1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 29a74af21SBoaz Harrosh /* 39a74af21SBoaz Harrosh * Hodge-podge collection of knfsd-related stuff. 49a74af21SBoaz Harrosh * I will sort this out later. 59a74af21SBoaz Harrosh * 69a74af21SBoaz Harrosh * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> 79a74af21SBoaz Harrosh */ 89a74af21SBoaz Harrosh 99a74af21SBoaz Harrosh #ifndef LINUX_NFSD_NFSD_H 109a74af21SBoaz Harrosh #define LINUX_NFSD_NFSD_H 119a74af21SBoaz Harrosh 129a74af21SBoaz Harrosh #include <linux/types.h> 139a74af21SBoaz Harrosh #include <linux/mount.h> 149a74af21SBoaz Harrosh 15c10bd39dSJ. Bruce Fields #include <linux/nfs.h> 16c10bd39dSJ. Bruce Fields #include <linux/nfs2.h> 17c10bd39dSJ. Bruce Fields #include <linux/nfs3.h> 18c10bd39dSJ. Bruce Fields #include <linux/nfs4.h> 199c69de4cSChristoph Hellwig #include <linux/sunrpc/svc.h> 20e45d1a18STrond Myklebust #include <linux/sunrpc/svc_xprt.h> 21c10bd39dSJ. Bruce Fields #include <linux/sunrpc/msg_prot.h> 22c10bd39dSJ. Bruce Fields 236f226e2aSChristoph Hellwig #include <uapi/linux/nfsd/debug.h> 24c10bd39dSJ. Bruce Fields 25*e8a79fb1SJ. Bruce Fields #include "netns.h" 267f94423eSChristoph Hellwig #include "stats.h" 27d430e8d5SChristoph Hellwig #include "export.h" 28d430e8d5SChristoph Hellwig 296f226e2aSChristoph Hellwig #undef ifdebug 30135dd002SMark Salter #ifdef CONFIG_SUNRPC_DEBUG 316f226e2aSChristoph Hellwig # define ifdebug(flag) if (nfsd_debug & NFSDDBG_##flag) 326f226e2aSChristoph Hellwig #else 336f226e2aSChristoph Hellwig # define ifdebug(flag) if (0) 346f226e2aSChristoph Hellwig #endif 356f226e2aSChristoph Hellwig 369a74af21SBoaz Harrosh /* 379a74af21SBoaz Harrosh * nfsd version 389a74af21SBoaz Harrosh */ 394bdc33edSSteve Dickson #define NFSD_SUPPORTED_MINOR_VERSION 2 40c10bd39dSJ. Bruce Fields /* 41c10bd39dSJ. Bruce Fields * Maximum blocksizes supported by daemon under various circumstances. 42c10bd39dSJ. Bruce Fields */ 43c10bd39dSJ. Bruce Fields #define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD 44c10bd39dSJ. Bruce Fields /* NFSv2 is limited by the protocol specification, see RFC 1094 */ 45c10bd39dSJ. Bruce Fields #define NFSSVC_MAXBLKSIZE_V2 (8*1024) 46c10bd39dSJ. Bruce Fields 47c10bd39dSJ. Bruce Fields 48c10bd39dSJ. Bruce Fields /* 49c10bd39dSJ. Bruce Fields * Largest number of bytes we need to allocate for an NFS 50c10bd39dSJ. Bruce Fields * call or reply. Used to control buffer sizes. We use 51c10bd39dSJ. Bruce Fields * the length of v3 WRITE, READDIR and READDIR replies 52c10bd39dSJ. Bruce Fields * which are an RPC header, up to 26 XDR units of reply 53c10bd39dSJ. Bruce Fields * data, and some page data. 54c10bd39dSJ. Bruce Fields * 55c10bd39dSJ. Bruce Fields * Note that accuracy here doesn't matter too much as the 56c10bd39dSJ. Bruce Fields * size is rounded up to a page size when allocating space. 57c10bd39dSJ. Bruce Fields */ 58c10bd39dSJ. Bruce Fields #define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE) 599a74af21SBoaz Harrosh 609a74af21SBoaz Harrosh struct readdir_cd { 619a74af21SBoaz Harrosh __be32 err; /* 0, nfserr, or nfserr_eof */ 629a74af21SBoaz Harrosh }; 639a74af21SBoaz Harrosh 649a74af21SBoaz Harrosh 659a74af21SBoaz Harrosh extern struct svc_program nfsd_program; 66e9679189SChristoph Hellwig extern const struct svc_version nfsd_version2, nfsd_version3, 679a74af21SBoaz Harrosh nfsd_version4; 689a74af21SBoaz Harrosh extern struct mutex nfsd_mutex; 699a74af21SBoaz Harrosh extern spinlock_t nfsd_drc_lock; 70697ce9beSZhang Yanfei extern unsigned long nfsd_drc_max_mem; 71697ce9beSZhang Yanfei extern unsigned long nfsd_drc_mem_used; 729a74af21SBoaz Harrosh 739a74af21SBoaz Harrosh extern const struct seq_operations nfs_exports_op; 749a74af21SBoaz Harrosh 759a74af21SBoaz Harrosh /* 769a74af21SBoaz Harrosh * Function prototypes. 779a74af21SBoaz Harrosh */ 784df493a2STrond Myklebust int nfsd_svc(int nrservs, struct net *net, const struct cred *cred); 799a74af21SBoaz Harrosh int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp); 809a74af21SBoaz Harrosh 819dd9845fSStanislav Kinsbursky int nfsd_nrthreads(struct net *); 829dd9845fSStanislav Kinsbursky int nfsd_nrpools(struct net *); 839dd9845fSStanislav Kinsbursky int nfsd_get_nrthreads(int n, int *, struct net *); 843938a0d5SStanislav Kinsbursky int nfsd_set_nrthreads(int n, int *, struct net *); 857f2e7dc0SJ. Bruce Fields int nfsd_pool_stats_open(struct inode *, struct file *); 867f2e7dc0SJ. Bruce Fields int nfsd_pool_stats_release(struct inode *, struct file *); 879a74af21SBoaz Harrosh 889dd9845fSStanislav Kinsbursky void nfsd_destroy(struct net *net); 8919f7e2caSStanislav Kinsbursky 90*e8a79fb1SJ. Bruce Fields struct nfsdfs_client { 91*e8a79fb1SJ. Bruce Fields struct kref cl_ref; 92*e8a79fb1SJ. Bruce Fields void (*cl_release)(struct kref *kref); 93*e8a79fb1SJ. Bruce Fields }; 94*e8a79fb1SJ. Bruce Fields 95*e8a79fb1SJ. Bruce Fields struct dentry *nfsd_client_mkdir(struct nfsd_net *nn, struct nfsdfs_client *ncl, u32 id); 96*e8a79fb1SJ. Bruce Fields void nfsd_client_rmdir(struct dentry *dentry); 97*e8a79fb1SJ. Bruce Fields 989a74af21SBoaz Harrosh #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) 999a74af21SBoaz Harrosh #ifdef CONFIG_NFSD_V2_ACL 100e9679189SChristoph Hellwig extern const struct svc_version nfsd_acl_version2; 1019a74af21SBoaz Harrosh #else 1029a74af21SBoaz Harrosh #define nfsd_acl_version2 NULL 1039a74af21SBoaz Harrosh #endif 1049a74af21SBoaz Harrosh #ifdef CONFIG_NFSD_V3_ACL 105e9679189SChristoph Hellwig extern const struct svc_version nfsd_acl_version3; 1069a74af21SBoaz Harrosh #else 1079a74af21SBoaz Harrosh #define nfsd_acl_version3 NULL 1089a74af21SBoaz Harrosh #endif 1099a74af21SBoaz Harrosh #endif 1109a74af21SBoaz Harrosh 111e333f3bbSTrond Myklebust struct nfsd_net; 112e333f3bbSTrond Myklebust 1139a74af21SBoaz Harrosh enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL }; 114e333f3bbSTrond Myklebust int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change); 115e333f3bbSTrond Myklebust int nfsd_minorversion(struct nfsd_net *nn, u32 minorversion, enum vers_op change); 116e333f3bbSTrond Myklebust void nfsd_reset_versions(struct nfsd_net *nn); 1176777436bSStanislav Kinsbursky int nfsd_create_serv(struct net *net); 1189a74af21SBoaz Harrosh 1199a74af21SBoaz Harrosh extern int nfsd_max_blksize; 1209a74af21SBoaz Harrosh 12103a816b4SSteve Dickson static inline int nfsd_v4client(struct svc_rqst *rq) 12203a816b4SSteve Dickson { 12303a816b4SSteve Dickson return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4; 12403a816b4SSteve Dickson } 125e45d1a18STrond Myklebust static inline struct user_namespace * 126e45d1a18STrond Myklebust nfsd_user_namespace(const struct svc_rqst *rqstp) 127e45d1a18STrond Myklebust { 128e45d1a18STrond Myklebust const struct cred *cred = rqstp->rq_xprt->xpt_cred; 129e45d1a18STrond Myklebust return cred ? cred->user_ns : &init_user_ns; 130e45d1a18STrond Myklebust } 13103a816b4SSteve Dickson 1329a74af21SBoaz Harrosh /* 1339a74af21SBoaz Harrosh * NFSv4 State 1349a74af21SBoaz Harrosh */ 1359a74af21SBoaz Harrosh #ifdef CONFIG_NFSD_V4 136697ce9beSZhang Yanfei extern unsigned long max_delegations; 13772083396SBryan Schumaker int nfsd4_init_slabs(void); 1389a74af21SBoaz Harrosh void nfsd4_free_slabs(void); 1399a74af21SBoaz Harrosh int nfs4_state_start(void); 140f252bc68SStanislav Kinsbursky int nfs4_state_start_net(struct net *net); 1419a74af21SBoaz Harrosh void nfs4_state_shutdown(void); 142f252bc68SStanislav Kinsbursky void nfs4_state_shutdown_net(struct net *net); 1439a74af21SBoaz Harrosh void nfs4_reset_lease(time_t leasetime); 1449a74af21SBoaz Harrosh int nfs4_reset_recoverydir(char *recdir); 14587f26f9bSJ. Bruce Fields char * nfs4_recoverydir(void); 146ed941643SAndrew Elble bool nfsd4_spo_must_allow(struct svc_rqst *rqstp); 1479a74af21SBoaz Harrosh #else 14872083396SBryan Schumaker static inline int nfsd4_init_slabs(void) { return 0; } 1499a74af21SBoaz Harrosh static inline void nfsd4_free_slabs(void) { } 1509a74af21SBoaz Harrosh static inline int nfs4_state_start(void) { return 0; } 151f252bc68SStanislav Kinsbursky static inline int nfs4_state_start_net(struct net *net) { return 0; } 1529a74af21SBoaz Harrosh static inline void nfs4_state_shutdown(void) { } 153f252bc68SStanislav Kinsbursky static inline void nfs4_state_shutdown_net(struct net *net) { } 1549a74af21SBoaz Harrosh static inline void nfs4_reset_lease(time_t leasetime) { } 1559a74af21SBoaz Harrosh static inline int nfs4_reset_recoverydir(char *recdir) { return 0; } 15687f26f9bSJ. Bruce Fields static inline char * nfs4_recoverydir(void) {return NULL; } 157ed941643SAndrew Elble static inline bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) 158ed941643SAndrew Elble { 159ed941643SAndrew Elble return false; 160ed941643SAndrew Elble } 1619a74af21SBoaz Harrosh #endif 1629a74af21SBoaz Harrosh 1639a74af21SBoaz Harrosh /* 1649a74af21SBoaz Harrosh * lockd binding 1659a74af21SBoaz Harrosh */ 1669a74af21SBoaz Harrosh void nfsd_lockd_init(void); 1679a74af21SBoaz Harrosh void nfsd_lockd_shutdown(void); 1689a74af21SBoaz Harrosh 1699a74af21SBoaz Harrosh 1709a74af21SBoaz Harrosh /* 1719a74af21SBoaz Harrosh * These macros provide pre-xdr'ed values for faster operation. 1729a74af21SBoaz Harrosh */ 1739a74af21SBoaz Harrosh #define nfs_ok cpu_to_be32(NFS_OK) 1749a74af21SBoaz Harrosh #define nfserr_perm cpu_to_be32(NFSERR_PERM) 1759a74af21SBoaz Harrosh #define nfserr_noent cpu_to_be32(NFSERR_NOENT) 1769a74af21SBoaz Harrosh #define nfserr_io cpu_to_be32(NFSERR_IO) 1779a74af21SBoaz Harrosh #define nfserr_nxio cpu_to_be32(NFSERR_NXIO) 1789a74af21SBoaz Harrosh #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN) 1799a74af21SBoaz Harrosh #define nfserr_acces cpu_to_be32(NFSERR_ACCES) 1809a74af21SBoaz Harrosh #define nfserr_exist cpu_to_be32(NFSERR_EXIST) 1819a74af21SBoaz Harrosh #define nfserr_xdev cpu_to_be32(NFSERR_XDEV) 1829a74af21SBoaz Harrosh #define nfserr_nodev cpu_to_be32(NFSERR_NODEV) 1839a74af21SBoaz Harrosh #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR) 1849a74af21SBoaz Harrosh #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR) 1859a74af21SBoaz Harrosh #define nfserr_inval cpu_to_be32(NFSERR_INVAL) 1869a74af21SBoaz Harrosh #define nfserr_fbig cpu_to_be32(NFSERR_FBIG) 1879a74af21SBoaz Harrosh #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC) 1889a74af21SBoaz Harrosh #define nfserr_rofs cpu_to_be32(NFSERR_ROFS) 1899a74af21SBoaz Harrosh #define nfserr_mlink cpu_to_be32(NFSERR_MLINK) 1909a74af21SBoaz Harrosh #define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP) 1919a74af21SBoaz Harrosh #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) 1929a74af21SBoaz Harrosh #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) 1939a74af21SBoaz Harrosh #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) 1949a74af21SBoaz Harrosh #define nfserr_stale cpu_to_be32(NFSERR_STALE) 1959a74af21SBoaz Harrosh #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) 1969a74af21SBoaz Harrosh #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) 1979a74af21SBoaz Harrosh #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) 1989a74af21SBoaz Harrosh #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) 1999a74af21SBoaz Harrosh #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) 2009a74af21SBoaz Harrosh #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) 2019a74af21SBoaz Harrosh #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) 2029a74af21SBoaz Harrosh #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) 2039a74af21SBoaz Harrosh #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) 2049a74af21SBoaz Harrosh #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) 2059a74af21SBoaz Harrosh #define nfserr_denied cpu_to_be32(NFSERR_DENIED) 2069a74af21SBoaz Harrosh #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) 2079a74af21SBoaz Harrosh #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) 2089a74af21SBoaz Harrosh #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) 2099a74af21SBoaz Harrosh #define nfserr_same cpu_to_be32(NFSERR_SAME) 2109a74af21SBoaz Harrosh #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) 2119a74af21SBoaz Harrosh #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) 2129a74af21SBoaz Harrosh #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) 2139a74af21SBoaz Harrosh #define nfserr_moved cpu_to_be32(NFSERR_MOVED) 2149a74af21SBoaz Harrosh #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) 2159a74af21SBoaz Harrosh #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) 2169a74af21SBoaz Harrosh #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) 2179a74af21SBoaz Harrosh #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) 2189a74af21SBoaz Harrosh #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) 2199a74af21SBoaz Harrosh #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) 2209a74af21SBoaz Harrosh #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) 2219a74af21SBoaz Harrosh #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) 2229a74af21SBoaz Harrosh #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) 223f9d7562fSJ. Bruce Fields #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) 2249a74af21SBoaz Harrosh #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) 2259a74af21SBoaz Harrosh #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) 2269a74af21SBoaz Harrosh #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) 2279a74af21SBoaz Harrosh #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) 228f6af99ecSJ. Bruce Fields #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) 2299a74af21SBoaz Harrosh #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) 2309a74af21SBoaz Harrosh #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) 2319a74af21SBoaz Harrosh #define nfserr_grace cpu_to_be32(NFSERR_GRACE) 2329a74af21SBoaz Harrosh #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) 2339a74af21SBoaz Harrosh #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) 2349a74af21SBoaz Harrosh #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) 2359a74af21SBoaz Harrosh #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) 2369a74af21SBoaz Harrosh #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) 2379a74af21SBoaz Harrosh #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) 2389a74af21SBoaz Harrosh #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) 2399a74af21SBoaz Harrosh #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) 2409a74af21SBoaz Harrosh #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) 2419a74af21SBoaz Harrosh #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) 2429a74af21SBoaz Harrosh #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) 2439a74af21SBoaz Harrosh #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) 2449a74af21SBoaz Harrosh #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) 2459a74af21SBoaz Harrosh #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) 2469a74af21SBoaz Harrosh #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) 2479a74af21SBoaz Harrosh #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) 2489a74af21SBoaz Harrosh #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) 2499a74af21SBoaz Harrosh #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) 2509a74af21SBoaz Harrosh #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) 2519a74af21SBoaz Harrosh #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) 2529a74af21SBoaz Harrosh #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) 2539a74af21SBoaz Harrosh #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) 2549a74af21SBoaz Harrosh #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) 2559a74af21SBoaz Harrosh #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) 2569a74af21SBoaz Harrosh #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) 2579a74af21SBoaz Harrosh #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) 2589a74af21SBoaz Harrosh #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) 2599a74af21SBoaz Harrosh #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) 2609a74af21SBoaz Harrosh #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) 2619a74af21SBoaz Harrosh #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) 2629a74af21SBoaz Harrosh #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) 2639a74af21SBoaz Harrosh #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) 2649a74af21SBoaz Harrosh #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) 2659a74af21SBoaz Harrosh #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) 2669a74af21SBoaz Harrosh #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) 2679a74af21SBoaz Harrosh #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) 2689a74af21SBoaz Harrosh #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) 2699a74af21SBoaz Harrosh #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) 2709a74af21SBoaz Harrosh #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) 2719a74af21SBoaz Harrosh #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) 2729a74af21SBoaz Harrosh #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) 2739a74af21SBoaz Harrosh #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) 2749a74af21SBoaz Harrosh #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) 2759a74af21SBoaz Harrosh #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) 2764488cc96SSteve Dickson #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) 2774488cc96SSteve Dickson #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) 2782b8941b9SAnna Schumaker #define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) 2794488cc96SSteve Dickson #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) 2804488cc96SSteve Dickson #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) 2814488cc96SSteve Dickson #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) 2829a74af21SBoaz Harrosh 2839a74af21SBoaz Harrosh /* error codes for internal use */ 2849a74af21SBoaz Harrosh /* if a request fails due to kmalloc failure, it gets dropped. 2859a74af21SBoaz Harrosh * Client should resend eventually 2869a74af21SBoaz Harrosh */ 2879a74af21SBoaz Harrosh #define nfserr_dropit cpu_to_be32(30000) 2889a74af21SBoaz Harrosh /* end-of-file indicator in readdir */ 2899a74af21SBoaz Harrosh #define nfserr_eof cpu_to_be32(30001) 2909a74af21SBoaz Harrosh /* replay detected */ 2919a74af21SBoaz Harrosh #define nfserr_replay_me cpu_to_be32(11001) 2929a74af21SBoaz Harrosh /* nfs41 replay detected */ 2939a74af21SBoaz Harrosh #define nfserr_replay_cache cpu_to_be32(11002) 2949a74af21SBoaz Harrosh 2959a74af21SBoaz Harrosh /* Check for dir entries '.' and '..' */ 2969a74af21SBoaz Harrosh #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) 2979a74af21SBoaz Harrosh 2989a74af21SBoaz Harrosh #ifdef CONFIG_NFSD_V4 2999a74af21SBoaz Harrosh 3009a74af21SBoaz Harrosh /* before processing a COMPOUND operation, we have to check that there 3019a74af21SBoaz Harrosh * is enough space in the buffer for XDR encode to succeed. otherwise, 3029a74af21SBoaz Harrosh * we might process an operation with side effects, and be unable to 3039a74af21SBoaz Harrosh * tell the client that the operation succeeded. 3049a74af21SBoaz Harrosh * 3059a74af21SBoaz Harrosh * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space 3069a74af21SBoaz Harrosh * needed to encode an "ordinary" _successful_ operation. (GETATTR, 3079a74af21SBoaz Harrosh * READ, READDIR, and READLINK have their own buffer checks.) if we 3089a74af21SBoaz Harrosh * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. 3099a74af21SBoaz Harrosh * 3109a74af21SBoaz Harrosh * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space 3119a74af21SBoaz Harrosh * needed to encode an operation which has failed with NFS4ERR_RESOURCE. 3129a74af21SBoaz Harrosh * care is taken to ensure that we never fall below this level for any 3139a74af21SBoaz Harrosh * reason. 3149a74af21SBoaz Harrosh */ 3159a74af21SBoaz Harrosh #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ 31604819bf6SJ. Bruce Fields #define COMPOUND_ERR_SLACK_SPACE 16 /* OP_SETATTR */ 3179a74af21SBoaz Harrosh 318ecec6e34SJ. Bruce Fields #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ 3199a74af21SBoaz Harrosh 3209a74af21SBoaz Harrosh /* 3219a74af21SBoaz Harrosh * The following attributes are currently not supported by the NFSv4 server: 3229a74af21SBoaz Harrosh * ARCHIVE (deprecated anyway) 3239a74af21SBoaz Harrosh * HIDDEN (unlikely to be supported any time soon) 3249a74af21SBoaz Harrosh * MIMETYPE (unlikely to be supported any time soon) 3259a74af21SBoaz Harrosh * QUOTA_* (will be supported in a forthcoming patch) 3269a74af21SBoaz Harrosh * SYSTEM (unlikely to be supported any time soon) 3279a74af21SBoaz Harrosh * TIME_BACKUP (unlikely to be supported any time soon) 3289a74af21SBoaz Harrosh * TIME_CREATE (unlikely to be supported any time soon) 3299a74af21SBoaz Harrosh */ 3309a74af21SBoaz Harrosh #define NFSD4_SUPPORTED_ATTRS_WORD0 \ 3319a74af21SBoaz Harrosh (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ 3329a74af21SBoaz Harrosh | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ 3339a74af21SBoaz Harrosh | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ 3349a74af21SBoaz Harrosh | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ 3359a74af21SBoaz Harrosh | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ 3369a74af21SBoaz Harrosh | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ 3379a74af21SBoaz Harrosh | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ 3389a74af21SBoaz Harrosh | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ 3399a74af21SBoaz Harrosh | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ 3409a74af21SBoaz Harrosh | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) 3419a74af21SBoaz Harrosh 3429a74af21SBoaz Harrosh #define NFSD4_SUPPORTED_ATTRS_WORD1 \ 3439a74af21SBoaz Harrosh (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ 3449a74af21SBoaz Harrosh | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ 3459a74af21SBoaz Harrosh | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ 3469a74af21SBoaz Harrosh | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ 3479a74af21SBoaz Harrosh | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \ 3489a74af21SBoaz Harrosh | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) 3499a74af21SBoaz Harrosh 3509a74af21SBoaz Harrosh #define NFSD4_SUPPORTED_ATTRS_WORD2 0 3519a74af21SBoaz Harrosh 3529cf514ccSChristoph Hellwig /* 4.1 */ 3539cf514ccSChristoph Hellwig #ifdef CONFIG_NFSD_PNFS 3549cf514ccSChristoph Hellwig #define PNFSD_SUPPORTED_ATTRS_WORD1 FATTR4_WORD1_FS_LAYOUT_TYPES 3559cf514ccSChristoph Hellwig #define PNFSD_SUPPORTED_ATTRS_WORD2 \ 3569cf514ccSChristoph Hellwig (FATTR4_WORD2_LAYOUT_BLKSIZE | FATTR4_WORD2_LAYOUT_TYPES) 3579cf514ccSChristoph Hellwig #else 3589cf514ccSChristoph Hellwig #define PNFSD_SUPPORTED_ATTRS_WORD1 0 3599cf514ccSChristoph Hellwig #define PNFSD_SUPPORTED_ATTRS_WORD2 0 3609cf514ccSChristoph Hellwig #endif /* CONFIG_NFSD_PNFS */ 3619cf514ccSChristoph Hellwig 3629a74af21SBoaz Harrosh #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ 3639a74af21SBoaz Harrosh NFSD4_SUPPORTED_ATTRS_WORD0 3649a74af21SBoaz Harrosh 3659a74af21SBoaz Harrosh #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ 3669cf514ccSChristoph Hellwig (NFSD4_SUPPORTED_ATTRS_WORD1 | PNFSD_SUPPORTED_ATTRS_WORD1) 3679a74af21SBoaz Harrosh 3689a74af21SBoaz Harrosh #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ 3699cf514ccSChristoph Hellwig (NFSD4_SUPPORTED_ATTRS_WORD2 | PNFSD_SUPPORTED_ATTRS_WORD2 | \ 3709cf514ccSChristoph Hellwig FATTR4_WORD2_SUPPATTR_EXCLCREAT) 3719a74af21SBoaz Harrosh 3729cf514ccSChristoph Hellwig /* 4.2 */ 37318032ca0SDavid Quigley #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 3746d0ba043SChristoph Hellwig #define NFSD4_2_SECURITY_ATTRS FATTR4_WORD2_SECURITY_LABEL 37518032ca0SDavid Quigley #else 3766d0ba043SChristoph Hellwig #define NFSD4_2_SECURITY_ATTRS 0 37718032ca0SDavid Quigley #endif 37818032ca0SDavid Quigley 3796d0ba043SChristoph Hellwig #define NFSD4_2_SUPPORTED_ATTRS_WORD2 \ 3806d0ba043SChristoph Hellwig (NFSD4_1_SUPPORTED_ATTRS_WORD2 | \ 381a8585763SJ. Bruce Fields FATTR4_WORD2_CHANGE_ATTR_TYPE | \ 38247057abdSAndreas Gruenbacher FATTR4_WORD2_MODE_UMASK | \ 3836d0ba043SChristoph Hellwig NFSD4_2_SECURITY_ATTRS) 3846d0ba043SChristoph Hellwig 3855cf23dbbSJ. Bruce Fields extern const u32 nfsd_suppattrs[3][3]; 386916d2d84SJ. Bruce Fields 3875cf23dbbSJ. Bruce Fields static inline bool bmval_is_subset(const u32 *bm1, const u32 *bm2) 3889a74af21SBoaz Harrosh { 389916d2d84SJ. Bruce Fields return !((bm1[0] & ~bm2[0]) || 390916d2d84SJ. Bruce Fields (bm1[1] & ~bm2[1]) || 391916d2d84SJ. Bruce Fields (bm1[2] & ~bm2[2])); 3929a74af21SBoaz Harrosh } 3939a74af21SBoaz Harrosh 3945cf23dbbSJ. Bruce Fields static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval) 3959a74af21SBoaz Harrosh { 396916d2d84SJ. Bruce Fields return bmval_is_subset(bmval, nfsd_suppattrs[minorversion]); 3979a74af21SBoaz Harrosh } 3989a74af21SBoaz Harrosh 3999a74af21SBoaz Harrosh /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ 4009a74af21SBoaz Harrosh #define NFSD_WRITEONLY_ATTRS_WORD1 \ 4019a74af21SBoaz Harrosh (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) 4029a74af21SBoaz Harrosh 403e864c189SJ. Bruce Fields /* 404e864c189SJ. Bruce Fields * These are the only attrs allowed in CREATE/OPEN/SETATTR. Don't add 405e864c189SJ. Bruce Fields * a writeable attribute here without also adding code to parse it to 406e864c189SJ. Bruce Fields * nfsd4_decode_fattr(). 407e864c189SJ. Bruce Fields */ 4089a74af21SBoaz Harrosh #define NFSD_WRITEABLE_ATTRS_WORD0 \ 4099a74af21SBoaz Harrosh (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) 4109a74af21SBoaz Harrosh #define NFSD_WRITEABLE_ATTRS_WORD1 \ 4119a74af21SBoaz Harrosh (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ 4129a74af21SBoaz Harrosh | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) 41318032ca0SDavid Quigley #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 41447057abdSAndreas Gruenbacher #define MAYBE_FATTR4_WORD2_SECURITY_LABEL \ 41547057abdSAndreas Gruenbacher FATTR4_WORD2_SECURITY_LABEL 41618032ca0SDavid Quigley #else 41747057abdSAndreas Gruenbacher #define MAYBE_FATTR4_WORD2_SECURITY_LABEL 0 41818032ca0SDavid Quigley #endif 41947057abdSAndreas Gruenbacher #define NFSD_WRITEABLE_ATTRS_WORD2 \ 42047057abdSAndreas Gruenbacher (FATTR4_WORD2_MODE_UMASK \ 42147057abdSAndreas Gruenbacher | MAYBE_FATTR4_WORD2_SECURITY_LABEL) 4229a74af21SBoaz Harrosh 4239a74af21SBoaz Harrosh #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ 4249a74af21SBoaz Harrosh NFSD_WRITEABLE_ATTRS_WORD0 4259a74af21SBoaz Harrosh /* 4269a74af21SBoaz Harrosh * we currently store the exclusive create verifier in the v_{a,m}time 4279a74af21SBoaz Harrosh * attributes so the client can't set these at create time using EXCLUSIVE4_1 4289a74af21SBoaz Harrosh */ 4299a74af21SBoaz Harrosh #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ 4309a74af21SBoaz Harrosh (NFSD_WRITEABLE_ATTRS_WORD1 & \ 4319a74af21SBoaz Harrosh ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) 4329a74af21SBoaz Harrosh #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ 4339a74af21SBoaz Harrosh NFSD_WRITEABLE_ATTRS_WORD2 4349a74af21SBoaz Harrosh 43511fcee02STrond Myklebust extern int nfsd4_is_junction(struct dentry *dentry); 436797a9d79SJeff Layton extern int register_cld_notifier(void); 437797a9d79SJeff Layton extern void unregister_cld_notifier(void); 438797a9d79SJeff Layton #else /* CONFIG_NFSD_V4 */ 43911fcee02STrond Myklebust static inline int nfsd4_is_junction(struct dentry *dentry) 44011fcee02STrond Myklebust { 44111fcee02STrond Myklebust return 0; 44211fcee02STrond Myklebust } 44311fcee02STrond Myklebust 444797a9d79SJeff Layton #define register_cld_notifier() 0 445797a9d79SJeff Layton #define unregister_cld_notifier() do { } while(0) 446797a9d79SJeff Layton 4479a74af21SBoaz Harrosh #endif /* CONFIG_NFSD_V4 */ 4489a74af21SBoaz Harrosh 4499a74af21SBoaz Harrosh #endif /* LINUX_NFSD_NFSD_H */ 450