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 
13 #ifndef _LINUX_NFS4_H
14 #define _LINUX_NFS4_H
15 
16 #include <linux/types.h>
17 
18 #define NFS4_BITMAP_SIZE	2
19 #define NFS4_VERIFIER_SIZE	8
20 #define NFS4_STATEID_SEQID_SIZE 4
21 #define NFS4_STATEID_OTHER_SIZE 12
22 #define NFS4_STATEID_SIZE	(NFS4_STATEID_SEQID_SIZE + NFS4_STATEID_OTHER_SIZE)
23 #define NFS4_FHSIZE		128
24 #define NFS4_MAXPATHLEN		PATH_MAX
25 #define NFS4_MAXNAMLEN		NAME_MAX
26 #define NFS4_OPAQUE_LIMIT	1024
27 #define NFS4_MAX_SESSIONID_LEN	16
28 
29 #define NFS4_ACCESS_READ        0x0001
30 #define NFS4_ACCESS_LOOKUP      0x0002
31 #define NFS4_ACCESS_MODIFY      0x0004
32 #define NFS4_ACCESS_EXTEND      0x0008
33 #define NFS4_ACCESS_DELETE      0x0010
34 #define NFS4_ACCESS_EXECUTE     0x0020
35 
36 #define NFS4_FH_PERSISTENT		0x0000
37 #define NFS4_FH_NOEXPIRE_WITH_OPEN	0x0001
38 #define NFS4_FH_VOLATILE_ANY		0x0002
39 #define NFS4_FH_VOL_MIGRATION		0x0004
40 #define NFS4_FH_VOL_RENAME		0x0008
41 
42 #define NFS4_OPEN_RESULT_CONFIRM 0x0002
43 #define NFS4_OPEN_RESULT_LOCKTYPE_POSIX 0x0004
44 
45 #define NFS4_SHARE_ACCESS_MASK	0x000F
46 #define NFS4_SHARE_ACCESS_READ	0x0001
47 #define NFS4_SHARE_ACCESS_WRITE	0x0002
48 #define NFS4_SHARE_ACCESS_BOTH	0x0003
49 #define NFS4_SHARE_DENY_READ	0x0001
50 #define NFS4_SHARE_DENY_WRITE	0x0002
51 #define NFS4_SHARE_DENY_BOTH	0x0003
52 
53 /* nfs41 */
54 #define NFS4_SHARE_WANT_MASK		0xFF00
55 #define NFS4_SHARE_WANT_NO_PREFERENCE	0x0000
56 #define NFS4_SHARE_WANT_READ_DELEG	0x0100
57 #define NFS4_SHARE_WANT_WRITE_DELEG	0x0200
58 #define NFS4_SHARE_WANT_ANY_DELEG	0x0300
59 #define NFS4_SHARE_WANT_NO_DELEG	0x0400
60 #define NFS4_SHARE_WANT_CANCEL		0x0500
61 
62 #define NFS4_SHARE_WHEN_MASK		0xF0000
63 #define NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL	0x10000
64 #define NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED		0x20000
65 
66 #define NFS4_CDFC4_FORE	0x1
67 #define NFS4_CDFC4_BACK 0x2
68 #define NFS4_CDFC4_BOTH 0x3
69 #define NFS4_CDFC4_FORE_OR_BOTH 0x3
70 #define NFS4_CDFC4_BACK_OR_BOTH 0x7
71 
72 #define NFS4_SET_TO_SERVER_TIME	0
73 #define NFS4_SET_TO_CLIENT_TIME	1
74 
75 #define NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE 0
76 #define NFS4_ACE_ACCESS_DENIED_ACE_TYPE  1
77 #define NFS4_ACE_SYSTEM_AUDIT_ACE_TYPE   2
78 #define NFS4_ACE_SYSTEM_ALARM_ACE_TYPE   3
79 
80 #define ACL4_SUPPORT_ALLOW_ACL 0x01
81 #define ACL4_SUPPORT_DENY_ACL  0x02
82 #define ACL4_SUPPORT_AUDIT_ACL 0x04
83 #define ACL4_SUPPORT_ALARM_ACL 0x08
84 
85 #define NFS4_ACE_FILE_INHERIT_ACE             0x00000001
86 #define NFS4_ACE_DIRECTORY_INHERIT_ACE        0x00000002
87 #define NFS4_ACE_NO_PROPAGATE_INHERIT_ACE     0x00000004
88 #define NFS4_ACE_INHERIT_ONLY_ACE             0x00000008
89 #define NFS4_ACE_SUCCESSFUL_ACCESS_ACE_FLAG   0x00000010
90 #define NFS4_ACE_FAILED_ACCESS_ACE_FLAG       0x00000020
91 #define NFS4_ACE_IDENTIFIER_GROUP             0x00000040
92 
93 #define NFS4_ACE_READ_DATA                    0x00000001
94 #define NFS4_ACE_LIST_DIRECTORY               0x00000001
95 #define NFS4_ACE_WRITE_DATA                   0x00000002
96 #define NFS4_ACE_ADD_FILE                     0x00000002
97 #define NFS4_ACE_APPEND_DATA                  0x00000004
98 #define NFS4_ACE_ADD_SUBDIRECTORY             0x00000004
99 #define NFS4_ACE_READ_NAMED_ATTRS             0x00000008
100 #define NFS4_ACE_WRITE_NAMED_ATTRS            0x00000010
101 #define NFS4_ACE_EXECUTE                      0x00000020
102 #define NFS4_ACE_DELETE_CHILD                 0x00000040
103 #define NFS4_ACE_READ_ATTRIBUTES              0x00000080
104 #define NFS4_ACE_WRITE_ATTRIBUTES             0x00000100
105 #define NFS4_ACE_DELETE                       0x00010000
106 #define NFS4_ACE_READ_ACL                     0x00020000
107 #define NFS4_ACE_WRITE_ACL                    0x00040000
108 #define NFS4_ACE_WRITE_OWNER                  0x00080000
109 #define NFS4_ACE_SYNCHRONIZE                  0x00100000
110 #define NFS4_ACE_GENERIC_READ                 0x00120081
111 #define NFS4_ACE_GENERIC_WRITE                0x00160106
112 #define NFS4_ACE_GENERIC_EXECUTE              0x001200A0
113 #define NFS4_ACE_MASK_ALL                     0x001F01FF
114 
115 #define EXCHGID4_FLAG_SUPP_MOVED_REFER		0x00000001
116 #define EXCHGID4_FLAG_SUPP_MOVED_MIGR		0x00000002
117 #define EXCHGID4_FLAG_BIND_PRINC_STATEID	0x00000100
118 
119 #define EXCHGID4_FLAG_USE_NON_PNFS		0x00010000
120 #define EXCHGID4_FLAG_USE_PNFS_MDS		0x00020000
121 #define EXCHGID4_FLAG_USE_PNFS_DS		0x00040000
122 #define EXCHGID4_FLAG_MASK_PNFS			0x00070000
123 
124 #define EXCHGID4_FLAG_UPD_CONFIRMED_REC_A	0x40000000
125 #define EXCHGID4_FLAG_CONFIRMED_R		0x80000000
126 /*
127  * Since the validity of these bits depends on whether
128  * they're set in the argument or response, have separate
129  * invalid flag masks for arg (_A) and resp (_R).
130  */
131 #define EXCHGID4_FLAG_MASK_A			0x40070103
132 #define EXCHGID4_FLAG_MASK_R			0x80070103
133 
134 #define SEQ4_STATUS_CB_PATH_DOWN		0x00000001
135 #define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING	0x00000002
136 #define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRED	0x00000004
137 #define SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED	0x00000008
138 #define SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED	0x00000010
139 #define SEQ4_STATUS_ADMIN_STATE_REVOKED		0x00000020
140 #define SEQ4_STATUS_RECALLABLE_STATE_REVOKED	0x00000040
141 #define SEQ4_STATUS_LEASE_MOVED			0x00000080
142 #define SEQ4_STATUS_RESTART_RECLAIM_NEEDED	0x00000100
143 #define SEQ4_STATUS_CB_PATH_DOWN_SESSION	0x00000200
144 #define SEQ4_STATUS_BACKCHANNEL_FAULT		0x00000400
145 
146 #define NFS4_SECINFO_STYLE4_CURRENT_FH	0
147 #define NFS4_SECINFO_STYLE4_PARENT	1
148 
149 #define NFS4_MAX_UINT64	(~(u64)0)
150 
151 /* An NFS4 sessions server must support at least NFS4_MAX_OPS operations.
152  * If a compound requires more operations, adjust NFS4_MAX_OPS accordingly.
153  */
154 #define NFS4_MAX_OPS   8
155 
156 /* Our NFS4 client back channel server only wants the cb_sequene and the
157  * actual operation per compound
158  */
159 #define NFS4_MAX_BACK_CHANNEL_OPS 2
160 
161 enum nfs4_acl_whotype {
162 	NFS4_ACL_WHO_NAMED = 0,
163 	NFS4_ACL_WHO_OWNER,
164 	NFS4_ACL_WHO_GROUP,
165 	NFS4_ACL_WHO_EVERYONE,
166 };
167 
168 #ifdef __KERNEL__
169 #include <linux/list.h>
170 
171 struct nfs4_ace {
172 	uint32_t	type;
173 	uint32_t	flag;
174 	uint32_t	access_mask;
175 	int		whotype;
176 	uid_t		who;
177 };
178 
179 struct nfs4_acl {
180 	uint32_t	naces;
181 	struct nfs4_ace	aces[0];
182 };
183 
184 typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier;
185 
186 struct nfs_stateid4 {
187 	__be32 seqid;
188 	char other[NFS4_STATEID_OTHER_SIZE];
189 } __attribute__ ((packed));
190 
191 typedef struct nfs_stateid4 nfs4_stateid;
192 
193 enum nfs_opnum4 {
194 	OP_ACCESS = 3,
195 	OP_CLOSE = 4,
196 	OP_COMMIT = 5,
197 	OP_CREATE = 6,
198 	OP_DELEGPURGE = 7,
199 	OP_DELEGRETURN = 8,
200 	OP_GETATTR = 9,
201 	OP_GETFH = 10,
202 	OP_LINK = 11,
203 	OP_LOCK = 12,
204 	OP_LOCKT = 13,
205 	OP_LOCKU = 14,
206 	OP_LOOKUP = 15,
207 	OP_LOOKUPP = 16,
208 	OP_NVERIFY = 17,
209 	OP_OPEN = 18,
210 	OP_OPENATTR = 19,
211 	OP_OPEN_CONFIRM = 20,
212 	OP_OPEN_DOWNGRADE = 21,
213 	OP_PUTFH = 22,
214 	OP_PUTPUBFH = 23,
215 	OP_PUTROOTFH = 24,
216 	OP_READ = 25,
217 	OP_READDIR = 26,
218 	OP_READLINK = 27,
219 	OP_REMOVE = 28,
220 	OP_RENAME = 29,
221 	OP_RENEW = 30,
222 	OP_RESTOREFH = 31,
223 	OP_SAVEFH = 32,
224 	OP_SECINFO = 33,
225 	OP_SETATTR = 34,
226 	OP_SETCLIENTID = 35,
227 	OP_SETCLIENTID_CONFIRM = 36,
228 	OP_VERIFY = 37,
229 	OP_WRITE = 38,
230 	OP_RELEASE_LOCKOWNER = 39,
231 
232 	/* nfs41 */
233 	OP_BACKCHANNEL_CTL = 40,
234 	OP_BIND_CONN_TO_SESSION = 41,
235 	OP_EXCHANGE_ID = 42,
236 	OP_CREATE_SESSION = 43,
237 	OP_DESTROY_SESSION = 44,
238 	OP_FREE_STATEID = 45,
239 	OP_GET_DIR_DELEGATION = 46,
240 	OP_GETDEVICEINFO = 47,
241 	OP_GETDEVICELIST = 48,
242 	OP_LAYOUTCOMMIT = 49,
243 	OP_LAYOUTGET = 50,
244 	OP_LAYOUTRETURN = 51,
245 	OP_SECINFO_NO_NAME = 52,
246 	OP_SEQUENCE = 53,
247 	OP_SET_SSV = 54,
248 	OP_TEST_STATEID = 55,
249 	OP_WANT_DELEGATION = 56,
250 	OP_DESTROY_CLIENTID = 57,
251 	OP_RECLAIM_COMPLETE = 58,
252 
253 	OP_ILLEGAL = 10044,
254 };
255 
256 /*Defining first and last NFS4 operations implemented.
257 Needs to be updated if more operations are defined in future.*/
258 
259 #define FIRST_NFS4_OP	OP_ACCESS
260 #define LAST_NFS4_OP 	OP_RECLAIM_COMPLETE
261 
262 enum nfsstat4 {
263 	NFS4_OK = 0,
264 	NFS4ERR_PERM = 1,
265 	NFS4ERR_NOENT = 2,
266 	NFS4ERR_IO = 5,
267 	NFS4ERR_NXIO = 6,
268 	NFS4ERR_ACCESS = 13,
269 	NFS4ERR_EXIST = 17,
270 	NFS4ERR_XDEV = 18,
271 	/* Unused/reserved 19 */
272 	NFS4ERR_NOTDIR = 20,
273 	NFS4ERR_ISDIR = 21,
274 	NFS4ERR_INVAL = 22,
275 	NFS4ERR_FBIG = 27,
276 	NFS4ERR_NOSPC = 28,
277 	NFS4ERR_ROFS = 30,
278 	NFS4ERR_MLINK = 31,
279 	NFS4ERR_NAMETOOLONG = 63,
280 	NFS4ERR_NOTEMPTY = 66,
281 	NFS4ERR_DQUOT = 69,
282 	NFS4ERR_STALE = 70,
283 	NFS4ERR_BADHANDLE = 10001,
284 	NFS4ERR_BAD_COOKIE = 10003,
285 	NFS4ERR_NOTSUPP = 10004,
286 	NFS4ERR_TOOSMALL = 10005,
287 	NFS4ERR_SERVERFAULT = 10006,
288 	NFS4ERR_BADTYPE = 10007,
289 	NFS4ERR_DELAY = 10008,
290 	NFS4ERR_SAME = 10009,
291 	NFS4ERR_DENIED = 10010,
292 	NFS4ERR_EXPIRED = 10011,
293 	NFS4ERR_LOCKED = 10012,
294 	NFS4ERR_GRACE = 10013,
295 	NFS4ERR_FHEXPIRED = 10014,
296 	NFS4ERR_SHARE_DENIED = 10015,
297 	NFS4ERR_WRONGSEC = 10016,
298 	NFS4ERR_CLID_INUSE = 10017,
299 	NFS4ERR_RESOURCE = 10018,
300 	NFS4ERR_MOVED = 10019,
301 	NFS4ERR_NOFILEHANDLE = 10020,
302 	NFS4ERR_MINOR_VERS_MISMATCH = 10021,
303 	NFS4ERR_STALE_CLIENTID = 10022,
304 	NFS4ERR_STALE_STATEID = 10023,
305 	NFS4ERR_OLD_STATEID = 10024,
306 	NFS4ERR_BAD_STATEID = 10025,
307 	NFS4ERR_BAD_SEQID = 10026,
308 	NFS4ERR_NOT_SAME = 10027,
309 	NFS4ERR_LOCK_RANGE = 10028,
310 	NFS4ERR_SYMLINK = 10029,
311 	NFS4ERR_RESTOREFH = 10030,
312 	NFS4ERR_LEASE_MOVED = 10031,
313 	NFS4ERR_ATTRNOTSUPP = 10032,
314 	NFS4ERR_NO_GRACE = 10033,
315 	NFS4ERR_RECLAIM_BAD = 10034,
316 	NFS4ERR_RECLAIM_CONFLICT = 10035,
317 	NFS4ERR_BADXDR = 10036,
318 	NFS4ERR_LOCKS_HELD = 10037,
319 	NFS4ERR_OPENMODE = 10038,
320 	NFS4ERR_BADOWNER = 10039,
321 	NFS4ERR_BADCHAR = 10040,
322 	NFS4ERR_BADNAME = 10041,
323 	NFS4ERR_BAD_RANGE = 10042,
324 	NFS4ERR_LOCK_NOTSUPP = 10043,
325 	NFS4ERR_OP_ILLEGAL = 10044,
326 	NFS4ERR_DEADLOCK = 10045,
327 	NFS4ERR_FILE_OPEN = 10046,
328 	NFS4ERR_ADMIN_REVOKED = 10047,
329 	NFS4ERR_CB_PATH_DOWN = 10048,
330 
331 	/* nfs41 */
332 	NFS4ERR_BADIOMODE	= 10049,
333 	NFS4ERR_BADLAYOUT	= 10050,
334 	NFS4ERR_BAD_SESSION_DIGEST = 10051,
335 	NFS4ERR_BADSESSION	= 10052,
336 	NFS4ERR_BADSLOT		= 10053,
337 	NFS4ERR_COMPLETE_ALREADY = 10054,
338 	NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
339 	NFS4ERR_DELEG_ALREADY_WANTED = 10056,
340 	NFS4ERR_BACK_CHAN_BUSY	= 10057,	/* backchan reqs outstanding */
341 	NFS4ERR_LAYOUTTRYLATER	= 10058,
342 	NFS4ERR_LAYOUTUNAVAILABLE = 10059,
343 	NFS4ERR_NOMATCHING_LAYOUT = 10060,
344 	NFS4ERR_RECALLCONFLICT	= 10061,
345 	NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
346 	NFS4ERR_SEQ_MISORDERED = 10063, 	/* unexpected seq.id in req */
347 	NFS4ERR_SEQUENCE_POS	= 10064,	/* [CB_]SEQ. op not 1st op */
348 	NFS4ERR_REQ_TOO_BIG	= 10065,	/* request too big */
349 	NFS4ERR_REP_TOO_BIG	= 10066,	/* reply too big */
350 	NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067,	/* rep. not all cached */
351 	NFS4ERR_RETRY_UNCACHED_REP = 10068,	/* retry & rep. uncached */
352 	NFS4ERR_UNSAFE_COMPOUND = 10069,	/* retry/recovery too hard */
353 	NFS4ERR_TOO_MANY_OPS	= 10070,	/* too many ops in [CB_]COMP */
354 	NFS4ERR_OP_NOT_IN_SESSION = 10071,	/* op needs [CB_]SEQ. op */
355 	NFS4ERR_HASH_ALG_UNSUPP = 10072,	/* hash alg. not supp. */
356 						/* Error 10073 is unused. */
357 	NFS4ERR_CLIENTID_BUSY	= 10074,	/* clientid has state */
358 	NFS4ERR_PNFS_IO_HOLE	= 10075,	/* IO to _SPARSE file hole */
359 	NFS4ERR_SEQ_FALSE_RETRY	= 10076,	/* retry not original */
360 	NFS4ERR_BAD_HIGH_SLOT	= 10077,	/* sequence arg bad */
361 	NFS4ERR_DEADSESSION	= 10078,	/* persistent session dead */
362 	NFS4ERR_ENCR_ALG_UNSUPP = 10079,	/* SSV alg mismatch */
363 	NFS4ERR_PNFS_NO_LAYOUT	= 10080,	/* direct I/O with no layout */
364 	NFS4ERR_NOT_ONLY_OP	= 10081,	/* bad compound */
365 	NFS4ERR_WRONG_CRED	= 10082,	/* permissions:state change */
366 	NFS4ERR_WRONG_TYPE	= 10083,	/* current operation mismatch */
367 	NFS4ERR_DIRDELEG_UNAVAIL = 10084,	/* no directory delegation */
368 	NFS4ERR_REJECT_DELEG	= 10085,	/* on callback */
369 	NFS4ERR_RETURNCONFLICT	= 10086,	/* outstanding layoutreturn */
370 	NFS4ERR_DELEG_REVOKED	= 10087,	/* deleg./layout revoked */
371 };
372 
seqid_mutating_err(u32 err)373 static inline bool seqid_mutating_err(u32 err)
374 {
375 	/* rfc 3530 section 8.1.5: */
376 	switch (err) {
377 	case NFS4ERR_STALE_CLIENTID:
378 	case NFS4ERR_STALE_STATEID:
379 	case NFS4ERR_BAD_STATEID:
380 	case NFS4ERR_BAD_SEQID:
381 	case NFS4ERR_BADXDR:
382 	case NFS4ERR_RESOURCE:
383 	case NFS4ERR_NOFILEHANDLE:
384 		return false;
385 	};
386 	return true;
387 }
388 
389 /*
390  * Note: NF4BAD is not actually part of the protocol; it is just used
391  * internally by nfsd.
392  */
393 enum nfs_ftype4 {
394 	NF4BAD		= 0,
395         NF4REG          = 1,    /* Regular File */
396         NF4DIR          = 2,    /* Directory */
397         NF4BLK          = 3,    /* Special File - block device */
398         NF4CHR          = 4,    /* Special File - character device */
399         NF4LNK          = 5,    /* Symbolic Link */
400         NF4SOCK         = 6,    /* Special File - socket */
401         NF4FIFO         = 7,    /* Special File - fifo */
402         NF4ATTRDIR      = 8,    /* Attribute Directory */
403         NF4NAMEDATTR    = 9     /* Named Attribute */
404 };
405 
406 enum open_claim_type4 {
407 	NFS4_OPEN_CLAIM_NULL = 0,
408 	NFS4_OPEN_CLAIM_PREVIOUS = 1,
409 	NFS4_OPEN_CLAIM_DELEGATE_CUR = 2,
410 	NFS4_OPEN_CLAIM_DELEGATE_PREV = 3,
411 	NFS4_OPEN_CLAIM_FH = 4, /* 4.1 */
412 	NFS4_OPEN_CLAIM_DELEG_CUR_FH = 5, /* 4.1 */
413 	NFS4_OPEN_CLAIM_DELEG_PREV_FH = 6, /* 4.1 */
414 };
415 
416 enum opentype4 {
417 	NFS4_OPEN_NOCREATE = 0,
418 	NFS4_OPEN_CREATE = 1
419 };
420 
421 enum createmode4 {
422 	NFS4_CREATE_UNCHECKED = 0,
423 	NFS4_CREATE_GUARDED = 1,
424 	NFS4_CREATE_EXCLUSIVE = 2,
425 	/*
426 	 * New to NFSv4.1. If session is persistent,
427 	 * GUARDED4 MUST be used. Otherwise, use
428 	 * EXCLUSIVE4_1 instead of EXCLUSIVE4.
429 	 */
430 	NFS4_CREATE_EXCLUSIVE4_1 = 3
431 };
432 
433 enum limit_by4 {
434 	NFS4_LIMIT_SIZE = 1,
435 	NFS4_LIMIT_BLOCKS = 2
436 };
437 
438 enum open_delegation_type4 {
439 	NFS4_OPEN_DELEGATE_NONE = 0,
440 	NFS4_OPEN_DELEGATE_READ = 1,
441 	NFS4_OPEN_DELEGATE_WRITE = 2,
442 	NFS4_OPEN_DELEGATE_NONE_EXT = 3, /* 4.1 */
443 };
444 
445 enum why_no_delegation4 { /* new to v4.1 */
446 	WND4_NOT_WANTED = 0,
447 	WND4_CONTENTION = 1,
448 	WND4_RESOURCE = 2,
449 	WND4_NOT_SUPP_FTYPE = 3,
450 	WND4_WRITE_DELEG_NOT_SUPP_FTYPE = 4,
451 	WND4_NOT_SUPP_UPGRADE = 5,
452 	WND4_NOT_SUPP_DOWNGRADE = 6,
453 	WND4_CANCELLED = 7,
454 	WND4_IS_DIR = 8,
455 };
456 
457 enum lock_type4 {
458 	NFS4_UNLOCK_LT = 0,
459 	NFS4_READ_LT = 1,
460 	NFS4_WRITE_LT = 2,
461 	NFS4_READW_LT = 3,
462 	NFS4_WRITEW_LT = 4
463 };
464 
465 
466 /* Mandatory Attributes */
467 #define FATTR4_WORD0_SUPPORTED_ATTRS    (1UL << 0)
468 #define FATTR4_WORD0_TYPE               (1UL << 1)
469 #define FATTR4_WORD0_FH_EXPIRE_TYPE     (1UL << 2)
470 #define FATTR4_WORD0_CHANGE             (1UL << 3)
471 #define FATTR4_WORD0_SIZE               (1UL << 4)
472 #define FATTR4_WORD0_LINK_SUPPORT       (1UL << 5)
473 #define FATTR4_WORD0_SYMLINK_SUPPORT    (1UL << 6)
474 #define FATTR4_WORD0_NAMED_ATTR         (1UL << 7)
475 #define FATTR4_WORD0_FSID               (1UL << 8)
476 #define FATTR4_WORD0_UNIQUE_HANDLES     (1UL << 9)
477 #define FATTR4_WORD0_LEASE_TIME         (1UL << 10)
478 #define FATTR4_WORD0_RDATTR_ERROR       (1UL << 11)
479 /* Mandatory in NFSv4.1 */
480 #define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
481 
482 /* Recommended Attributes */
483 #define FATTR4_WORD0_ACL                (1UL << 12)
484 #define FATTR4_WORD0_ACLSUPPORT         (1UL << 13)
485 #define FATTR4_WORD0_ARCHIVE            (1UL << 14)
486 #define FATTR4_WORD0_CANSETTIME         (1UL << 15)
487 #define FATTR4_WORD0_CASE_INSENSITIVE   (1UL << 16)
488 #define FATTR4_WORD0_CASE_PRESERVING    (1UL << 17)
489 #define FATTR4_WORD0_CHOWN_RESTRICTED   (1UL << 18)
490 #define FATTR4_WORD0_FILEHANDLE         (1UL << 19)
491 #define FATTR4_WORD0_FILEID             (1UL << 20)
492 #define FATTR4_WORD0_FILES_AVAIL        (1UL << 21)
493 #define FATTR4_WORD0_FILES_FREE         (1UL << 22)
494 #define FATTR4_WORD0_FILES_TOTAL        (1UL << 23)
495 #define FATTR4_WORD0_FS_LOCATIONS       (1UL << 24)
496 #define FATTR4_WORD0_HIDDEN             (1UL << 25)
497 #define FATTR4_WORD0_HOMOGENEOUS        (1UL << 26)
498 #define FATTR4_WORD0_MAXFILESIZE        (1UL << 27)
499 #define FATTR4_WORD0_MAXLINK            (1UL << 28)
500 #define FATTR4_WORD0_MAXNAME            (1UL << 29)
501 #define FATTR4_WORD0_MAXREAD            (1UL << 30)
502 #define FATTR4_WORD0_MAXWRITE           (1UL << 31)
503 #define FATTR4_WORD1_MIMETYPE           (1UL << 0)
504 #define FATTR4_WORD1_MODE               (1UL << 1)
505 #define FATTR4_WORD1_NO_TRUNC           (1UL << 2)
506 #define FATTR4_WORD1_NUMLINKS           (1UL << 3)
507 #define FATTR4_WORD1_OWNER              (1UL << 4)
508 #define FATTR4_WORD1_OWNER_GROUP        (1UL << 5)
509 #define FATTR4_WORD1_QUOTA_HARD         (1UL << 6)
510 #define FATTR4_WORD1_QUOTA_SOFT         (1UL << 7)
511 #define FATTR4_WORD1_QUOTA_USED         (1UL << 8)
512 #define FATTR4_WORD1_RAWDEV             (1UL << 9)
513 #define FATTR4_WORD1_SPACE_AVAIL        (1UL << 10)
514 #define FATTR4_WORD1_SPACE_FREE         (1UL << 11)
515 #define FATTR4_WORD1_SPACE_TOTAL        (1UL << 12)
516 #define FATTR4_WORD1_SPACE_USED         (1UL << 13)
517 #define FATTR4_WORD1_SYSTEM             (1UL << 14)
518 #define FATTR4_WORD1_TIME_ACCESS        (1UL << 15)
519 #define FATTR4_WORD1_TIME_ACCESS_SET    (1UL << 16)
520 #define FATTR4_WORD1_TIME_BACKUP        (1UL << 17)
521 #define FATTR4_WORD1_TIME_CREATE        (1UL << 18)
522 #define FATTR4_WORD1_TIME_DELTA         (1UL << 19)
523 #define FATTR4_WORD1_TIME_METADATA      (1UL << 20)
524 #define FATTR4_WORD1_TIME_MODIFY        (1UL << 21)
525 #define FATTR4_WORD1_TIME_MODIFY_SET    (1UL << 22)
526 #define FATTR4_WORD1_MOUNTED_ON_FILEID  (1UL << 23)
527 #define FATTR4_WORD1_FS_LAYOUT_TYPES    (1UL << 30)
528 #define FATTR4_WORD2_LAYOUT_BLKSIZE     (1UL << 1)
529 
530 #define NFSPROC4_NULL 0
531 #define NFSPROC4_COMPOUND 1
532 #define NFS4_VERSION 4
533 #define NFS4_MINOR_VERSION 0
534 
535 #if defined(CONFIG_NFS_V4_1)
536 #define NFS4_MAX_MINOR_VERSION 1
537 #else
538 #define NFS4_MAX_MINOR_VERSION 0
539 #endif /* CONFIG_NFS_V4_1 */
540 
541 #define NFS4_DEBUG 1
542 
543 /* Index of predefined Linux client operations */
544 
545 enum {
546 	NFSPROC4_CLNT_NULL = 0,		/* Unused */
547 	NFSPROC4_CLNT_READ,
548 	NFSPROC4_CLNT_WRITE,
549 	NFSPROC4_CLNT_COMMIT,
550 	NFSPROC4_CLNT_OPEN,
551 	NFSPROC4_CLNT_OPEN_CONFIRM,
552 	NFSPROC4_CLNT_OPEN_NOATTR,
553 	NFSPROC4_CLNT_OPEN_DOWNGRADE,
554 	NFSPROC4_CLNT_CLOSE,
555 	NFSPROC4_CLNT_SETATTR,
556 	NFSPROC4_CLNT_FSINFO,
557 	NFSPROC4_CLNT_RENEW,
558 	NFSPROC4_CLNT_SETCLIENTID,
559 	NFSPROC4_CLNT_SETCLIENTID_CONFIRM,
560 	NFSPROC4_CLNT_LOCK,
561 	NFSPROC4_CLNT_LOCKT,
562 	NFSPROC4_CLNT_LOCKU,
563 	NFSPROC4_CLNT_ACCESS,
564 	NFSPROC4_CLNT_GETATTR,
565 	NFSPROC4_CLNT_LOOKUP,
566 	NFSPROC4_CLNT_LOOKUP_ROOT,
567 	NFSPROC4_CLNT_REMOVE,
568 	NFSPROC4_CLNT_RENAME,
569 	NFSPROC4_CLNT_LINK,
570 	NFSPROC4_CLNT_SYMLINK,
571 	NFSPROC4_CLNT_CREATE,
572 	NFSPROC4_CLNT_PATHCONF,
573 	NFSPROC4_CLNT_STATFS,
574 	NFSPROC4_CLNT_READLINK,
575 	NFSPROC4_CLNT_READDIR,
576 	NFSPROC4_CLNT_SERVER_CAPS,
577 	NFSPROC4_CLNT_DELEGRETURN,
578 	NFSPROC4_CLNT_GETACL,
579 	NFSPROC4_CLNT_SETACL,
580 	NFSPROC4_CLNT_FS_LOCATIONS,
581 	NFSPROC4_CLNT_RELEASE_LOCKOWNER,
582 	NFSPROC4_CLNT_SECINFO,
583 
584 	/* nfs41 */
585 	NFSPROC4_CLNT_EXCHANGE_ID,
586 	NFSPROC4_CLNT_CREATE_SESSION,
587 	NFSPROC4_CLNT_DESTROY_SESSION,
588 	NFSPROC4_CLNT_SEQUENCE,
589 	NFSPROC4_CLNT_GET_LEASE_TIME,
590 	NFSPROC4_CLNT_RECLAIM_COMPLETE,
591 	NFSPROC4_CLNT_LAYOUTGET,
592 	NFSPROC4_CLNT_GETDEVICEINFO,
593 	NFSPROC4_CLNT_LAYOUTCOMMIT,
594 	NFSPROC4_CLNT_LAYOUTRETURN,
595 	NFSPROC4_CLNT_SECINFO_NO_NAME,
596 	NFSPROC4_CLNT_TEST_STATEID,
597 	NFSPROC4_CLNT_FREE_STATEID,
598 	NFSPROC4_CLNT_GETDEVICELIST,
599 };
600 
601 /* nfs41 types */
602 struct nfs4_sessionid {
603 	unsigned char data[NFS4_MAX_SESSIONID_LEN];
604 };
605 
606 /* Create Session Flags */
607 #define SESSION4_PERSIST	0x001
608 #define SESSION4_BACK_CHAN	0x002
609 #define SESSION4_RDMA		0x004
610 
611 #define SESSION4_FLAG_MASK_A	0x007
612 
613 enum state_protect_how4 {
614 	SP4_NONE	= 0,
615 	SP4_MACH_CRED	= 1,
616 	SP4_SSV		= 2
617 };
618 
619 enum pnfs_layouttype {
620 	LAYOUT_NFSV4_1_FILES  = 1,
621 	LAYOUT_OSD2_OBJECTS = 2,
622 	LAYOUT_BLOCK_VOLUME = 3,
623 };
624 
625 /* used for both layout return and recall */
626 enum pnfs_layoutreturn_type {
627 	RETURN_FILE = 1,
628 	RETURN_FSID = 2,
629 	RETURN_ALL  = 3
630 };
631 
632 enum pnfs_iomode {
633 	IOMODE_READ = 1,
634 	IOMODE_RW = 2,
635 	IOMODE_ANY = 3,
636 };
637 
638 enum pnfs_notify_deviceid_type4 {
639 	NOTIFY_DEVICEID4_CHANGE = 1 << 1,
640 	NOTIFY_DEVICEID4_DELETE = 1 << 2,
641 };
642 
643 #define NFL4_UFLG_MASK			0x0000003F
644 #define NFL4_UFLG_DENSE			0x00000001
645 #define NFL4_UFLG_COMMIT_THRU_MDS	0x00000002
646 #define NFL4_UFLG_STRIPE_UNIT_SIZE_MASK	0xFFFFFFC0
647 
648 /* Encoded in the loh_body field of type layouthint4 */
649 enum filelayout_hint_care4 {
650 	NFLH4_CARE_DENSE		= NFL4_UFLG_DENSE,
651 	NFLH4_CARE_COMMIT_THRU_MDS	= NFL4_UFLG_COMMIT_THRU_MDS,
652 	NFLH4_CARE_STRIPE_UNIT_SIZE	= 0x00000040,
653 	NFLH4_CARE_STRIPE_COUNT		= 0x00000080
654 };
655 
656 #define NFS4_DEVICEID4_SIZE 16
657 
658 struct nfs4_deviceid {
659 	char data[NFS4_DEVICEID4_SIZE];
660 };
661 
662 #endif
663 #endif
664 
665 /*
666  * Local variables:
667  *  c-basic-offset: 8
668  * End:
669  */
670