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 "export.h" 27 28 #undef ifdebug 29 #ifdef CONFIG_SUNRPC_DEBUG 30 # define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag) 31 #else 32 # define ifdebug(flag) if (0) 33 #endif 34 35 /* 36 * nfsd version 37 */ 38 #define NFSD_MINVERS 2 39 #define NFSD_MAXVERS 4 40 #define NFSD_SUPPORTED_MINOR_VERSION 2 41 bool nfsd_support_version(int vers); 42 43 #include "netns.h" 44 #include "stats.h" 45 46 /* 47 * Default and maximum payload size (NFS READ or WRITE), in bytes. 48 * The default is historical, and the maximum is an implementation 49 * limit. 50 */ 51 enum { 52 NFSSVC_DEFBLKSIZE = 1 * 1024 * 1024, 53 NFSSVC_MAXBLKSIZE = RPCSVC_MAXPAYLOAD, 54 }; 55 56 struct readdir_cd { 57 __be32 err; /* 0, nfserr, or nfserr_eof */ 58 }; 59 60 struct nfsd_genl_rqstp { 61 struct sockaddr rq_daddr; 62 struct sockaddr rq_saddr; 63 unsigned long rq_flags; 64 ktime_t rq_stime; 65 __be32 rq_xid; 66 u32 rq_vers; 67 u32 rq_prog; 68 u32 rq_proc; 69 70 /* NFSv4 compound */ 71 u32 rq_opcnt; 72 u32 rq_opnum[16]; 73 }; 74 75 extern struct svc_program nfsd_programs[]; 76 extern const struct svc_version nfsd_version2, nfsd_version3, nfsd_version4; 77 extern struct mutex nfsd_mutex; 78 extern atomic_t nfsd_th_cnt; /* number of available threads */ 79 80 extern const struct seq_operations nfs_exports_op; 81 82 /* 83 * Common void argument and result helpers 84 */ 85 struct nfsd_voidargs { }; 86 struct nfsd_voidres { }; 87 bool nfssvc_decode_voidarg(struct svc_rqst *rqstp, 88 struct xdr_stream *xdr); 89 bool nfssvc_encode_voidres(struct svc_rqst *rqstp, 90 struct xdr_stream *xdr); 91 92 /* 93 * Function prototypes. 94 */ 95 int nfsd_svc(int n, int *nservers, struct net *net, 96 const struct cred *cred, const char *scope); 97 int nfsd_dispatch(struct svc_rqst *rqstp); 98 99 int nfsd_nrthreads(struct net *); 100 int nfsd_nrpools(struct net *); 101 int nfsd_get_nrthreads(int n, int *, struct net *); 102 int nfsd_set_nrthreads(int n, int *, struct net *); 103 void nfsd_shutdown_threads(struct net *net); 104 105 struct svc_rqst *nfsd_current_rqst(void); 106 107 struct nfsdfs_client { 108 struct kref cl_ref; 109 void (*cl_release)(struct kref *kref); 110 }; 111 112 struct nfsdfs_client *get_nfsdfs_client(struct inode *); 113 struct dentry *nfsd_client_mkdir(struct nfsd_net *nn, 114 struct nfsdfs_client *ncl, u32 id, 115 const struct tree_descr *, 116 struct dentry **fdentries); 117 void nfsd_client_rmdir(struct dentry *dentry); 118 119 120 #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) 121 #ifdef CONFIG_NFSD_V2_ACL 122 extern const struct svc_version nfsd_acl_version2; 123 #else 124 #define nfsd_acl_version2 NULL 125 #endif 126 #ifdef CONFIG_NFSD_V3_ACL 127 extern const struct svc_version nfsd_acl_version3; 128 #else 129 #define nfsd_acl_version3 NULL 130 #endif 131 #endif 132 133 #if IS_ENABLED(CONFIG_NFS_LOCALIO) 134 extern const struct svc_version localio_version1; 135 #endif 136 137 struct nfsd_net; 138 139 enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL }; 140 int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change); 141 int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change); 142 void nfsd_reset_versions(struct nfsd_net *nn); 143 int nfsd_create_serv(struct net *net); 144 void nfsd_destroy_serv(struct net *net); 145 146 #ifdef CONFIG_DEBUG_FS 147 void nfsd_debugfs_init(void); 148 void nfsd_debugfs_exit(void); 149 #else 150 static inline void nfsd_debugfs_init(void) {} 151 static inline void nfsd_debugfs_exit(void) {} 152 #endif 153 154 extern bool nfsd_disable_splice_read __read_mostly; 155 156 enum { 157 /* Any new NFSD_IO enum value must be added at the end */ 158 NFSD_IO_BUFFERED, 159 NFSD_IO_DONTCACHE, 160 }; 161 162 extern u64 nfsd_io_cache_read __read_mostly; 163 extern u64 nfsd_io_cache_write __read_mostly; 164 165 extern int nfsd_max_blksize; 166 167 static inline int nfsd_v4client(struct svc_rqst *rq) 168 { 169 return rq && rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4; 170 } 171 static inline struct user_namespace * 172 nfsd_user_namespace(const struct svc_rqst *rqstp) 173 { 174 const struct cred *cred = rqstp->rq_xprt->xpt_cred; 175 return cred ? cred->user_ns : &init_user_ns; 176 } 177 178 /* 179 * NFSv4 State 180 */ 181 #ifdef CONFIG_NFSD_V4 182 extern unsigned long max_delegations; 183 int nfsd4_init_slabs(void); 184 void nfsd4_free_slabs(void); 185 int nfs4_state_start(void); 186 int nfs4_state_start_net(struct net *net); 187 void nfs4_state_shutdown(void); 188 void nfs4_state_shutdown_net(struct net *net); 189 int nfs4_reset_recoverydir(char *recdir); 190 char * nfs4_recoverydir(void); 191 bool nfsd4_spo_must_allow(struct svc_rqst *rqstp); 192 int nfsd4_create_laundry_wq(void); 193 void nfsd4_destroy_laundry_wq(void); 194 bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, struct inode *inode); 195 #else 196 static inline int nfsd4_init_slabs(void) { return 0; } 197 static inline void nfsd4_free_slabs(void) { } 198 static inline int nfs4_state_start(void) { return 0; } 199 static inline int nfs4_state_start_net(struct net *net) { return 0; } 200 static inline void nfs4_state_shutdown(void) { } 201 static inline void nfs4_state_shutdown_net(struct net *net) { } 202 static inline int nfs4_reset_recoverydir(char *recdir) { return 0; } 203 static inline char * nfs4_recoverydir(void) {return NULL; } 204 static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) 205 { 206 return false; 207 } 208 static inline int nfsd4_create_laundry_wq(void) { return 0; }; 209 static inline void nfsd4_destroy_laundry_wq(void) {}; 210 static inline bool nfsd_wait_for_delegreturn(struct svc_rqst *rqstp, 211 struct inode *inode) 212 { 213 return false; 214 } 215 #endif 216 217 /* 218 * lockd binding 219 */ 220 void nfsd_lockd_init(void); 221 void nfsd_lockd_shutdown(void); 222 223 224 /* 225 * These macros provide pre-xdr'ed values for faster operation. 226 */ 227 #define nfs_ok cpu_to_be32(NFS_OK) 228 #define nfserr_perm cpu_to_be32(NFSERR_PERM) 229 #define nfserr_noent cpu_to_be32(NFSERR_NOENT) 230 #define nfserr_io cpu_to_be32(NFSERR_IO) 231 #define nfserr_nxio cpu_to_be32(NFSERR_NXIO) 232 #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN) 233 #define nfserr_acces cpu_to_be32(NFSERR_ACCES) 234 #define nfserr_exist cpu_to_be32(NFSERR_EXIST) 235 #define nfserr_xdev cpu_to_be32(NFSERR_XDEV) 236 #define nfserr_nodev cpu_to_be32(NFSERR_NODEV) 237 #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR) 238 #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR) 239 #define nfserr_inval cpu_to_be32(NFSERR_INVAL) 240 #define nfserr_fbig cpu_to_be32(NFSERR_FBIG) 241 #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC) 242 #define nfserr_rofs cpu_to_be32(NFSERR_ROFS) 243 #define nfserr_mlink cpu_to_be32(NFSERR_MLINK) 244 #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) 245 #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) 246 #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) 247 #define nfserr_stale cpu_to_be32(NFSERR_STALE) 248 #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) 249 #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) 250 #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) 251 #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) 252 #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) 253 #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) 254 #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) 255 #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) 256 #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) 257 #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) 258 #define nfserr_denied cpu_to_be32(NFSERR_DENIED) 259 #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) 260 #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) 261 #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) 262 #define nfserr_same cpu_to_be32(NFSERR_SAME) 263 #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) 264 #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) 265 #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) 266 #define nfserr_moved cpu_to_be32(NFSERR_MOVED) 267 #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) 268 #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) 269 #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) 270 #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) 271 #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) 272 #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) 273 #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) 274 #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) 275 #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) 276 #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) 277 #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) 278 #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) 279 #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) 280 #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) 281 #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) 282 #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) 283 #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) 284 #define nfserr_grace cpu_to_be32(NFSERR_GRACE) 285 #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) 286 #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) 287 #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) 288 #define nfserr_admin_revoked cpu_to_be32(NFS4ERR_ADMIN_REVOKED) 289 #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) 290 #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) 291 #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) 292 #define nfserr_delay cpu_to_be32(NFS4ERR_DELAY) 293 #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) 294 #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) 295 #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) 296 #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) 297 #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) 298 #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) 299 #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) 300 #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) 301 #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) 302 #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) 303 #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) 304 #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) 305 #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) 306 #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) 307 #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) 308 #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) 309 #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) 310 #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) 311 #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) 312 #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) 313 #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) 314 #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) 315 #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) 316 #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) 317 #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) 318 #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) 319 #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) 320 #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) 321 #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) 322 #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) 323 #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) 324 #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) 325 #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) 326 #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) 327 #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) 328 #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) 329 #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) 330 #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) 331 #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) 332 #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) 333 #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) 334 #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) 335 #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) 336 #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) 337 #define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN) 338 #define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG) 339 #define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR) 340 341 /* 342 * Error codes for internal use. We use enum to choose numbers that are 343 * not already assigned, then covert to be32 resulting in a number that 344 * cannot conflict with any existing be32 nfserr value. 345 */ 346 enum { 347 /* end-of-file indicator in readdir */ 348 NFSERR_EOF = NFS4ERR_FIRST_FREE, 349 #define nfserr_eof cpu_to_be32(NFSERR_EOF) 350 351 /* replay detected */ 352 NFSERR_REPLAY_ME, 353 #define nfserr_replay_me cpu_to_be32(NFSERR_REPLAY_ME) 354 355 /* nfs41 replay detected */ 356 NFSERR_REPLAY_CACHE, 357 #define nfserr_replay_cache cpu_to_be32(NFSERR_REPLAY_CACHE) 358 359 /* symlink found where dir expected - handled differently to 360 * other symlink found errors by NFSv3. 361 */ 362 NFSERR_SYMLINK_NOT_DIR, 363 #define nfserr_symlink_not_dir cpu_to_be32(NFSERR_SYMLINK_NOT_DIR) 364 }; 365 366 /* Check for dir entries '.' and '..' */ 367 #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) 368 369 #ifdef CONFIG_NFSD_V4 370 371 /* before processing a COMPOUND operation, we have to check that there 372 * is enough space in the buffer for XDR encode to succeed. otherwise, 373 * we might process an operation with side effects, and be unable to 374 * tell the client that the operation succeeded. 375 * 376 * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space 377 * needed to encode an "ordinary" _successful_ operation. (GETATTR, 378 * READ, READDIR, and READLINK have their own buffer checks.) if we 379 * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. 380 * 381 * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space 382 * needed to encode an operation which has failed with NFS4ERR_RESOURCE. 383 * care is taken to ensure that we never fall below this level for any 384 * reason. 385 */ 386 #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ 387 #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ 388 389 #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ 390 #define NFSD_COURTESY_CLIENT_TIMEOUT (24 * 60 * 60) /* seconds */ 391 #define NFSD_CLIENT_MAX_TRIM_PER_RUN 128 392 #define NFS4_CLIENTS_PER_GB 1024 393 #define NFSD_DELEGRETURN_TIMEOUT (HZ / 34) /* 30ms */ 394 #define NFSD_CB_GETATTR_TIMEOUT NFSD_DELEGRETURN_TIMEOUT 395 396 /* 397 * The following attributes are currently not supported by the NFSv4 server: 398 * ARCHIVE (deprecated anyway) 399 * HIDDEN (unlikely to be supported any time soon) 400 * MIMETYPE (unlikely to be supported any time soon) 401 * QUOTA_* (will be supported in a forthcoming patch) 402 * SYSTEM (unlikely to be supported any time soon) 403 * TIME_BACKUP (unlikely to be supported any time soon) 404 * TIME_CREATE (unlikely to be supported any time soon) 405 */ 406 #define NFSD4_SUPPORTED_ATTRS_WORD0 \ 407 (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ 408 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ 409 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ 410 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ 411 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ 412 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ 413 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ 414 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ 415 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ 416 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) 417 418 #define NFSD4_SUPPORTED_ATTRS_WORD1 \ 419 (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ 420 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ 421 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ 422 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ 423 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \ 424 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) 425 426 #define NFSD4_SUPPORTED_ATTRS_WORD2 0 427 428 /* 4.1 */ 429 #ifdef CONFIG_NFSD_PNFS 430 #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES 431 #define PNFSD_SUPPORTED_ATTRS_WORD2 \ 432 (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) 433 #else 434 #define PNFSD_SUPPORTED_ATTRS_WORD1 0 435 #define PNFSD_SUPPORTED_ATTRS_WORD2 0 436 #endif /* CONFIG_NFSD_PNFS */ 437 438 #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ 439 NFSD4_SUPPORTED_ATTRS_WORD0 440 441 #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ 442 (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) 443 444 #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ 445 (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ 446 FATTR4_WORD2_SUPPATTR_EXCLCREAT) 447 448 /* 4.2 */ 449 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 450 #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL 451 #else 452 #define NFSD4_2_SECURITY_ATTRS 0 453 #endif 454 455 #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ 456 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ 457 FATTR4_WORD2_MODE_UMASK | \ 458 NFSD4_2_SECURITY_ATTRS | \ 459 FATTR4_WORD2_XATTR_SUPPORT | \ 460 FATTR4_WORD2_TIME_DELEG_ACCESS | \ 461 FATTR4_WORD2_TIME_DELEG_MODIFY | \ 462 FATTR4_WORD2_OPEN_ARGUMENTS) 463 464 extern const u32 nfsd_suppattrs[3][3]; 465 466 static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr, 467 struct nfs42_netaddr *netaddr) 468 { 469 struct sockaddr_in *sin = (struct sockaddr_in *)addr; 470 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; 471 unsigned int port; 472 size_t ret_addr, ret_port; 473 474 switch (addr->sa_family) { 475 case AF_INET: 476 port = ntohs(sin->sin_port); 477 sprintf(netaddr->netid, "tcp"); 478 netaddr->netid_len = 3; 479 break; 480 case AF_INET6: 481 port = ntohs(sin6->sin6_port); 482 sprintf(netaddr->netid, "tcp6"); 483 netaddr->netid_len = 4; 484 break; 485 default: 486 return nfserr_inval; 487 } 488 ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr)); 489 ret_port = snprintf(netaddr->addr + ret_addr, 490 RPCBIND_MAXUADDRLEN + 1 - ret_addr, 491 ".%u.%u", port >> 8, port & 0xff); 492 WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr); 493 netaddr->addr_len = ret_addr + ret_port; 494 return 0; 495 } 496 497 static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) 498 { 499 return !((bm1[0] & ~bm2[0]) || 500 (bm1[1] & ~bm2[1]) || 501 (bm1[2] & ~bm2[2])); 502 } 503 504 static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) 505 { 506 return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]); 507 } 508 509 /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ 510 #define NFSD_WRITEONLY_ATTRS_WORD1 \ 511 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) 512 513 /* 514 * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add 515 * a writeable attribute here without also adding code to parse it to 516 * nfsd4_decode_fattr(). 517 */ 518 #define NFSD_WRITEABLE_ATTRS_WORD0 \ 519 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) 520 #define NFSD_WRITEABLE_ATTRS_WORD1 \ 521 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ 522 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_CREATE \ 523 | FATTR4_WORD1_TIME_MODIFY_SET) 524 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 525 #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ 526 FATTR4_WORD2_SECURITY_LABEL 527 #else 528 #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 529 #endif 530 #define NFSD_WRITEABLE_ATTRS_WORD2 \ 531 (FATTR4_WORD2_MODE_UMASK \ 532 | MAYBE_FATTR4_WORD2_SECURITY_LABEL \ 533 | FATTR4_WORD2_TIME_DELEG_ACCESS \ 534 | FATTR4_WORD2_TIME_DELEG_MODIFY \ 535 ) 536 537 #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ 538 NFSD_WRITEABLE_ATTRS_WORD0 539 /* 540 * we currently store the exclusive create verifier in the v_{a,m}time 541 * attributes so the client can't set these at create time using EXCLUSIVE4_1 542 */ 543 #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ 544 (NFSD_WRITEABLE_ATTRS_WORD1 & \ 545 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) 546 #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ 547 NFSD_WRITEABLE_ATTRS_WORD2 548 549 extern int nfsd4_is_junction(struct dentry *dentry); 550 extern int register_cld_notifier(void); 551 extern void unregister_cld_notifier(void); 552 #ifdef CONFIG_NFSD_V4_2_INTER_SSC 553 extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn); 554 #endif 555 556 extern void nfsd4_init_leases_net(struct nfsd_net *nn); 557 558 #else /* CONFIG_NFSD_V4 */ 559 static inline int nfsd4_is_junction(struct dentry *dentry) 560 { 561 return 0; 562 } 563 564 static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { }; 565 566 #define register_cld_notifier() 0 567 #define unregister_cld_notifier() do { } while(0) 568 569 #endif /* CONFIG_NFSD_V4 */ 570 571 #endif /* LINUX_NFSD_NFSD_H */ 572