1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Hodge-podge collection of knfsd-related stuff.
4 * I will sort this out later.
9 #ifndef LINUX_NFSD_NFSD_H
10 #define LINUX_NFSD_NFSD_H
12 #include <linux/types.h>
13 #include <linux/mount.h>
15 #include <linux/nfs.h>
16 #include <linux/nfs2.h>
17 #include <linux/nfs3.h>
18 #include <linux/nfs4.h>
19 #include <linux/sunrpc/svc.h>
20 #include <linux/sunrpc/svc_xprt.h>
21 #include <linux/sunrpc/msg_prot.h>
22 #include <linux/sunrpc/addr.h>
24 #include <uapi/linux/nfsd/debug.h>
31 #ifdef CONFIG_SUNRPC_DEBUG
32 # define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag)
34 # define ifdebug(flag) if (0)
40 #define NFSD_SUPPORTED_MINOR_VERSION 2
42 * Maximum blocksizes supported by daemon under various circumstances.
44 #define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
45 /* NFSv2 is limited by the protocol specification, see RFC 1094 */
46 #define NFSSVC_MAXBLKSIZE_V2 (8*1024)
50 * Largest number of bytes we need to allocate for an NFS
51 * call or reply. Used to control buffer sizes. We use
52 * the length of v3 WRITE, READDIR and READDIR replies
53 * which are an RPC header, up to 26 XDR units of reply
54 * data, and some page data.
56 * Note that accuracy here doesn't matter too much as the
57 * size is rounded up to a page size when allocating space.
59 #define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
62 __be32 err; /* 0, nfserr, or nfserr_eof */
65 /* Maximum number of operations per session compound */
66 #define NFSD_MAX_OPS_PER_COMPOUND 50
68 struct nfsd_genl_rqstp {
69 struct sockaddr rq_daddr;
70 struct sockaddr rq_saddr;
71 unsigned long rq_flags;
80 u32 rq_opnum[NFSD_MAX_OPS_PER_COMPOUND];
83 extern struct svc_program nfsd_program;
84 extern const struct svc_version nfsd_version2, nfsd_version3, nfsd_version4;
85 extern struct mutex nfsd_mutex;
86 extern spinlock_t nfsd_drc_lock;
87 extern unsigned long nfsd_drc_max_mem;
88 extern unsigned long nfsd_drc_mem_used;
90 extern const struct seq_operations nfs_exports_op;
93 * Common void argument and result helpers
95 struct nfsd_voidargs { };
96 struct nfsd_voidres { };
97 bool nfssvc_decode_voidarg(struct svc_rqst *rqstp,
98 struct xdr_stream *xdr);
99 bool nfssvc_encode_voidres(struct svc_rqst *rqstp,
100 struct xdr_stream *xdr);
103 * Function prototypes.
105 int nfsd_svc(int nrservs, struct net *net, const struct cred *cred);
106 int nfsd_dispatch(struct svc_rqst *rqstp);
108 int nfsd_nrthreads(struct net *);
109 int nfsd_nrpools(struct net *);
110 int nfsd_get_nrthreads(int n, int *, struct net *);
111 int nfsd_set_nrthreads(int n, int *, struct net *);
112 int nfsd_pool_stats_open(struct inode *, struct file *);
113 int nfsd_pool_stats_release(struct inode *, struct file *);
114 void nfsd_shutdown_threads(struct net *net);
116 bool i_am_nfsd(void);
118 struct nfsdfs_client {
120 void (*cl_release)(struct kref *kref);
123 struct nfsdfs_client *get_nfsdfs_client(struct inode *);
124 struct dentry *nfsd_client_mkdir(struct nfsd_net *nn,
125 struct nfsdfs_client *ncl, u32 id,
126 const struct tree_descr *,
127 struct dentry **fdentries);
128 void nfsd_client_rmdir(struct dentry *dentry);
131 #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
132 #ifdef CONFIG_NFSD_V2_ACL
133 extern const struct svc_version nfsd_acl_version2;
135 #define nfsd_acl_version2 NULL
137 #ifdef CONFIG_NFSD_V3_ACL
138 extern const struct svc_version nfsd_acl_version3;
140 #define nfsd_acl_version3 NULL
146 enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
147 int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change);
148 int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change);
149 void nfsd_reset_versions(struct nfsd_net *nn);
150 int nfsd_create_serv(struct net *net);
151 void nfsd_destroy_serv(struct net *net);
153 extern int nfsd_max_blksize;
155 static inline int nfsd_v4client(struct svc_rqst *rq)
157 return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
159 static inline struct user_namespace *
160 nfsd_user_namespace(const struct svc_rqst *rqstp)
162 const struct cred *cred = rqstp->rq_xprt->xpt_cred;
163 return cred ? cred->user_ns : &init_user_ns;
169 #ifdef CONFIG_NFSD_V4
170 extern unsigned long max_delegations;
171 int nfsd4_init_slabs(void);
172 void nfsd4_free_slabs(void);
173 int nfs4_state_start(void);
174 int nfs4_state_start_net(struct net *net);
175 void nfs4_state_shutdown(void);
176 void nfs4_state_shutdown_net(struct net *net);
177 int nfs4_reset_recoverydir(char *recdir);
178 char * nfs4_recoverydir(void);
179 bool nfsd4_spo_must_allow(struct svc_rqst *rqstp);
180 int nfsd4_create_laundry_wq(void);
181 void nfsd4_destroy_laundry_wq(void);
182 bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, struct inode *inode);
184 static inline int nfsd4_init_slabs(void) { return 0; }
185 static inline void nfsd4_free_slabs(void) { }
186 static inline int nfs4_state_start(void) { return 0; }
187 static inline int nfs4_state_start_net(struct net *net) { return 0; }
188 static inline void nfs4_state_shutdown(void) { }
189 static inline void nfs4_state_shutdown_net(struct net *net) { }
190 static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
191 static inline char * nfs4_recoverydir(void) {return NULL; }
192 static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
196 static inline int nfsd4_create_laundry_wq(void) { return 0; };
197 static inline void nfsd4_destroy_laundry_wq(void) {};
198 static inline bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp,
208 void nfsd_lockd_init(void);
209 void nfsd_lockd_shutdown(void);
213 * These macros provide pre-xdr'ed values for faster operation.
215 #define nfs_ok cpu_to_be32(NFS_OK)
216 #define nfserr_perm cpu_to_be32(NFSERR_PERM)
217 #define nfserr_noent cpu_to_be32(NFSERR_NOENT)
218 #define nfserr_io cpu_to_be32(NFSERR_IO)
219 #define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
220 #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
221 #define nfserr_acces cpu_to_be32(NFSERR_ACCES)
222 #define nfserr_exist cpu_to_be32(NFSERR_EXIST)
223 #define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
224 #define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
225 #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
226 #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
227 #define nfserr_inval cpu_to_be32(NFSERR_INVAL)
228 #define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
229 #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
230 #define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
231 #define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
232 #define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
233 #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
234 #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
235 #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
236 #define nfserr_stale cpu_to_be32(NFSERR_STALE)
237 #define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
238 #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
239 #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
240 #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
241 #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
242 #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
243 #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
244 #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
245 #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
246 #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
247 #define nfserr_denied cpu_to_be32(NFSERR_DENIED)
248 #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
249 #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
250 #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
251 #define nfserr_same cpu_to_be32(NFSERR_SAME)
252 #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
253 #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
254 #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
255 #define nfserr_moved cpu_to_be32(NFSERR_MOVED)
256 #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
257 #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
258 #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
259 #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
260 #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
261 #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
262 #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
263 #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
264 #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
265 #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
266 #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
267 #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
268 #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
269 #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
270 #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
271 #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
272 #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
273 #define nfserr_grace cpu_to_be32(NFSERR_GRACE)
274 #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
275 #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
276 #define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
277 #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
278 #define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
279 #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
280 #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
281 #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
282 #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
283 #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
284 #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
285 #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
286 #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
287 #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
288 #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
289 #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
290 #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
291 #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
292 #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
293 #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
294 #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
295 #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
296 #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
297 #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
298 #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
299 #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
300 #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
301 #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
302 #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
303 #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
304 #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
305 #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
306 #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
307 #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
308 #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
309 #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
310 #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
311 #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
312 #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
313 #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
314 #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
315 #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
316 #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
317 #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
318 #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP)
319 #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH)
320 #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
321 #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED)
322 #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS)
323 #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
324 #define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN)
325 #define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG)
326 #define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR)
328 /* error codes for internal use */
329 /* if a request fails due to kmalloc failure, it gets dropped.
330 * Client should resend eventually
332 #define nfserr_dropit cpu_to_be32(30000)
333 /* end-of-file indicator in readdir */
334 #define nfserr_eof cpu_to_be32(30001)
335 /* replay detected */
336 #define nfserr_replay_me cpu_to_be32(11001)
337 /* nfs41 replay detected */
338 #define nfserr_replay_cache cpu_to_be32(11002)
340 /* Check for dir entries '.' and '..' */
341 #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
343 #ifdef CONFIG_NFSD_V4
345 /* before processing a COMPOUND operation, we have to check that there
346 * is enough space in the buffer for XDR encode to succeed. otherwise,
347 * we might process an operation with side effects, and be unable to
348 * tell the client that the operation succeeded.
350 * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
351 * needed to encode an "ordinary" _successful_ operation. (GETATTR,
352 * READ, READDIR, and READLINK have their own buffer checks.) if we
353 * fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
355 * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
356 * needed to encode an operation which has failed with NFS4ERR_RESOURCE.
357 * care is taken to ensure that we never fall below this level for any
360 #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
361 #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */
363 #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */
364 #define NFSD_COURTESY_CLIENT_TIMEOUT (24 * 60 * 60) /* seconds */
365 #define NFSD_CLIENT_MAX_TRIM_PER_RUN 128
366 #define NFS4_CLIENTS_PER_GB 1024
367 #define NFSD_DELEGRETURN_TIMEOUT (HZ / 34) /* 30ms */
370 * The following attributes are currently not supported by the NFSv4 server:
371 * ARCHIVE (deprecated anyway)
372 * HIDDEN (unlikely to be supported any time soon)
373 * MIMETYPE (unlikely to be supported any time soon)
374 * QUOTA_* (will be supported in a forthcoming patch)
375 * SYSTEM (unlikely to be supported any time soon)
376 * TIME_BACKUP (unlikely to be supported any time soon)
377 * TIME_CREATE (unlikely to be supported any time soon)
379 #define NFSD4_SUPPORTED_ATTRS_WORD0 \
380 (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
381 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
382 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
383 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
384 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
385 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
386 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
387 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
388 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
389 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
391 #define NFSD4_SUPPORTED_ATTRS_WORD1 \
392 (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
393 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
394 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
395 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
396 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \
397 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
399 #define NFSD4_SUPPORTED_ATTRS_WORD2 0
402 #ifdef CONFIG_NFSD_PNFS
403 #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES
404 #define PNFSD_SUPPORTED_ATTRS_WORD2 \
405 (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES)
407 #define PNFSD_SUPPORTED_ATTRS_WORD1 0
408 #define PNFSD_SUPPORTED_ATTRS_WORD2 0
409 #endif /* CONFIG_NFSD_PNFS */
411 #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
412 NFSD4_SUPPORTED_ATTRS_WORD0
414 #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
415 (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1)
417 #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
418 (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \
419 FATTR4_WORD2_SUPPATTR_EXCLCREAT)
422 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
423 #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL
425 #define NFSD4_2_SECURITY_ATTRS 0
428 #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
429 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \
430 FATTR4_WORD2_MODE_UMASK | \
431 NFSD4_2_SECURITY_ATTRS | \
432 FATTR4_WORD2_XATTR_SUPPORT)
434 extern const u32 nfsd_suppattrs[3][3];
436 static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr,
437 struct nfs42_netaddr *netaddr)
439 struct sockaddr_in *sin = (struct sockaddr_in *)addr;
440 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
442 size_t ret_addr, ret_port;
444 switch (addr->sa_family) {
446 port = ntohs(sin->sin_port);
447 sprintf(netaddr->netid, "tcp");
448 netaddr->netid_len = 3;
451 port = ntohs(sin6->sin6_port);
452 sprintf(netaddr->netid, "tcp6");
453 netaddr->netid_len = 4;
458 ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr));
459 ret_port = snprintf(netaddr->addr + ret_addr,
460 RPCBIND_MAXUADDRLEN + 1 - ret_addr,
461 ".%u.%u", port >> 8, port & 0xff);
462 WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr);
463 netaddr->addr_len = ret_addr + ret_port;
467 static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2)
469 return !((bm1[0] & ~bm2[0]) ||
470 (bm1[1] & ~bm2[1]) ||
474 static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval)
476 return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]);
479 /* These will return ERR_INVAL if specified in GETATTR or READDIR. */
480 #define NFSD_WRITEONLY_ATTRS_WORD1 \
481 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
484 * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add
485 * a writeable attribute here without also adding code to parse it to
486 * nfsd4_decode_fattr().
488 #define NFSD_WRITEABLE_ATTRS_WORD0 \
489 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL)
490 #define NFSD_WRITEABLE_ATTRS_WORD1 \
491 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
492 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_CREATE \
493 | FATTR4_WORD1_TIME_MODIFY_SET)
494 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
495 #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \
496 FATTR4_WORD2_SECURITY_LABEL
498 #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0
500 #define NFSD_WRITEABLE_ATTRS_WORD2 \
501 (FATTR4_WORD2_MODE_UMASK \
502 | MAYBE_FATTR4_WORD2_SECURITY_LABEL)
504 #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
505 NFSD_WRITEABLE_ATTRS_WORD0
507 * we currently store the exclusive create verifier in the v_{a,m}time
508 * attributes so the client can't set these at create time using EXCLUSIVE4_1
510 #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
511 (NFSD_WRITEABLE_ATTRS_WORD1 & \
512 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
513 #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
514 NFSD_WRITEABLE_ATTRS_WORD2
516 extern int nfsd4_is_junction(struct dentry *dentry);
517 extern int register_cld_notifier(void);
518 extern void unregister_cld_notifier(void);
519 #ifdef CONFIG_NFSD_V4_2_INTER_SSC
520 extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn);
523 extern void nfsd4_init_leases_net(struct nfsd_net *nn);
525 #else /* CONFIG_NFSD_V4 */
526 static inline int nfsd4_is_junction(struct dentry *dentry)
531 static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { };
533 #define register_cld_notifier() 0
534 #define unregister_cld_notifier() do { } while(0)
536 #endif /* CONFIG_NFSD_V4 */
538 #endif /* LINUX_NFSD_NFSD_H */