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 /*
    2  * Copyright (c) 1989, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Rick Macklem at The University of Guelph.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by the University of
   19  *      California, Berkeley and its contributors.
   20  * 4. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  *      @(#)nfsproto.h  8.1 (Berkeley) 6/10/93
   37  * $FreeBSD: src/sys/nfs/nfsproto.h,v 1.1.4.2 1999/09/05 08:19:52 peter Exp $
   38  */
   39 
   40 #ifndef _NFS_NFSPROTO_H_
   41 #define _NFS_NFSPROTO_H_
   42 
   43 /*
   44  * nfs definitions as per the Version 2 and 3 specs
   45  */
   46 
   47 /*
   48  * Constants as defined in the Sun NFS Version 2 and 3 specs.
   49  * "NFS: Network File System Protocol Specification" RFC1094
   50  * and in the "NFS: Network File System Version 3 Protocol
   51  * Specification"
   52  */
   53 
   54 #define NFS_PORT        2049
   55 #define NFS_PROG        100003
   56 #define NFS_VER2        2
   57 #define NFS_VER3        3
   58 #define NFS_V2MAXDATA   8192
   59 #define NFS_MAXDGRAMDATA 16384
   60 #define NFS_MAXDATA     32768
   61 #define NFS_MAXPATHLEN  1024
   62 #define NFS_MAXNAMLEN   255
   63 #define NFS_MAXPKTHDR   404
   64 #define NFS_MAXPACKET   (NFS_MAXPKTHDR + NFS_MAXDATA)
   65 #define NFS_MINPACKET   20
   66 #define NFS_FABLKSIZE   512     /* Size in bytes of a block wrt fa_blocks */
   67 
   68 /* Stat numbers for rpc returns (version 2 and 3) */
   69 #define NFS_OK                  0
   70 #define NFSERR_PERM             1
   71 #define NFSERR_NOENT            2
   72 #define NFSERR_IO               5
   73 #define NFSERR_NXIO             6
   74 #define NFSERR_ACCES            13
   75 #define NFSERR_EXIST            17
   76 #define NFSERR_XDEV             18      /* Version 3 only */
   77 #define NFSERR_NODEV            19
   78 #define NFSERR_NOTDIR           20
   79 #define NFSERR_ISDIR            21
   80 #define NFSERR_INVAL            22      /* Version 3 only */
   81 #define NFSERR_FBIG             27
   82 #define NFSERR_NOSPC            28
   83 #define NFSERR_ROFS             30
   84 #define NFSERR_MLINK            31      /* Version 3 only */
   85 #define NFSERR_NAMETOL          63
   86 #define NFSERR_NOTEMPTY         66
   87 #define NFSERR_DQUOT            69
   88 #define NFSERR_STALE            70
   89 #define NFSERR_REMOTE           71      /* Version 3 only */
   90 #define NFSERR_WFLUSH           99      /* Version 2 only */
   91 #define NFSERR_BADHANDLE        10001   /* The rest Version 3 only */
   92 #define NFSERR_NOT_SYNC         10002
   93 #define NFSERR_BAD_COOKIE       10003
   94 #define NFSERR_NOTSUPP          10004
   95 #define NFSERR_TOOSMALL         10005
   96 #define NFSERR_SERVERFAULT      10006
   97 #define NFSERR_BADTYPE          10007
   98 #define NFSERR_JUKEBOX          10008
   99 #define NFSERR_TRYLATER         NFSERR_JUKEBOX
  100 #define NFSERR_STALEWRITEVERF   30001   /* Fake return for nfs_commit() */
  101 
  102 #define NFSERR_RETVOID          0x20000000 /* Return void, not error */
  103 #define NFSERR_AUTHERR          0x40000000 /* Mark an authentication error */
  104 #define NFSERR_RETERR           0x80000000 /* Mark an error return for V3 */
  105 
  106 /* Sizes in bytes of various nfs rpc components */
  107 #define NFSX_UNSIGNED   4
  108 
  109 /* specific to NFS Version 2 */
  110 #define NFSX_V2FH       32
  111 #define NFSX_V2FATTR    68
  112 #define NFSX_V2SATTR    32
  113 #define NFSX_V2COOKIE   4
  114 #define NFSX_V2STATFS   20
  115 
  116 /* specific to NFS Version 3 */
  117 #define NFSX_V3FH               (sizeof (fhandle_t)) /* size this server uses */
  118 #define NFSX_V3FHMAX            64      /* max. allowed by protocol */
  119 #define NFSX_V3FATTR            84
  120 #define NFSX_V3SATTR            60      /* max. all fields filled in */
  121 #define NFSX_V3SRVSATTR         (sizeof (struct nfsv3_sattr))
  122 #define NFSX_V3POSTOPATTR       (NFSX_V3FATTR + NFSX_UNSIGNED)
  123 #define NFSX_V3WCCDATA          (NFSX_V3POSTOPATTR + 8 * NFSX_UNSIGNED)
  124 #define NFSX_V3COOKIEVERF       8
  125 #define NFSX_V3WRITEVERF        8
  126 #define NFSX_V3CREATEVERF       8
  127 #define NFSX_V3STATFS           52
  128 #define NFSX_V3FSINFO           48
  129 #define NFSX_V3PATHCONF         24
  130 
  131 /* variants for both versions */
  132 #define NFSX_FH(v3)             ((v3) ? (NFSX_V3FHMAX + NFSX_UNSIGNED) : \
  133                                         NFSX_V2FH)
  134 #define NFSX_SRVFH(v3)          ((v3) ? NFSX_V3FH : NFSX_V2FH)
  135 #define NFSX_FATTR(v3)          ((v3) ? NFSX_V3FATTR : NFSX_V2FATTR)
  136 #define NFSX_PREOPATTR(v3)      ((v3) ? (7 * NFSX_UNSIGNED) : 0)
  137 #define NFSX_POSTOPATTR(v3)     ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : 0)
  138 #define NFSX_POSTOPORFATTR(v3)  ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : \
  139                                         NFSX_V2FATTR)
  140 #define NFSX_WCCDATA(v3)        ((v3) ? NFSX_V3WCCDATA : 0)
  141 #define NFSX_WCCORFATTR(v3)     ((v3) ? NFSX_V3WCCDATA : NFSX_V2FATTR)
  142 #define NFSX_SATTR(v3)          ((v3) ? NFSX_V3SATTR : NFSX_V2SATTR)
  143 #define NFSX_COOKIEVERF(v3)     ((v3) ? NFSX_V3COOKIEVERF : 0)
  144 #define NFSX_WRITEVERF(v3)      ((v3) ? NFSX_V3WRITEVERF : 0)
  145 #define NFSX_READDIR(v3)        ((v3) ? (5 * NFSX_UNSIGNED) : \
  146                                         (2 * NFSX_UNSIGNED))
  147 #define NFSX_STATFS(v3)         ((v3) ? NFSX_V3STATFS : NFSX_V2STATFS)
  148 
  149 /* nfs rpc procedure numbers (before version mapping) */
  150 #define NFSPROC_NULL            0
  151 #define NFSPROC_GETATTR         1
  152 #define NFSPROC_SETATTR         2
  153 #define NFSPROC_LOOKUP          3
  154 #define NFSPROC_ACCESS          4
  155 #define NFSPROC_READLINK        5
  156 #define NFSPROC_READ            6
  157 #define NFSPROC_WRITE           7
  158 #define NFSPROC_CREATE          8
  159 #define NFSPROC_MKDIR           9
  160 #define NFSPROC_SYMLINK         10
  161 #define NFSPROC_MKNOD           11
  162 #define NFSPROC_REMOVE          12
  163 #define NFSPROC_RMDIR           13
  164 #define NFSPROC_RENAME          14
  165 #define NFSPROC_LINK            15
  166 #define NFSPROC_READDIR         16
  167 #define NFSPROC_READDIRPLUS     17
  168 #define NFSPROC_FSSTAT          18
  169 #define NFSPROC_FSINFO          19
  170 #define NFSPROC_PATHCONF        20
  171 #define NFSPROC_COMMIT          21
  172 
  173 /* And leasing (nqnfs) procedure numbers (must be last) */
  174 #define NQNFSPROC_GETLEASE      22
  175 #define NQNFSPROC_VACATED       23
  176 #define NQNFSPROC_EVICTED       24
  177 
  178 #define NFSPROC_NOOP            25
  179 #define NFS_NPROCS              26
  180 
  181 /* Actual Version 2 procedure numbers */
  182 #define NFSV2PROC_NULL          0
  183 #define NFSV2PROC_GETATTR       1
  184 #define NFSV2PROC_SETATTR       2
  185 #define NFSV2PROC_NOOP          3
  186 #define NFSV2PROC_ROOT          NFSV2PROC_NOOP  /* Obsolete */
  187 #define NFSV2PROC_LOOKUP        4
  188 #define NFSV2PROC_READLINK      5
  189 #define NFSV2PROC_READ          6
  190 #define NFSV2PROC_WRITECACHE    NFSV2PROC_NOOP  /* Obsolete */
  191 #define NFSV2PROC_WRITE         8
  192 #define NFSV2PROC_CREATE        9
  193 #define NFSV2PROC_REMOVE        10
  194 #define NFSV2PROC_RENAME        11
  195 #define NFSV2PROC_LINK          12
  196 #define NFSV2PROC_SYMLINK       13
  197 #define NFSV2PROC_MKDIR         14
  198 #define NFSV2PROC_RMDIR         15
  199 #define NFSV2PROC_READDIR       16
  200 #define NFSV2PROC_STATFS        17
  201 
  202 /*
  203  * Constants used by the Version 3 protocol for various RPCs
  204  */
  205 #define NFSV3SATTRTIME_DONTCHANGE       0
  206 #define NFSV3SATTRTIME_TOSERVER         1
  207 #define NFSV3SATTRTIME_TOCLIENT         2
  208 
  209 #define NFSV3ACCESS_READ                0x01
  210 #define NFSV3ACCESS_LOOKUP              0x02
  211 #define NFSV3ACCESS_MODIFY              0x04
  212 #define NFSV3ACCESS_EXTEND              0x08
  213 #define NFSV3ACCESS_DELETE              0x10
  214 #define NFSV3ACCESS_EXECUTE             0x20
  215 
  216 #define NFSV3WRITE_UNSTABLE             0
  217 #define NFSV3WRITE_DATASYNC             1
  218 #define NFSV3WRITE_FILESYNC             2
  219 
  220 #define NFSV3CREATE_UNCHECKED           0
  221 #define NFSV3CREATE_GUARDED             1
  222 #define NFSV3CREATE_EXCLUSIVE           2
  223 
  224 #define NFSV3FSINFO_LINK                0x01
  225 #define NFSV3FSINFO_SYMLINK             0x02
  226 #define NFSV3FSINFO_HOMOGENEOUS         0x08
  227 #define NFSV3FSINFO_CANSETTIME          0x10
  228 
  229 /* Conversion macros */
  230 #define vtonfsv2_mode(t,m) \
  231                 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
  232                                 MAKEIMODE((t), (m)))
  233 #define vtonfsv3_mode(m)        txdr_unsigned((m) & 07777)
  234 #define nfstov_mode(a)          (fxdr_unsigned(u_short, (a))&07777)
  235 #define vtonfsv2_type(a)        txdr_unsigned(nfsv2_type[((long)(a))])
  236 #define vtonfsv3_type(a)        txdr_unsigned(nfsv3_type[((long)(a))])
  237 #define nfsv2tov_type(a)        nv2tov_type[fxdr_unsigned(u_long,(a))&0x7]
  238 #define nfsv3tov_type(a)        nv3tov_type[fxdr_unsigned(u_long,(a))&0x7]
  239 
  240 /* File types */
  241 typedef enum { NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5,
  242         NFSOCK=6, NFFIFO=7 } nfstype;
  243 
  244 /* Structs for common parts of the rpc's */
  245 /*
  246  * File Handle (32 bytes for version 2), variable up to 64 for version 3.
  247  * File Handles of up to NFS_SMALLFH in size are stored directly in the
  248  * nfs node, whereas larger ones are malloc'd. (This never happens when
  249  * NFS_SMALLFH is set to 64.)
  250  * NFS_SMALLFH should be in the range of 32 to 64 and be divisible by 4.
  251  */
  252 #ifndef NFS_SMALLFH
  253 #define NFS_SMALLFH     52
  254 #endif
  255 union nfsfh {
  256         fhandle_t       fh_generic;
  257         u_char          fh_bytes[NFS_SMALLFH];
  258 };
  259 typedef union nfsfh nfsfh_t;
  260 
  261 struct nfsv2_time {
  262         u_long  nfsv2_sec;
  263         u_long  nfsv2_usec;
  264 };
  265 typedef struct nfsv2_time       nfstime2;
  266 
  267 struct nfsv3_time {
  268         u_long  nfsv3_sec;
  269         u_long  nfsv3_nsec;
  270 };
  271 typedef struct nfsv3_time       nfstime3;
  272 
  273 /*
  274  * Quads are defined as arrays of 2 longs to ensure dense packing for the
  275  * protocol and to facilitate xdr conversion.
  276  */
  277 struct nfs_uquad {
  278         u_long  nfsuquad[2];
  279 };
  280 typedef struct nfs_uquad        nfsuint64;
  281 
  282 /*
  283  * Used to convert between two u_longs and a u_quad_t.
  284  */
  285 union nfs_quadconvert {
  286         u_long          lval[2];
  287         u_quad_t        qval;
  288 };
  289 typedef union nfs_quadconvert   nfsquad_t;
  290 
  291 /*
  292  * NFS Version 3 special file number.
  293  */
  294 struct nfsv3_spec {
  295         u_long  specdata1;
  296         u_long  specdata2;
  297 };
  298 typedef struct nfsv3_spec       nfsv3spec;
  299 
  300 /*
  301  * File attributes and setable attributes. These structures cover both
  302  * NFS version 2 and the version 3 protocol. Note that the union is only
  303  * used so that one pointer can refer to both variants. These structures
  304  * go out on the wire and must be densely packed, so no quad data types
  305  * are used. (all fields are longs or u_longs or structures of same)
  306  * NB: You can't do sizeof(struct nfs_fattr), you must use the
  307  *     NFSX_FATTR(v3) macro.
  308  */
  309 struct nfs_fattr {
  310         u_long  fa_type;
  311         u_long  fa_mode;
  312         u_long  fa_nlink;
  313         u_long  fa_uid;
  314         u_long  fa_gid;
  315         union {
  316                 struct {
  317                         u_long          nfsv2fa_size;
  318                         u_long          nfsv2fa_blocksize;
  319                         u_long          nfsv2fa_rdev;
  320                         u_long          nfsv2fa_blocks;
  321                         u_long          nfsv2fa_fsid;
  322                         u_long          nfsv2fa_fileid;
  323                         nfstime2        nfsv2fa_atime;
  324                         nfstime2        nfsv2fa_mtime;
  325                         nfstime2        nfsv2fa_ctime;
  326                 } fa_nfsv2;
  327                 struct {
  328                         nfsuint64       nfsv3fa_size;
  329                         nfsuint64       nfsv3fa_used;
  330                         nfsv3spec       nfsv3fa_rdev;
  331                         nfsuint64       nfsv3fa_fsid;
  332                         nfsuint64       nfsv3fa_fileid;
  333                         nfstime3        nfsv3fa_atime;
  334                         nfstime3        nfsv3fa_mtime;
  335                         nfstime3        nfsv3fa_ctime;
  336                 } fa_nfsv3;
  337         } fa_un;
  338 };
  339 
  340 /* and some ugly defines for accessing union components */
  341 #define fa2_size                fa_un.fa_nfsv2.nfsv2fa_size
  342 #define fa2_blocksize           fa_un.fa_nfsv2.nfsv2fa_blocksize
  343 #define fa2_rdev                fa_un.fa_nfsv2.nfsv2fa_rdev
  344 #define fa2_blocks              fa_un.fa_nfsv2.nfsv2fa_blocks
  345 #define fa2_fsid                fa_un.fa_nfsv2.nfsv2fa_fsid
  346 #define fa2_fileid              fa_un.fa_nfsv2.nfsv2fa_fileid
  347 #define fa2_atime               fa_un.fa_nfsv2.nfsv2fa_atime
  348 #define fa2_mtime               fa_un.fa_nfsv2.nfsv2fa_mtime
  349 #define fa2_ctime               fa_un.fa_nfsv2.nfsv2fa_ctime
  350 #define fa3_size                fa_un.fa_nfsv3.nfsv3fa_size
  351 #define fa3_used                fa_un.fa_nfsv3.nfsv3fa_used
  352 #define fa3_rdev                fa_un.fa_nfsv3.nfsv3fa_rdev
  353 #define fa3_fsid                fa_un.fa_nfsv3.nfsv3fa_fsid
  354 #define fa3_fileid              fa_un.fa_nfsv3.nfsv3fa_fileid
  355 #define fa3_atime               fa_un.fa_nfsv3.nfsv3fa_atime
  356 #define fa3_mtime               fa_un.fa_nfsv3.nfsv3fa_mtime
  357 #define fa3_ctime               fa_un.fa_nfsv3.nfsv3fa_ctime
  358 
  359 struct nfsv2_sattr {
  360         u_long          sa_mode;
  361         u_long          sa_uid;
  362         u_long          sa_gid;
  363         u_long          sa_size;
  364         nfstime2        sa_atime;
  365         nfstime2        sa_mtime;
  366 };
  367 
  368 /*
  369  * NFS Version 3 sattr structure for the new node creation case.
  370  */
  371 struct nfsv3_sattr {
  372         u_long          sa_modetrue;
  373         u_long          sa_mode;
  374         u_long          sa_uidtrue;
  375         u_long          sa_uid;
  376         u_long          sa_gidtrue;
  377         u_long          sa_gid;
  378         u_long          sa_sizefalse;
  379         u_long          sa_atimetype;
  380         nfstime3        sa_atime;
  381         u_long          sa_mtimetype;
  382         nfstime3        sa_mtime;
  383 };
  384 
  385 struct nfs_statfs {
  386         union {
  387                 struct {
  388                         u_long          nfsv2sf_tsize;
  389                         u_long          nfsv2sf_bsize;
  390                         u_long          nfsv2sf_blocks;
  391                         u_long          nfsv2sf_bfree;
  392                         u_long          nfsv2sf_bavail;
  393                 } sf_nfsv2;
  394                 struct {
  395                         nfsuint64       nfsv3sf_tbytes;
  396                         nfsuint64       nfsv3sf_fbytes;
  397                         nfsuint64       nfsv3sf_abytes;
  398                         nfsuint64       nfsv3sf_tfiles;
  399                         nfsuint64       nfsv3sf_ffiles;
  400                         nfsuint64       nfsv3sf_afiles;
  401                         u_long          nfsv3sf_invarsec;
  402                 } sf_nfsv3;
  403         } sf_un;
  404 };
  405 
  406 #define sf_tsize        sf_un.sf_nfsv2.nfsv2sf_tsize
  407 #define sf_bsize        sf_un.sf_nfsv2.nfsv2sf_bsize
  408 #define sf_blocks       sf_un.sf_nfsv2.nfsv2sf_blocks
  409 #define sf_bfree        sf_un.sf_nfsv2.nfsv2sf_bfree
  410 #define sf_bavail       sf_un.sf_nfsv2.nfsv2sf_bavail
  411 #define sf_tbytes       sf_un.sf_nfsv3.nfsv3sf_tbytes
  412 #define sf_fbytes       sf_un.sf_nfsv3.nfsv3sf_fbytes
  413 #define sf_abytes       sf_un.sf_nfsv3.nfsv3sf_abytes
  414 #define sf_tfiles       sf_un.sf_nfsv3.nfsv3sf_tfiles
  415 #define sf_ffiles       sf_un.sf_nfsv3.nfsv3sf_ffiles
  416 #define sf_afiles       sf_un.sf_nfsv3.nfsv3sf_afiles
  417 #define sf_invarsec     sf_un.sf_nfsv3.nfsv3sf_invarsec
  418 
  419 struct nfsv3_fsinfo {
  420         u_long          fs_rtmax;
  421         u_long          fs_rtpref;
  422         u_long          fs_rtmult;
  423         u_long          fs_wtmax;
  424         u_long          fs_wtpref;
  425         u_long          fs_wtmult;
  426         u_long          fs_dtpref;
  427         nfsuint64       fs_maxfilesize;
  428         nfstime3        fs_timedelta;
  429         u_long          fs_properties;
  430 };
  431 
  432 struct nfsv3_pathconf {
  433         u_long          pc_linkmax;
  434         u_long          pc_namemax;
  435         u_long          pc_notrunc;
  436         u_long          pc_chownrestricted;
  437         u_long          pc_caseinsensitive;
  438         u_long          pc_casepreserving;
  439 };
  440 
  441 #endif

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