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8#ifndef LINUX_NFSD_NFSD_H
9#define LINUX_NFSD_NFSD_H
10
11#include <linux/types.h>
12#include <linux/mount.h>
13
14#include <linux/nfs.h>
15#include <linux/nfs2.h>
16#include <linux/nfs3.h>
17#include <linux/nfs4.h>
18#include <linux/sunrpc/svc.h>
19#include <linux/sunrpc/msg_prot.h>
20
21#include <uapi/linux/nfsd/debug.h>
22
23#include "stats.h"
24#include "export.h"
25
26#undef ifdebug
27#ifdef CONFIG_SUNRPC_DEBUG
28# define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag)
29#else
30# define ifdebug(flag) if (0)
31#endif
32
33
34
35
36#define NFSD_SUPPORTED_MINOR_VERSION 2
37
38
39
40#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
41
42#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
43
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53
54
55#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
56
57struct readdir_cd {
58 __be32 err;
59};
60
61
62extern struct svc_program nfsd_program;
63extern struct svc_version nfsd_version2, nfsd_version3,
64 nfsd_version4;
65extern struct mutex nfsd_mutex;
66extern spinlock_t nfsd_drc_lock;
67extern unsigned long nfsd_drc_max_mem;
68extern unsigned long nfsd_drc_mem_used;
69
70extern const struct seq_operations nfs_exports_op;
71
72
73
74
75int nfsd_svc(int nrservs, struct net *net);
76int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);
77
78int nfsd_nrthreads(struct net *);
79int nfsd_nrpools(struct net *);
80int nfsd_get_nrthreads(int n, int *, struct net *);
81int nfsd_set_nrthreads(int n, int *, struct net *);
82int nfsd_pool_stats_open(struct inode *, struct file *);
83int nfsd_pool_stats_release(struct inode *, struct file *);
84
85void nfsd_destroy(struct net *net);
86
87#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
98#endif
99
100enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
101int nfsd_vers(int vers, enum vers_op change);
102int nfsd_minorversion(u32 minorversion, enum vers_op change);
103void nfsd_reset_versions(void);
104int nfsd_create_serv(struct net *net);
105
106extern int nfsd_max_blksize;
107
108static inline int nfsd_v4client(struct svc_rqst *rq)
109{
110 return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
111}
112
113
114
115
116#ifdef CONFIG_NFSD_V4
117extern unsigned long max_delegations;
118int nfsd4_init_slabs(void);
119void nfsd4_free_slabs(void);
120int nfs4_state_start(void);
121int nfs4_state_start_net(struct net *net);
122void nfs4_state_shutdown(void);
123void nfs4_state_shutdown_net(struct net *net);
124void nfs4_reset_lease(time_t leasetime);
125int nfs4_reset_recoverydir(char *recdir);
126char * nfs4_recoverydir(void);
127#else
128static inline int nfsd4_init_slabs(void) { return 0; }
129static inline void nfsd4_free_slabs(void) { }
130static inline int nfs4_state_start(void) { return 0; }
131static inline int nfs4_state_start_net(struct net *net) { return 0; }
132static inline void nfs4_state_shutdown(void) { }
133static inline void nfs4_state_shutdown_net(struct net *net) { }
134static inline void nfs4_reset_lease(time_t leasetime) { }
135static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
136static inline char * nfs4_recoverydir(void) {return NULL; }
137#endif
138
139
140
141
142void nfsd_lockd_init(void);
143void nfsd_lockd_shutdown(void);
144
145
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147
148
149#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)
199#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
200#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)
204#define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
205#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)
214#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)
252#define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP)
253#define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH)
254#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
255#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)
258
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262
263#define nfserr_dropit cpu_to_be32(30000)
264
265#define nfserr_eof cpu_to_be32(30001)
266
267#define nfserr_replay_me cpu_to_be32(11001)
268
269#define nfserr_replay_cache cpu_to_be32(11002)
270
271
272#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
273
274#ifdef CONFIG_NFSD_V4
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291#define COMPOUND_SLACK_SPACE 140
292#define COMPOUND_ERR_SLACK_SPACE 16
293
294#define NFSD_LAUNDROMAT_MINTIMEOUT 1
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305
306#define NFSD4_SUPPORTED_ATTRS_WORD0 \
307(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 \
314 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
315 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
316 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
317
318#define NFSD4_SUPPORTED_ATTRS_WORD1 \
319(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
326#define NFSD4_SUPPORTED_ATTRS_WORD2 0
327
328
329#ifdef CONFIG_NFSD_PNFS
330#define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES
331#define PNFSD_SUPPORTED_ATTRS_WORD2 \
332(FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES)
333#else
334#define PNFSD_SUPPORTED_ATTRS_WORD1 0
335#define PNFSD_SUPPORTED_ATTRS_WORD2 0
336#endif
337
338#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
339 NFSD4_SUPPORTED_ATTRS_WORD0
340
341#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
342 (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1)
343
344#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
345 (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \
346 FATTR4_WORD2_SUPPATTR_EXCLCREAT)
347
348
349#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
350#define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL
351#else
352#define NFSD4_2_SECURITY_ATTRS 0
353#endif
354
355#define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
356 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \
357 FATTR4_WORD2_MODE_UMASK | \
358 NFSD4_2_SECURITY_ATTRS)
359
360extern u32 nfsd_suppattrs[3][3];
361
362static inline bool bmval_is_subset(u32 *bm1, u32 *bm2)
363{
364 return !((bm1[0] & ~bm2[0]) ||
365 (bm1[1] & ~bm2[1]) ||
366 (bm1[2] & ~bm2[2]));
367}
368
369static inline bool nfsd_attrs_supported(u32 minorversion, u32 *bmval)
370{
371 return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]);
372}
373
374
375#define NFSD_WRITEONLY_ATTRS_WORD1 \
376 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
377
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382
383#define NFSD_WRITEABLE_ATTRS_WORD0 \
384 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL)
385#define NFSD_WRITEABLE_ATTRS_WORD1 \
386 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
387 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
388#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
389#define MAYBE_FATTR4_WORD2_SECURITY_LABEL \
390 FATTR4_WORD2_SECURITY_LABEL
391#else
392#define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0
393#endif
394#define NFSD_WRITEABLE_ATTRS_WORD2 \
395 (FATTR4_WORD2_MODE_UMASK \
396 | MAYBE_FATTR4_WORD2_SECURITY_LABEL)
397
398#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
399 NFSD_WRITEABLE_ATTRS_WORD0
400
401
402
403
404#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
405 (NFSD_WRITEABLE_ATTRS_WORD1 & \
406 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
407#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
408 NFSD_WRITEABLE_ATTRS_WORD2
409
410extern int nfsd4_is_junction(struct dentry *dentry);
411extern int register_cld_notifier(void);
412extern void unregister_cld_notifier(void);
413#else
414static inline int nfsd4_is_junction(struct dentry *dentry)
415{
416 return 0;
417}
418
419#define register_cld_notifier() 0
420#define unregister_cld_notifier() do { } while(0)
421
422#endif
423
424#endif
425
