Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 | 2 | /* |
1da177e4 LT |
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 | ||
1da177e4 | 12 | #include <linux/types.h> |
1da177e4 LT |
13 | #include <linux/mount.h> |
14 | ||
c10bd39d BF |
15 | #include <linux/nfs.h> |
16 | #include <linux/nfs2.h> | |
17 | #include <linux/nfs3.h> | |
18 | #include <linux/nfs4.h> | |
9c69de4c | 19 | #include <linux/sunrpc/svc.h> |
e45d1a18 | 20 | #include <linux/sunrpc/svc_xprt.h> |
c10bd39d | 21 | #include <linux/sunrpc/msg_prot.h> |
af76fc6c | 22 | #include <linux/sunrpc/addr.h> |
c10bd39d | 23 | |
6f226e2a | 24 | #include <uapi/linux/nfsd/debug.h> |
c10bd39d | 25 | |
e8a79fb1 | 26 | #include "netns.h" |
d430e8d5 | 27 | #include "export.h" |
20ad856e | 28 | #include "stats.h" |
d430e8d5 | 29 | |
6f226e2a | 30 | #undef ifdebug |
135dd002 | 31 | #ifdef CONFIG_SUNRPC_DEBUG |
6f226e2a CH |
32 | # define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag) |
33 | #else | |
34 | # define ifdebug(flag) if (0) | |
35 | #endif | |
36 | ||
1da177e4 LT |
37 | /* |
38 | * nfsd version | |
39 | */ | |
4bdc33ed | 40 | #define NFSD_SUPPORTED_MINOR_VERSION 2 |
c10bd39d BF |
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) | |
1da177e4 | 60 | |
1da177e4 | 61 | struct readdir_cd { |
131a21c2 | 62 | __be32 err; /* 0, nfserr, or nfserr_eof */ |
1da177e4 | 63 | }; |
0a3adade | 64 | |
1da177e4 LT |
65 | |
66 | extern struct svc_program nfsd_program; | |
2f3a4b2a | 67 | extern const struct svc_version nfsd_version2, nfsd_version3, nfsd_version4; |
bedbdd8b | 68 | extern struct mutex nfsd_mutex; |
4bd9b0f4 | 69 | extern spinlock_t nfsd_drc_lock; |
697ce9be ZY |
70 | extern unsigned long nfsd_drc_max_mem; |
71 | extern unsigned long nfsd_drc_mem_used; | |
a254b246 | 72 | |
88e9d34c | 73 | extern const struct seq_operations nfs_exports_op; |
a254b246 | 74 | |
788f7183 CL |
75 | /* |
76 | * Common void argument and result helpers | |
77 | */ | |
78 | struct nfsd_voidargs { }; | |
79 | struct nfsd_voidres { }; | |
c44b31c2 | 80 | bool nfssvc_decode_voidarg(struct svc_rqst *rqstp, |
16c66364 | 81 | struct xdr_stream *xdr); |
130e2054 | 82 | bool nfssvc_encode_voidres(struct svc_rqst *rqstp, |
fda49441 | 83 | struct xdr_stream *xdr); |
788f7183 | 84 | |
1da177e4 LT |
85 | /* |
86 | * Function prototypes. | |
87 | */ | |
4df493a2 | 88 | int nfsd_svc(int nrservs, struct net *net, const struct cred *cred); |
c7afef1f | 89 | int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp); |
1da177e4 | 90 | |
9dd9845f SK |
91 | int nfsd_nrthreads(struct net *); |
92 | int nfsd_nrpools(struct net *); | |
93 | int nfsd_get_nrthreads(int n, int *, struct net *); | |
3938a0d5 | 94 | int nfsd_set_nrthreads(int n, int *, struct net *); |
7f2e7dc0 BF |
95 | int nfsd_pool_stats_open(struct inode *, struct file *); |
96 | int nfsd_pool_stats_release(struct inode *, struct file *); | |
c6c7f2a8 | 97 | void nfsd_shutdown_threads(struct net *net); |
a254b246 | 98 | |
8c62d127 | 99 | void nfsd_put(struct net *net); |
19f7e2ca | 100 | |
28df3d15 BF |
101 | bool i_am_nfsd(void); |
102 | ||
e8a79fb1 BF |
103 | struct nfsdfs_client { |
104 | struct kref cl_ref; | |
105 | void (*cl_release)(struct kref *kref); | |
106 | }; | |
107 | ||
97ad4031 BF |
108 | struct nfsdfs_client *get_nfsdfs_client(struct inode *); |
109 | struct dentry *nfsd_client_mkdir(struct nfsd_net *nn, | |
472d155a N |
110 | struct nfsdfs_client *ncl, u32 id, |
111 | const struct tree_descr *, | |
112 | struct dentry **fdentries); | |
e8a79fb1 BF |
113 | void nfsd_client_rmdir(struct dentry *dentry); |
114 | ||
681370f4 | 115 | |
a257cdd0 AG |
116 | #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) |
117 | #ifdef CONFIG_NFSD_V2_ACL | |
e9679189 | 118 | extern const struct svc_version nfsd_acl_version2; |
a257cdd0 AG |
119 | #else |
120 | #define nfsd_acl_version2 NULL | |
121 | #endif | |
122 | #ifdef CONFIG_NFSD_V3_ACL | |
e9679189 | 123 | extern const struct svc_version nfsd_acl_version3; |
a257cdd0 AG |
124 | #else |
125 | #define nfsd_acl_version3 NULL | |
126 | #endif | |
a257cdd0 AG |
127 | #endif |
128 | ||
e333f3bb TM |
129 | struct nfsd_net; |
130 | ||
6658d3a7 | 131 | enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL }; |
e333f3bb TM |
132 | int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change); |
133 | int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change); | |
134 | void nfsd_reset_versions(struct nfsd_net *nn); | |
6777436b | 135 | int nfsd_create_serv(struct net *net); |
6658d3a7 | 136 | |
596bbe53 | 137 | extern int nfsd_max_blksize; |
1da177e4 | 138 | |
03a816b4 SD |
139 | static inline int nfsd_v4client(struct svc_rqst *rq) |
140 | { | |
141 | return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4; | |
142 | } | |
e45d1a18 TM |
143 | static inline struct user_namespace * |
144 | nfsd_user_namespace(const struct svc_rqst *rqstp) | |
145 | { | |
146 | const struct cred *cred = rqstp->rq_xprt->xpt_cred; | |
147 | return cred ? cred->user_ns : &init_user_ns; | |
148 | } | |
03a816b4 | 149 | |
1da177e4 LT |
150 | /* |
151 | * NFSv4 State | |
152 | */ | |
153 | #ifdef CONFIG_NFSD_V4 | |
697ce9be | 154 | extern unsigned long max_delegations; |
72083396 | 155 | int nfsd4_init_slabs(void); |
e8ff2a84 | 156 | void nfsd4_free_slabs(void); |
29ab23cc | 157 | int nfs4_state_start(void); |
f252bc68 | 158 | int nfs4_state_start_net(struct net *net); |
1da177e4 | 159 | void nfs4_state_shutdown(void); |
f252bc68 | 160 | void nfs4_state_shutdown_net(struct net *net); |
0964a3d3 | 161 | int nfs4_reset_recoverydir(char *recdir); |
87f26f9b | 162 | char * nfs4_recoverydir(void); |
ed941643 | 163 | bool nfsd4_spo_must_allow(struct svc_rqst *rqstp); |
d76cc46b DN |
164 | int nfsd4_create_laundry_wq(void); |
165 | void nfsd4_destroy_laundry_wq(void); | |
c035362e | 166 | bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, struct inode *inode); |
1da177e4 | 167 | #else |
72083396 | 168 | static inline int nfsd4_init_slabs(void) { return 0; } |
e8ff2a84 | 169 | static inline void nfsd4_free_slabs(void) { } |
c0826574 | 170 | static inline int nfs4_state_start(void) { return 0; } |
f252bc68 | 171 | static inline int nfs4_state_start_net(struct net *net) { return 0; } |
e8ff2a84 | 172 | static inline void nfs4_state_shutdown(void) { } |
f252bc68 | 173 | static inline void nfs4_state_shutdown_net(struct net *net) { } |
e8ff2a84 | 174 | static inline int nfs4_reset_recoverydir(char *recdir) { return 0; } |
87f26f9b | 175 | static inline char * nfs4_recoverydir(void) {return NULL; } |
ed941643 AE |
176 | static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) |
177 | { | |
178 | return false; | |
179 | } | |
d76cc46b DN |
180 | static inline int nfsd4_create_laundry_wq(void) { return 0; }; |
181 | static inline void nfsd4_destroy_laundry_wq(void) {}; | |
c035362e CL |
182 | static inline bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, |
183 | struct inode *inode) | |
184 | { | |
185 | return false; | |
186 | } | |
1da177e4 LT |
187 | #endif |
188 | ||
189 | /* | |
190 | * lockd binding | |
191 | */ | |
192 | void nfsd_lockd_init(void); | |
193 | void nfsd_lockd_shutdown(void); | |
194 | ||
195 | ||
196 | /* | |
197 | * These macros provide pre-xdr'ed values for faster operation. | |
198 | */ | |
77f18f5e HH |
199 | #define nfs_ok cpu_to_be32(NFS_OK) |
200 | #define nfserr_perm cpu_to_be32(NFSERR_PERM) | |
201 | #define nfserr_noent cpu_to_be32(NFSERR_NOENT) | |
202 | #define nfserr_io cpu_to_be32(NFSERR_IO) | |
203 | #define nfserr_nxio cpu_to_be32(NFSERR_NXIO) | |
204 | #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN) | |
205 | #define nfserr_acces cpu_to_be32(NFSERR_ACCES) | |
206 | #define nfserr_exist cpu_to_be32(NFSERR_EXIST) | |
207 | #define nfserr_xdev cpu_to_be32(NFSERR_XDEV) | |
208 | #define nfserr_nodev cpu_to_be32(NFSERR_NODEV) | |
209 | #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR) | |
210 | #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR) | |
211 | #define nfserr_inval cpu_to_be32(NFSERR_INVAL) | |
212 | #define nfserr_fbig cpu_to_be32(NFSERR_FBIG) | |
213 | #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC) | |
214 | #define nfserr_rofs cpu_to_be32(NFSERR_ROFS) | |
215 | #define nfserr_mlink cpu_to_be32(NFSERR_MLINK) | |
216 | #define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP) | |
217 | #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) | |
218 | #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) | |
219 | #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) | |
220 | #define nfserr_stale cpu_to_be32(NFSERR_STALE) | |
221 | #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) | |
222 | #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) | |
223 | #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) | |
224 | #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) | |
225 | #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) | |
226 | #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) | |
227 | #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) | |
228 | #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) | |
229 | #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) | |
230 | #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) | |
231 | #define nfserr_denied cpu_to_be32(NFSERR_DENIED) | |
232 | #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) | |
233 | #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) | |
234 | #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) | |
235 | #define nfserr_same cpu_to_be32(NFSERR_SAME) | |
236 | #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) | |
237 | #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) | |
238 | #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) | |
239 | #define nfserr_moved cpu_to_be32(NFSERR_MOVED) | |
240 | #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) | |
241 | #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) | |
242 | #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) | |
243 | #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) | |
244 | #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) | |
245 | #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) | |
246 | #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) | |
247 | #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) | |
248 | #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) | |
f9d7562f | 249 | #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) |
77f18f5e HH |
250 | #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) |
251 | #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) | |
252 | #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) | |
253 | #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) | |
f6af99ec | 254 | #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) |
77f18f5e HH |
255 | #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) |
256 | #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) | |
257 | #define nfserr_grace cpu_to_be32(NFSERR_GRACE) | |
258 | #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) | |
259 | #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) | |
260 | #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) | |
261 | #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) | |
262 | #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) | |
263 | #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) | |
10add806 ME |
264 | #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) |
265 | #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) | |
266 | #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) | |
267 | #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) | |
268 | #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) | |
269 | #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) | |
270 | #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) | |
271 | #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) | |
272 | #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) | |
273 | #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) | |
274 | #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) | |
275 | #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) | |
276 | #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) | |
277 | #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) | |
278 | #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) | |
279 | #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) | |
280 | #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) | |
281 | #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) | |
282 | #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) | |
283 | #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) | |
284 | #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) | |
285 | #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) | |
286 | #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) | |
287 | #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) | |
288 | #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) | |
289 | #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) | |
290 | #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) | |
291 | #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) | |
292 | #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) | |
293 | #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) | |
294 | #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) | |
295 | #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) | |
296 | #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) | |
297 | #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) | |
298 | #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) | |
299 | #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) | |
300 | #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) | |
301 | #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) | |
4488cc96 SD |
302 | #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) |
303 | #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) | |
2b8941b9 | 304 | #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) |
4488cc96 SD |
305 | #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) |
306 | #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) | |
466e16f0 N |
307 | #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) |
308 | #define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN) | |
4dd05fce FL |
309 | #define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG) |
310 | #define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR) | |
1da177e4 LT |
311 | |
312 | /* error codes for internal use */ | |
313 | /* if a request fails due to kmalloc failure, it gets dropped. | |
314 | * Client should resend eventually | |
315 | */ | |
77f18f5e | 316 | #define nfserr_dropit cpu_to_be32(30000) |
1da177e4 | 317 | /* end-of-file indicator in readdir */ |
77f18f5e | 318 | #define nfserr_eof cpu_to_be32(30001) |
10add806 ME |
319 | /* replay detected */ |
320 | #define nfserr_replay_me cpu_to_be32(11001) | |
321 | /* nfs41 replay detected */ | |
322 | #define nfserr_replay_cache cpu_to_be32(11002) | |
1da177e4 LT |
323 | |
324 | /* Check for dir entries '.' and '..' */ | |
325 | #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) | |
326 | ||
1da177e4 LT |
327 | #ifdef CONFIG_NFSD_V4 |
328 | ||
329 | /* before processing a COMPOUND operation, we have to check that there | |
330 | * is enough space in the buffer for XDR encode to succeed. otherwise, | |
331 | * we might process an operation with side effects, and be unable to | |
332 | * tell the client that the operation succeeded. | |
333 | * | |
e5710199 | 334 | * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space |
1da177e4 LT |
335 | * needed to encode an "ordinary" _successful_ operation. (GETATTR, |
336 | * READ, READDIR, and READLINK have their own buffer checks.) if we | |
337 | * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. | |
338 | * | |
e5710199 | 339 | * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space |
1da177e4 LT |
340 | * needed to encode an operation which has failed with NFS4ERR_RESOURCE. |
341 | * care is taken to ensure that we never fall below this level for any | |
342 | * reason. | |
343 | */ | |
344 | #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ | |
04819bf6 | 345 | #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ |
1da177e4 | 346 | |
ecec6e34 | 347 | #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ |
66af2579 | 348 | #define NFSD_COURTESY_CLIENT_TIMEOUT (24 * 60 * 60) /* seconds */ |
4271c2c0 DN |
349 | #define NFSD_CLIENT_MAX_TRIM_PER_RUN 128 |
350 | #define NFS4_CLIENTS_PER_GB 1024 | |
c035362e | 351 | #define NFSD_DELEGRETURN_TIMEOUT (HZ / 34) /* 30ms */ |
1da177e4 LT |
352 | |
353 | /* | |
354 | * The following attributes are currently not supported by the NFSv4 server: | |
355 | * ARCHIVE (deprecated anyway) | |
1da177e4 LT |
356 | * HIDDEN (unlikely to be supported any time soon) |
357 | * MIMETYPE (unlikely to be supported any time soon) | |
358 | * QUOTA_* (will be supported in a forthcoming patch) | |
359 | * SYSTEM (unlikely to be supported any time soon) | |
360 | * TIME_BACKUP (unlikely to be supported any time soon) | |
361 | * TIME_CREATE (unlikely to be supported any time soon) | |
362 | */ | |
7e705706 | 363 | #define NFSD4_SUPPORTED_ATTRS_WORD0 \ |
1da177e4 LT |
364 | (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ |
365 | | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ | |
366 | | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ | |
367 | | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ | |
368 | | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ | |
369 | | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ | |
370 | | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ | |
81c3f413 | 371 | | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ |
1da177e4 LT |
372 | | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ |
373 | | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) | |
374 | ||
7e705706 | 375 | #define NFSD4_SUPPORTED_ATTRS_WORD1 \ |
1da177e4 LT |
376 | (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ |
377 | | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ | |
378 | | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ | |
379 | | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ | |
e377a3e6 | 380 | | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \ |
1da177e4 LT |
381 | | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) |
382 | ||
7e705706 AA |
383 | #define NFSD4_SUPPORTED_ATTRS_WORD2 0 |
384 | ||
9cf514cc CH |
385 | /* 4.1 */ |
386 | #ifdef CONFIG_NFSD_PNFS | |
387 | #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES | |
388 | #define PNFSD_SUPPORTED_ATTRS_WORD2 \ | |
389 | (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) | |
390 | #else | |
391 | #define PNFSD_SUPPORTED_ATTRS_WORD1 0 | |
392 | #define PNFSD_SUPPORTED_ATTRS_WORD2 0 | |
393 | #endif /* CONFIG_NFSD_PNFS */ | |
394 | ||
7e705706 AA |
395 | #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ |
396 | NFSD4_SUPPORTED_ATTRS_WORD0 | |
397 | ||
398 | #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ | |
9cf514cc | 399 | (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) |
7e705706 AA |
400 | |
401 | #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ | |
9cf514cc CH |
402 | (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ |
403 | FATTR4_WORD2_SUPPATTR_EXCLCREAT) | |
7e705706 | 404 | |
9cf514cc | 405 | /* 4.2 */ |
18032ca0 | 406 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
6d0ba043 | 407 | #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL |
18032ca0 | 408 | #else |
6d0ba043 | 409 | #define NFSD4_2_SECURITY_ATTRS 0 |
18032ca0 DQ |
410 | #endif |
411 | ||
6d0ba043 CH |
412 | #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ |
413 | (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ | |
47057abd | 414 | FATTR4_WORD2_MODE_UMASK | \ |
4dd05fce FL |
415 | NFSD4_2_SECURITY_ATTRS | \ |
416 | FATTR4_WORD2_XATTR_SUPPORT) | |
6d0ba043 | 417 | |
5cf23dbb | 418 | extern const u32 nfsd_suppattrs[3][3]; |
7e705706 | 419 | |
10db6512 | 420 | static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr, |
af76fc6c OK |
421 | struct nfs42_netaddr *netaddr) |
422 | { | |
423 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
424 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
425 | unsigned int port; | |
426 | size_t ret_addr, ret_port; | |
427 | ||
428 | switch (addr->sa_family) { | |
429 | case AF_INET: | |
430 | port = ntohs(sin->sin_port); | |
431 | sprintf(netaddr->netid, "tcp"); | |
432 | netaddr->netid_len = 3; | |
433 | break; | |
434 | case AF_INET6: | |
435 | port = ntohs(sin6->sin6_port); | |
436 | sprintf(netaddr->netid, "tcp6"); | |
437 | netaddr->netid_len = 4; | |
438 | break; | |
439 | default: | |
440 | return nfserr_inval; | |
441 | } | |
442 | ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr)); | |
443 | ret_port = snprintf(netaddr->addr + ret_addr, | |
444 | RPCBIND_MAXUADDRLEN + 1 - ret_addr, | |
445 | ".%u.%u", port >> 8, port & 0xff); | |
446 | WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr); | |
447 | netaddr->addr_len = ret_addr + ret_port; | |
448 | return 0; | |
449 | } | |
450 | ||
5cf23dbb | 451 | static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) |
7e705706 | 452 | { |
916d2d84 BF |
453 | return !((bm1[0] & ~bm2[0]) || |
454 | (bm1[1] & ~bm2[1]) || | |
455 | (bm1[2] & ~bm2[2])); | |
7e705706 AA |
456 | } |
457 | ||
5cf23dbb | 458 | static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) |
7e705706 | 459 | { |
916d2d84 | 460 | return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]); |
7e705706 AA |
461 | } |
462 | ||
1da177e4 | 463 | /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ |
c7e8472c BS |
464 | #define NFSD_WRITEONLY_ATTRS_WORD1 \ |
465 | (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) | |
1da177e4 | 466 | |
e864c189 BF |
467 | /* |
468 | * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add | |
469 | * a writeable attribute here without also adding code to parse it to | |
470 | * nfsd4_decode_fattr(). | |
471 | */ | |
c7e8472c BS |
472 | #define NFSD_WRITEABLE_ATTRS_WORD0 \ |
473 | (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) | |
474 | #define NFSD_WRITEABLE_ATTRS_WORD1 \ | |
475 | (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ | |
5b2f3e07 CL |
476 | | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_CREATE \ |
477 | | FATTR4_WORD1_TIME_MODIFY_SET) | |
18032ca0 | 478 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
47057abd AG |
479 | #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ |
480 | FATTR4_WORD2_SECURITY_LABEL | |
18032ca0 | 481 | #else |
47057abd | 482 | #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 |
18032ca0 | 483 | #endif |
47057abd AG |
484 | #define NFSD_WRITEABLE_ATTRS_WORD2 \ |
485 | (FATTR4_WORD2_MODE_UMASK \ | |
486 | | MAYBE_FATTR4_WORD2_SECURITY_LABEL) | |
1da177e4 | 487 | |
8c18f205 BH |
488 | #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ |
489 | NFSD_WRITEABLE_ATTRS_WORD0 | |
490 | /* | |
491 | * we currently store the exclusive create verifier in the v_{a,m}time | |
492 | * attributes so the client can't set these at create time using EXCLUSIVE4_1 | |
493 | */ | |
494 | #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ | |
495 | (NFSD_WRITEABLE_ATTRS_WORD1 & \ | |
496 | ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) | |
497 | #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ | |
498 | NFSD_WRITEABLE_ATTRS_WORD2 | |
499 | ||
11fcee02 | 500 | extern int nfsd4_is_junction(struct dentry *dentry); |
797a9d79 JL |
501 | extern int register_cld_notifier(void); |
502 | extern void unregister_cld_notifier(void); | |
f4e44b39 DN |
503 | #ifdef CONFIG_NFSD_V4_2_INTER_SSC |
504 | extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn); | |
505 | #endif | |
506 | ||
f385f7d2 | 507 | extern void nfsd4_init_leases_net(struct nfsd_net *nn); |
6867137e | 508 | |
797a9d79 | 509 | #else /* CONFIG_NFSD_V4 */ |
11fcee02 TM |
510 | static inline int nfsd4_is_junction(struct dentry *dentry) |
511 | { | |
512 | return 0; | |
513 | } | |
514 | ||
f385f7d2 | 515 | static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { }; |
6867137e | 516 | |
797a9d79 JL |
517 | #define register_cld_notifier() 0 |
518 | #define unregister_cld_notifier() do { } while(0) | |
519 | ||
1da177e4 LT |
520 | #endif /* CONFIG_NFSD_V4 */ |
521 | ||
1da177e4 | 522 | #endif /* LINUX_NFSD_NFSD_H */ |