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. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  *      @(#)nfsproto.h  8.2 (Berkeley) 3/30/95
  33  * $FreeBSD: src/sys/nfs/nfsproto.h,v 1.7 1999/08/28 00:50:03 peter Exp $
  34  * $DragonFly: src/sys/vfs/nfs/nfsproto.h,v 1.3 2004/03/08 23:52:53 dillon Exp $
  35  */
  36
  37 #ifndef _NFS_NFSPROTO_H_
  38 #define _NFS_NFSPROTO_H_
  39
  40 /*
  41  * nfs definitions as per the Version 2 and 3 specs
  42  */
  43
  44 /*
  45  * Constants as defined in the Sun NFS Version 2 and 3 specs.
  46  * "NFS: Network File System Protocol Specification" RFC1094
  47  * and in the "NFS: Network File System Version 3 Protocol
  48  * Specification"
  49  */
  50
  51 #define NFS_PORT        2049
  52 #define NFS_PROG        100003
  53 #define NFS_VER2        2
  54 #define NFS_VER3        3
  55 #define NFS_V2MAXDATA   8192
  56 #define NFS_MAXDGRAMDATA 16384
  57 #define NFS_MAXDATA     32768
  58 #define NFS_MAXPATHLEN  1024
  59 #define NFS_MAXNAMLEN   255
  60 #define NFS_MAXPKTHDR   404
  61 #define NFS_MAXPACKET   (NFS_MAXPKTHDR + NFS_MAXDATA)
  62 #define NFS_MINPACKET   20
  63 #define NFS_FABLKSIZE   512     /* Size in bytes of a block wrt fa_blocks */
  64
  65 /* Stat numbers for rpc returns (version 2 and 3) */
  66 #define NFS_OK                  0
  67 #define NFSERR_PERM             1
  68 #define NFSERR_NOENT            2
  69 #define NFSERR_IO               5
  70 #define NFSERR_NXIO             6
  71 #define NFSERR_ACCES            13
  72 #define NFSERR_EXIST            17
  73 #define NFSERR_XDEV             18      /* Version 3 only */
  74 #define NFSERR_NODEV            19
  75 #define NFSERR_NOTDIR           20
  76 #define NFSERR_ISDIR            21
  77 #define NFSERR_INVAL            22      /* Version 3 only */
  78 #define NFSERR_FBIG             27
  79 #define NFSERR_NOSPC            28
  80 #define NFSERR_ROFS             30
  81 #define NFSERR_MLINK            31      /* Version 3 only */
  82 #define NFSERR_NAMETOL          63
  83 #define NFSERR_NOTEMPTY         66
  84 #define NFSERR_DQUOT            69
  85 #define NFSERR_STALE            70
  86 #define NFSERR_REMOTE           71      /* Version 3 only */
  87 #define NFSERR_WFLUSH           99      /* Version 2 only */
  88 #define NFSERR_BADHANDLE        10001   /* The rest Version 3 only */
  89 #define NFSERR_NOT_SYNC         10002
  90 #define NFSERR_BAD_COOKIE       10003
  91 #define NFSERR_NOTSUPP          10004
  92 #define NFSERR_TOOSMALL         10005
  93 #define NFSERR_SERVERFAULT      10006
  94 #define NFSERR_BADTYPE          10007
  95 #define NFSERR_JUKEBOX          10008
  96 #define NFSERR_TRYLATER         NFSERR_JUKEBOX
  97 #define NFSERR_STALEWRITEVERF   30001   /* Fake return for nfs_commit() */
  98
  99 #define NFSERR_RETVOID          0x20000000 /* Return void, not error */
 100 #define NFSERR_AUTHERR          0x40000000 /* Mark an authentication error */
 101 #define NFSERR_RETERR           0x80000000 /* Mark an error return for V3 */
 102
 103 /* Sizes in bytes of various nfs rpc components */
 104 #define NFSX_UNSIGNED   4
 105
 106 /* specific to NFS Version 2 */
 107 #define NFSX_V2FH       32
 108 #define NFSX_V2FATTR    68
 109 #define NFSX_V2SATTR    32
 110 #define NFSX_V2COOKIE   4
 111 #define NFSX_V2STATFS   20
 112
 113 /* specific to NFS Version 3 */
 114 #define NFSX_V3FH               (sizeof (fhandle_t)) /* size this server uses */
 115 #define NFSX_V3FHMAX            64      /* max. allowed by protocol */
 116 #define NFSX_V3FATTR            84
 117 #define NFSX_V3SATTR            60      /* max. all fields filled in */
 118 #define NFSX_V3SRVSATTR         (sizeof (struct nfsv3_sattr))
 119 #define NFSX_V3POSTOPATTR       (NFSX_V3FATTR + NFSX_UNSIGNED)
 120 #define NFSX_V3WCCDATA          (NFSX_V3POSTOPATTR + 8 * NFSX_UNSIGNED)
 121 #define NFSX_V3COOKIEVERF       8
 122 #define NFSX_V3WRITEVERF        8
 123 #define NFSX_V3CREATEVERF       8
 124 #define NFSX_V3STATFS           52
 125 #define NFSX_V3FSINFO           48
 126 #define NFSX_V3PATHCONF         24
 127
 128 /* variants for both versions */
 129 #define NFSX_FH(v3)             ((v3) ? (NFSX_V3FHMAX + NFSX_UNSIGNED) : \
 130                                         NFSX_V2FH)
 131 #define NFSX_SRVFH(v3)          ((v3) ? NFSX_V3FH : NFSX_V2FH)
 132 #define NFSX_FATTR(v3)          ((v3) ? NFSX_V3FATTR : NFSX_V2FATTR)
 133 #define NFSX_PREOPATTR(v3)      ((v3) ? (7 * NFSX_UNSIGNED) : 0)
 134 #define NFSX_POSTOPATTR(v3)     ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : 0)
 135 #define NFSX_POSTOPORFATTR(v3)  ((v3) ? (NFSX_V3FATTR + NFSX_UNSIGNED) : \
 136                                         NFSX_V2FATTR)
 137 #define NFSX_WCCDATA(v3)        ((v3) ? NFSX_V3WCCDATA : 0)
 138 #define NFSX_WCCORFATTR(v3)     ((v3) ? NFSX_V3WCCDATA : NFSX_V2FATTR)
 139 #define NFSX_SATTR(v3)          ((v3) ? NFSX_V3SATTR : NFSX_V2SATTR)
 140 #define NFSX_COOKIEVERF(v3)     ((v3) ? NFSX_V3COOKIEVERF : 0)
 141 #define NFSX_WRITEVERF(v3)      ((v3) ? NFSX_V3WRITEVERF : 0)
 142 #define NFSX_READDIR(v3)        ((v3) ? (5 * NFSX_UNSIGNED) : \
 143                                         (2 * NFSX_UNSIGNED))
 144 #define NFSX_STATFS(v3)         ((v3) ? NFSX_V3STATFS : NFSX_V2STATFS)
 145
 146 /* nfs rpc procedure numbers (before version mapping) */
 147 #define NFSPROC_NULL            0
 148 #define NFSPROC_GETATTR         1
 149 #define NFSPROC_SETATTR         2
 150 #define NFSPROC_LOOKUP          3
 151 #define NFSPROC_ACCESS          4
 152 #define NFSPROC_READLINK        5
 153 #define NFSPROC_READ            6
 154 #define NFSPROC_WRITE           7
 155 #define NFSPROC_CREATE          8
 156 #define NFSPROC_MKDIR           9
 157 #define NFSPROC_SYMLINK         10
 158 #define NFSPROC_MKNOD           11
 159 #define NFSPROC_REMOVE          12
 160 #define NFSPROC_RMDIR           13
 161 #define NFSPROC_RENAME          14
 162 #define NFSPROC_LINK            15
 163 #define NFSPROC_READDIR         16
 164 #define NFSPROC_READDIRPLUS     17
 165 #define NFSPROC_FSSTAT          18
 166 #define NFSPROC_FSINFO          19
 167 #define NFSPROC_PATHCONF        20
 168 #define NFSPROC_COMMIT          21
 169
 170 /* And leasing (nqnfs) procedure numbers (must be last) */
 171 #define NQNFSPROC_GETLEASE      22
 172 #define NQNFSPROC_VACATED       23
 173 #define NQNFSPROC_EVICTED       24
 174
 175 #define NFSPROC_NOOP            25
 176 #define NFS_NPROCS              26
 177
 178 /* Actual Version 2 procedure numbers */
 179 #define NFSV2PROC_NULL          0
 180 #define NFSV2PROC_GETATTR       1
 181 #define NFSV2PROC_SETATTR       2
 182 #define NFSV2PROC_NOOP          3
 183 #define NFSV2PROC_ROOT          NFSV2PROC_NOOP  /* Obsolete */
 184 #define NFSV2PROC_LOOKUP        4
 185 #define NFSV2PROC_READLINK      5
 186 #define NFSV2PROC_READ          6
 187 #define NFSV2PROC_WRITECACHE    NFSV2PROC_NOOP  /* Obsolete */
 188 #define NFSV2PROC_WRITE         8
 189 #define NFSV2PROC_CREATE        9
 190 #define NFSV2PROC_REMOVE        10
 191 #define NFSV2PROC_RENAME        11
 192 #define NFSV2PROC_LINK          12
 193 #define NFSV2PROC_SYMLINK       13
 194 #define NFSV2PROC_MKDIR         14
 195 #define NFSV2PROC_RMDIR         15
 196 #define NFSV2PROC_READDIR       16
 197 #define NFSV2PROC_STATFS        17
 198
 199 /*
 200  * Constants used by the Version 3 protocol for various RPCs
 201  */
 202 #define NFSV3SATTRTIME_DONTCHANGE       0
 203 #define NFSV3SATTRTIME_TOSERVER         1
 204 #define NFSV3SATTRTIME_TOCLIENT         2
 205
 206 #define NFSV3ACCESS_READ                0x01
 207 #define NFSV3ACCESS_LOOKUP              0x02
 208 #define NFSV3ACCESS_MODIFY              0x04
 209 #define NFSV3ACCESS_EXTEND              0x08
 210 #define NFSV3ACCESS_DELETE              0x10
 211 #define NFSV3ACCESS_EXECUTE             0x20
 212
 213 #define NFSV3WRITE_UNSTABLE             0
 214 #define NFSV3WRITE_DATASYNC             1
 215 #define NFSV3WRITE_FILESYNC             2
 216
 217 #define NFSV3CREATE_UNCHECKED           0
 218 #define NFSV3CREATE_GUARDED             1
 219 #define NFSV3CREATE_EXCLUSIVE           2
 220
 221 #define NFSV3FSINFO_LINK                0x01
 222 #define NFSV3FSINFO_SYMLINK             0x02
 223 #define NFSV3FSINFO_HOMOGENEOUS         0x08
 224 #define NFSV3FSINFO_CANSETTIME          0x10
 225
 226 /* Conversion macros */
 227 #define vtonfsv2_mode(t,m) \
 228                 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
 229                                 MAKEIMODE((t), (m)))
 230 #define vtonfsv3_mode(m)        txdr_unsigned((m) & ALLPERMS)
 231 #define nfstov_mode(a)          (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS)
 232 #define vtonfsv2_type(a)        txdr_unsigned(nfsv2_type[((int32_t)(a))])
 233 #define vtonfsv3_type(a)        txdr_unsigned(nfsv3_type[((int32_t)(a))])
 234 #define nfsv2tov_type(a)        nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
 235 #define nfsv3tov_type(a)        nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
 236
 237 /* File types */
 238 typedef enum { NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5,
 239         NFSOCK=6, NFFIFO=7 } nfstype;
 240
 241 /* Structs for common parts of the rpc's */
 242 /*
 243  * File Handle (32 bytes for version 2), variable up to 64 for version 3.
 244  * File Handles of up to NFS_SMALLFH in size are stored directly in the
 245  * nfs node, whereas larger ones are malloc'd. (This never happens when
 246  * NFS_SMALLFH is set to 64.)
 247  * NFS_SMALLFH should be in the range of 32 to 64 and be divisible by 4.
 248  */
 249 #ifndef NFS_SMALLFH
 250 #define NFS_SMALLFH     64
 251 #endif
 252 union nfsfh {
 253         fhandle_t       fh_generic;
 254         u_char          fh_bytes[NFS_SMALLFH];
 255 };
 256 typedef union nfsfh nfsfh_t;
 257
 258 struct nfsv2_time {
 259         u_int32_t       nfsv2_sec;
 260         u_int32_t       nfsv2_usec;
 261 };
 262 typedef struct nfsv2_time       nfstime2;
 263
 264 struct nfsv3_time {
 265         u_int32_t       nfsv3_sec;
 266         u_int32_t       nfsv3_nsec;
 267 };
 268 typedef struct nfsv3_time       nfstime3;
 269
 270 /*
 271  * Quads are defined as arrays of 2 longs to ensure dense packing for the
 272  * protocol and to facilitate xdr conversion.
 273  */
 274 struct nfs_uquad {
 275         u_int32_t       nfsuquad[2];
 276 };
 277 typedef struct nfs_uquad        nfsuint64;
 278
 279 /*
 280  * Used to convert between two u_longs and a u_quad_t.
 281  */
 282 union nfs_quadconvert {
 283         u_int32_t       lval[2];
 284         u_quad_t        qval;
 285 };
 286 typedef union nfs_quadconvert   nfsquad_t;
 287
 288 /*
 289  * NFS Version 3 special file number.
 290  */
 291 struct nfsv3_spec {
 292         u_int32_t       specdata1;
 293         u_int32_t       specdata2;
 294 };
 295 typedef struct nfsv3_spec       nfsv3spec;
 296
 297 /*
 298  * File attributes and setable attributes. These structures cover both
 299  * NFS version 2 and the version 3 protocol. Note that the union is only
 300  * used so that one pointer can refer to both variants. These structures
 301  * go out on the wire and must be densely packed, so no quad data types
 302  * are used. (all fields are longs or u_longs or structures of same)
 303  * NB: You can't do sizeof(struct nfs_fattr), you must use the
 304  *     NFSX_FATTR(v3) macro.
 305  */
 306 struct nfs_fattr {
 307         u_int32_t       fa_type;
 308         u_int32_t       fa_mode;
 309         u_int32_t       fa_nlink;
 310         u_int32_t       fa_uid;
 311         u_int32_t       fa_gid;
 312         union {
 313                 struct {
 314                         u_int32_t       nfsv2fa_size;
 315                         u_int32_t       nfsv2fa_blocksize;
 316                         u_int32_t       nfsv2fa_rdev;
 317                         u_int32_t       nfsv2fa_blocks;
 318                         u_int32_t       nfsv2fa_fsid;
 319                         u_int32_t       nfsv2fa_fileid;
 320                         nfstime2        nfsv2fa_atime;
 321                         nfstime2        nfsv2fa_mtime;
 322                         nfstime2        nfsv2fa_ctime;
 323                 } fa_nfsv2;
 324                 struct {
 325                         nfsuint64       nfsv3fa_size;
 326                         nfsuint64       nfsv3fa_used;
 327                         nfsv3spec       nfsv3fa_rdev;
 328                         nfsuint64       nfsv3fa_fsid;
 329                         nfsuint64       nfsv3fa_fileid;
 330                         nfstime3        nfsv3fa_atime;
 331                         nfstime3        nfsv3fa_mtime;
 332                         nfstime3        nfsv3fa_ctime;
 333                 } fa_nfsv3;
 334         } fa_un;
 335 };
 336
 337 /* and some ugly defines for accessing union components */
 338 #define fa2_size                fa_un.fa_nfsv2.nfsv2fa_size
 339 #define fa2_blocksize           fa_un.fa_nfsv2.nfsv2fa_blocksize
 340 #define fa2_rdev                fa_un.fa_nfsv2.nfsv2fa_rdev
 341 #define fa2_blocks              fa_un.fa_nfsv2.nfsv2fa_blocks
 342 #define fa2_fsid                fa_un.fa_nfsv2.nfsv2fa_fsid
 343 #define fa2_fileid              fa_un.fa_nfsv2.nfsv2fa_fileid
 344 #define fa2_atime               fa_un.fa_nfsv2.nfsv2fa_atime
 345 #define fa2_mtime               fa_un.fa_nfsv2.nfsv2fa_mtime
 346 #define fa2_ctime               fa_un.fa_nfsv2.nfsv2fa_ctime
 347 #define fa3_size                fa_un.fa_nfsv3.nfsv3fa_size
 348 #define fa3_used                fa_un.fa_nfsv3.nfsv3fa_used
 349 #define fa3_rdev                fa_un.fa_nfsv3.nfsv3fa_rdev
 350 #define fa3_fsid                fa_un.fa_nfsv3.nfsv3fa_fsid
 351 #define fa3_fileid              fa_un.fa_nfsv3.nfsv3fa_fileid
 352 #define fa3_atime               fa_un.fa_nfsv3.nfsv3fa_atime
 353 #define fa3_mtime               fa_un.fa_nfsv3.nfsv3fa_mtime
 354 #define fa3_ctime               fa_un.fa_nfsv3.nfsv3fa_ctime
 355
 356 struct nfsv2_sattr {
 357         u_int32_t       sa_mode;
 358         u_int32_t       sa_uid;
 359         u_int32_t       sa_gid;
 360         u_int32_t       sa_size;
 361         nfstime2        sa_atime;
 362         nfstime2        sa_mtime;
 363 };
 364
 365 /*
 366  * NFS Version 3 sattr structure for the new node creation case.
 367  */
 368 struct nfsv3_sattr {
 369         u_int32_t       sa_modetrue;
 370         u_int32_t       sa_mode;
 371         u_int32_t       sa_uidfalse;
 372         u_int32_t       sa_gidfalse;
 373         u_int32_t       sa_sizefalse;
 374         u_int32_t       sa_atimetype;
 375         nfstime3        sa_atime;
 376         u_int32_t       sa_mtimetype;
 377         nfstime3        sa_mtime;
 378 };
 379
 380 struct nfs_statfs {
 381         union {
 382                 struct {
 383                         u_int32_t       nfsv2sf_tsize;
 384                         u_int32_t       nfsv2sf_bsize;
 385                         u_int32_t       nfsv2sf_blocks;
 386                         u_int32_t       nfsv2sf_bfree;
 387                         u_int32_t       nfsv2sf_bavail;
 388                 } sf_nfsv2;
 389                 struct {
 390                         nfsuint64       nfsv3sf_tbytes;
 391                         nfsuint64       nfsv3sf_fbytes;
 392                         nfsuint64       nfsv3sf_abytes;
 393                         nfsuint64       nfsv3sf_tfiles;
 394                         nfsuint64       nfsv3sf_ffiles;
 395                         nfsuint64       nfsv3sf_afiles;
 396                         u_int32_t       nfsv3sf_invarsec;
 397                 } sf_nfsv3;
 398         } sf_un;
 399 };
 400
 401 #define sf_tsize        sf_un.sf_nfsv2.nfsv2sf_tsize
 402 #define sf_bsize        sf_un.sf_nfsv2.nfsv2sf_bsize
 403 #define sf_blocks       sf_un.sf_nfsv2.nfsv2sf_blocks
 404 #define sf_bfree        sf_un.sf_nfsv2.nfsv2sf_bfree
 405 #define sf_bavail       sf_un.sf_nfsv2.nfsv2sf_bavail
 406 #define sf_tbytes       sf_un.sf_nfsv3.nfsv3sf_tbytes
 407 #define sf_fbytes       sf_un.sf_nfsv3.nfsv3sf_fbytes
 408 #define sf_abytes       sf_un.sf_nfsv3.nfsv3sf_abytes
 409 #define sf_tfiles       sf_un.sf_nfsv3.nfsv3sf_tfiles
 410 #define sf_ffiles       sf_un.sf_nfsv3.nfsv3sf_ffiles
 411 #define sf_afiles       sf_un.sf_nfsv3.nfsv3sf_afiles
 412 #define sf_invarsec     sf_un.sf_nfsv3.nfsv3sf_invarsec
 413
 414 struct nfsv3_fsinfo {
 415         u_int32_t       fs_rtmax;
 416         u_int32_t       fs_rtpref;
 417         u_int32_t       fs_rtmult;
 418         u_int32_t       fs_wtmax;
 419         u_int32_t       fs_wtpref;
 420         u_int32_t       fs_wtmult;
 421         u_int32_t       fs_dtpref;
 422         nfsuint64       fs_maxfilesize;
 423         nfstime3        fs_timedelta;
 424         u_int32_t       fs_properties;
 425 };
 426
 427 struct nfsv3_pathconf {
 428         u_int32_t       pc_linkmax;
 429         u_int32_t       pc_namemax;
 430         u_int32_t       pc_notrunc;
 431         u_int32_t       pc_chownrestricted;
 432         u_int32_t       pc_caseinsensitive;
 433         u_int32_t       pc_casepreserving;
 434 };
 435
 436 #endif