1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Hodge-podge collection of knfsd-related stuff. |
4 | * I will sort this out later. |
5 | * |
6 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
7 | */ |
8 | |
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 | * nfsd version |
39 | */ |
40 | #define NFSD_SUPPORTED_MINOR_VERSION 2 |
41 | /* |
42 | * Maximum blocksizes supported by daemon under various circumstances. |
43 | */ |
44 | #define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD |
45 | /* NFSv2 is limited by the protocol specification, see RFC 1094 */ |
46 | #define NFSSVC_MAXBLKSIZE_V2 (8*1024) |
47 | |
48 | |
49 | /* |
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. |
55 | * |
56 | * Note that accuracy here doesn't matter too much as the |
57 | * size is rounded up to a page size when allocating space. |
58 | */ |
59 | #define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE) |
60 | |
61 | struct readdir_cd { |
62 | __be32 err; /* 0, nfserr, or nfserr_eof */ |
63 | }; |
64 | |
65 | /* Maximum number of operations per session compound */ |
66 | #define NFSD_MAX_OPS_PER_COMPOUND 50 |
67 | |
68 | struct nfsd_genl_rqstp { |
69 | struct sockaddr rq_daddr; |
70 | struct sockaddr rq_saddr; |
71 | unsigned long rq_flags; |
72 | ktime_t rq_stime; |
73 | __be32 rq_xid; |
74 | u32 rq_vers; |
75 | u32 rq_prog; |
76 | u32 rq_proc; |
77 | |
78 | /* NFSv4 compound */ |
79 | u32 rq_opcnt; |
80 | u32 rq_opnum[NFSD_MAX_OPS_PER_COMPOUND]; |
81 | }; |
82 | |
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; |
89 | extern atomic_t nfsd_th_cnt; /* number of available threads */ |
90 | |
91 | extern const struct seq_operations nfs_exports_op; |
92 | |
93 | /* |
94 | * Common void argument and result helpers |
95 | */ |
96 | struct nfsd_voidargs { }; |
97 | struct nfsd_voidres { }; |
98 | bool nfssvc_decode_voidarg(struct svc_rqst *rqstp, |
99 | struct xdr_stream *xdr); |
100 | bool nfssvc_encode_voidres(struct svc_rqst *rqstp, |
101 | struct xdr_stream *xdr); |
102 | |
103 | /* |
104 | * Function prototypes. |
105 | */ |
106 | int nfsd_svc(int nrservs, struct net *net, const struct cred *cred); |
107 | int nfsd_dispatch(struct svc_rqst *rqstp); |
108 | |
109 | int nfsd_nrthreads(struct net *); |
110 | int nfsd_nrpools(struct net *); |
111 | int nfsd_get_nrthreads(int n, int *, struct net *); |
112 | int nfsd_set_nrthreads(int n, int *, struct net *); |
113 | int nfsd_pool_stats_open(struct inode *, struct file *); |
114 | int nfsd_pool_stats_release(struct inode *, struct file *); |
115 | void nfsd_shutdown_threads(struct net *net); |
116 | |
117 | bool i_am_nfsd(void); |
118 | |
119 | struct nfsdfs_client { |
120 | struct kref cl_ref; |
121 | void (*cl_release)(struct kref *kref); |
122 | }; |
123 | |
124 | struct nfsdfs_client *get_nfsdfs_client(struct inode *); |
125 | struct dentry *nfsd_client_mkdir(struct nfsd_net *nn, |
126 | struct nfsdfs_client *ncl, u32 id, |
127 | const struct tree_descr *, |
128 | struct dentry **fdentries); |
129 | void nfsd_client_rmdir(struct dentry *dentry); |
130 | |
131 | |
132 | #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) |
133 | #ifdef CONFIG_NFSD_V2_ACL |
134 | extern const struct svc_version nfsd_acl_version2; |
135 | #else |
136 | #define nfsd_acl_version2 NULL |
137 | #endif |
138 | #ifdef CONFIG_NFSD_V3_ACL |
139 | extern const struct svc_version nfsd_acl_version3; |
140 | #else |
141 | #define nfsd_acl_version3 NULL |
142 | #endif |
143 | #endif |
144 | |
145 | struct nfsd_net; |
146 | |
147 | enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL }; |
148 | int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change); |
149 | int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change); |
150 | void nfsd_reset_versions(struct nfsd_net *nn); |
151 | int nfsd_create_serv(struct net *net); |
152 | void nfsd_destroy_serv(struct net *net); |
153 | |
154 | extern int nfsd_max_blksize; |
155 | |
156 | static inline int nfsd_v4client(struct svc_rqst *rq) |
157 | { |
158 | return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4; |
159 | } |
160 | static inline struct user_namespace * |
161 | nfsd_user_namespace(const struct svc_rqst *rqstp) |
162 | { |
163 | const struct cred *cred = rqstp->rq_xprt->xpt_cred; |
164 | return cred ? cred->user_ns : &init_user_ns; |
165 | } |
166 | |
167 | /* |
168 | * NFSv4 State |
169 | */ |
170 | #ifdef CONFIG_NFSD_V4 |
171 | extern unsigned long max_delegations; |
172 | int nfsd4_init_slabs(void); |
173 | void nfsd4_free_slabs(void); |
174 | int nfs4_state_start(void); |
175 | int nfs4_state_start_net(struct net *net); |
176 | void nfs4_state_shutdown(void); |
177 | void nfs4_state_shutdown_net(struct net *net); |
178 | int nfs4_reset_recoverydir(char *recdir); |
179 | char * nfs4_recoverydir(void); |
180 | bool nfsd4_spo_must_allow(struct svc_rqst *rqstp); |
181 | int nfsd4_create_laundry_wq(void); |
182 | void nfsd4_destroy_laundry_wq(void); |
183 | bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, struct inode *inode); |
184 | #else |
185 | static inline int nfsd4_init_slabs(void) { return 0; } |
186 | static inline void nfsd4_free_slabs(void) { } |
187 | static inline int nfs4_state_start(void) { return 0; } |
188 | static inline int nfs4_state_start_net(struct net *net) { return 0; } |
189 | static inline void nfs4_state_shutdown(void) { } |
190 | static inline void nfs4_state_shutdown_net(struct net *net) { } |
191 | static inline int nfs4_reset_recoverydir(char *recdir) { return 0; } |
192 | static inline char * nfs4_recoverydir(void) {return NULL; } |
193 | static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) |
194 | { |
195 | return false; |
196 | } |
197 | static inline int nfsd4_create_laundry_wq(void) { return 0; }; |
198 | static inline void nfsd4_destroy_laundry_wq(void) {}; |
199 | static inline bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, |
200 | struct inode *inode) |
201 | { |
202 | return false; |
203 | } |
204 | #endif |
205 | |
206 | /* |
207 | * lockd binding |
208 | */ |
209 | void nfsd_lockd_init(void); |
210 | void nfsd_lockd_shutdown(void); |
211 | |
212 | |
213 | /* |
214 | * These macros provide pre-xdr'ed values for faster operation. |
215 | */ |
216 | #define nfs_ok cpu_to_be32(NFS_OK) |
217 | #define nfserr_perm cpu_to_be32(NFSERR_PERM) |
218 | #define nfserr_noent cpu_to_be32(NFSERR_NOENT) |
219 | #define nfserr_io cpu_to_be32(NFSERR_IO) |
220 | #define nfserr_nxio cpu_to_be32(NFSERR_NXIO) |
221 | #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN) |
222 | #define nfserr_acces cpu_to_be32(NFSERR_ACCES) |
223 | #define nfserr_exist cpu_to_be32(NFSERR_EXIST) |
224 | #define nfserr_xdev cpu_to_be32(NFSERR_XDEV) |
225 | #define nfserr_nodev cpu_to_be32(NFSERR_NODEV) |
226 | #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR) |
227 | #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR) |
228 | #define nfserr_inval cpu_to_be32(NFSERR_INVAL) |
229 | #define nfserr_fbig cpu_to_be32(NFSERR_FBIG) |
230 | #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC) |
231 | #define nfserr_rofs cpu_to_be32(NFSERR_ROFS) |
232 | #define nfserr_mlink cpu_to_be32(NFSERR_MLINK) |
233 | #define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP) |
234 | #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) |
235 | #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) |
236 | #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) |
237 | #define nfserr_stale cpu_to_be32(NFSERR_STALE) |
238 | #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) |
239 | #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) |
240 | #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) |
241 | #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) |
242 | #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) |
243 | #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) |
244 | #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) |
245 | #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) |
246 | #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) |
247 | #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) |
248 | #define nfserr_denied cpu_to_be32(NFSERR_DENIED) |
249 | #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) |
250 | #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) |
251 | #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) |
252 | #define nfserr_same cpu_to_be32(NFSERR_SAME) |
253 | #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) |
254 | #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) |
255 | #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) |
256 | #define nfserr_moved cpu_to_be32(NFSERR_MOVED) |
257 | #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) |
258 | #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) |
259 | #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) |
260 | #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) |
261 | #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) |
262 | #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) |
263 | #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) |
264 | #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) |
265 | #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) |
266 | #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) |
267 | #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) |
268 | #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) |
269 | #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) |
270 | #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) |
271 | #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) |
272 | #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) |
273 | #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) |
274 | #define nfserr_grace cpu_to_be32(NFSERR_GRACE) |
275 | #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) |
276 | #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) |
277 | #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) |
278 | #define nfserr_admin_revoked cpu_to_be32(NFS4ERR_ADMIN_REVOKED) |
279 | #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) |
280 | #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) |
281 | #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) |
282 | #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) |
283 | #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) |
284 | #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) |
285 | #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) |
286 | #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) |
287 | #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) |
288 | #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) |
289 | #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) |
290 | #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) |
291 | #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) |
292 | #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) |
293 | #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) |
294 | #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) |
295 | #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) |
296 | #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) |
297 | #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) |
298 | #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) |
299 | #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) |
300 | #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) |
301 | #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) |
302 | #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) |
303 | #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) |
304 | #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) |
305 | #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) |
306 | #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) |
307 | #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) |
308 | #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) |
309 | #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) |
310 | #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) |
311 | #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) |
312 | #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) |
313 | #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) |
314 | #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) |
315 | #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) |
316 | #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) |
317 | #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) |
318 | #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) |
319 | #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) |
320 | #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) |
321 | #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) |
322 | #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) |
323 | #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) |
324 | #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) |
325 | #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) |
326 | #define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN) |
327 | #define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG) |
328 | #define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR) |
329 | |
330 | /* error codes for internal use */ |
331 | /* if a request fails due to kmalloc failure, it gets dropped. |
332 | * Client should resend eventually |
333 | */ |
334 | #define nfserr_dropit cpu_to_be32(30000) |
335 | /* end-of-file indicator in readdir */ |
336 | #define nfserr_eof cpu_to_be32(30001) |
337 | /* replay detected */ |
338 | #define nfserr_replay_me cpu_to_be32(11001) |
339 | /* nfs41 replay detected */ |
340 | #define nfserr_replay_cache cpu_to_be32(11002) |
341 | |
342 | /* Check for dir entries '.' and '..' */ |
343 | #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) |
344 | |
345 | #ifdef CONFIG_NFSD_V4 |
346 | |
347 | /* before processing a COMPOUND operation, we have to check that there |
348 | * is enough space in the buffer for XDR encode to succeed. otherwise, |
349 | * we might process an operation with side effects, and be unable to |
350 | * tell the client that the operation succeeded. |
351 | * |
352 | * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space |
353 | * needed to encode an "ordinary" _successful_ operation. (GETATTR, |
354 | * READ, READDIR, and READLINK have their own buffer checks.) if we |
355 | * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. |
356 | * |
357 | * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space |
358 | * needed to encode an operation which has failed with NFS4ERR_RESOURCE. |
359 | * care is taken to ensure that we never fall below this level for any |
360 | * reason. |
361 | */ |
362 | #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ |
363 | #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ |
364 | |
365 | #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ |
366 | #define NFSD_COURTESY_CLIENT_TIMEOUT (24 * 60 * 60) /* seconds */ |
367 | #define NFSD_CLIENT_MAX_TRIM_PER_RUN 128 |
368 | #define NFS4_CLIENTS_PER_GB 1024 |
369 | #define NFSD_DELEGRETURN_TIMEOUT (HZ / 34) /* 30ms */ |
370 | #define NFSD_CB_GETATTR_TIMEOUT NFSD_DELEGRETURN_TIMEOUT |
371 | |
372 | /* |
373 | * The following attributes are currently not supported by the NFSv4 server: |
374 | * ARCHIVE (deprecated anyway) |
375 | * HIDDEN (unlikely to be supported any time soon) |
376 | * MIMETYPE (unlikely to be supported any time soon) |
377 | * QUOTA_* (will be supported in a forthcoming patch) |
378 | * SYSTEM (unlikely to be supported any time soon) |
379 | * TIME_BACKUP (unlikely to be supported any time soon) |
380 | * TIME_CREATE (unlikely to be supported any time soon) |
381 | */ |
382 | #define NFSD4_SUPPORTED_ATTRS_WORD0 \ |
383 | (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ |
384 | | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ |
385 | | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ |
386 | | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ |
387 | | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ |
388 | | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ |
389 | | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ |
390 | | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ |
391 | | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ |
392 | | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) |
393 | |
394 | #define NFSD4_SUPPORTED_ATTRS_WORD1 \ |
395 | (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ |
396 | | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ |
397 | | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ |
398 | | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ |
399 | | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \ |
400 | | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) |
401 | |
402 | #define NFSD4_SUPPORTED_ATTRS_WORD2 0 |
403 | |
404 | /* 4.1 */ |
405 | #ifdef CONFIG_NFSD_PNFS |
406 | #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES |
407 | #define PNFSD_SUPPORTED_ATTRS_WORD2 \ |
408 | (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) |
409 | #else |
410 | #define PNFSD_SUPPORTED_ATTRS_WORD1 0 |
411 | #define PNFSD_SUPPORTED_ATTRS_WORD2 0 |
412 | #endif /* CONFIG_NFSD_PNFS */ |
413 | |
414 | #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ |
415 | NFSD4_SUPPORTED_ATTRS_WORD0 |
416 | |
417 | #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ |
418 | (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) |
419 | |
420 | #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ |
421 | (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ |
422 | FATTR4_WORD2_SUPPATTR_EXCLCREAT) |
423 | |
424 | /* 4.2 */ |
425 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
426 | #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL |
427 | #else |
428 | #define NFSD4_2_SECURITY_ATTRS 0 |
429 | #endif |
430 | |
431 | #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ |
432 | (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ |
433 | FATTR4_WORD2_MODE_UMASK | \ |
434 | NFSD4_2_SECURITY_ATTRS | \ |
435 | FATTR4_WORD2_XATTR_SUPPORT) |
436 | |
437 | extern const u32 nfsd_suppattrs[3][3]; |
438 | |
439 | static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr, |
440 | struct nfs42_netaddr *netaddr) |
441 | { |
442 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; |
443 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; |
444 | unsigned int port; |
445 | size_t ret_addr, ret_port; |
446 | |
447 | switch (addr->sa_family) { |
448 | case AF_INET: |
449 | port = ntohs(sin->sin_port); |
450 | sprintf(buf: netaddr->netid, fmt: "tcp" ); |
451 | netaddr->netid_len = 3; |
452 | break; |
453 | case AF_INET6: |
454 | port = ntohs(sin6->sin6_port); |
455 | sprintf(buf: netaddr->netid, fmt: "tcp6" ); |
456 | netaddr->netid_len = 4; |
457 | break; |
458 | default: |
459 | return nfserr_inval; |
460 | } |
461 | ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr)); |
462 | ret_port = snprintf(buf: netaddr->addr + ret_addr, |
463 | RPCBIND_MAXUADDRLEN + 1 - ret_addr, |
464 | fmt: ".%u.%u" , port >> 8, port & 0xff); |
465 | WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr); |
466 | netaddr->addr_len = ret_addr + ret_port; |
467 | return 0; |
468 | } |
469 | |
470 | static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) |
471 | { |
472 | return !((bm1[0] & ~bm2[0]) || |
473 | (bm1[1] & ~bm2[1]) || |
474 | (bm1[2] & ~bm2[2])); |
475 | } |
476 | |
477 | static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) |
478 | { |
479 | return bmval_is_subset(bm1: bmval, bm2: nfsd_suppattrs[minorversion]); |
480 | } |
481 | |
482 | /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ |
483 | #define NFSD_WRITEONLY_ATTRS_WORD1 \ |
484 | (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) |
485 | |
486 | /* |
487 | * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add |
488 | * a writeable attribute here without also adding code to parse it to |
489 | * nfsd4_decode_fattr(). |
490 | */ |
491 | #define NFSD_WRITEABLE_ATTRS_WORD0 \ |
492 | (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) |
493 | #define NFSD_WRITEABLE_ATTRS_WORD1 \ |
494 | (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ |
495 | | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_CREATE \ |
496 | | FATTR4_WORD1_TIME_MODIFY_SET) |
497 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
498 | #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ |
499 | FATTR4_WORD2_SECURITY_LABEL |
500 | #else |
501 | #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 |
502 | #endif |
503 | #define NFSD_WRITEABLE_ATTRS_WORD2 \ |
504 | (FATTR4_WORD2_MODE_UMASK \ |
505 | | MAYBE_FATTR4_WORD2_SECURITY_LABEL) |
506 | |
507 | #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ |
508 | NFSD_WRITEABLE_ATTRS_WORD0 |
509 | /* |
510 | * we currently store the exclusive create verifier in the v_{a,m}time |
511 | * attributes so the client can't set these at create time using EXCLUSIVE4_1 |
512 | */ |
513 | #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ |
514 | (NFSD_WRITEABLE_ATTRS_WORD1 & \ |
515 | ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) |
516 | #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ |
517 | NFSD_WRITEABLE_ATTRS_WORD2 |
518 | |
519 | extern int nfsd4_is_junction(struct dentry *dentry); |
520 | extern int register_cld_notifier(void); |
521 | extern void unregister_cld_notifier(void); |
522 | #ifdef CONFIG_NFSD_V4_2_INTER_SSC |
523 | extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn); |
524 | #endif |
525 | |
526 | extern void nfsd4_init_leases_net(struct nfsd_net *nn); |
527 | |
528 | #else /* CONFIG_NFSD_V4 */ |
529 | static inline int nfsd4_is_junction(struct dentry *dentry) |
530 | { |
531 | return 0; |
532 | } |
533 | |
534 | static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { }; |
535 | |
536 | #define register_cld_notifier() 0 |
537 | #define unregister_cld_notifier() do { } while(0) |
538 | |
539 | #endif /* CONFIG_NFSD_V4 */ |
540 | |
541 | #endif /* LINUX_NFSD_NFSD_H */ |
542 | |