sys/vfs/nfs/nfsproto.h

   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  8.2 (Berkeley) 3/30/95
  37  * $FreeBSD: src/sys/nfs/nfsproto.h,v 1.7 1999/08/28 00:50:03 peter Exp $
  38  * $DragonFly: src/sys/vfs/nfs/nfsproto.h,v 1.3 2004/03/08 23:52:53 dillon Exp $
  39  */
  40
  41 #ifndef _NFS_NFSPROTO_H_
  42 #define _NFS_NFSPROTO_H_
  43
  44 /*
  45  * nfs definitions as per the Version 2 and 3 specs
  46  */
  47
  48 /*
  49  * Constants as defined in the Sun NFS Version 2 and 3 specs.
  50  * "NFS: Network File System Protocol Specification" RFC1094
  51  * and in the "NFS: Network File System Version 3 Protocol
  52  * Specification"
  53  */
  54
  55 #define NFS_PORT        2049
  56 #define NFS_PROG        100003
  57 #define NFS_VER2        2
  58 #define NFS_VER3        3
  59 #define NFS_V2MAXDATA   8192
  60 #define NFS_MAXDGRAMDATA 16384
  61 #define NFS_MAXDATA     32768
  62 #define NFS_MAXPATHLEN  1024
  63 #define NFS_MAXNAMLEN   255
  64 #define NFS_MAXPKTHDR   404
  65 #define NFS_MAXPACKET   (NFS_MAXPKTHDR + NFS_MAXDATA)
  66 #define NFS_MINPACKET   20
  67 #define NFS_FABLKSIZE   512     /* Size in bytes of a block wrt fa_blocks */
  68
  69 /* Stat numbers for rpc returns (version 2 and 3) */
  70 #define NFS_OK                  0
  71 #define NFSERR_PERM             1
  72 #define NFSERR_NOENT            2
  73 #define NFSERR_IO               5
  74 #define NFSERR_NXIO             6
  75 #define NFSERR_ACCES            13
  76 #define NFSERR_EXIST            17
  77 #define NFSERR_XDEV             18      /* Version 3 only */
  78 #define NFSERR_NODEV            19
  79 #define NFSERR_NOTDIR           20
  80 #define NFSERR_ISDIR            21
  81 #define NFSERR_INVAL            22      /* Version 3 only */
  82 #define NFSERR_FBIG             27
  83 #define NFSERR_NOSPC            28
  84 #define NFSERR_ROFS             30
  85 #define NFSERR_MLINK            31      /* Version 3 only */
  86 #define NFSERR_NAMETOL          63
  87 #define NFSERR_NOTEMPTY         66
  88 #define NFSERR_DQUOT            69
  89 #define NFSERR_STALE            70
  90 #define NFSERR_REMOTE           71      /* Version 3 only */
  91 #define NFSERR_WFLUSH           99      /* Version 2 only */
  92 #define NFSERR_BADHANDLE        10001   /* The rest Version 3 only */
  93 #define NFSERR_NOT_SYNC         10002
  94 #define NFSERR_BAD_COOKIE       10003
  95 #define NFSERR_NOTSUPP          10004
  96 #define NFSERR_TOOSMALL         10005
  97 #define NFSERR_SERVERFAULT      10006
  98 #define NFSERR_BADTYPE          10007
  99 #define NFSERR_JUKEBOX          10008
 100 #define NFSERR_TRYLATER         NFSERR_JUKEBOX
 101 #define NFSERR_STALEWRITEVERF   30001   /* Fake return for nfs_commit() */
 102
 103 #define NFSERR_RETVOID          0x20000000 /* Return void, not error */
 104 #define NFSERR_AUTHERR          0x40000000 /* Mark an authentication error */
 105 #define NFSERR_RETERR           0x80000000 /* Mark an error return for V3 */
 106
 107 /* Sizes in bytes of various nfs rpc components */
 108 #define NFSX_UNSIGNED   4
 109
 110 /* specific to NFS Version 2 */
 111 #define NFSX_V2FH       32
 112 #define NFSX_V2FATTR    68
 113 #define NFSX_V2SATTR    32
 114 #define NFSX_V2COOKIE   4
 115 #define NFSX_V2STATFS   20
 116
 117 /* specific to NFS Version 3 */
 118 #define NFSX_V3FH               (sizeof (fhandle_t)) /* size this server uses */
 119 #define NFSX_V3FHMAX            64      /* max. allowed by protocol */
 120 #define NFSX_V3FATTR            84
 121 #define NFSX_V3SATTR            60      /* max. all fields filled in */
 122 #define NFSX_V3SRVSATTR         (sizeof (struct nfsv3_sattr))
 123 #define NFSX_V3POSTOPATTR       (NFSX_V3FATTR + NFSX_UNSIGNED)
 124 #define NFSX_V3WCCDATA          (NFSX_V3POSTOPATTR + 8 * NFSX_UNSIGNED)
 125 #define NFSX_V3COOKIEVERF       8
 126 #define NFSX_V3WRITEVERF        8
 127 #define NFSX_V3CREATEVERF       8
 128 #define NFSX_V3STATFS           52
 129 #define NFSX_V3FSINFO           48
 130 #define NFSX_V3PATHCONF         24
 131
 132 /* variants for both versions */
 133 #define NFSX_FH(v3)             ((v3) ? (NFSX_V3FHMAX + NFSX_UNSIGNED) : \
 134                                         NFSX_V2FH)
 135 #define NFSX_SRVFH(v3)          ((v3) ? NFSX_V3FH : NFSX_V2FH)
 136 #define NFSX_FATTR(v3)          ((v3) ? NFSX_V3FATTR : NFSX_V2FATTR)
 137 #define NFSX_PREOPATTR(v3)      ((v3) ? (7 * NFSX_UNSIGNED) : 0)
 138 #define NFSX_POSTOPATTR(v3)     ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : 0)
 139 #define NFSX_POSTOPORFATTR(v3)  ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : \
 140                                         NFSX_V2FATTR)
 141 #define NFSX_WCCDATA(v3)        ((v3) ? NFSX_V3WCCDATA : 0)
 142 #define NFSX_WCCORFATTR(v3)     ((v3) ? NFSX_V3WCCDATA : NFSX_V2FATTR)
 143 #define NFSX_SATTR(v3)          ((v3) ? NFSX_V3SATTR : NFSX_V2SATTR)
 144 #define NFSX_COOKIEVERF(v3)     ((v3) ? NFSX_V3COOKIEVERF : 0)
 145 #define NFSX_WRITEVERF(v3)      ((v3) ? NFSX_V3WRITEVERF : 0)
 146 #define NFSX_READDIR(v3)        ((v3) ? (5 * NFSX_UNSIGNED) : \
 147                                         (2 * NFSX_UNSIGNED))
 148 #define NFSX_STATFS(v3)         ((v3) ? NFSX_V3STATFS : NFSX_V2STATFS)
 149
 150 /* nfs rpc procedure numbers (before version mapping) */
 151 #define NFSPROC_NULL            0
 152 #define NFSPROC_GETATTR         1
 153 #define NFSPROC_SETATTR         2
 154 #define NFSPROC_LOOKUP          3
 155 #define NFSPROC_ACCESS          4
 156 #define NFSPROC_READLINK        5
 157 #define NFSPROC_READ            6
 158 #define NFSPROC_WRITE           7
 159 #define NFSPROC_CREATE          8
 160 #define NFSPROC_MKDIR           9
 161 #define NFSPROC_SYMLINK         10
 162 #define NFSPROC_MKNOD           11
 163 #define NFSPROC_REMOVE          12
 164 #define NFSPROC_RMDIR           13
 165 #define NFSPROC_RENAME          14
 166 #define NFSPROC_LINK            15
 167 #define NFSPROC_READDIR         16
 168 #define NFSPROC_READDIRPLUS     17
 169 #define NFSPROC_FSSTAT          18
 170 #define NFSPROC_FSINFO          19
 171 #define NFSPROC_PATHCONF        20
 172 #define NFSPROC_COMMIT          21
 173
 174 /* And leasing (nqnfs) procedure numbers (must be last) */
 175 #define NQNFSPROC_GETLEASE      22
 176 #define NQNFSPROC_VACATED       23
 177 #define NQNFSPROC_EVICTED       24
 178
 179 #define NFSPROC_NOOP            25
 180 #define NFS_NPROCS              26
 181
 182 /* Actual Version 2 procedure numbers */
 183 #define NFSV2PROC_NULL          0
 184 #define NFSV2PROC_GETATTR       1
 185 #define NFSV2PROC_SETATTR       2
 186 #define NFSV2PROC_NOOP          3
 187 #define NFSV2PROC_ROOT          NFSV2PROC_NOOP  /* Obsolete */
 188 #define NFSV2PROC_LOOKUP        4
 189 #define NFSV2PROC_READLINK      5
 190 #define NFSV2PROC_READ          6
 191 #define NFSV2PROC_WRITECACHE    NFSV2PROC_NOOP  /* Obsolete */
 192 #define NFSV2PROC_WRITE         8
 193 #define NFSV2PROC_CREATE        9
 194 #define NFSV2PROC_REMOVE        10
 195 #define NFSV2PROC_RENAME        11
 196 #define NFSV2PROC_LINK          12
 197 #define NFSV2PROC_SYMLINK       13
 198 #define NFSV2PROC_MKDIR         14
 199 #define NFSV2PROC_RMDIR         15
 200 #define NFSV2PROC_READDIR       16
 201 #define NFSV2PROC_STATFS        17
 202
 203 /*
 204  * Constants used by the Version 3 protocol for various RPCs
 205  */
 206 #define NFSV3SATTRTIME_DONTCHANGE       0
 207 #define NFSV3SATTRTIME_TOSERVER         1
 208 #define NFSV3SATTRTIME_TOCLIENT         2
 209
 210 #define NFSV3ACCESS_READ                0x01
 211 #define NFSV3ACCESS_LOOKUP              0x02
 212 #define NFSV3ACCESS_MODIFY              0x04
 213 #define NFSV3ACCESS_EXTEND              0x08
 214 #define NFSV3ACCESS_DELETE              0x10
 215 #define NFSV3ACCESS_EXECUTE             0x20
 216
 217 #define NFSV3WRITE_UNSTABLE             0
 218 #define NFSV3WRITE_DATASYNC             1
 219 #define NFSV3WRITE_FILESYNC             2
 220
 221 #define NFSV3CREATE_UNCHECKED           0
 222 #define NFSV3CREATE_GUARDED             1
 223 #define NFSV3CREATE_EXCLUSIVE           2
 224
 225 #define NFSV3FSINFO_LINK                0x01
 226 #define NFSV3FSINFO_SYMLINK             0x02
 227 #define NFSV3FSINFO_HOMOGENEOUS         0x08
 228 #define NFSV3FSINFO_CANSETTIME          0x10
 229
 230 /* Conversion macros */
 231 #define vtonfsv2_mode(t,m) \
 232                 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
 233                                 MAKEIMODE((t), (m)))
 234 #define vtonfsv3_mode(m)        txdr_unsigned((m) & ALLPERMS)
 235 #define nfstov_mode(a)          (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS)
 236 #define vtonfsv2_type(a)        txdr_unsigned(nfsv2_type[((int32_t)(a))])
 237 #define vtonfsv3_type(a)        txdr_unsigned(nfsv3_type[((int32_t)(a))])
 238 #define nfsv2tov_type(a)        nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
 239 #define nfsv3tov_type(a)        nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
 240
 241 /* File types */
 242 typedef enum { NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5,
 243         NFSOCK=6, NFFIFO=7 } nfstype;
 244
 245 /* Structs for common parts of the rpc's */
 246 /*
 247  * File Handle (32 bytes for version 2), variable up to 64 for version 3.
 248  * File Handles of up to NFS_SMALLFH in size are stored directly in the
 249  * nfs node, whereas larger ones are malloc'd. (This never happens when
 250  * NFS_SMALLFH is set to 64.)
 251  * NFS_SMALLFH should be in the range of 32 to 64 and be divisible by 4.
 252  */
 253 #ifndef NFS_SMALLFH
 254 #define NFS_SMALLFH     64
 255 #endif
 256 union nfsfh {
 257         fhandle_t       fh_generic;
 258         u_char          fh_bytes[NFS_SMALLFH];
 259 };
 260 typedef union nfsfh nfsfh_t;
 261
 262 struct nfsv2_time {
 263         u_int32_t       nfsv2_sec;
 264         u_int32_t       nfsv2_usec;
 265 };
 266 typedef struct nfsv2_time       nfstime2;
 267
 268 struct nfsv3_time {
 269         u_int32_t       nfsv3_sec;
 270         u_int32_t       nfsv3_nsec;
 271 };
 272 typedef struct nfsv3_time       nfstime3;
 273
 274 /*
 275  * Quads are defined as arrays of 2 longs to ensure dense packing for the
 276  * protocol and to facilitate xdr conversion.
 277  */
 278 struct nfs_uquad {
 279         u_int32_t       nfsuquad[2];
 280 };
 281 typedef struct nfs_uquad        nfsuint64;
 282
 283 /*
 284  * Used to convert between two u_longs and a u_quad_t.
 285  */
 286 union nfs_quadconvert {
 287         u_int32_t       lval[2];
 288         u_quad_t        qval;
 289 };
 290 typedef union nfs_quadconvert   nfsquad_t;
 291
 292 /*
 293  * NFS Version 3 special file number.
 294  */
 295 struct nfsv3_spec {
 296         u_int32_t       specdata1;
 297         u_int32_t       specdata2;
 298 };
 299 typedef struct nfsv3_spec       nfsv3spec;
 300
 301 /*
 302  * File attributes and setable attributes. These structures cover both
 303  * NFS version 2 and the version 3 protocol. Note that the union is only
 304  * used so that one pointer can refer to both variants. These structures
 305  * go out on the wire and must be densely packed, so no quad data types
 306  * are used. (all fields are longs or u_longs or structures of same)
 307  * NB: You can't do sizeof(struct nfs_fattr), you must use the
 308  *     NFSX_FATTR(v3) macro.
 309  */
 310 struct nfs_fattr {
 311         u_int32_t       fa_type;
 312         u_int32_t       fa_mode;
 313         u_int32_t       fa_nlink;
 314         u_int32_t       fa_uid;
 315         u_int32_t       fa_gid;
 316         union {
 317                 struct {
 318                         u_int32_t       nfsv2fa_size;
 319                         u_int32_t       nfsv2fa_blocksize;
 320                         u_int32_t       nfsv2fa_rdev;
 321                         u_int32_t       nfsv2fa_blocks;
 322                         u_int32_t       nfsv2fa_fsid;
 323                         u_int32_t       nfsv2fa_fileid;
 324                         nfstime2        nfsv2fa_atime;
 325                         nfstime2        nfsv2fa_mtime;
 326                         nfstime2        nfsv2fa_ctime;
 327                 } fa_nfsv2;
 328                 struct {
 329                         nfsuint64       nfsv3fa_size;
 330                         nfsuint64       nfsv3fa_used;
 331                         nfsv3spec       nfsv3fa_rdev;
 332                         nfsuint64       nfsv3fa_fsid;
 333                         nfsuint64       nfsv3fa_fileid;
 334                         nfstime3        nfsv3fa_atime;
 335                         nfstime3        nfsv3fa_mtime;
 336                         nfstime3        nfsv3fa_ctime;
 337                 } fa_nfsv3;
 338         } fa_un;
 339 };
 340
 341 /* and some ugly defines for accessing union components */
 342 #define fa2_size                fa_un.fa_nfsv2.nfsv2fa_size
 343 #define fa2_blocksize           fa_un.fa_nfsv2.nfsv2fa_blocksize
 344 #define fa2_rdev                fa_un.fa_nfsv2.nfsv2fa_rdev
 345 #define fa2_blocks              fa_un.fa_nfsv2.nfsv2fa_blocks
 346 #define fa2_fsid                fa_un.fa_nfsv2.nfsv2fa_fsid
 347 #define fa2_fileid              fa_un.fa_nfsv2.nfsv2fa_fileid
 348 #define fa2_atime               fa_un.fa_nfsv2.nfsv2fa_atime
 349 #define fa2_mtime               fa_un.fa_nfsv2.nfsv2fa_mtime
 350 #define fa2_ctime               fa_un.fa_nfsv2.nfsv2fa_ctime
 351 #define fa3_size                fa_un.fa_nfsv3.nfsv3fa_size
 352 #define fa3_used                fa_un.fa_nfsv3.nfsv3fa_used
 353 #define fa3_rdev                fa_un.fa_nfsv3.nfsv3fa_rdev
 354 #define fa3_fsid                fa_un.fa_nfsv3.nfsv3fa_fsid
 355 #define fa3_fileid              fa_un.fa_nfsv3.nfsv3fa_fileid
 356 #define fa3_atime               fa_un.fa_nfsv3.nfsv3fa_atime
 357 #define fa3_mtime               fa_un.fa_nfsv3.nfsv3fa_mtime
 358 #define fa3_ctime               fa_un.fa_nfsv3.nfsv3fa_ctime
 359
 360 struct nfsv2_sattr {
 361         u_int32_t       sa_mode;
 362         u_int32_t       sa_uid;
 363         u_int32_t       sa_gid;
 364         u_int32_t       sa_size;
 365         nfstime2        sa_atime;
 366         nfstime2        sa_mtime;
 367 };
 368
 369 /*
 370  * NFS Version 3 sattr structure for the new node creation case.
 371  */
 372 struct nfsv3_sattr {
 373         u_int32_t       sa_modetrue;
 374         u_int32_t       sa_mode;
 375         u_int32_t       sa_uidfalse;
 376         u_int32_t       sa_gidfalse;
 377         u_int32_t       sa_sizefalse;
 378         u_int32_t       sa_atimetype;
 379         nfstime3        sa_atime;
 380         u_int32_t       sa_mtimetype;
 381         nfstime3        sa_mtime;
 382 };
 383
 384 struct nfs_statfs {
 385         union {
 386                 struct {
 387                         u_int32_t       nfsv2sf_tsize;
 388                         u_int32_t       nfsv2sf_bsize;
 389                         u_int32_t       nfsv2sf_blocks;
 390                         u_int32_t       nfsv2sf_bfree;
 391                         u_int32_t       nfsv2sf_bavail;
 392                 } sf_nfsv2;
 393                 struct {
 394                         nfsuint64       nfsv3sf_tbytes;
 395                         nfsuint64       nfsv3sf_fbytes;
 396                         nfsuint64       nfsv3sf_abytes;
 397                         nfsuint64       nfsv3sf_tfiles;
 398                         nfsuint64       nfsv3sf_ffiles;
 399                         nfsuint64       nfsv3sf_afiles;
 400                         u_int32_t       nfsv3sf_invarsec;
 401                 } sf_nfsv3;
 402         } sf_un;
 403 };
 404
 405 #define sf_tsize        sf_un.sf_nfsv2.nfsv2sf_tsize
 406 #define sf_bsize        sf_un.sf_nfsv2.nfsv2sf_bsize
 407 #define sf_blocks       sf_un.sf_nfsv2.nfsv2sf_blocks
 408 #define sf_bfree        sf_un.sf_nfsv2.nfsv2sf_bfree
 409 #define sf_bavail       sf_un.sf_nfsv2.nfsv2sf_bavail
 410 #define sf_tbytes       sf_un.sf_nfsv3.nfsv3sf_tbytes
 411 #define sf_fbytes       sf_un.sf_nfsv3.nfsv3sf_fbytes
 412 #define sf_abytes       sf_un.sf_nfsv3.nfsv3sf_abytes
 413 #define sf_tfiles       sf_un.sf_nfsv3.nfsv3sf_tfiles
 414 #define sf_ffiles       sf_un.sf_nfsv3.nfsv3sf_ffiles
 415 #define sf_afiles       sf_un.sf_nfsv3.nfsv3sf_afiles
 416 #define sf_invarsec     sf_un.sf_nfsv3.nfsv3sf_invarsec
 417
 418 struct nfsv3_fsinfo {
 419         u_int32_t       fs_rtmax;
 420         u_int32_t       fs_rtpref;
 421         u_int32_t       fs_rtmult;
 422         u_int32_t       fs_wtmax;
 423         u_int32_t       fs_wtpref;
 424         u_int32_t       fs_wtmult;
 425         u_int32_t       fs_dtpref;
 426         nfsuint64       fs_maxfilesize;
 427         nfstime3        fs_timedelta;
 428         u_int32_t       fs_properties;
 429 };
 430
 431 struct nfsv3_pathconf {
 432         u_int32_t       pc_linkmax;
 433         u_int32_t       pc_namemax;
 434         u_int32_t       pc_notrunc;
 435         u_int32_t       pc_chownrestricted;
 436         u_int32_t       pc_caseinsensitive;
 437         u_int32_t       pc_casepreserving;
 438 };
 439
 440 #endif