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9#ifndef LINUX_NFSD_NFSD_H
10#define LINUX_NFSD_NFSD_H
11
12#include <linux/types.h>
13#include <linux/mount.h>
14
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>
23
24#include <uapi/linux/nfsd/debug.h>
25
26#include "netns.h"
27#include "export.h"
28#include "stats.h"
29
30#undef ifdebug
31#ifdef CONFIG_SUNRPC_DEBUG
32# define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag)
33#else
34# define ifdebug(flag) if (0)
35#endif
36
37
38
39
40#define NFSD_SUPPORTED_MINOR_VERSION 2
41
42
43
44#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
45
46#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
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58
59#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
60
61struct readdir_cd {
62 __be32 err;
63};
64
65
66extern struct svc_program nfsd_program;
67extern const struct svc_version nfsd_version2, nfsd_version3,
68 nfsd_version4;
69extern struct mutex nfsd_mutex;
70extern spinlock_t nfsd_drc_lock;
71extern unsigned long nfsd_drc_max_mem;
72extern unsigned long nfsd_drc_mem_used;
73
74extern const struct seq_operations nfs_exports_op;
75
76
77
78
79struct nfsd_voidargs { };
80struct nfsd_voidres { };
81int nfssvc_decode_voidarg(struct svc_rqst *rqstp, __be32 *p);
82int nfssvc_encode_voidres(struct svc_rqst *rqstp, __be32 *p);
83
84
85
86
87int nfsd_svc(int nrservs, struct net *net, const struct cred *cred);
88int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
89
90int nfsd_nrthreads(struct net *);
91int nfsd_nrpools(struct net *);
92int nfsd_get_nrthreads(int n, int *, struct net *);
93int nfsd_set_nrthreads(int n, int *, struct net *);
94int nfsd_pool_stats_open(struct inode *, struct file *);
95int nfsd_pool_stats_release(struct inode *, struct file *);
96void nfsd_shutdown_threads(struct net *net);
97
98void nfsd_destroy(struct net *net);
99
100bool i_am_nfsd(void);
101
102struct nfsdfs_client {
103 struct kref cl_ref;
104 void (*cl_release)(struct kref *kref);
105};
106
107struct nfsdfs_client *get_nfsdfs_client(struct inode *);
108struct dentry *nfsd_client_mkdir(struct nfsd_net *nn,
109 struct nfsdfs_client *ncl, u32 id,
110 const struct tree_descr *,
111 struct dentry **fdentries);
112void nfsd_client_rmdir(struct dentry *dentry);
113
114
115#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
116#ifdef CONFIG_NFSD_V2_ACL
117extern const struct svc_version nfsd_acl_version2;
118#else
119#define nfsd_acl_version2 NULL
120#endif
121#ifdef CONFIG_NFSD_V3_ACL
122extern const struct svc_version nfsd_acl_version3;
123#else
124#define nfsd_acl_version3 NULL
125#endif
126#endif
127
128struct nfsd_net;
129
130enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
131int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change);
132int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change);
133void nfsd_reset_versions(struct nfsd_net *nn);
134int nfsd_create_serv(struct net *net);
135
136extern int nfsd_max_blksize;
137
138static inline int nfsd_v4client(struct svc_rqst *rq)
139{
140 return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
141}
142static inline struct user_namespace *
143nfsd_user_namespace(const struct svc_rqst *rqstp)
144{
145 const struct cred *cred = rqstp->rq_xprt->xpt_cred;
146 return cred ? cred->user_ns : &init_user_ns;
147}
148
149
150
151
152#ifdef CONFIG_NFSD_V4
153extern unsigned long max_delegations;
154int nfsd4_init_slabs(void);
155void nfsd4_free_slabs(void);
156int nfs4_state_start(void);
157int nfs4_state_start_net(struct net *net);
158void nfs4_state_shutdown(void);
159void nfs4_state_shutdown_net(struct net *net);
160int nfs4_reset_recoverydir(char *recdir);
161char * nfs4_recoverydir(void);
162bool nfsd4_spo_must_allow(struct svc_rqst *rqstp);
163#else
164static inline int nfsd4_init_slabs(void) { return 0; }
165static inline void nfsd4_free_slabs(void) { }
166static inline int nfs4_state_start(void) { return 0; }
167static inline int nfs4_state_start_net(struct net *net) { return 0; }
168static inline void nfs4_state_shutdown(void) { }
169static inline void nfs4_state_shutdown_net(struct net *net) { }
170static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
171static inline char * nfs4_recoverydir(void) {return NULL; }
172static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
173{
174 return false;
175}
176#endif
177
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179
180
181void nfsd_lockd_init(void);
182void nfsd_lockd_shutdown(void);
183
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186
187
188#define nfs_ok cpu_to_be32(NFS_OK)
189#define nfserr_perm cpu_to_be32(NFSERR_PERM)
190#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
191#define nfserr_io cpu_to_be32(NFSERR_IO)
192#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
193#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
194#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
195#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
196#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
197#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
198#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
199#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
200#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
201#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
202#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
203#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
204#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
205#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
206#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
207#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
208#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
209#define nfserr_stale cpu_to_be32(NFSERR_STALE)
210#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
211#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
212#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
213#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
214#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
215#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
216#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
217#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
218#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
219#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
220#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
221#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
222#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
223#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
224#define nfserr_same cpu_to_be32(NFSERR_SAME)
225#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
226#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
227#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
228#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
229#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
230#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
231#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
232#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
233#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
234#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
235#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
236#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
237#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
238#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
239#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
240#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
241#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
242#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
243#define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
244#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
245#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
246#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
247#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
248#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
249#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
250#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
251#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
252#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
253#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
254#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
255#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
256#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
257#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
258#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
259#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
260#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
261#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
262#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
263#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
264#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
265#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
266#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
267#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
268#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
269#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
270#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
271#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
272#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
273#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
274#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
275#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
276#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
277#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
278#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
279#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
280#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
281#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
282#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
283#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
284#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
285#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
286#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
287#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
288#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
289#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
290#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
291#define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP)
292#define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH)
293#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
294#define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED)
295#define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS)
296#define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
297#define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN)
298#define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG)
299#define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR)
300
301
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303
304
305#define nfserr_dropit cpu_to_be32(30000)
306
307#define nfserr_eof cpu_to_be32(30001)
308
309#define nfserr_replay_me cpu_to_be32(11001)
310
311#define nfserr_replay_cache cpu_to_be32(11002)
312
313
314#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
315
316#ifdef CONFIG_NFSD_V4
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332
333#define COMPOUND_SLACK_SPACE 140
334#define COMPOUND_ERR_SLACK_SPACE 16
335
336#define NFSD_LAUNDROMAT_MINTIMEOUT 1
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347
348#define NFSD4_SUPPORTED_ATTRS_WORD0 \
349(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
350 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
351 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
352 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
353 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
354 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
355 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
356 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
357 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
358 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
359
360#define NFSD4_SUPPORTED_ATTRS_WORD1 \
361(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
362 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
363 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
364 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
365 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
366 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
367
368#define NFSD4_SUPPORTED_ATTRS_WORD2 0
369
370
371#ifdef CONFIG_NFSD_PNFS
372#define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES
373#define PNFSD_SUPPORTED_ATTRS_WORD2 \
374(FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES)
375#else
376#define PNFSD_SUPPORTED_ATTRS_WORD1 0
377#define PNFSD_SUPPORTED_ATTRS_WORD2 0
378#endif
379
380#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
381 NFSD4_SUPPORTED_ATTRS_WORD0
382
383#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
384 (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1)
385
386#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
387 (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \
388 FATTR4_WORD2_SUPPATTR_EXCLCREAT)
389
390
391#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
392#define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL
393#else
394#define NFSD4_2_SECURITY_ATTRS 0
395#endif
396
397#define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
398 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \
399 FATTR4_WORD2_MODE_UMASK | \
400 NFSD4_2_SECURITY_ATTRS | \
401 FATTR4_WORD2_XATTR_SUPPORT)
402
403extern const u32 nfsd_suppattrs[3][3];
404
405static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr,
406 struct nfs42_netaddr *netaddr)
407{
408 struct sockaddr_in *sin = (struct sockaddr_in *)addr;
409 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr;
410 unsigned int port;
411 size_t ret_addr, ret_port;
412
413 switch (addr->sa_family) {
414 case AF_INET:
415 port = ntohs(sin->sin_port);
416 sprintf(netaddr->netid, "tcp");
417 netaddr->netid_len = 3;
418 break;
419 case AF_INET6:
420 port = ntohs(sin6->sin6_port);
421 sprintf(netaddr->netid, "tcp6");
422 netaddr->netid_len = 4;
423 break;
424 default:
425 return nfserr_inval;
426 }
427 ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr));
428 ret_port = snprintf(netaddr->addr + ret_addr,
429 RPCBIND_MAXUADDRLEN + 1 - ret_addr,
430 ".%u.%u", port >> 8, port & 0xff);
431 WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr);
432 netaddr->addr_len = ret_addr + ret_port;
433 return 0;
434}
435
436static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2)
437{
438 return !((bm1[0] & ~bm2[0]) ||
439 (bm1[1] & ~bm2[1]) ||
440 (bm1[2] & ~bm2[2]));
441}
442
443static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval)
444{
445 return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]);
446}
447
448
449#define NFSD_WRITEONLY_ATTRS_WORD1 \
450 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
451
452
453
454
455
456
457#define NFSD_WRITEABLE_ATTRS_WORD0 \
458 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL)
459#define NFSD_WRITEABLE_ATTRS_WORD1 \
460 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
461 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
462#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
463#define MAYBE_FATTR4_WORD2_SECURITY_LABEL \
464 FATTR4_WORD2_SECURITY_LABEL
465#else
466#define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0
467#endif
468#define NFSD_WRITEABLE_ATTRS_WORD2 \
469 (FATTR4_WORD2_MODE_UMASK \
470 | MAYBE_FATTR4_WORD2_SECURITY_LABEL)
471
472#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
473 NFSD_WRITEABLE_ATTRS_WORD0
474
475
476
477
478#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
479 (NFSD_WRITEABLE_ATTRS_WORD1 & \
480 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
481#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
482 NFSD_WRITEABLE_ATTRS_WORD2
483
484extern int nfsd4_is_junction(struct dentry *dentry);
485extern int register_cld_notifier(void);
486extern void unregister_cld_notifier(void);
487#ifdef CONFIG_NFSD_V4_2_INTER_SSC
488extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn);
489#endif
490
491#else
492static inline int nfsd4_is_junction(struct dentry *dentry)
493{
494 return 0;
495}
496
497#define register_cld_notifier() 0
498#define unregister_cld_notifier() do { } while(0)
499
500#endif
501
502#endif
503
