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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" |
7f94423e | 27 | #include "stats.h" |
d430e8d5 CH |
28 | #include "export.h" |
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; | |
e9679189 | 67 | extern const struct svc_version nfsd_version2, nfsd_version3, |
1da177e4 | 68 | nfsd_version4; |
bedbdd8b | 69 | extern struct mutex nfsd_mutex; |
4bd9b0f4 | 70 | extern spinlock_t nfsd_drc_lock; |
697ce9be ZY |
71 | extern unsigned long nfsd_drc_max_mem; |
72 | extern unsigned long nfsd_drc_mem_used; | |
a254b246 | 73 | |
88e9d34c | 74 | extern const struct seq_operations nfs_exports_op; |
a254b246 | 75 | |
788f7183 CL |
76 | /* |
77 | * Common void argument and result helpers | |
78 | */ | |
79 | struct nfsd_voidargs { }; | |
80 | struct nfsd_voidres { }; | |
81 | int nfssvc_decode_voidarg(struct svc_rqst *rqstp, __be32 *p); | |
82 | int nfssvc_encode_voidres(struct svc_rqst *rqstp, __be32 *p); | |
83 | ||
1da177e4 LT |
84 | /* |
85 | * Function prototypes. | |
86 | */ | |
4df493a2 | 87 | int nfsd_svc(int nrservs, struct net *net, const struct cred *cred); |
c7afef1f | 88 | int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp); |
1da177e4 | 89 | |
9dd9845f SK |
90 | int nfsd_nrthreads(struct net *); |
91 | int nfsd_nrpools(struct net *); | |
92 | int nfsd_get_nrthreads(int n, int *, struct net *); | |
3938a0d5 | 93 | int nfsd_set_nrthreads(int n, int *, struct net *); |
7f2e7dc0 BF |
94 | int nfsd_pool_stats_open(struct inode *, struct file *); |
95 | int nfsd_pool_stats_release(struct inode *, struct file *); | |
a254b246 | 96 | |
9dd9845f | 97 | void nfsd_destroy(struct net *net); |
19f7e2ca | 98 | |
28df3d15 BF |
99 | bool i_am_nfsd(void); |
100 | ||
681370f4 BF |
101 | int get_nfsdfs(struct net *); |
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, | |
110 | struct nfsdfs_client *ncl, u32 id, const struct tree_descr *); | |
e8a79fb1 BF |
111 | void nfsd_client_rmdir(struct dentry *dentry); |
112 | ||
681370f4 | 113 | |
a257cdd0 AG |
114 | #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) |
115 | #ifdef CONFIG_NFSD_V2_ACL | |
e9679189 | 116 | extern const struct svc_version nfsd_acl_version2; |
a257cdd0 AG |
117 | #else |
118 | #define nfsd_acl_version2 NULL | |
119 | #endif | |
120 | #ifdef CONFIG_NFSD_V3_ACL | |
e9679189 | 121 | extern const struct svc_version nfsd_acl_version3; |
a257cdd0 AG |
122 | #else |
123 | #define nfsd_acl_version3 NULL | |
124 | #endif | |
a257cdd0 AG |
125 | #endif |
126 | ||
e333f3bb TM |
127 | struct nfsd_net; |
128 | ||
6658d3a7 | 129 | enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL }; |
e333f3bb TM |
130 | int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change); |
131 | int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change); | |
132 | void nfsd_reset_versions(struct nfsd_net *nn); | |
6777436b | 133 | int nfsd_create_serv(struct net *net); |
6658d3a7 | 134 | |
596bbe53 | 135 | extern int nfsd_max_blksize; |
1da177e4 | 136 | |
03a816b4 SD |
137 | static inline int nfsd_v4client(struct svc_rqst *rq) |
138 | { | |
139 | return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4; | |
140 | } | |
e45d1a18 TM |
141 | static inline struct user_namespace * |
142 | nfsd_user_namespace(const struct svc_rqst *rqstp) | |
143 | { | |
144 | const struct cred *cred = rqstp->rq_xprt->xpt_cred; | |
145 | return cred ? cred->user_ns : &init_user_ns; | |
146 | } | |
03a816b4 | 147 | |
1da177e4 LT |
148 | /* |
149 | * NFSv4 State | |
150 | */ | |
151 | #ifdef CONFIG_NFSD_V4 | |
697ce9be | 152 | extern unsigned long max_delegations; |
72083396 | 153 | int nfsd4_init_slabs(void); |
e8ff2a84 | 154 | void nfsd4_free_slabs(void); |
29ab23cc | 155 | int nfs4_state_start(void); |
f252bc68 | 156 | int nfs4_state_start_net(struct net *net); |
1da177e4 | 157 | void nfs4_state_shutdown(void); |
f252bc68 | 158 | void nfs4_state_shutdown_net(struct net *net); |
0964a3d3 | 159 | int nfs4_reset_recoverydir(char *recdir); |
87f26f9b | 160 | char * nfs4_recoverydir(void); |
ed941643 | 161 | bool nfsd4_spo_must_allow(struct svc_rqst *rqstp); |
1da177e4 | 162 | #else |
72083396 | 163 | static inline int nfsd4_init_slabs(void) { return 0; } |
e8ff2a84 | 164 | static inline void nfsd4_free_slabs(void) { } |
c0826574 | 165 | static inline int nfs4_state_start(void) { return 0; } |
f252bc68 | 166 | static inline int nfs4_state_start_net(struct net *net) { return 0; } |
e8ff2a84 | 167 | static inline void nfs4_state_shutdown(void) { } |
f252bc68 | 168 | static inline void nfs4_state_shutdown_net(struct net *net) { } |
e8ff2a84 | 169 | static inline int nfs4_reset_recoverydir(char *recdir) { return 0; } |
87f26f9b | 170 | static inline char * nfs4_recoverydir(void) {return NULL; } |
ed941643 AE |
171 | static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) |
172 | { | |
173 | return false; | |
174 | } | |
1da177e4 LT |
175 | #endif |
176 | ||
177 | /* | |
178 | * lockd binding | |
179 | */ | |
180 | void nfsd_lockd_init(void); | |
181 | void nfsd_lockd_shutdown(void); | |
182 | ||
183 | ||
184 | /* | |
185 | * These macros provide pre-xdr'ed values for faster operation. | |
186 | */ | |
77f18f5e HH |
187 | #define nfs_ok cpu_to_be32(NFS_OK) |
188 | #define nfserr_perm cpu_to_be32(NFSERR_PERM) | |
189 | #define nfserr_noent cpu_to_be32(NFSERR_NOENT) | |
190 | #define nfserr_io cpu_to_be32(NFSERR_IO) | |
191 | #define nfserr_nxio cpu_to_be32(NFSERR_NXIO) | |
192 | #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN) | |
193 | #define nfserr_acces cpu_to_be32(NFSERR_ACCES) | |
194 | #define nfserr_exist cpu_to_be32(NFSERR_EXIST) | |
195 | #define nfserr_xdev cpu_to_be32(NFSERR_XDEV) | |
196 | #define nfserr_nodev cpu_to_be32(NFSERR_NODEV) | |
197 | #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR) | |
198 | #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR) | |
199 | #define nfserr_inval cpu_to_be32(NFSERR_INVAL) | |
200 | #define nfserr_fbig cpu_to_be32(NFSERR_FBIG) | |
201 | #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC) | |
202 | #define nfserr_rofs cpu_to_be32(NFSERR_ROFS) | |
203 | #define nfserr_mlink cpu_to_be32(NFSERR_MLINK) | |
204 | #define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP) | |
205 | #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) | |
206 | #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) | |
207 | #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) | |
208 | #define nfserr_stale cpu_to_be32(NFSERR_STALE) | |
209 | #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) | |
210 | #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) | |
211 | #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) | |
212 | #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) | |
213 | #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) | |
214 | #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) | |
215 | #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) | |
216 | #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) | |
217 | #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) | |
218 | #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) | |
219 | #define nfserr_denied cpu_to_be32(NFSERR_DENIED) | |
220 | #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) | |
221 | #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) | |
222 | #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) | |
223 | #define nfserr_same cpu_to_be32(NFSERR_SAME) | |
224 | #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) | |
225 | #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) | |
226 | #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) | |
227 | #define nfserr_moved cpu_to_be32(NFSERR_MOVED) | |
228 | #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) | |
229 | #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) | |
230 | #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) | |
231 | #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) | |
232 | #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) | |
233 | #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) | |
234 | #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) | |
235 | #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) | |
236 | #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) | |
f9d7562f | 237 | #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) |
77f18f5e HH |
238 | #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) |
239 | #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) | |
240 | #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) | |
241 | #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) | |
f6af99ec | 242 | #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) |
77f18f5e HH |
243 | #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) |
244 | #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) | |
245 | #define nfserr_grace cpu_to_be32(NFSERR_GRACE) | |
246 | #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) | |
247 | #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) | |
248 | #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) | |
249 | #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) | |
250 | #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) | |
251 | #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) | |
10add806 ME |
252 | #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) |
253 | #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) | |
254 | #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) | |
255 | #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) | |
256 | #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) | |
257 | #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) | |
258 | #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) | |
259 | #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) | |
260 | #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) | |
261 | #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) | |
262 | #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) | |
263 | #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) | |
264 | #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) | |
265 | #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) | |
266 | #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) | |
267 | #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) | |
268 | #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) | |
269 | #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) | |
270 | #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) | |
271 | #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) | |
272 | #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) | |
273 | #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) | |
274 | #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) | |
275 | #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) | |
276 | #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) | |
277 | #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) | |
278 | #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) | |
279 | #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) | |
280 | #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) | |
281 | #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) | |
282 | #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) | |
283 | #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) | |
284 | #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) | |
285 | #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) | |
286 | #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) | |
287 | #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) | |
288 | #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) | |
289 | #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) | |
4488cc96 SD |
290 | #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) |
291 | #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) | |
2b8941b9 | 292 | #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) |
4488cc96 SD |
293 | #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) |
294 | #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) | |
466e16f0 N |
295 | #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) |
296 | #define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN) | |
4dd05fce FL |
297 | #define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG) |
298 | #define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR) | |
1da177e4 LT |
299 | |
300 | /* error codes for internal use */ | |
301 | /* if a request fails due to kmalloc failure, it gets dropped. | |
302 | * Client should resend eventually | |
303 | */ | |
77f18f5e | 304 | #define nfserr_dropit cpu_to_be32(30000) |
1da177e4 | 305 | /* end-of-file indicator in readdir */ |
77f18f5e | 306 | #define nfserr_eof cpu_to_be32(30001) |
10add806 ME |
307 | /* replay detected */ |
308 | #define nfserr_replay_me cpu_to_be32(11001) | |
309 | /* nfs41 replay detected */ | |
310 | #define nfserr_replay_cache cpu_to_be32(11002) | |
1da177e4 LT |
311 | |
312 | /* Check for dir entries '.' and '..' */ | |
313 | #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) | |
314 | ||
1da177e4 LT |
315 | #ifdef CONFIG_NFSD_V4 |
316 | ||
317 | /* before processing a COMPOUND operation, we have to check that there | |
318 | * is enough space in the buffer for XDR encode to succeed. otherwise, | |
319 | * we might process an operation with side effects, and be unable to | |
320 | * tell the client that the operation succeeded. | |
321 | * | |
e5710199 | 322 | * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space |
1da177e4 LT |
323 | * needed to encode an "ordinary" _successful_ operation. (GETATTR, |
324 | * READ, READDIR, and READLINK have their own buffer checks.) if we | |
325 | * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. | |
326 | * | |
e5710199 | 327 | * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space |
1da177e4 LT |
328 | * needed to encode an operation which has failed with NFS4ERR_RESOURCE. |
329 | * care is taken to ensure that we never fall below this level for any | |
330 | * reason. | |
331 | */ | |
332 | #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ | |
04819bf6 | 333 | #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ |
1da177e4 | 334 | |
ecec6e34 | 335 | #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ |
1da177e4 LT |
336 | |
337 | /* | |
338 | * The following attributes are currently not supported by the NFSv4 server: | |
339 | * ARCHIVE (deprecated anyway) | |
1da177e4 LT |
340 | * HIDDEN (unlikely to be supported any time soon) |
341 | * MIMETYPE (unlikely to be supported any time soon) | |
342 | * QUOTA_* (will be supported in a forthcoming patch) | |
343 | * SYSTEM (unlikely to be supported any time soon) | |
344 | * TIME_BACKUP (unlikely to be supported any time soon) | |
345 | * TIME_CREATE (unlikely to be supported any time soon) | |
346 | */ | |
7e705706 | 347 | #define NFSD4_SUPPORTED_ATTRS_WORD0 \ |
1da177e4 LT |
348 | (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ |
349 | | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ | |
350 | | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ | |
351 | | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ | |
352 | | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ | |
353 | | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ | |
354 | | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ | |
81c3f413 | 355 | | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ |
1da177e4 LT |
356 | | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ |
357 | | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) | |
358 | ||
7e705706 | 359 | #define NFSD4_SUPPORTED_ATTRS_WORD1 \ |
1da177e4 LT |
360 | (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ |
361 | | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ | |
362 | | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ | |
363 | | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ | |
364 | | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \ | |
365 | | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) | |
366 | ||
7e705706 AA |
367 | #define NFSD4_SUPPORTED_ATTRS_WORD2 0 |
368 | ||
9cf514cc CH |
369 | /* 4.1 */ |
370 | #ifdef CONFIG_NFSD_PNFS | |
371 | #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES | |
372 | #define PNFSD_SUPPORTED_ATTRS_WORD2 \ | |
373 | (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) | |
374 | #else | |
375 | #define PNFSD_SUPPORTED_ATTRS_WORD1 0 | |
376 | #define PNFSD_SUPPORTED_ATTRS_WORD2 0 | |
377 | #endif /* CONFIG_NFSD_PNFS */ | |
378 | ||
7e705706 AA |
379 | #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ |
380 | NFSD4_SUPPORTED_ATTRS_WORD0 | |
381 | ||
382 | #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ | |
9cf514cc | 383 | (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) |
7e705706 AA |
384 | |
385 | #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ | |
9cf514cc CH |
386 | (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ |
387 | FATTR4_WORD2_SUPPATTR_EXCLCREAT) | |
7e705706 | 388 | |
9cf514cc | 389 | /* 4.2 */ |
18032ca0 | 390 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
6d0ba043 | 391 | #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL |
18032ca0 | 392 | #else |
6d0ba043 | 393 | #define NFSD4_2_SECURITY_ATTRS 0 |
18032ca0 DQ |
394 | #endif |
395 | ||
6d0ba043 CH |
396 | #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ |
397 | (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ | |
47057abd | 398 | FATTR4_WORD2_MODE_UMASK | \ |
4dd05fce FL |
399 | NFSD4_2_SECURITY_ATTRS | \ |
400 | FATTR4_WORD2_XATTR_SUPPORT) | |
6d0ba043 | 401 | |
5cf23dbb | 402 | extern const u32 nfsd_suppattrs[3][3]; |
7e705706 | 403 | |
10db6512 | 404 | static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr, |
af76fc6c OK |
405 | struct nfs42_netaddr *netaddr) |
406 | { | |
407 | struct sockaddr_in *sin = (struct sockaddr_in *)addr; | |
408 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; | |
409 | unsigned int port; | |
410 | size_t ret_addr, ret_port; | |
411 | ||
412 | switch (addr->sa_family) { | |
413 | case AF_INET: | |
414 | port = ntohs(sin->sin_port); | |
415 | sprintf(netaddr->netid, "tcp"); | |
416 | netaddr->netid_len = 3; | |
417 | break; | |
418 | case AF_INET6: | |
419 | port = ntohs(sin6->sin6_port); | |
420 | sprintf(netaddr->netid, "tcp6"); | |
421 | netaddr->netid_len = 4; | |
422 | break; | |
423 | default: | |
424 | return nfserr_inval; | |
425 | } | |
426 | ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr)); | |
427 | ret_port = snprintf(netaddr->addr + ret_addr, | |
428 | RPCBIND_MAXUADDRLEN + 1 - ret_addr, | |
429 | ".%u.%u", port >> 8, port & 0xff); | |
430 | WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr); | |
431 | netaddr->addr_len = ret_addr + ret_port; | |
432 | return 0; | |
433 | } | |
434 | ||
5cf23dbb | 435 | static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) |
7e705706 | 436 | { |
916d2d84 BF |
437 | return !((bm1[0] & ~bm2[0]) || |
438 | (bm1[1] & ~bm2[1]) || | |
439 | (bm1[2] & ~bm2[2])); | |
7e705706 AA |
440 | } |
441 | ||
5cf23dbb | 442 | static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) |
7e705706 | 443 | { |
916d2d84 | 444 | return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]); |
7e705706 AA |
445 | } |
446 | ||
1da177e4 | 447 | /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ |
c7e8472c BS |
448 | #define NFSD_WRITEONLY_ATTRS_WORD1 \ |
449 | (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) | |
1da177e4 | 450 | |
e864c189 BF |
451 | /* |
452 | * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add | |
453 | * a writeable attribute here without also adding code to parse it to | |
454 | * nfsd4_decode_fattr(). | |
455 | */ | |
c7e8472c BS |
456 | #define NFSD_WRITEABLE_ATTRS_WORD0 \ |
457 | (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) | |
458 | #define NFSD_WRITEABLE_ATTRS_WORD1 \ | |
459 | (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ | |
460 | | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) | |
18032ca0 | 461 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
47057abd AG |
462 | #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ |
463 | FATTR4_WORD2_SECURITY_LABEL | |
18032ca0 | 464 | #else |
47057abd | 465 | #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 |
18032ca0 | 466 | #endif |
47057abd AG |
467 | #define NFSD_WRITEABLE_ATTRS_WORD2 \ |
468 | (FATTR4_WORD2_MODE_UMASK \ | |
469 | | MAYBE_FATTR4_WORD2_SECURITY_LABEL) | |
1da177e4 | 470 | |
8c18f205 BH |
471 | #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ |
472 | NFSD_WRITEABLE_ATTRS_WORD0 | |
473 | /* | |
474 | * we currently store the exclusive create verifier in the v_{a,m}time | |
475 | * attributes so the client can't set these at create time using EXCLUSIVE4_1 | |
476 | */ | |
477 | #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ | |
478 | (NFSD_WRITEABLE_ATTRS_WORD1 & \ | |
479 | ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) | |
480 | #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ | |
481 | NFSD_WRITEABLE_ATTRS_WORD2 | |
482 | ||
11fcee02 | 483 | extern int nfsd4_is_junction(struct dentry *dentry); |
797a9d79 JL |
484 | extern int register_cld_notifier(void); |
485 | extern void unregister_cld_notifier(void); | |
486 | #else /* CONFIG_NFSD_V4 */ | |
11fcee02 TM |
487 | static inline int nfsd4_is_junction(struct dentry *dentry) |
488 | { | |
489 | return 0; | |
490 | } | |
491 | ||
797a9d79 JL |
492 | #define register_cld_notifier() 0 |
493 | #define unregister_cld_notifier() do { } while(0) | |
494 | ||
1da177e4 LT |
495 | #endif /* CONFIG_NFSD_V4 */ |
496 | ||
1da177e4 | 497 | #endif /* LINUX_NFSD_NFSD_H */ |