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, const char *scope); 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_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) 234 #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) 235 #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) 236 #define nfserr_stale cpu_to_be32(NFSERR_STALE) 237 #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) 238 #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) 239 #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) 240 #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) 241 #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) 242 #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) 243 #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) 244 #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) 245 #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) 246 #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) 247 #define nfserr_denied cpu_to_be32(NFSERR_DENIED) 248 #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) 249 #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) 250 #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) 251 #define nfserr_same cpu_to_be32(NFSERR_SAME) 252 #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) 253 #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) 254 #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) 255 #define nfserr_moved cpu_to_be32(NFSERR_MOVED) 256 #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) 257 #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) 258 #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) 259 #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) 260 #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) 261 #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) 262 #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) 263 #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) 264 #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) 265 #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) 266 #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) 267 #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) 268 #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) 269 #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) 270 #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) 271 #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) 272 #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) 273 #define nfserr_grace cpu_to_be32(NFSERR_GRACE) 274 #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) 275 #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) 276 #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) 277 #define nfserr_admin_revoked cpu_to_be32(NFS4ERR_ADMIN_REVOKED) 278 #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) 279 #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) 280 #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) 281 #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) 282 #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) 283 #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) 284 #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) 285 #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) 286 #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) 287 #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) 288 #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) 289 #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) 290 #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) 291 #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) 292 #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) 293 #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) 294 #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) 295 #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) 296 #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) 297 #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) 298 #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) 299 #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) 300 #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) 301 #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) 302 #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) 303 #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) 304 #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) 305 #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) 306 #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) 307 #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) 308 #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) 309 #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) 310 #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) 311 #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) 312 #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) 313 #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) 314 #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) 315 #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) 316 #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) 317 #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) 318 #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) 319 #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) 320 #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) 321 #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) 322 #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) 323 #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) 324 #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) 325 #define nfserr_file_open cpu_to_be32(NFS4ERR_FILE_OPEN) 326 #define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG) 327 #define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR) 328 329 /* error codes for internal use */ 330 /* if a request fails due to kmalloc failure, it gets dropped. 331 * Client should resend eventually 332 */ 333 #define nfserr_dropit cpu_to_be32(30000) 334 /* end-of-file indicator in readdir */ 335 #define nfserr_eof cpu_to_be32(30001) 336 /* replay detected */ 337 #define nfserr_replay_me cpu_to_be32(11001) 338 /* nfs41 replay detected */ 339 #define nfserr_replay_cache cpu_to_be32(11002) 340 341 /* Check for dir entries '.' and '..' */ 342 #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) 343 344 #ifdef CONFIG_NFSD_V4 345 346 /* before processing a COMPOUND operation, we have to check that there 347 * is enough space in the buffer for XDR encode to succeed. otherwise, 348 * we might process an operation with side effects, and be unable to 349 * tell the client that the operation succeeded. 350 * 351 * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space 352 * needed to encode an "ordinary" _successful_ operation. (GETATTR, 353 * READ, READDIR, and READLINK have their own buffer checks.) if we 354 * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. 355 * 356 * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space 357 * needed to encode an operation which has failed with NFS4ERR_RESOURCE. 358 * care is taken to ensure that we never fall below this level for any 359 * reason. 360 */ 361 #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ 362 #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ 363 364 #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ 365 #define NFSD_COURTESY_CLIENT_TIMEOUT (24 * 60 * 60) /* seconds */ 366 #define NFSD_CLIENT_MAX_TRIM_PER_RUN 128 367 #define NFS4_CLIENTS_PER_GB 1024 368 #define NFSD_DELEGRETURN_TIMEOUT (HZ / 34) /* 30ms */ 369 #define NFSD_CB_GETATTR_TIMEOUT NFSD_DELEGRETURN_TIMEOUT 370 371 /* 372 * The following attributes are currently not supported by the NFSv4 server: 373 * ARCHIVE (deprecated anyway) 374 * HIDDEN (unlikely to be supported any time soon) 375 * MIMETYPE (unlikely to be supported any time soon) 376 * QUOTA_* (will be supported in a forthcoming patch) 377 * SYSTEM (unlikely to be supported any time soon) 378 * TIME_BACKUP (unlikely to be supported any time soon) 379 * TIME_CREATE (unlikely to be supported any time soon) 380 */ 381 #define NFSD4_SUPPORTED_ATTRS_WORD0 \ 382 (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ 383 | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ 384 | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ 385 | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ 386 | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ 387 | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ 388 | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ 389 | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ 390 | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ 391 | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) 392 393 #define NFSD4_SUPPORTED_ATTRS_WORD1 \ 394 (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ 395 | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ 396 | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ 397 | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ 398 | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_CREATE \ 399 | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) 400 401 #define NFSD4_SUPPORTED_ATTRS_WORD2 0 402 403 /* 4.1 */ 404 #ifdef CONFIG_NFSD_PNFS 405 #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES 406 #define PNFSD_SUPPORTED_ATTRS_WORD2 \ 407 (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) 408 #else 409 #define PNFSD_SUPPORTED_ATTRS_WORD1 0 410 #define PNFSD_SUPPORTED_ATTRS_WORD2 0 411 #endif /* CONFIG_NFSD_PNFS */ 412 413 #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ 414 NFSD4_SUPPORTED_ATTRS_WORD0 415 416 #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ 417 (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) 418 419 #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ 420 (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ 421 FATTR4_WORD2_SUPPATTR_EXCLCREAT) 422 423 /* 4.2 */ 424 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 425 #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL 426 #else 427 #define NFSD4_2_SECURITY_ATTRS 0 428 #endif 429 430 #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ 431 (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ 432 FATTR4_WORD2_MODE_UMASK | \ 433 NFSD4_2_SECURITY_ATTRS | \ 434 FATTR4_WORD2_XATTR_SUPPORT) 435 436 extern const u32 nfsd_suppattrs[3][3]; 437 438 static inline __be32 nfsd4_set_netaddr(struct sockaddr *addr, 439 struct nfs42_netaddr *netaddr) 440 { 441 struct sockaddr_in *sin = (struct sockaddr_in *)addr; 442 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; 443 unsigned int port; 444 size_t ret_addr, ret_port; 445 446 switch (addr->sa_family) { 447 case AF_INET: 448 port = ntohs(sin->sin_port); 449 sprintf(netaddr->netid, "tcp"); 450 netaddr->netid_len = 3; 451 break; 452 case AF_INET6: 453 port = ntohs(sin6->sin6_port); 454 sprintf(netaddr->netid, "tcp6"); 455 netaddr->netid_len = 4; 456 break; 457 default: 458 return nfserr_inval; 459 } 460 ret_addr = rpc_ntop(addr, netaddr->addr, sizeof(netaddr->addr)); 461 ret_port = snprintf(netaddr->addr + ret_addr, 462 RPCBIND_MAXUADDRLEN + 1 - ret_addr, 463 ".%u.%u", port >> 8, port & 0xff); 464 WARN_ON(ret_port >= RPCBIND_MAXUADDRLEN + 1 - ret_addr); 465 netaddr->addr_len = ret_addr + ret_port; 466 return 0; 467 } 468 469 static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) 470 { 471 return !((bm1[0] & ~bm2[0]) || 472 (bm1[1] & ~bm2[1]) || 473 (bm1[2] & ~bm2[2])); 474 } 475 476 static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) 477 { 478 return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]); 479 } 480 481 /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ 482 #define NFSD_WRITEONLY_ATTRS_WORD1 \ 483 (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) 484 485 /* 486 * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add 487 * a writeable attribute here without also adding code to parse it to 488 * nfsd4_decode_fattr(). 489 */ 490 #define NFSD_WRITEABLE_ATTRS_WORD0 \ 491 (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) 492 #define NFSD_WRITEABLE_ATTRS_WORD1 \ 493 (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ 494 | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_CREATE \ 495 | FATTR4_WORD1_TIME_MODIFY_SET) 496 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 497 #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ 498 FATTR4_WORD2_SECURITY_LABEL 499 #else 500 #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 501 #endif 502 #define NFSD_WRITEABLE_ATTRS_WORD2 \ 503 (FATTR4_WORD2_MODE_UMASK \ 504 | MAYBE_FATTR4_WORD2_SECURITY_LABEL) 505 506 #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ 507 NFSD_WRITEABLE_ATTRS_WORD0 508 /* 509 * we currently store the exclusive create verifier in the v_{a,m}time 510 * attributes so the client can't set these at create time using EXCLUSIVE4_1 511 */ 512 #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ 513 (NFSD_WRITEABLE_ATTRS_WORD1 & \ 514 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) 515 #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ 516 NFSD_WRITEABLE_ATTRS_WORD2 517 518 extern int nfsd4_is_junction(struct dentry *dentry); 519 extern int register_cld_notifier(void); 520 extern void unregister_cld_notifier(void); 521 #ifdef CONFIG_NFSD_V4_2_INTER_SSC 522 extern void nfsd4_ssc_init_umount_work(struct nfsd_net *nn); 523 #endif 524 525 extern void nfsd4_init_leases_net(struct nfsd_net *nn); 526 527 #else /* CONFIG_NFSD_V4 */ 528 static inline int nfsd4_is_junction(struct dentry *dentry) 529 { 530 return 0; 531 } 532 533 static inline void nfsd4_init_leases_net(struct nfsd_net *nn) { }; 534 535 #define register_cld_notifier() 0 536 #define unregister_cld_notifier() do { } while(0) 537 538 #endif /* CONFIG_NFSD_V4 */ 539 540 #endif /* LINUX_NFSD_NFSD_H */ 541