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10#ifndef LINUX_NFSD_NFSD_H
11#define LINUX_NFSD_NFSD_H
12
13#include <linux/types.h>
14#include <linux/unistd.h>
15#include <linux/fs.h>
16#include <linux/posix_acl.h>
17#include <linux/mount.h>
18
19#include <linux/nfsd/debug.h>
20#include <linux/nfsd/nfsfh.h>
21#include <linux/nfsd/export.h>
22#include <linux/nfsd/stats.h>
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24
25
26#define NFSD_SUPPORTED_MINOR_VERSION 1
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30
31#define NFSD_MAY_NOP 0
32#define NFSD_MAY_EXEC 1
33#define NFSD_MAY_WRITE 2
34#define NFSD_MAY_READ 4
35#define NFSD_MAY_SATTR 8
36#define NFSD_MAY_TRUNC 16
37#define NFSD_MAY_LOCK 32
38#define NFSD_MAY_OWNER_OVERRIDE 64
39#define NFSD_MAY_LOCAL_ACCESS 128
40#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256
41
42#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
43#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
44
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47
48struct readdir_cd {
49 __be32 err;
50};
51typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);
52
53extern struct svc_program nfsd_program;
54extern struct svc_version nfsd_version2, nfsd_version3,
55 nfsd_version4;
56extern u32 nfsd_supported_minorversion;
57extern struct mutex nfsd_mutex;
58extern struct svc_serv *nfsd_serv;
59extern spinlock_t nfsd_drc_lock;
60extern unsigned int nfsd_drc_max_mem;
61extern unsigned int nfsd_drc_mem_used;
62
63extern const struct seq_operations nfs_exports_op;
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66
67
68int nfsd_svc(unsigned short port, int nrservs);
69int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
70
71int nfsd_nrthreads(void);
72int nfsd_nrpools(void);
73int nfsd_get_nrthreads(int n, int *);
74int nfsd_set_nrthreads(int n, int *);
75
76
77int fh_lock_parent(struct svc_fh *, struct dentry *);
78int nfsd_racache_init(int);
79void nfsd_racache_shutdown(void);
80int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
81 struct svc_export **expp);
82__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
83 const char *, unsigned int, struct svc_fh *);
84__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
85 const char *, unsigned int,
86 struct svc_export **, struct dentry **);
87__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
88 struct iattr *, int, time_t);
89#ifdef CONFIG_NFSD_V4
90__be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,
91 struct nfs4_acl *);
92int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **);
93#endif
94__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
95 char *name, int len, struct iattr *attrs,
96 int type, dev_t rdev, struct svc_fh *res);
97#ifdef CONFIG_NFSD_V3
98__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
99__be32 nfsd_create_v3(struct svc_rqst *, struct svc_fh *,
100 char *name, int len, struct iattr *attrs,
101 struct svc_fh *res, int createmode,
102 u32 *verifier, int *truncp, int *created);
103__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
104 loff_t, unsigned long);
105#endif
106__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, int,
107 int, struct file **);
108void nfsd_close(struct file *);
109__be32 nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,
110 loff_t, struct kvec *, int, unsigned long *);
111__be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
112 loff_t, struct kvec *,int, unsigned long *, int *);
113__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
114 char *, int *);
115__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
116 char *name, int len, char *path, int plen,
117 struct svc_fh *res, struct iattr *);
118__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
119 char *, int, struct svc_fh *);
120__be32 nfsd_rename(struct svc_rqst *,
121 struct svc_fh *, char *, int,
122 struct svc_fh *, char *, int);
123__be32 nfsd_remove(struct svc_rqst *,
124 struct svc_fh *, char *, int);
125__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
126 char *name, int len);
127int nfsd_truncate(struct svc_rqst *, struct svc_fh *,
128 unsigned long size);
129__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
130 loff_t *, struct readdir_cd *, filldir_t);
131__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
132 struct kstatfs *, int access);
133
134int nfsd_notify_change(struct inode *, struct iattr *);
135__be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
136 struct dentry *, int);
137int nfsd_sync_dir(struct dentry *dp);
138
139#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
140#ifdef CONFIG_NFSD_V2_ACL
141extern struct svc_version nfsd_acl_version2;
142#else
143#define nfsd_acl_version2 NULL
144#endif
145#ifdef CONFIG_NFSD_V3_ACL
146extern struct svc_version nfsd_acl_version3;
147#else
148#define nfsd_acl_version3 NULL
149#endif
150struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int);
151int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *);
152#endif
153
154enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
155int nfsd_vers(int vers, enum vers_op change);
156int nfsd_minorversion(u32 minorversion, enum vers_op change);
157void nfsd_reset_versions(void);
158int nfsd_create_serv(void);
159
160extern int nfsd_max_blksize;
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164
165#ifdef CONFIG_NFSD_V4
166extern unsigned int max_delegations;
167int nfs4_state_init(void);
168void nfsd4_free_slabs(void);
169int nfs4_state_start(void);
170void nfs4_state_shutdown(void);
171time_t nfs4_lease_time(void);
172void nfs4_reset_lease(time_t leasetime);
173int nfs4_reset_recoverydir(char *recdir);
174#else
175static inline int nfs4_state_init(void) { return 0; }
176static inline void nfsd4_free_slabs(void) { }
177static inline int nfs4_state_start(void) { return 0; }
178static inline void nfs4_state_shutdown(void) { }
179static inline time_t nfs4_lease_time(void) { return 0; }
180static inline void nfs4_reset_lease(time_t leasetime) { }
181static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
182#endif
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186
187void nfsd_lockd_init(void);
188void nfsd_lockd_shutdown(void);
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193
194#define nfs_ok cpu_to_be32(NFS_OK)
195#define nfserr_perm cpu_to_be32(NFSERR_PERM)
196#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
197#define nfserr_io cpu_to_be32(NFSERR_IO)
198#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
199#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
200#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
201#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
202#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
203#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
204#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
205#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
206#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
207#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
208#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
209#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
210#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
211#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
212#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
213#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
214#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
215#define nfserr_stale cpu_to_be32(NFSERR_STALE)
216#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
217#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
218#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
219#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
220#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
221#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
222#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
223#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
224#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
225#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
226#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
227#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
228#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
229#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
230#define nfserr_same cpu_to_be32(NFSERR_SAME)
231#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
232#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
233#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
234#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
235#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
236#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
237#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
238#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
239#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
240#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
241#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
242#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
243#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
244#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
245#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
246#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
247#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
248#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
249#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
250#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
251#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
252#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
253#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
254#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
255#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
256#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
257#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
258#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
259#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
260#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
261#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
262#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
263#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
264#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
265#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
266#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
267#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
268#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
269#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
270#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
271#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
272#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
273#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
274#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
275#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
276#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
277#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
278#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
279#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
280#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
281#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
282#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
283#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
284#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
285#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
286#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
287#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
288#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
289#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
290#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
291#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
292#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
293#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
294#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
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300#define nfserr_dropit cpu_to_be32(30000)
301
302#define nfserr_eof cpu_to_be32(30001)
303
304#define nfserr_replay_me cpu_to_be32(11001)
305
306#define nfserr_replay_cache cpu_to_be32(11002)
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308
309#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
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314extern struct timeval nfssvc_boot;
315
316#ifdef CONFIG_NFSD_V4
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333#define COMPOUND_SLACK_SPACE 140
334#define COMPOUND_ERR_SLACK_SPACE 12
335
336#define NFSD_LEASE_TIME (nfs4_lease_time())
337#define NFSD_LAUNDROMAT_MINTIMEOUT 10
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349#define NFSD4_SUPPORTED_ATTRS_WORD0 \
350(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
351 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
352 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
353 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
354 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
355 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
356 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
357 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
358 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
359 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
360
361#define NFSD4_SUPPORTED_ATTRS_WORD1 \
362(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
363 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
364 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
365 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
366 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
367 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
368
369#define NFSD4_SUPPORTED_ATTRS_WORD2 0
370
371#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
372 NFSD4_SUPPORTED_ATTRS_WORD0
373
374#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
375 NFSD4_SUPPORTED_ATTRS_WORD1
376
377#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
378 (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
379
380static inline u32 nfsd_suppattrs0(u32 minorversion)
381{
382 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
383 : NFSD4_SUPPORTED_ATTRS_WORD0;
384}
385
386static inline u32 nfsd_suppattrs1(u32 minorversion)
387{
388 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
389 : NFSD4_SUPPORTED_ATTRS_WORD1;
390}
391
392static inline u32 nfsd_suppattrs2(u32 minorversion)
393{
394 return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
395 : NFSD4_SUPPORTED_ATTRS_WORD2;
396}
397
398
399#define NFSD_WRITEONLY_ATTRS_WORD1 \
400(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
401
402
403#define NFSD_WRITEABLE_ATTRS_WORD0 \
404(FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL )
405#define NFSD_WRITEABLE_ATTRS_WORD1 \
406(FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
407 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
408#define NFSD_WRITEABLE_ATTRS_WORD2 0
409
410#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
411 NFSD_WRITEABLE_ATTRS_WORD0
412
413
414
415
416#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
417 (NFSD_WRITEABLE_ATTRS_WORD1 & \
418 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
419#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
420 NFSD_WRITEABLE_ATTRS_WORD2
421
422#endif
423
424#endif
425
