The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: nfsproto.h,v 1.10 2003/08/07 16:33:57 agc Exp $        */
    2 
    3 /*
    4  * Copyright (c) 1989, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * This code is derived from software contributed to Berkeley by
    8  * Rick Macklem at The University of Guelph.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. Neither the name of the University nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  *      @(#)nfsproto.h  8.2 (Berkeley) 3/30/95
   35  */
   36 
   37 #ifndef _NFS_NFSPROTO_H_
   38 #define _NFS_NFSPROTO_H_
   39 
   40 
   41 /*
   42  * nfs definitions as per the Version 2 and 3 specs
   43  */
   44 
   45 /*
   46  * Constants as defined in the Sun NFS Version 2 and 3 specs.
   47  * "NFS: Network File System Protocol Specification" RFC1094
   48  * and in the "NFS: Network File System Version 3 Protocol
   49  * Specification" RFC1813.
   50  */
   51 
   52 #define NFS_PORT        2049
   53 #define NFS_PROG        100003
   54 #define NFS_VER2        2
   55 #define NFS_VER3        3
   56 #define NFS_V2MAXDATA   8192
   57 #define NFS_MAXDGRAMDATA 32768
   58 #define NFS_MAXDATA     MAXBSIZE
   59 #define NFS_MAXPATHLEN  1024
   60 #define NFS_MAXNAMLEN   255
   61 #define NFS_MAXPKTHDR   404
   62 #define NFS_MAXPACKET   (NFS_MAXPKTHDR + NFS_MAXDATA)
   63 #define NFS_MINPACKET   20
   64 #define NFS_FABLKSIZE   512     /* Size in bytes of a block wrt fa_blocks */
   65 
   66 /* Stat numbers for rpc returns (version 2 and 3) */
   67 #define NFS_OK                  0
   68 #define NFSERR_PERM             1
   69 #define NFSERR_NOENT            2
   70 #define NFSERR_IO               5
   71 #define NFSERR_NXIO             6
   72 #define NFSERR_ACCES            13
   73 #define NFSERR_EXIST            17
   74 #define NFSERR_XDEV             18      /* Version 3 only */
   75 #define NFSERR_NODEV            19
   76 #define NFSERR_NOTDIR           20
   77 #define NFSERR_ISDIR            21
   78 #define NFSERR_INVAL            22      /* Version 3 only */
   79 #define NFSERR_FBIG             27
   80 #define NFSERR_NOSPC            28
   81 #define NFSERR_ROFS             30
   82 #define NFSERR_MLINK            31      /* Version 3 only */
   83 #define NFSERR_NAMETOL          63
   84 #define NFSERR_NOTEMPTY         66
   85 #define NFSERR_DQUOT            69
   86 #define NFSERR_STALE            70
   87 #define NFSERR_REMOTE           71      /* Version 3 only */
   88 #define NFSERR_WFLUSH           99      /* Version 2 only */
   89 #define NFSERR_BADHANDLE        10001   /* The rest Version 3 only */
   90 #define NFSERR_NOT_SYNC         10002
   91 #define NFSERR_BAD_COOKIE       10003
   92 #define NFSERR_NOTSUPP          10004
   93 #define NFSERR_TOOSMALL         10005
   94 #define NFSERR_SERVERFAULT      10006
   95 #define NFSERR_BADTYPE          10007
   96 #define NFSERR_JUKEBOX          10008
   97 #define NFSERR_TRYLATER         NFSERR_JUKEBOX
   98 #define NFSERR_STALEWRITEVERF   30001   /* Fake return for nfs_commit() */
   99 
  100 #define NFSERR_RETVOID          0x20000000 /* Return void, not error */
  101 #define NFSERR_AUTHERR          0x40000000 /* Mark an authentication error */
  102 #define NFSERR_RETERR           0x80000000 /* Mark an error return for V3 */
  103 
  104 /* Sizes in bytes of various nfs rpc components */
  105 #define NFSX_UNSIGNED   4
  106 
  107 /* specific to NFS Version 2 */
  108 #define NFSX_V2FH       32
  109 #define NFSX_V2FATTR    68
  110 #define NFSX_V2SATTR    32
  111 #define NFSX_V2COOKIE   4
  112 #define NFSX_V2STATFS   20
  113 
  114 /* specific to NFS Version 3 */
  115 #define NFSX_V3FH               (sizeof (fhandle_t)) /* size this server uses */
  116 #define NFSX_V3FHMAX            64      /* max. allowed by protocol */
  117 #define NFSX_V3FATTR            84
  118 #define NFSX_V3SATTR            60      /* max. all fields filled in */
  119 #define NFSX_V3SRVSATTR         (sizeof (struct nfsv3_sattr))
  120 #define NFSX_V3POSTOPATTR       (NFSX_V3FATTR + NFSX_UNSIGNED)
  121 #define NFSX_V3WCCDATA          (NFSX_V3POSTOPATTR + 8 * NFSX_UNSIGNED)
  122 #define NFSX_V3COOKIEVERF       8
  123 #define NFSX_V3WRITEVERF        8
  124 #define NFSX_V3CREATEVERF       8
  125 #define NFSX_V3STATFS           52
  126 #define NFSX_V3FSINFO           48
  127 #define NFSX_V3PATHCONF         24
  128 
  129 /* variants for both versions */
  130 #define NFSX_FH(v3)             ((v3) ? (NFSX_V3FHMAX + NFSX_UNSIGNED) : \
  131                                         NFSX_V2FH)
  132 #define NFSX_SRVFH(v3)          ((v3) ? NFSX_V3FH : NFSX_V2FH)
  133 #define NFSX_FATTR(v3)          ((v3) ? NFSX_V3FATTR : NFSX_V2FATTR)
  134 #define NFSX_PREOPATTR(v3)      ((v3) ? (7 * NFSX_UNSIGNED) : 0)
  135 #define NFSX_POSTOPATTR(v3)     ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : 0)
  136 #define NFSX_POSTOPORFATTR(v3)  ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : \
  137                                         NFSX_V2FATTR)
  138 #define NFSX_WCCDATA(v3)        ((v3) ? NFSX_V3WCCDATA : 0)
  139 #define NFSX_WCCORFATTR(v3)     ((v3) ? NFSX_V3WCCDATA : NFSX_V2FATTR)
  140 #define NFSX_SATTR(v3)          ((v3) ? NFSX_V3SATTR : NFSX_V2SATTR)
  141 #define NFSX_COOKIEVERF(v3)     ((v3) ? NFSX_V3COOKIEVERF : 0)
  142 #define NFSX_WRITEVERF(v3)      ((v3) ? NFSX_V3WRITEVERF : 0)
  143 #define NFSX_READDIR(v3)        ((v3) ? (5 * NFSX_UNSIGNED) : \
  144                                         (2 * NFSX_UNSIGNED))
  145 #define NFSX_STATFS(v3)         ((v3) ? NFSX_V3STATFS : NFSX_V2STATFS)
  146 
  147 /* nfs rpc procedure numbers (before version mapping) */
  148 #define NFSPROC_NULL            0
  149 #define NFSPROC_GETATTR         1
  150 #define NFSPROC_SETATTR         2
  151 #define NFSPROC_LOOKUP          3
  152 #define NFSPROC_ACCESS          4
  153 #define NFSPROC_READLINK        5
  154 #define NFSPROC_READ            6
  155 #define NFSPROC_WRITE           7
  156 #define NFSPROC_CREATE          8
  157 #define NFSPROC_MKDIR           9
  158 #define NFSPROC_SYMLINK         10
  159 #define NFSPROC_MKNOD           11
  160 #define NFSPROC_REMOVE          12
  161 #define NFSPROC_RMDIR           13
  162 #define NFSPROC_RENAME          14
  163 #define NFSPROC_LINK            15
  164 #define NFSPROC_READDIR         16
  165 #define NFSPROC_READDIRPLUS     17
  166 #define NFSPROC_FSSTAT          18
  167 #define NFSPROC_FSINFO          19
  168 #define NFSPROC_PATHCONF        20
  169 #define NFSPROC_COMMIT          21
  170 
  171 /* And leasing (nqnfs) procedure numbers (must be last) */
  172 #define NQNFSPROC_GETLEASE      22
  173 #define NQNFSPROC_VACATED       23
  174 #define NQNFSPROC_EVICTED       24
  175 
  176 #define NFSPROC_NOOP            25
  177 #define NFS_NPROCS              26
  178 
  179 /* Actual Version 2 procedure numbers */
  180 #define NFSV2PROC_NULL          0
  181 #define NFSV2PROC_GETATTR       1
  182 #define NFSV2PROC_SETATTR       2
  183 #define NFSV2PROC_NOOP          3
  184 #define NFSV2PROC_ROOT          NFSV2PROC_NOOP  /* Obsolete */
  185 #define NFSV2PROC_LOOKUP        4
  186 #define NFSV2PROC_READLINK      5
  187 #define NFSV2PROC_READ          6
  188 #define NFSV2PROC_WRITECACHE    NFSV2PROC_NOOP  /* Obsolete */
  189 #define NFSV2PROC_WRITE         8
  190 #define NFSV2PROC_CREATE        9
  191 #define NFSV2PROC_REMOVE        10
  192 #define NFSV2PROC_RENAME        11
  193 #define NFSV2PROC_LINK          12
  194 #define NFSV2PROC_SYMLINK       13
  195 #define NFSV2PROC_MKDIR         14
  196 #define NFSV2PROC_RMDIR         15
  197 #define NFSV2PROC_READDIR       16
  198 #define NFSV2PROC_STATFS        17
  199 
  200 /*
  201  * Constants used by the Version 3 protocol for various RPCs
  202  */
  203 #define NFSV3SATTRTIME_DONTCHANGE       0
  204 #define NFSV3SATTRTIME_TOSERVER         1
  205 #define NFSV3SATTRTIME_TOCLIENT         2
  206 
  207 #define NFSV3ACCESS_READ                0x01
  208 #define NFSV3ACCESS_LOOKUP              0x02
  209 #define NFSV3ACCESS_MODIFY              0x04
  210 #define NFSV3ACCESS_EXTEND              0x08
  211 #define NFSV3ACCESS_DELETE              0x10
  212 #define NFSV3ACCESS_EXECUTE             0x20
  213 
  214 #define NFSV3WRITE_UNSTABLE             0
  215 #define NFSV3WRITE_DATASYNC             1
  216 #define NFSV3WRITE_FILESYNC             2
  217 
  218 #define NFSV3CREATE_UNCHECKED           0
  219 #define NFSV3CREATE_GUARDED             1
  220 #define NFSV3CREATE_EXCLUSIVE           2
  221 
  222 #define NFSV3FSINFO_LINK                0x01
  223 #define NFSV3FSINFO_SYMLINK             0x02
  224 #define NFSV3FSINFO_HOMOGENEOUS         0x08
  225 #define NFSV3FSINFO_CANSETTIME          0x10
  226 
  227 /* Conversion macros */
  228 #define vtonfsv2_mode(t,m) \
  229                 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
  230                                 MAKEIMODE((t), (m)))
  231 #define vtonfsv3_mode(m)        txdr_unsigned((m) & ALLPERMS)
  232 #define nfstov_mode(a)          (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS)
  233 #define vtonfsv2_type(a)        txdr_unsigned(nfsv2_type[((int32_t)(a))])
  234 #define vtonfsv3_type(a)        txdr_unsigned(nfsv3_type[((int32_t)(a))])
  235 #define nfsv2tov_type(a)        nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
  236 #define nfsv3tov_type(a)        nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
  237 
  238 /* File types */
  239 typedef enum { NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5,
  240         NFSOCK=6, NFFIFO=7 } nfstype;
  241 
  242 /* Structs for common parts of the rpc's */
  243 /*
  244  * File Handle (32 bytes for version 2), variable up to 64 for version 3.
  245  * File Handles of up to NFS_SMALLFH in size are stored directly in the
  246  * nfs node, whereas larger ones are malloc'd. (This never happens when
  247  * NFS_SMALLFH is set to 64.)
  248  * NFS_SMALLFH should be in the range of 32 to 64 and be divisible by 4.
  249  */
  250 #ifndef NFS_SMALLFH
  251 #define NFS_SMALLFH     64
  252 #endif
  253 union nfsfh {
  254         fhandle_t fh_generic;
  255         u_char    fh_bytes[NFS_SMALLFH];
  256 };
  257 typedef union nfsfh nfsfh_t;
  258 
  259 struct nfsv2_time {
  260         u_int32_t nfsv2_sec;
  261         u_int32_t nfsv2_usec;
  262 };
  263 typedef struct nfsv2_time       nfstime2;
  264 
  265 struct nfsv3_time {
  266         u_int32_t nfsv3_sec;
  267         u_int32_t nfsv3_nsec;
  268 };
  269 typedef struct nfsv3_time       nfstime3;
  270 
  271 /*
  272  * Quads are defined as arrays of 2 longs to ensure dense packing for the
  273  * protocol and to facilitate xdr conversion.
  274  */
  275 struct nfs_uquad {
  276         u_int32_t nfsuquad[2];
  277 };
  278 typedef struct nfs_uquad        nfsuint64;
  279 
  280 /*
  281  * Used to convert between two u_longs and a u_quad_t.
  282  */
  283 union nfs_quadconvert {
  284         u_int32_t lval[2];
  285         u_quad_t  qval;
  286 };
  287 typedef union nfs_quadconvert   nfsquad_t;
  288 
  289 /*
  290  * NFS Version 3 special file number.
  291  */
  292 struct nfsv3_spec {
  293         u_int32_t specdata1;
  294         u_int32_t specdata2;
  295 };
  296 typedef struct nfsv3_spec       nfsv3spec;
  297 
  298 /*
  299  * File attributes and setable attributes. These structures cover both
  300  * NFS version 2 and the version 3 protocol. Note that the union is only
  301  * used so that one pointer can refer to both variants. These structures
  302  * go out on the wire and must be densely packed, so no quad data types
  303  * are used. (all fields are longs or u_longs or structures of same)
  304  * NB: You can't do sizeof(struct nfs_fattr), you must use the
  305  *     NFSX_FATTR(v3) macro.
  306  */
  307 struct nfs_fattr {
  308         u_int32_t fa_type;
  309         u_int32_t fa_mode;
  310         u_int32_t fa_nlink;
  311         u_int32_t fa_uid;
  312         u_int32_t fa_gid;
  313         union {
  314                 struct {
  315                         u_int32_t nfsv2fa_size;
  316                         u_int32_t nfsv2fa_blocksize;
  317                         u_int32_t nfsv2fa_rdev;
  318                         u_int32_t nfsv2fa_blocks;
  319                         u_int32_t nfsv2fa_fsid;
  320                         u_int32_t nfsv2fa_fileid;
  321                         nfstime2  nfsv2fa_atime;
  322                         nfstime2  nfsv2fa_mtime;
  323                         nfstime2  nfsv2fa_ctime;
  324                 } fa_nfsv2;
  325                 struct {
  326                         nfsuint64 nfsv3fa_size;
  327                         nfsuint64 nfsv3fa_used;
  328                         nfsv3spec nfsv3fa_rdev;
  329                         nfsuint64 nfsv3fa_fsid;
  330                         nfsuint64 nfsv3fa_fileid;
  331                         nfstime3  nfsv3fa_atime;
  332                         nfstime3  nfsv3fa_mtime;
  333                         nfstime3  nfsv3fa_ctime;
  334                 } fa_nfsv3;
  335         } fa_un;
  336 };
  337 
  338 /* and some ugly defines for accessing union components */
  339 #define fa2_size                fa_un.fa_nfsv2.nfsv2fa_size
  340 #define fa2_blocksize           fa_un.fa_nfsv2.nfsv2fa_blocksize
  341 #define fa2_rdev                fa_un.fa_nfsv2.nfsv2fa_rdev
  342 #define fa2_blocks              fa_un.fa_nfsv2.nfsv2fa_blocks
  343 #define fa2_fsid                fa_un.fa_nfsv2.nfsv2fa_fsid
  344 #define fa2_fileid              fa_un.fa_nfsv2.nfsv2fa_fileid
  345 #define fa2_atime               fa_un.fa_nfsv2.nfsv2fa_atime
  346 #define fa2_mtime               fa_un.fa_nfsv2.nfsv2fa_mtime
  347 #define fa2_ctime               fa_un.fa_nfsv2.nfsv2fa_ctime
  348 #define fa3_size                fa_un.fa_nfsv3.nfsv3fa_size
  349 #define fa3_used                fa_un.fa_nfsv3.nfsv3fa_used
  350 #define fa3_rdev                fa_un.fa_nfsv3.nfsv3fa_rdev
  351 #define fa3_fsid                fa_un.fa_nfsv3.nfsv3fa_fsid
  352 #define fa3_fileid              fa_un.fa_nfsv3.nfsv3fa_fileid
  353 #define fa3_atime               fa_un.fa_nfsv3.nfsv3fa_atime
  354 #define fa3_mtime               fa_un.fa_nfsv3.nfsv3fa_mtime
  355 #define fa3_ctime               fa_un.fa_nfsv3.nfsv3fa_ctime
  356 
  357 struct nfsv2_sattr {
  358         u_int32_t sa_mode;
  359         u_int32_t sa_uid;
  360         u_int32_t sa_gid;
  361         u_int32_t sa_size;
  362         nfstime2  sa_atime;
  363         nfstime2  sa_mtime;
  364 };
  365 
  366 /*
  367  * NFS Version 3 sattr structure for the new node creation case.
  368  */
  369 struct nfsv3_sattr {
  370         u_int32_t sa_modetrue;
  371         u_int32_t sa_mode;
  372         u_int32_t sa_uidfalse;
  373         u_int32_t sa_gidfalse;
  374         u_int32_t sa_sizefalse;
  375         u_int32_t sa_atimetype;
  376         nfstime3  sa_atime;
  377         u_int32_t sa_mtimetype;
  378         nfstime3  sa_mtime;
  379 };
  380 
  381 struct nfs_statfs {
  382         union {
  383                 struct {
  384                         u_int32_t nfsv2sf_tsize;
  385                         u_int32_t nfsv2sf_bsize;
  386                         u_int32_t nfsv2sf_blocks;
  387                         u_int32_t nfsv2sf_bfree;
  388                         u_int32_t nfsv2sf_bavail;
  389                 } sf_nfsv2;
  390                 struct {
  391                         nfsuint64 nfsv3sf_tbytes;
  392                         nfsuint64 nfsv3sf_fbytes;
  393                         nfsuint64 nfsv3sf_abytes;
  394                         nfsuint64 nfsv3sf_tfiles;
  395                         nfsuint64 nfsv3sf_ffiles;
  396                         nfsuint64 nfsv3sf_afiles;
  397                         u_int32_t nfsv3sf_invarsec;
  398                 } sf_nfsv3;
  399         } sf_un;
  400 };
  401 
  402 #define sf_tsize        sf_un.sf_nfsv2.nfsv2sf_tsize
  403 #define sf_bsize        sf_un.sf_nfsv2.nfsv2sf_bsize
  404 #define sf_blocks       sf_un.sf_nfsv2.nfsv2sf_blocks
  405 #define sf_bfree        sf_un.sf_nfsv2.nfsv2sf_bfree
  406 #define sf_bavail       sf_un.sf_nfsv2.nfsv2sf_bavail
  407 #define sf_tbytes       sf_un.sf_nfsv3.nfsv3sf_tbytes
  408 #define sf_fbytes       sf_un.sf_nfsv3.nfsv3sf_fbytes
  409 #define sf_abytes       sf_un.sf_nfsv3.nfsv3sf_abytes
  410 #define sf_tfiles       sf_un.sf_nfsv3.nfsv3sf_tfiles
  411 #define sf_ffiles       sf_un.sf_nfsv3.nfsv3sf_ffiles
  412 #define sf_afiles       sf_un.sf_nfsv3.nfsv3sf_afiles
  413 #define sf_invarsec     sf_un.sf_nfsv3.nfsv3sf_invarsec
  414 
  415 struct nfsv3_fsinfo {
  416         u_int32_t fs_rtmax;
  417         u_int32_t fs_rtpref;
  418         u_int32_t fs_rtmult;
  419         u_int32_t fs_wtmax;
  420         u_int32_t fs_wtpref;
  421         u_int32_t fs_wtmult;
  422         u_int32_t fs_dtpref;
  423         nfsuint64 fs_maxfilesize;
  424         nfstime3  fs_timedelta;
  425         u_int32_t fs_properties;
  426 };
  427 
  428 struct nfsv3_pathconf {
  429         u_int32_t pc_linkmax;
  430         u_int32_t pc_namemax;
  431         u_int32_t pc_notrunc;
  432         u_int32_t pc_chownrestricted;
  433         u_int32_t pc_caseinsensitive;
  434         u_int32_t pc_casepreserving;
  435 };
  436 
  437 #endif

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