfstov_mode(a)          (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS)
   #define vtonfsv2_type(a)        txdr_unsigned(nfsv2_type[((int32_t)(a))])
   #define vtonfsv3_type(a)        txdr_unsigned(nfsv3_type[((int32_t)(a))])
   #define nfsv2tov_type(a)        nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
   #define nfsv3tov_type(a)        nv3tov_type[fxdr_unsigned(u_int32_t,(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 {
   #ifdef _KERNEL
           fhandle_t fh_generic;
   #endif
           u_char    fh_bytes[NFS_SMALLFH];
   };
   typedef union nfsfh nfsfh_t;
   
   struct nfsv2_time {
           u_int32_t nfsv2_sec;
           u_int32_t nfsv2_usec;
   };
   typedef struct nfsv2_time       nfstime2;
   
   struct nfsv3_time {
           u_int32_t nfsv3_sec;
           u_int32_t 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_int32_t nfsuquad[2];
   };
   typedef struct nfs_uquad        nfsuint64;
   
   /*
    * Used to convert between two u_longs and a u_quad_t.
    */
   union nfs_quadconvert {
           u_int32_t lval[2];
           u_quad_t  qval;
   };
   typedef union nfs_quadconvert   nfsquad_t;
   
   /*
    * NFS Version 3 special file number.
    */
   struct nfsv3_spec {
           u_int32_t specdata1;
           u_int32_t 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_int32_t fa_type;
           u_int32_t fa_mode;
           u_int32_t fa_nlink;
           u_int32_t fa_uid;
           u_int32_t fa_gid;
           union {
                   struct {
                           u_int32_t nfsv2fa_size;
                           u_int32_t nfsv2fa_blocksize;
                           u_int32_t nfsv2fa_rdev;
                           u_int32_t nfsv2fa_blocks;
                           u_int32_t nfsv2fa_fsid;
                           u_int32_t 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_int32_t sa_mode;
           u_int32_t sa_uid;
           u_int32_t sa_gid;
           u_int32_t sa_size;
           nfstime2  sa_atime;
           nfstime2  sa_mtime;
   };
   
   /*
    * NFS Version 3 sattr structure for the new node creation case.
    */
   struct nfsv3_sattr {
           u_int32_t sa_modetrue;
           u_int32_t sa_mode;
           u_int32_t sa_uidfalse;
           u_int32_t sa_gidfalse;
           u_int32_t sa_sizefalse;
           u_int32_t sa_atimetype;
           nfstime3  sa_atime;
           u_int32_t sa_mtimetype;
           nfstime3  sa_mtime;
   };
   
   struct nfs_statfs {
           union {
                   struct {
                           u_int32_t nfsv2sf_tsize;
                           u_int32_t nfsv2sf_bsize;
                           u_int32_t nfsv2sf_blocks;
                           u_int32_t nfsv2sf_bfree;
                           u_int32_t nfsv2sf_bavail;
                   } sf_nfsv2;
                   struct {
                           nfsuint64 nfsv3sf_tbytes;
                           nfsuint64 nfsv3sf_fbytes;
                           nfsuint64 nfsv3sf_abytes;
                           nfsuint64 nfsv3sf_tfiles;
                           nfsuint64 nfsv3sf_ffiles;
                           nfsuint64 nfsv3sf_afiles;
                           u_int32_t 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_int32_t fs_rtmax;
           u_int32_t fs_rtpref;
           u_int32_t fs_rtmult;
           u_int32_t fs_wtmax;
           u_int32_t fs_wtpref;
           u_int32_t fs_wtmult;
           u_int32_t fs_dtpref;
           nfsuint64 fs_maxfilesize;
           nfstime3  fs_timedelta;
           u_int32_t fs_properties;
   };
   
   struct nfsv3_pathconf {
           u_int32_t pc_linkmax;
           u_int32_t pc_namemax;
           u_int32_t pc_notrunc;
           u_int32_t pc_chownrestricted;
           u_int32_t pc_caseinsensitive;
           u_int32_t pc_casepreserving;
   };
   
   #endif

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