1
2
3
4
5
6
7
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
44
45
46
47
48
49
50
51
52
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);
127bool nfsd4_spo_must_allow(struct svc_rqst *rqstp);
128#else
129static inline int nfsd4_init_slabs(void) { return 0; }
130static inline void nfsd4_free_slabs(void) { }
131static inline int nfs4_state_start(void) { return 0; }
132static inline int nfs4_state_start_net(struct net *net) { return 0; }
133static inline void nfs4_state_shutdown(void) { }
134static inline void nfs4_state_shutdown_net(struct net *net) { }
135static inline void nfs4_reset_lease(time_t leasetime) { }
136static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
137static inline char * nfs4_recoverydir(void) {return NULL; }
138static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
139{
140 return false;
141}
142#endif
143
144
145
146
147void nfsd_lockd_init(void);
148void nfsd_lockd_shutdown(void);
149
150
151
152
153
154#define nfs_ok cpu_to_be32(NFS_OK)
155#define nfserr_perm cpu_to_be32(NFSERR_PERM)
156#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
157#define nfserr_io cpu_to_be32(NFSERR_IO)
158#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
159#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
160#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
161#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
162#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
163#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
164#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
165#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
166#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
167#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
168#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
169#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
170#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
171#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
172#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
173#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
174#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
175#define nfserr_stale cpu_to_be32(NFSERR_STALE)
176#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
177#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
178#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
179#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
180#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
181#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
182#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
183#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
184#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
185#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
186#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
187#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
188#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
189#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
190#define nfserr_same cpu_to_be32(NFSERR_SAME)
191#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
192#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
193#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
194#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
195#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
196#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
197#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
198#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
199#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
200#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
201#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
202#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
203#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
204#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
205#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
206#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
207#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
208#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
209#define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER)
210#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
211#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
212#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
213#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
214#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
215#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
216#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
217#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
218#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
219#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
220#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
221#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
222#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
223#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
224#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
225#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
226#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
227#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
228#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
229#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
230#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
231#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
232#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
233#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
234#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
235#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
236#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
237#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
238#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
239#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
240#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
241#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
242#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
243#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
244#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
245#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
246#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
247#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
248#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
249#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
250#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
251#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
252#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
253#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
254#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
255#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
256#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
257#define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP)
258#define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH)
259#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP)
260#define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED)
261#define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS)
262#define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL)
263
264
265
266
267
268#define nfserr_dropit cpu_to_be32(30000)
269
270#define nfserr_eof cpu_to_be32(30001)
271
272#define nfserr_replay_me cpu_to_be32(11001)
273
274#define nfserr_replay_cache cpu_to_be32(11002)
275
276
277#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
278
279#ifdef CONFIG_NFSD_V4
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296#define COMPOUND_SLACK_SPACE 140
297#define COMPOUND_ERR_SLACK_SPACE 16
298
299#define NFSD_LAUNDROMAT_MINTIMEOUT 1
300
301
302
303
304
305
306
307
308
309
310
311#define NFSD4_SUPPORTED_ATTRS_WORD0 \
312(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
313 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
314 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
315 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \
316 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \
317 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \
318 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \
319 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \
320 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
321 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
322
323#define NFSD4_SUPPORTED_ATTRS_WORD1 \
324(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
325 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
326 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
327 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \
328 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
329 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
330
331#define NFSD4_SUPPORTED_ATTRS_WORD2 0
332
333
334#ifdef CONFIG_NFSD_PNFS
335#define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES
336#define PNFSD_SUPPORTED_ATTRS_WORD2 \
337(FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES)
338#else
339#define PNFSD_SUPPORTED_ATTRS_WORD1 0
340#define PNFSD_SUPPORTED_ATTRS_WORD2 0
341#endif
342
343#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
344 NFSD4_SUPPORTED_ATTRS_WORD0
345
346#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
347 (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1)
348
349#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
350 (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \
351 FATTR4_WORD2_SUPPATTR_EXCLCREAT)
352
353
354#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
355#define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL
356#else
357#define NFSD4_2_SECURITY_ATTRS 0
358#endif
359
360#define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
361 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \
362 FATTR4_WORD2_MODE_UMASK | \
363 NFSD4_2_SECURITY_ATTRS)
364
365extern const u32 nfsd_suppattrs[3][3];
366
367static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2)
368{
369 return !((bm1[0] & ~bm2[0]) ||
370 (bm1[1] & ~bm2[1]) ||
371 (bm1[2] & ~bm2[2]));
372}
373
374static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval)
375{
376 return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]);
377}
378
379
380#define NFSD_WRITEONLY_ATTRS_WORD1 \
381 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
382
383
384
385
386
387
388#define NFSD_WRITEABLE_ATTRS_WORD0 \
389 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL)
390#define NFSD_WRITEABLE_ATTRS_WORD1 \
391 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
392 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
393#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
394#define MAYBE_FATTR4_WORD2_SECURITY_LABEL \
395 FATTR4_WORD2_SECURITY_LABEL
396#else
397#define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0
398#endif
399#define NFSD_WRITEABLE_ATTRS_WORD2 \
400 (FATTR4_WORD2_MODE_UMASK \
401 | MAYBE_FATTR4_WORD2_SECURITY_LABEL)
402
403#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
404 NFSD_WRITEABLE_ATTRS_WORD0
405
406
407
408
409#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
410 (NFSD_WRITEABLE_ATTRS_WORD1 & \
411 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
412#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
413 NFSD_WRITEABLE_ATTRS_WORD2
414
415extern int nfsd4_is_junction(struct dentry *dentry);
416extern int register_cld_notifier(void);
417extern void unregister_cld_notifier(void);
418#else
419static inline int nfsd4_is_junction(struct dentry *dentry)
420{
421 return 0;
422}
423
424#define register_cld_notifier() 0
425#define unregister_cld_notifier() do { } while(0)
426
427#endif
428
429#endif
430
