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TOMOYO Linux Cross Reference
Linux/include/linux/nfs4.h

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  1 /*
  2  *  include/linux/nfs4.h
  3  *
  4  *  NFSv4 protocol definitions.
  5  *
  6  *  Copyright (c) 2002 The Regents of the University of Michigan.
  7  *  All rights reserved.
  8  *
  9  *  Kendrick Smith <kmsmith@umich.edu>
 10  *  Andy Adamson   <andros@umich.edu>
 11  */
 12 #ifndef _LINUX_NFS4_H
 13 #define _LINUX_NFS4_H
 14 
 15 #include <linux/list.h>
 16 #include <linux/uidgid.h>
 17 #include <uapi/linux/nfs4.h>
 18 
 19 struct nfs4_ace {
 20         uint32_t        type;
 21         uint32_t        flag;
 22         uint32_t        access_mask;
 23         int             whotype;
 24         union {
 25                 kuid_t  who_uid;
 26                 kgid_t  who_gid;
 27         };
 28 };
 29 
 30 struct nfs4_acl {
 31         uint32_t        naces;
 32         struct nfs4_ace aces[0];
 33 };
 34 
 35 typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier;
 36 
 37 struct nfs_stateid4 {
 38         __be32 seqid;
 39         char other[NFS4_STATEID_OTHER_SIZE];
 40 } __attribute__ ((packed));
 41 
 42 typedef struct nfs_stateid4 nfs4_stateid;
 43 
 44 enum nfs_opnum4 {
 45         OP_ACCESS = 3,
 46         OP_CLOSE = 4,
 47         OP_COMMIT = 5,
 48         OP_CREATE = 6,
 49         OP_DELEGPURGE = 7,
 50         OP_DELEGRETURN = 8,
 51         OP_GETATTR = 9,
 52         OP_GETFH = 10,
 53         OP_LINK = 11,
 54         OP_LOCK = 12,
 55         OP_LOCKT = 13,
 56         OP_LOCKU = 14,
 57         OP_LOOKUP = 15,
 58         OP_LOOKUPP = 16,
 59         OP_NVERIFY = 17,
 60         OP_OPEN = 18,
 61         OP_OPENATTR = 19,
 62         OP_OPEN_CONFIRM = 20,
 63         OP_OPEN_DOWNGRADE = 21,
 64         OP_PUTFH = 22,
 65         OP_PUTPUBFH = 23,
 66         OP_PUTROOTFH = 24,
 67         OP_READ = 25,
 68         OP_READDIR = 26,
 69         OP_READLINK = 27,
 70         OP_REMOVE = 28,
 71         OP_RENAME = 29,
 72         OP_RENEW = 30,
 73         OP_RESTOREFH = 31,
 74         OP_SAVEFH = 32,
 75         OP_SECINFO = 33,
 76         OP_SETATTR = 34,
 77         OP_SETCLIENTID = 35,
 78         OP_SETCLIENTID_CONFIRM = 36,
 79         OP_VERIFY = 37,
 80         OP_WRITE = 38,
 81         OP_RELEASE_LOCKOWNER = 39,
 82 
 83         /* nfs41 */
 84         OP_BACKCHANNEL_CTL = 40,
 85         OP_BIND_CONN_TO_SESSION = 41,
 86         OP_EXCHANGE_ID = 42,
 87         OP_CREATE_SESSION = 43,
 88         OP_DESTROY_SESSION = 44,
 89         OP_FREE_STATEID = 45,
 90         OP_GET_DIR_DELEGATION = 46,
 91         OP_GETDEVICEINFO = 47,
 92         OP_GETDEVICELIST = 48,
 93         OP_LAYOUTCOMMIT = 49,
 94         OP_LAYOUTGET = 50,
 95         OP_LAYOUTRETURN = 51,
 96         OP_SECINFO_NO_NAME = 52,
 97         OP_SEQUENCE = 53,
 98         OP_SET_SSV = 54,
 99         OP_TEST_STATEID = 55,
100         OP_WANT_DELEGATION = 56,
101         OP_DESTROY_CLIENTID = 57,
102         OP_RECLAIM_COMPLETE = 58,
103 
104         OP_ILLEGAL = 10044,
105 };
106 
107 /*Defining first and last NFS4 operations implemented.
108 Needs to be updated if more operations are defined in future.*/
109 
110 #define FIRST_NFS4_OP   OP_ACCESS
111 #define LAST_NFS4_OP    OP_RECLAIM_COMPLETE
112 
113 enum nfsstat4 {
114         NFS4_OK = 0,
115         NFS4ERR_PERM = 1,
116         NFS4ERR_NOENT = 2,
117         NFS4ERR_IO = 5,
118         NFS4ERR_NXIO = 6,
119         NFS4ERR_ACCESS = 13,
120         NFS4ERR_EXIST = 17,
121         NFS4ERR_XDEV = 18,
122         /* Unused/reserved 19 */
123         NFS4ERR_NOTDIR = 20,
124         NFS4ERR_ISDIR = 21,
125         NFS4ERR_INVAL = 22,
126         NFS4ERR_FBIG = 27,
127         NFS4ERR_NOSPC = 28,
128         NFS4ERR_ROFS = 30,
129         NFS4ERR_MLINK = 31,
130         NFS4ERR_NAMETOOLONG = 63,
131         NFS4ERR_NOTEMPTY = 66,
132         NFS4ERR_DQUOT = 69,
133         NFS4ERR_STALE = 70,
134         NFS4ERR_BADHANDLE = 10001,
135         NFS4ERR_BAD_COOKIE = 10003,
136         NFS4ERR_NOTSUPP = 10004,
137         NFS4ERR_TOOSMALL = 10005,
138         NFS4ERR_SERVERFAULT = 10006,
139         NFS4ERR_BADTYPE = 10007,
140         NFS4ERR_DELAY = 10008,
141         NFS4ERR_SAME = 10009,
142         NFS4ERR_DENIED = 10010,
143         NFS4ERR_EXPIRED = 10011,
144         NFS4ERR_LOCKED = 10012,
145         NFS4ERR_GRACE = 10013,
146         NFS4ERR_FHEXPIRED = 10014,
147         NFS4ERR_SHARE_DENIED = 10015,
148         NFS4ERR_WRONGSEC = 10016,
149         NFS4ERR_CLID_INUSE = 10017,
150         NFS4ERR_RESOURCE = 10018,
151         NFS4ERR_MOVED = 10019,
152         NFS4ERR_NOFILEHANDLE = 10020,
153         NFS4ERR_MINOR_VERS_MISMATCH = 10021,
154         NFS4ERR_STALE_CLIENTID = 10022,
155         NFS4ERR_STALE_STATEID = 10023,
156         NFS4ERR_OLD_STATEID = 10024,
157         NFS4ERR_BAD_STATEID = 10025,
158         NFS4ERR_BAD_SEQID = 10026,
159         NFS4ERR_NOT_SAME = 10027,
160         NFS4ERR_LOCK_RANGE = 10028,
161         NFS4ERR_SYMLINK = 10029,
162         NFS4ERR_RESTOREFH = 10030,
163         NFS4ERR_LEASE_MOVED = 10031,
164         NFS4ERR_ATTRNOTSUPP = 10032,
165         NFS4ERR_NO_GRACE = 10033,
166         NFS4ERR_RECLAIM_BAD = 10034,
167         NFS4ERR_RECLAIM_CONFLICT = 10035,
168         NFS4ERR_BADXDR = 10036,
169         NFS4ERR_LOCKS_HELD = 10037,
170         NFS4ERR_OPENMODE = 10038,
171         NFS4ERR_BADOWNER = 10039,
172         NFS4ERR_BADCHAR = 10040,
173         NFS4ERR_BADNAME = 10041,
174         NFS4ERR_BAD_RANGE = 10042,
175         NFS4ERR_LOCK_NOTSUPP = 10043,
176         NFS4ERR_OP_ILLEGAL = 10044,
177         NFS4ERR_DEADLOCK = 10045,
178         NFS4ERR_FILE_OPEN = 10046,
179         NFS4ERR_ADMIN_REVOKED = 10047,
180         NFS4ERR_CB_PATH_DOWN = 10048,
181 
182         /* nfs41 */
183         NFS4ERR_BADIOMODE       = 10049,
184         NFS4ERR_BADLAYOUT       = 10050,
185         NFS4ERR_BAD_SESSION_DIGEST = 10051,
186         NFS4ERR_BADSESSION      = 10052,
187         NFS4ERR_BADSLOT         = 10053,
188         NFS4ERR_COMPLETE_ALREADY = 10054,
189         NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
190         NFS4ERR_DELEG_ALREADY_WANTED = 10056,
191         NFS4ERR_BACK_CHAN_BUSY  = 10057,        /* backchan reqs outstanding */
192         NFS4ERR_LAYOUTTRYLATER  = 10058,
193         NFS4ERR_LAYOUTUNAVAILABLE = 10059,
194         NFS4ERR_NOMATCHING_LAYOUT = 10060,
195         NFS4ERR_RECALLCONFLICT  = 10061,
196         NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
197         NFS4ERR_SEQ_MISORDERED = 10063,         /* unexpected seq.id in req */
198         NFS4ERR_SEQUENCE_POS    = 10064,        /* [CB_]SEQ. op not 1st op */
199         NFS4ERR_REQ_TOO_BIG     = 10065,        /* request too big */
200         NFS4ERR_REP_TOO_BIG     = 10066,        /* reply too big */
201         NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067,   /* rep. not all cached */
202         NFS4ERR_RETRY_UNCACHED_REP = 10068,     /* retry & rep. uncached */
203         NFS4ERR_UNSAFE_COMPOUND = 10069,        /* retry/recovery too hard */
204         NFS4ERR_TOO_MANY_OPS    = 10070,        /* too many ops in [CB_]COMP */
205         NFS4ERR_OP_NOT_IN_SESSION = 10071,      /* op needs [CB_]SEQ. op */
206         NFS4ERR_HASH_ALG_UNSUPP = 10072,        /* hash alg. not supp. */
207                                                 /* Error 10073 is unused. */
208         NFS4ERR_CLIENTID_BUSY   = 10074,        /* clientid has state */
209         NFS4ERR_PNFS_IO_HOLE    = 10075,        /* IO to _SPARSE file hole */
210         NFS4ERR_SEQ_FALSE_RETRY = 10076,        /* retry not original */
211         NFS4ERR_BAD_HIGH_SLOT   = 10077,        /* sequence arg bad */
212         NFS4ERR_DEADSESSION     = 10078,        /* persistent session dead */
213         NFS4ERR_ENCR_ALG_UNSUPP = 10079,        /* SSV alg mismatch */
214         NFS4ERR_PNFS_NO_LAYOUT  = 10080,        /* direct I/O with no layout */
215         NFS4ERR_NOT_ONLY_OP     = 10081,        /* bad compound */
216         NFS4ERR_WRONG_CRED      = 10082,        /* permissions:state change */
217         NFS4ERR_WRONG_TYPE      = 10083,        /* current operation mismatch */
218         NFS4ERR_DIRDELEG_UNAVAIL = 10084,       /* no directory delegation */
219         NFS4ERR_REJECT_DELEG    = 10085,        /* on callback */
220         NFS4ERR_RETURNCONFLICT  = 10086,        /* outstanding layoutreturn */
221         NFS4ERR_DELEG_REVOKED   = 10087,        /* deleg./layout revoked */
222 };
223 
224 static inline bool seqid_mutating_err(u32 err)
225 {
226         /* rfc 3530 section 8.1.5: */
227         switch (err) {
228         case NFS4ERR_STALE_CLIENTID:
229         case NFS4ERR_STALE_STATEID:
230         case NFS4ERR_BAD_STATEID:
231         case NFS4ERR_BAD_SEQID:
232         case NFS4ERR_BADXDR:
233         case NFS4ERR_RESOURCE:
234         case NFS4ERR_NOFILEHANDLE:
235                 return false;
236         };
237         return true;
238 }
239 
240 /*
241  * Note: NF4BAD is not actually part of the protocol; it is just used
242  * internally by nfsd.
243  */
244 enum nfs_ftype4 {
245         NF4BAD          = 0,
246         NF4REG          = 1,    /* Regular File */
247         NF4DIR          = 2,    /* Directory */
248         NF4BLK          = 3,    /* Special File - block device */
249         NF4CHR          = 4,    /* Special File - character device */
250         NF4LNK          = 5,    /* Symbolic Link */
251         NF4SOCK         = 6,    /* Special File - socket */
252         NF4FIFO         = 7,    /* Special File - fifo */
253         NF4ATTRDIR      = 8,    /* Attribute Directory */
254         NF4NAMEDATTR    = 9     /* Named Attribute */
255 };
256 
257 enum open_claim_type4 {
258         NFS4_OPEN_CLAIM_NULL = 0,
259         NFS4_OPEN_CLAIM_PREVIOUS = 1,
260         NFS4_OPEN_CLAIM_DELEGATE_CUR = 2,
261         NFS4_OPEN_CLAIM_DELEGATE_PREV = 3,
262         NFS4_OPEN_CLAIM_FH = 4, /* 4.1 */
263         NFS4_OPEN_CLAIM_DELEG_CUR_FH = 5, /* 4.1 */
264         NFS4_OPEN_CLAIM_DELEG_PREV_FH = 6, /* 4.1 */
265 };
266 
267 enum opentype4 {
268         NFS4_OPEN_NOCREATE = 0,
269         NFS4_OPEN_CREATE = 1
270 };
271 
272 enum createmode4 {
273         NFS4_CREATE_UNCHECKED = 0,
274         NFS4_CREATE_GUARDED = 1,
275         NFS4_CREATE_EXCLUSIVE = 2,
276         /*
277          * New to NFSv4.1. If session is persistent,
278          * GUARDED4 MUST be used. Otherwise, use
279          * EXCLUSIVE4_1 instead of EXCLUSIVE4.
280          */
281         NFS4_CREATE_EXCLUSIVE4_1 = 3
282 };
283 
284 enum limit_by4 {
285         NFS4_LIMIT_SIZE = 1,
286         NFS4_LIMIT_BLOCKS = 2
287 };
288 
289 enum open_delegation_type4 {
290         NFS4_OPEN_DELEGATE_NONE = 0,
291         NFS4_OPEN_DELEGATE_READ = 1,
292         NFS4_OPEN_DELEGATE_WRITE = 2,
293         NFS4_OPEN_DELEGATE_NONE_EXT = 3, /* 4.1 */
294 };
295 
296 enum why_no_delegation4 { /* new to v4.1 */
297         WND4_NOT_WANTED = 0,
298         WND4_CONTENTION = 1,
299         WND4_RESOURCE = 2,
300         WND4_NOT_SUPP_FTYPE = 3,
301         WND4_WRITE_DELEG_NOT_SUPP_FTYPE = 4,
302         WND4_NOT_SUPP_UPGRADE = 5,
303         WND4_NOT_SUPP_DOWNGRADE = 6,
304         WND4_CANCELLED = 7,
305         WND4_IS_DIR = 8,
306 };
307 
308 enum lock_type4 {
309         NFS4_UNLOCK_LT = 0,
310         NFS4_READ_LT = 1,
311         NFS4_WRITE_LT = 2,
312         NFS4_READW_LT = 3,
313         NFS4_WRITEW_LT = 4
314 };
315 
316 
317 /* Mandatory Attributes */
318 #define FATTR4_WORD0_SUPPORTED_ATTRS    (1UL << 0)
319 #define FATTR4_WORD0_TYPE               (1UL << 1)
320 #define FATTR4_WORD0_FH_EXPIRE_TYPE     (1UL << 2)
321 #define FATTR4_WORD0_CHANGE             (1UL << 3)
322 #define FATTR4_WORD0_SIZE               (1UL << 4)
323 #define FATTR4_WORD0_LINK_SUPPORT       (1UL << 5)
324 #define FATTR4_WORD0_SYMLINK_SUPPORT    (1UL << 6)
325 #define FATTR4_WORD0_NAMED_ATTR         (1UL << 7)
326 #define FATTR4_WORD0_FSID               (1UL << 8)
327 #define FATTR4_WORD0_UNIQUE_HANDLES     (1UL << 9)
328 #define FATTR4_WORD0_LEASE_TIME         (1UL << 10)
329 #define FATTR4_WORD0_RDATTR_ERROR       (1UL << 11)
330 /* Mandatory in NFSv4.1 */
331 #define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
332 
333 /* Recommended Attributes */
334 #define FATTR4_WORD0_ACL                (1UL << 12)
335 #define FATTR4_WORD0_ACLSUPPORT         (1UL << 13)
336 #define FATTR4_WORD0_ARCHIVE            (1UL << 14)
337 #define FATTR4_WORD0_CANSETTIME         (1UL << 15)
338 #define FATTR4_WORD0_CASE_INSENSITIVE   (1UL << 16)
339 #define FATTR4_WORD0_CASE_PRESERVING    (1UL << 17)
340 #define FATTR4_WORD0_CHOWN_RESTRICTED   (1UL << 18)
341 #define FATTR4_WORD0_FILEHANDLE         (1UL << 19)
342 #define FATTR4_WORD0_FILEID             (1UL << 20)
343 #define FATTR4_WORD0_FILES_AVAIL        (1UL << 21)
344 #define FATTR4_WORD0_FILES_FREE         (1UL << 22)
345 #define FATTR4_WORD0_FILES_TOTAL        (1UL << 23)
346 #define FATTR4_WORD0_FS_LOCATIONS       (1UL << 24)
347 #define FATTR4_WORD0_HIDDEN             (1UL << 25)
348 #define FATTR4_WORD0_HOMOGENEOUS        (1UL << 26)
349 #define FATTR4_WORD0_MAXFILESIZE        (1UL << 27)
350 #define FATTR4_WORD0_MAXLINK            (1UL << 28)
351 #define FATTR4_WORD0_MAXNAME            (1UL << 29)
352 #define FATTR4_WORD0_MAXREAD            (1UL << 30)
353 #define FATTR4_WORD0_MAXWRITE           (1UL << 31)
354 #define FATTR4_WORD1_MIMETYPE           (1UL << 0)
355 #define FATTR4_WORD1_MODE               (1UL << 1)
356 #define FATTR4_WORD1_NO_TRUNC           (1UL << 2)
357 #define FATTR4_WORD1_NUMLINKS           (1UL << 3)
358 #define FATTR4_WORD1_OWNER              (1UL << 4)
359 #define FATTR4_WORD1_OWNER_GROUP        (1UL << 5)
360 #define FATTR4_WORD1_QUOTA_HARD         (1UL << 6)
361 #define FATTR4_WORD1_QUOTA_SOFT         (1UL << 7)
362 #define FATTR4_WORD1_QUOTA_USED         (1UL << 8)
363 #define FATTR4_WORD1_RAWDEV             (1UL << 9)
364 #define FATTR4_WORD1_SPACE_AVAIL        (1UL << 10)
365 #define FATTR4_WORD1_SPACE_FREE         (1UL << 11)
366 #define FATTR4_WORD1_SPACE_TOTAL        (1UL << 12)
367 #define FATTR4_WORD1_SPACE_USED         (1UL << 13)
368 #define FATTR4_WORD1_SYSTEM             (1UL << 14)
369 #define FATTR4_WORD1_TIME_ACCESS        (1UL << 15)
370 #define FATTR4_WORD1_TIME_ACCESS_SET    (1UL << 16)
371 #define FATTR4_WORD1_TIME_BACKUP        (1UL << 17)
372 #define FATTR4_WORD1_TIME_CREATE        (1UL << 18)
373 #define FATTR4_WORD1_TIME_DELTA         (1UL << 19)
374 #define FATTR4_WORD1_TIME_METADATA      (1UL << 20)
375 #define FATTR4_WORD1_TIME_MODIFY        (1UL << 21)
376 #define FATTR4_WORD1_TIME_MODIFY_SET    (1UL << 22)
377 #define FATTR4_WORD1_MOUNTED_ON_FILEID  (1UL << 23)
378 #define FATTR4_WORD1_FS_LAYOUT_TYPES    (1UL << 30)
379 #define FATTR4_WORD2_LAYOUT_BLKSIZE     (1UL << 1)
380 #define FATTR4_WORD2_MDSTHRESHOLD       (1UL << 4)
381 
382 /* MDS threshold bitmap bits */
383 #define THRESHOLD_RD                    (1UL << 0)
384 #define THRESHOLD_WR                    (1UL << 1)
385 #define THRESHOLD_RD_IO                 (1UL << 2)
386 #define THRESHOLD_WR_IO                 (1UL << 3)
387 
388 #define NFSPROC4_NULL 0
389 #define NFSPROC4_COMPOUND 1
390 #define NFS4_VERSION 4
391 #define NFS4_MINOR_VERSION 0
392 
393 #if defined(CONFIG_NFS_V4_1)
394 #define NFS4_MAX_MINOR_VERSION 1
395 #else
396 #define NFS4_MAX_MINOR_VERSION 0
397 #endif /* CONFIG_NFS_V4_1 */
398 
399 #define NFS4_DEBUG 1
400 
401 /* Index of predefined Linux client operations */
402 
403 enum {
404         NFSPROC4_CLNT_NULL = 0,         /* Unused */
405         NFSPROC4_CLNT_READ,
406         NFSPROC4_CLNT_WRITE,
407         NFSPROC4_CLNT_COMMIT,
408         NFSPROC4_CLNT_OPEN,
409         NFSPROC4_CLNT_OPEN_CONFIRM,
410         NFSPROC4_CLNT_OPEN_NOATTR,
411         NFSPROC4_CLNT_OPEN_DOWNGRADE,
412         NFSPROC4_CLNT_CLOSE,
413         NFSPROC4_CLNT_SETATTR,
414         NFSPROC4_CLNT_FSINFO,
415         NFSPROC4_CLNT_RENEW,
416         NFSPROC4_CLNT_SETCLIENTID,
417         NFSPROC4_CLNT_SETCLIENTID_CONFIRM,
418         NFSPROC4_CLNT_LOCK,
419         NFSPROC4_CLNT_LOCKT,
420         NFSPROC4_CLNT_LOCKU,
421         NFSPROC4_CLNT_ACCESS,
422         NFSPROC4_CLNT_GETATTR,
423         NFSPROC4_CLNT_LOOKUP,
424         NFSPROC4_CLNT_LOOKUP_ROOT,
425         NFSPROC4_CLNT_REMOVE,
426         NFSPROC4_CLNT_RENAME,
427         NFSPROC4_CLNT_LINK,
428         NFSPROC4_CLNT_SYMLINK,
429         NFSPROC4_CLNT_CREATE,
430         NFSPROC4_CLNT_PATHCONF,
431         NFSPROC4_CLNT_STATFS,
432         NFSPROC4_CLNT_READLINK,
433         NFSPROC4_CLNT_READDIR,
434         NFSPROC4_CLNT_SERVER_CAPS,
435         NFSPROC4_CLNT_DELEGRETURN,
436         NFSPROC4_CLNT_GETACL,
437         NFSPROC4_CLNT_SETACL,
438         NFSPROC4_CLNT_FS_LOCATIONS,
439         NFSPROC4_CLNT_RELEASE_LOCKOWNER,
440         NFSPROC4_CLNT_SECINFO,
441 
442         /* nfs41 */
443         NFSPROC4_CLNT_EXCHANGE_ID,
444         NFSPROC4_CLNT_CREATE_SESSION,
445         NFSPROC4_CLNT_DESTROY_SESSION,
446         NFSPROC4_CLNT_SEQUENCE,
447         NFSPROC4_CLNT_GET_LEASE_TIME,
448         NFSPROC4_CLNT_RECLAIM_COMPLETE,
449         NFSPROC4_CLNT_LAYOUTGET,
450         NFSPROC4_CLNT_GETDEVICEINFO,
451         NFSPROC4_CLNT_LAYOUTCOMMIT,
452         NFSPROC4_CLNT_LAYOUTRETURN,
453         NFSPROC4_CLNT_SECINFO_NO_NAME,
454         NFSPROC4_CLNT_TEST_STATEID,
455         NFSPROC4_CLNT_FREE_STATEID,
456         NFSPROC4_CLNT_GETDEVICELIST,
457         NFSPROC4_CLNT_BIND_CONN_TO_SESSION,
458         NFSPROC4_CLNT_DESTROY_CLIENTID,
459 };
460 
461 /* nfs41 types */
462 struct nfs4_sessionid {
463         unsigned char data[NFS4_MAX_SESSIONID_LEN];
464 };
465 
466 /* Create Session Flags */
467 #define SESSION4_PERSIST        0x001
468 #define SESSION4_BACK_CHAN      0x002
469 #define SESSION4_RDMA           0x004
470 
471 #define SESSION4_FLAG_MASK_A    0x007
472 
473 enum state_protect_how4 {
474         SP4_NONE        = 0,
475         SP4_MACH_CRED   = 1,
476         SP4_SSV         = 2
477 };
478 
479 enum pnfs_layouttype {
480         LAYOUT_NFSV4_1_FILES  = 1,
481         LAYOUT_OSD2_OBJECTS = 2,
482         LAYOUT_BLOCK_VOLUME = 3,
483 };
484 
485 /* used for both layout return and recall */
486 enum pnfs_layoutreturn_type {
487         RETURN_FILE = 1,
488         RETURN_FSID = 2,
489         RETURN_ALL  = 3
490 };
491 
492 enum pnfs_iomode {
493         IOMODE_READ = 1,
494         IOMODE_RW = 2,
495         IOMODE_ANY = 3,
496 };
497 
498 enum pnfs_notify_deviceid_type4 {
499         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
500         NOTIFY_DEVICEID4_DELETE = 1 << 2,
501 };
502 
503 #define NFL4_UFLG_MASK                  0x0000003F
504 #define NFL4_UFLG_DENSE                 0x00000001
505 #define NFL4_UFLG_COMMIT_THRU_MDS       0x00000002
506 #define NFL4_UFLG_STRIPE_UNIT_SIZE_MASK 0xFFFFFFC0
507 
508 /* Encoded in the loh_body field of type layouthint4 */
509 enum filelayout_hint_care4 {
510         NFLH4_CARE_DENSE                = NFL4_UFLG_DENSE,
511         NFLH4_CARE_COMMIT_THRU_MDS      = NFL4_UFLG_COMMIT_THRU_MDS,
512         NFLH4_CARE_STRIPE_UNIT_SIZE     = 0x00000040,
513         NFLH4_CARE_STRIPE_COUNT         = 0x00000080
514 };
515 
516 #define NFS4_DEVICEID4_SIZE 16
517 
518 struct nfs4_deviceid {
519         char data[NFS4_DEVICEID4_SIZE];
520 };
521 
522 #endif
523 

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