blob: 58134a23fdfbaebfbb0482e510e2d0e73bc7e44e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Hodge-podge collection of knfsd-related stuff.
3 * I will sort this out later.
4 *
5 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
6 */
7
8#ifndef LINUX_NFSD_NFSD_H
9#define LINUX_NFSD_NFSD_H
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/mount.h>
13
J. Bruce Fieldsc10bd392011-08-19 11:38:52 -040014#include <linux/nfs.h>
15#include <linux/nfs2.h>
16#include <linux/nfs3.h>
17#include <linux/nfs4.h>
18#include <linux/sunrpc/msg_prot.h>
19
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <linux/nfsd/debug.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include <linux/nfsd/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/nfsd/stats.h>
J. Bruce Fieldsc10bd392011-08-19 11:38:52 -040023
Linus Torvalds1da177e2005-04-16 15:20:36 -070024/*
25 * nfsd version
26 */
Marc Eshelf3ec22b2009-04-03 08:29:02 +030027#define NFSD_SUPPORTED_MINOR_VERSION 1
J. Bruce Fieldsc10bd392011-08-19 11:38:52 -040028/*
29 * Maximum blocksizes supported by daemon under various circumstances.
30 */
31#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
32/* NFSv2 is limited by the protocol specification, see RFC 1094 */
33#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
34
35
36/*
37 * Largest number of bytes we need to allocate for an NFS
38 * call or reply. Used to control buffer sizes. We use
39 * the length of v3 WRITE, READDIR and READDIR replies
40 * which are an RPC header, up to 26 XDR units of reply
41 * data, and some page data.
42 *
43 * Note that accuracy here doesn't matter too much as the
44 * size is rounded up to a page size when allocating space.
45 */
46#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Linus Torvalds1da177e2005-04-16 15:20:36 -070048struct readdir_cd {
Al Viro131a21c2006-10-19 23:28:56 -070049 __be32 err; /* 0, nfserr, or nfserr_eof */
Linus Torvalds1da177e2005-04-16 15:20:36 -070050};
J. Bruce Fields0a3adad2009-11-04 18:12:35 -050051
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53extern struct svc_program nfsd_program;
54extern struct svc_version nfsd_version2, nfsd_version3,
55 nfsd_version4;
Benny Halevy8daf2202009-04-03 08:28:59 +030056extern u32 nfsd_supported_minorversion;
Neil Brownbedbdd82008-06-10 08:40:35 -040057extern struct mutex nfsd_mutex;
NeilBrown70c3b762005-11-07 01:00:25 -080058extern struct svc_serv *nfsd_serv;
Andy Adamson4bd9b0f42009-06-24 15:37:45 -040059extern spinlock_t nfsd_drc_lock;
Andy Adamson0c193052009-07-27 19:09:19 -040060extern unsigned int nfsd_drc_max_mem;
61extern unsigned int nfsd_drc_mem_used;
Harvey Harrisona254b242008-02-20 12:49:00 -080062
James Morris88e9d342009-09-22 16:43:43 -070063extern const struct seq_operations nfs_exports_op;
Harvey Harrisona254b242008-02-20 12:49:00 -080064
Linus Torvalds1da177e2005-04-16 15:20:36 -070065/*
66 * Function prototypes.
67 */
68int nfsd_svc(unsigned short port, int nrservs);
Al Viroc7afef12006-10-19 23:29:02 -070069int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
Harvey Harrisona254b242008-02-20 12:49:00 -080071int nfsd_nrthreads(void);
72int nfsd_nrpools(void);
73int nfsd_get_nrthreads(int n, int *);
74int nfsd_set_nrthreads(int n, int *);
75
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +000076#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
77#ifdef CONFIG_NFSD_V2_ACL
78extern struct svc_version nfsd_acl_version2;
79#else
80#define nfsd_acl_version2 NULL
81#endif
82#ifdef CONFIG_NFSD_V3_ACL
83extern struct svc_version nfsd_acl_version3;
84#else
85#define nfsd_acl_version3 NULL
86#endif
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +000087#endif
88
NeilBrown6658d3a2006-10-02 02:17:46 -070089enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
90int nfsd_vers(int vers, enum vers_op change);
Benny Halevy8daf2202009-04-03 08:28:59 +030091int nfsd_minorversion(u32 minorversion, enum vers_op change);
NeilBrown6658d3a2006-10-02 02:17:46 -070092void nfsd_reset_versions(void);
NeilBrownb41b66d2006-10-02 02:17:48 -070093int nfsd_create_serv(void);
NeilBrown6658d3a2006-10-02 02:17:46 -070094
NeilBrown596bbe52006-10-04 02:15:48 -070095extern int nfsd_max_blksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -070096
Steve Dickson03a816b2009-09-09 15:06:05 -040097static inline int nfsd_v4client(struct svc_rqst *rq)
98{
99 return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
100}
101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102/*
103 * NFSv4 State
104 */
105#ifdef CONFIG_NFSD_V4
Meelap Shahc2f1a552007-07-17 04:04:39 -0700106extern unsigned int max_delegations;
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400107int nfs4_state_init(void);
108void nfsd4_free_slabs(void);
J. Bruce Fields29ab23c2009-09-15 15:56:50 -0400109int nfs4_state_start(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110void nfs4_state_shutdown(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111void nfs4_reset_lease(time_t leasetime);
NeilBrown0964a3d2005-06-23 22:04:32 -0700112int nfs4_reset_recoverydir(char *recdir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113#else
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400114static inline int nfs4_state_init(void) { return 0; }
115static inline void nfsd4_free_slabs(void) { }
Stephen Rothwellc0826572009-09-17 17:03:06 +1000116static inline int nfs4_state_start(void) { return 0; }
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400117static inline void nfs4_state_shutdown(void) { }
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400118static inline void nfs4_reset_lease(time_t leasetime) { }
119static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120#endif
121
122/*
123 * lockd binding
124 */
125void nfsd_lockd_init(void);
126void nfsd_lockd_shutdown(void);
127
128
129/*
130 * These macros provide pre-xdr'ed values for faster operation.
131 */
Harvey Harrison77f18f52009-02-11 17:16:58 -0800132#define nfs_ok cpu_to_be32(NFS_OK)
133#define nfserr_perm cpu_to_be32(NFSERR_PERM)
134#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
135#define nfserr_io cpu_to_be32(NFSERR_IO)
136#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
137#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
138#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
139#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
140#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
141#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
142#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
143#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
144#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
145#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
146#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
147#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
148#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
149#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
150#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
151#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
152#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
153#define nfserr_stale cpu_to_be32(NFSERR_STALE)
154#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
155#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
156#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
157#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
158#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
159#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
160#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
161#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
162#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
163#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
164#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
165#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
166#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
167#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
168#define nfserr_same cpu_to_be32(NFSERR_SAME)
169#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
170#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
171#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
172#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
173#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
174#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
175#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
176#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
177#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
178#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
179#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
180#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
181#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
J. Bruce Fieldsf9d75622010-07-08 11:02:09 -0400182#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
Harvey Harrison77f18f52009-02-11 17:16:58 -0800183#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
184#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
185#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
186#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
J. Bruce Fieldsf6af99e2011-01-04 18:02:15 -0500187#define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
Harvey Harrison77f18f52009-02-11 17:16:58 -0800188#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
189#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
190#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
191#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
192#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
193#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
194#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
195#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
196#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
Marc Eshel10add802009-04-03 08:27:40 +0300197#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
198#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
199#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
200#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
201#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
202#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
203#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
204#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
205#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
206#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
207#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
208#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
209#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
210#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
211#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
212#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
213#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
214#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
215#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
216#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
217#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
218#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
219#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
220#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
221#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
222#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
223#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
224#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
225#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
226#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
227#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
228#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
229#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
230#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
231#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
232#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
233#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
234#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
236/* error codes for internal use */
237/* if a request fails due to kmalloc failure, it gets dropped.
238 * Client should resend eventually
239 */
Harvey Harrison77f18f52009-02-11 17:16:58 -0800240#define nfserr_dropit cpu_to_be32(30000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241/* end-of-file indicator in readdir */
Harvey Harrison77f18f52009-02-11 17:16:58 -0800242#define nfserr_eof cpu_to_be32(30001)
Marc Eshel10add802009-04-03 08:27:40 +0300243/* replay detected */
244#define nfserr_replay_me cpu_to_be32(11001)
245/* nfs41 replay detected */
246#define nfserr_replay_cache cpu_to_be32(11002)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
248/* Check for dir entries '.' and '..' */
249#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
250
251/*
252 * Time of server startup
253 */
254extern struct timeval nfssvc_boot;
255
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256#ifdef CONFIG_NFSD_V4
257
J. Bruce Fieldscf07d2e2010-02-28 23:20:19 -0500258extern time_t nfsd4_lease;
J. Bruce Fieldsefc4bb4f2010-03-02 11:04:06 -0500259extern time_t nfsd4_grace;
J. Bruce Fieldscf07d2e2010-02-28 23:20:19 -0500260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261/* before processing a COMPOUND operation, we have to check that there
262 * is enough space in the buffer for XDR encode to succeed. otherwise,
263 * we might process an operation with side effects, and be unable to
264 * tell the client that the operation succeeded.
265 *
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800266 * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 * needed to encode an "ordinary" _successful_ operation. (GETATTR,
268 * READ, READDIR, and READLINK have their own buffer checks.) if we
269 * fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
270 *
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800271 * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 * needed to encode an operation which has failed with NFS4ERR_RESOURCE.
273 * care is taken to ensure that we never fall below this level for any
274 * reason.
275 */
276#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
277#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */
278
J. Bruce Fieldsecec6e32010-10-11 16:49:44 -0400279#define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
281/*
282 * The following attributes are currently not supported by the NFSv4 server:
283 * ARCHIVE (deprecated anyway)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 * HIDDEN (unlikely to be supported any time soon)
285 * MIMETYPE (unlikely to be supported any time soon)
286 * QUOTA_* (will be supported in a forthcoming patch)
287 * SYSTEM (unlikely to be supported any time soon)
288 * TIME_BACKUP (unlikely to be supported any time soon)
289 * TIME_CREATE (unlikely to be supported any time soon)
290 */
Andy Adamson7e705702009-04-03 08:29:11 +0300291#define NFSD4_SUPPORTED_ATTRS_WORD0 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
293 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
294 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
295 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
296 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
297 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
298 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
J.Bruce Fields81c3f412006-10-04 02:16:19 -0700299 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
301 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
302
Andy Adamson7e705702009-04-03 08:29:11 +0300303#define NFSD4_SUPPORTED_ATTRS_WORD1 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
305 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
306 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
307 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
308 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
309 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
310
Andy Adamson7e705702009-04-03 08:29:11 +0300311#define NFSD4_SUPPORTED_ATTRS_WORD2 0
312
313#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
314 NFSD4_SUPPORTED_ATTRS_WORD0
315
316#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
317 NFSD4_SUPPORTED_ATTRS_WORD1
318
319#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
Benny Halevy8c18f202009-04-03 08:29:14 +0300320 (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
Andy Adamson7e705702009-04-03 08:29:11 +0300321
322static inline u32 nfsd_suppattrs0(u32 minorversion)
323{
324 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
325 : NFSD4_SUPPORTED_ATTRS_WORD0;
326}
327
328static inline u32 nfsd_suppattrs1(u32 minorversion)
329{
330 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
331 : NFSD4_SUPPORTED_ATTRS_WORD1;
332}
333
334static inline u32 nfsd_suppattrs2(u32 minorversion)
335{
336 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
337 : NFSD4_SUPPORTED_ATTRS_WORD2;
338}
339
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
341#define NFSD_WRITEONLY_ATTRS_WORD1 \
342(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
343
344/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
345#define NFSD_WRITEABLE_ATTRS_WORD0 \
346(FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL )
347#define NFSD_WRITEABLE_ATTRS_WORD1 \
348(FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
J. Bruce Fieldse36cd4a2008-04-24 16:59:30 -0400349 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
Andy Adamson7e705702009-04-03 08:29:11 +0300350#define NFSD_WRITEABLE_ATTRS_WORD2 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351
Benny Halevy8c18f202009-04-03 08:29:14 +0300352#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
353 NFSD_WRITEABLE_ATTRS_WORD0
354/*
355 * we currently store the exclusive create verifier in the v_{a,m}time
356 * attributes so the client can't set these at create time using EXCLUSIVE4_1
357 */
358#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
359 (NFSD_WRITEABLE_ATTRS_WORD1 & \
360 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
361#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
362 NFSD_WRITEABLE_ATTRS_WORD2
363
Trond Myklebust11fcee022011-09-12 19:37:26 -0400364extern int nfsd4_is_junction(struct dentry *dentry);
365#else
366static inline int nfsd4_is_junction(struct dentry *dentry)
367{
368 return 0;
369}
370
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371#endif /* CONFIG_NFSD_V4 */
372
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373#endif /* LINUX_NFSD_NFSD_H */