blob: 747f3b95bd11118aa477153fa97594127e2fbc1c [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>
Christoph Hellwig9c69de42014-05-06 19:37:13 +020018#include <linux/sunrpc/svc.h>
J. Bruce Fieldsc10bd392011-08-19 11:38:52 -040019#include <linux/sunrpc/msg_prot.h>
20
Christoph Hellwig6f226e22014-05-06 19:37:16 +020021#include <uapi/linux/nfsd/debug.h>
J. Bruce Fieldsc10bd392011-08-19 11:38:52 -040022
Christoph Hellwig7f944232014-05-06 19:37:15 +020023#include "stats.h"
Christoph Hellwigd430e8d52014-05-06 19:37:14 +020024#include "export.h"
25
Christoph Hellwig6f226e22014-05-06 19:37:16 +020026#undef ifdebug
27#ifdef NFSD_DEBUG
28# define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag)
29#else
30# define ifdebug(flag) if (0)
31#endif
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033/*
34 * nfsd version
35 */
Steve Dickson4bdc33e2013-05-02 13:18:57 -040036#define NFSD_SUPPORTED_MINOR_VERSION 2
J. Bruce Fieldsc10bd392011-08-19 11:38:52 -040037/*
38 * Maximum blocksizes supported by daemon under various circumstances.
39 */
40#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
41/* NFSv2 is limited by the protocol specification, see RFC 1094 */
42#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
43
44
45/*
46 * Largest number of bytes we need to allocate for an NFS
47 * call or reply. Used to control buffer sizes. We use
48 * the length of v3 WRITE, READDIR and READDIR replies
49 * which are an RPC header, up to 26 XDR units of reply
50 * data, and some page data.
51 *
52 * Note that accuracy here doesn't matter too much as the
53 * size is rounded up to a page size when allocating space.
54 */
55#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Linus Torvalds1da177e2005-04-16 15:20:36 -070057struct readdir_cd {
Al Viro131a21c2006-10-19 23:28:56 -070058 __be32 err; /* 0, nfserr, or nfserr_eof */
Linus Torvalds1da177e2005-04-16 15:20:36 -070059};
J. Bruce Fields0a3adad2009-11-04 18:12:35 -050060
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62extern struct svc_program nfsd_program;
63extern struct svc_version nfsd_version2, nfsd_version3,
64 nfsd_version4;
Neil Brownbedbdd82008-06-10 08:40:35 -040065extern struct mutex nfsd_mutex;
Andy Adamson4bd9b0f42009-06-24 15:37:45 -040066extern spinlock_t nfsd_drc_lock;
Zhang Yanfei697ce9b2013-02-22 16:35:47 -080067extern unsigned long nfsd_drc_max_mem;
68extern unsigned long nfsd_drc_mem_used;
Harvey Harrisona254b242008-02-20 12:49:00 -080069
James Morris88e9d342009-09-22 16:43:43 -070070extern const struct seq_operations nfs_exports_op;
Harvey Harrisona254b242008-02-20 12:49:00 -080071
Linus Torvalds1da177e2005-04-16 15:20:36 -070072/*
73 * Function prototypes.
74 */
Stanislav Kinsburskyd41a9412012-12-10 12:19:25 +030075int nfsd_svc(int nrservs, struct net *net);
Al Viroc7afef12006-10-19 23:29:02 -070076int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
Stanislav Kinsbursky9dd98452012-12-06 14:23:24 +030078int nfsd_nrthreads(struct net *);
79int nfsd_nrpools(struct net *);
80int nfsd_get_nrthreads(int n, int *, struct net *);
Stanislav Kinsbursky3938a0d2012-12-10 12:19:30 +030081int nfsd_set_nrthreads(int n, int *, struct net *);
J. Bruce Fields7f2e7dc2012-06-12 16:06:29 -040082int nfsd_pool_stats_open(struct inode *, struct file *);
83int nfsd_pool_stats_release(struct inode *, struct file *);
Harvey Harrisona254b242008-02-20 12:49:00 -080084
Stanislav Kinsbursky9dd98452012-12-06 14:23:24 +030085void nfsd_destroy(struct net *net);
Stanislav Kinsbursky19f7e2c2012-07-03 16:46:41 +040086
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +000087#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
88#ifdef CONFIG_NFSD_V2_ACL
89extern struct svc_version nfsd_acl_version2;
90#else
91#define nfsd_acl_version2 NULL
92#endif
93#ifdef CONFIG_NFSD_V3_ACL
94extern struct svc_version nfsd_acl_version3;
95#else
96#define nfsd_acl_version3 NULL
97#endif
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +000098#endif
99
NeilBrown6658d3a2006-10-02 02:17:46 -0700100enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
101int nfsd_vers(int vers, enum vers_op change);
Benny Halevy8daf2202009-04-03 08:28:59 +0300102int nfsd_minorversion(u32 minorversion, enum vers_op change);
NeilBrown6658d3a2006-10-02 02:17:46 -0700103void nfsd_reset_versions(void);
Stanislav Kinsbursky67774362012-12-10 12:19:20 +0300104int nfsd_create_serv(struct net *net);
NeilBrown6658d3a2006-10-02 02:17:46 -0700105
NeilBrown596bbe52006-10-04 02:15:48 -0700106extern int nfsd_max_blksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Steve Dickson03a816b2009-09-09 15:06:05 -0400108static inline int nfsd_v4client(struct svc_rqst *rq)
109{
110 return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
111}
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113/*
114 * NFSv4 State
115 */
116#ifdef CONFIG_NFSD_V4
Zhang Yanfei697ce9b2013-02-22 16:35:47 -0800117extern unsigned long max_delegations;
Bryan Schumaker72083392011-11-01 15:24:59 -0400118int nfsd4_init_slabs(void);
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400119void nfsd4_free_slabs(void);
J. Bruce Fields29ab23c2009-09-15 15:56:50 -0400120int nfs4_state_start(void);
Stanislav Kinsburskyf252bc62012-11-26 15:22:18 +0300121int nfs4_state_start_net(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122void nfs4_state_shutdown(void);
Stanislav Kinsburskyf252bc62012-11-26 15:22:18 +0300123void nfs4_state_shutdown_net(struct net *net);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124void nfs4_reset_lease(time_t leasetime);
NeilBrown0964a3d2005-06-23 22:04:32 -0700125int nfs4_reset_recoverydir(char *recdir);
J. Bruce Fields87f26f92012-07-27 15:49:26 -0400126char * nfs4_recoverydir(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127#else
Bryan Schumaker72083392011-11-01 15:24:59 -0400128static inline int nfsd4_init_slabs(void) { return 0; }
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400129static inline void nfsd4_free_slabs(void) { }
Stephen Rothwellc0826572009-09-17 17:03:06 +1000130static inline int nfs4_state_start(void) { return 0; }
Stanislav Kinsburskyf252bc62012-11-26 15:22:18 +0300131static inline int nfs4_state_start_net(struct net *net) { return 0; }
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400132static inline void nfs4_state_shutdown(void) { }
Stanislav Kinsburskyf252bc62012-11-26 15:22:18 +0300133static inline void nfs4_state_shutdown_net(struct net *net) { }
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -0400134static inline void nfs4_reset_lease(time_t leasetime) { }
135static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
J. Bruce Fields87f26f92012-07-27 15:49:26 -0400136static inline char * nfs4_recoverydir(void) {return NULL; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137#endif
138
139/*
140 * lockd binding
141 */
142void nfsd_lockd_init(void);
143void nfsd_lockd_shutdown(void);
144
145
146/*
147 * These macros provide pre-xdr'ed values for faster operation.
148 */
Harvey Harrison77f18f52009-02-11 17:16:58 -0800149#define nfs_ok cpu_to_be32(NFS_OK)
150#define nfserr_perm cpu_to_be32(NFSERR_PERM)
151#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
152#define nfserr_io cpu_to_be32(NFSERR_IO)
153#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
154#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
155#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
156#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
157#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
158#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
159#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
160#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
161#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
162#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
163#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
164#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
165#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
166#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
167#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
168#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
169#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
170#define nfserr_stale cpu_to_be32(NFSERR_STALE)
171#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
172#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
173#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
174#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
175#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
176#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
177#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
178#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
179#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
180#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
181#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
182#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
183#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
184#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
185#define nfserr_same cpu_to_be32(NFSERR_SAME)
186#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
187#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
188#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
189#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
190#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
191#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
192#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
193#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
194#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
195#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
196#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
197#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
198#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
J. Bruce Fieldsf9d75622010-07-08 11:02:09 -0400199#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
Harvey Harrison77f18f52009-02-11 17:16:58 -0800200#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
201#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
202#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
203#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
J. Bruce Fieldsf6af99e2011-01-04 18:02:15 -0500204#define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
Harvey Harrison77f18f52009-02-11 17:16:58 -0800205#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
206#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
207#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
208#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
209#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
210#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
211#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
212#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
213#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
Marc Eshel10add802009-04-03 08:27:40 +0300214#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
215#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
216#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
217#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
218#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
219#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
220#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
221#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
222#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
223#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
224#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
225#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
226#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
227#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
228#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
229#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
230#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
231#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
232#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
233#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
234#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
235#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
236#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
237#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
238#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
239#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
240#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
241#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
242#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
243#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
244#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
245#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
246#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
247#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
248#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
249#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
250#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
251#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
Steve Dickson4488cc92013-05-02 13:18:55 -0400252#define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP)
253#define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH)
Anna Schumaker2b8941b2014-08-27 11:17:56 -0400254#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
Steve Dickson4488cc92013-05-02 13:18:55 -0400255#define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED)
256#define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS)
257#define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
259/* error codes for internal use */
260/* if a request fails due to kmalloc failure, it gets dropped.
261 * Client should resend eventually
262 */
Harvey Harrison77f18f52009-02-11 17:16:58 -0800263#define nfserr_dropit cpu_to_be32(30000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264/* end-of-file indicator in readdir */
Harvey Harrison77f18f52009-02-11 17:16:58 -0800265#define nfserr_eof cpu_to_be32(30001)
Marc Eshel10add802009-04-03 08:27:40 +0300266/* replay detected */
267#define nfserr_replay_me cpu_to_be32(11001)
268/* nfs41 replay detected */
269#define nfserr_replay_cache cpu_to_be32(11002)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270
271/* Check for dir entries '.' and '..' */
272#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274#ifdef CONFIG_NFSD_V4
275
276/* before processing a COMPOUND operation, we have to check that there
277 * is enough space in the buffer for XDR encode to succeed. otherwise,
278 * we might process an operation with side effects, and be unable to
279 * tell the client that the operation succeeded.
280 *
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800281 * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 * needed to encode an "ordinary" _successful_ operation. (GETATTR,
283 * READ, READDIR, and READLINK have their own buffer checks.) if we
284 * fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
285 *
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800286 * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 * needed to encode an operation which has failed with NFS4ERR_RESOURCE.
288 * care is taken to ensure that we never fall below this level for any
289 * reason.
290 */
291#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
J. Bruce Fields04819bf2014-02-03 16:38:47 -0500292#define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293
J. Bruce Fieldsecec6e32010-10-11 16:49:44 -0400294#define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
296/*
297 * The following attributes are currently not supported by the NFSv4 server:
298 * ARCHIVE (deprecated anyway)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 * HIDDEN (unlikely to be supported any time soon)
300 * MIMETYPE (unlikely to be supported any time soon)
301 * QUOTA_* (will be supported in a forthcoming patch)
302 * SYSTEM (unlikely to be supported any time soon)
303 * TIME_BACKUP (unlikely to be supported any time soon)
304 * TIME_CREATE (unlikely to be supported any time soon)
305 */
Andy Adamson7e705702009-04-03 08:29:11 +0300306#define NFSD4_SUPPORTED_ATTRS_WORD0 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
308 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
309 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
310 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
311 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
312 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
313 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
J.Bruce Fields81c3f412006-10-04 02:16:19 -0700314 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
316 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
317
Andy Adamson7e705702009-04-03 08:29:11 +0300318#define NFSD4_SUPPORTED_ATTRS_WORD1 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
320 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
321 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
322 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
323 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
324 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
325
Andy Adamson7e705702009-04-03 08:29:11 +0300326#define NFSD4_SUPPORTED_ATTRS_WORD2 0
327
328#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
329 NFSD4_SUPPORTED_ATTRS_WORD0
330
331#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
332 NFSD4_SUPPORTED_ATTRS_WORD1
333
334#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
Benny Halevy8c18f202009-04-03 08:29:14 +0300335 (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
Andy Adamson7e705702009-04-03 08:29:11 +0300336
David Quigley18032ca2013-05-02 13:19:10 -0400337#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
338#define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
339 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SECURITY_LABEL)
340#else
341#define NFSD4_2_SUPPORTED_ATTRS_WORD2 0
342#endif
343
Andy Adamson7e705702009-04-03 08:29:11 +0300344static inline u32 nfsd_suppattrs0(u32 minorversion)
345{
346 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
347 : NFSD4_SUPPORTED_ATTRS_WORD0;
348}
349
350static inline u32 nfsd_suppattrs1(u32 minorversion)
351{
352 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
353 : NFSD4_SUPPORTED_ATTRS_WORD1;
354}
355
356static inline u32 nfsd_suppattrs2(u32 minorversion)
357{
David Quigley18032ca2013-05-02 13:19:10 -0400358 switch (minorversion) {
359 default: return NFSD4_2_SUPPORTED_ATTRS_WORD2;
360 case 1: return NFSD4_1_SUPPORTED_ATTRS_WORD2;
361 case 0: return NFSD4_SUPPORTED_ATTRS_WORD2;
362 }
Andy Adamson7e705702009-04-03 08:29:11 +0300363}
364
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
Bryan Schumakerc7e84722011-11-01 14:18:28 -0400366#define NFSD_WRITEONLY_ATTRS_WORD1 \
367 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
369/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
Bryan Schumakerc7e84722011-11-01 14:18:28 -0400370#define NFSD_WRITEABLE_ATTRS_WORD0 \
371 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL)
372#define NFSD_WRITEABLE_ATTRS_WORD1 \
373 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
374 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
David Quigley18032ca2013-05-02 13:19:10 -0400375#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
376#define NFSD_WRITEABLE_ATTRS_WORD2 FATTR4_WORD2_SECURITY_LABEL
377#else
Andy Adamson7e705702009-04-03 08:29:11 +0300378#define NFSD_WRITEABLE_ATTRS_WORD2 0
David Quigley18032ca2013-05-02 13:19:10 -0400379#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
Benny Halevy8c18f202009-04-03 08:29:14 +0300381#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
382 NFSD_WRITEABLE_ATTRS_WORD0
383/*
384 * we currently store the exclusive create verifier in the v_{a,m}time
385 * attributes so the client can't set these at create time using EXCLUSIVE4_1
386 */
387#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
388 (NFSD_WRITEABLE_ATTRS_WORD1 & \
389 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
390#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
391 NFSD_WRITEABLE_ATTRS_WORD2
392
Trond Myklebust11fcee022011-09-12 19:37:26 -0400393extern int nfsd4_is_junction(struct dentry *dentry);
Jeff Layton797a9d72012-03-29 07:52:49 -0400394extern int register_cld_notifier(void);
395extern void unregister_cld_notifier(void);
396#else /* CONFIG_NFSD_V4 */
Trond Myklebust11fcee022011-09-12 19:37:26 -0400397static inline int nfsd4_is_junction(struct dentry *dentry)
398{
399 return 0;
400}
401
Jeff Layton797a9d72012-03-29 07:52:49 -0400402#define register_cld_notifier() 0
403#define unregister_cld_notifier() do { } while(0)
404
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405#endif /* CONFIG_NFSD_V4 */
406
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407#endif /* LINUX_NFSD_NFSD_H */