| /* |
| * Hodge-podge collection of knfsd-related stuff. |
| * I will sort this out later. |
| * |
| * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
| */ |
| |
| #ifndef LINUX_NFSD_NFSD_H |
| #define LINUX_NFSD_NFSD_H |
| |
| #include <linux/types.h> |
| #include <linux/mount.h> |
| |
| #include <linux/nfs.h> |
| #include <linux/nfs2.h> |
| #include <linux/nfs3.h> |
| #include <linux/nfs4.h> |
| #include <linux/sunrpc/msg_prot.h> |
| |
| #include <linux/nfsd/debug.h> |
| #include <linux/nfsd/export.h> |
| #include <linux/nfsd/stats.h> |
| |
| /* |
| * nfsd version |
| */ |
| #define NFSD_SUPPORTED_MINOR_VERSION 1 |
| /* |
| * Maximum blocksizes supported by daemon under various circumstances. |
| */ |
| #define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD |
| /* NFSv2 is limited by the protocol specification, see RFC 1094 */ |
| #define NFSSVC_MAXBLKSIZE_V2 (8*1024) |
| |
| |
| /* |
| * Largest number of bytes we need to allocate for an NFS |
| * call or reply. Used to control buffer sizes. We use |
| * the length of v3 WRITE, READDIR and READDIR replies |
| * which are an RPC header, up to 26 XDR units of reply |
| * data, and some page data. |
| * |
| * Note that accuracy here doesn't matter too much as the |
| * size is rounded up to a page size when allocating space. |
| */ |
| #define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE) |
| |
| struct readdir_cd { |
| __be32 err; /* 0, nfserr, or nfserr_eof */ |
| }; |
| |
| |
| extern struct svc_program nfsd_program; |
| extern struct svc_version nfsd_version2, nfsd_version3, |
| nfsd_version4; |
| extern u32 nfsd_supported_minorversion; |
| extern struct mutex nfsd_mutex; |
| extern struct svc_serv *nfsd_serv; |
| extern spinlock_t nfsd_drc_lock; |
| extern unsigned int nfsd_drc_max_mem; |
| extern unsigned int nfsd_drc_mem_used; |
| |
| extern const struct seq_operations nfs_exports_op; |
| |
| /* |
| * Function prototypes. |
| */ |
| int nfsd_svc(int nrservs, struct net *net); |
| int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp); |
| |
| int nfsd_nrthreads(void); |
| int nfsd_nrpools(void); |
| int nfsd_get_nrthreads(int n, int *); |
| int nfsd_set_nrthreads(int n, int *, struct net *); |
| int nfsd_pool_stats_open(struct inode *, struct file *); |
| int nfsd_pool_stats_release(struct inode *, struct file *); |
| |
| static inline void nfsd_destroy(struct net *net) |
| { |
| int destroy = (nfsd_serv->sv_nrthreads == 1); |
| |
| if (destroy) |
| svc_shutdown_net(nfsd_serv, net); |
| svc_destroy(nfsd_serv); |
| if (destroy) |
| nfsd_serv = NULL; |
| } |
| |
| #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) |
| #ifdef CONFIG_NFSD_V2_ACL |
| extern struct svc_version nfsd_acl_version2; |
| #else |
| #define nfsd_acl_version2 NULL |
| #endif |
| #ifdef CONFIG_NFSD_V3_ACL |
| extern struct svc_version nfsd_acl_version3; |
| #else |
| #define nfsd_acl_version3 NULL |
| #endif |
| #endif |
| |
| enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL }; |
| int nfsd_vers(int vers, enum vers_op change); |
| int nfsd_minorversion(u32 minorversion, enum vers_op change); |
| void nfsd_reset_versions(void); |
| int nfsd_create_serv(struct net *net); |
| |
| extern int nfsd_max_blksize; |
| |
| static inline int nfsd_v4client(struct svc_rqst *rq) |
| { |
| return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4; |
| } |
| |
| /* |
| * NFSv4 State |
| */ |
| #ifdef CONFIG_NFSD_V4 |
| extern unsigned int max_delegations; |
| void nfs4_state_init(void); |
| int nfsd4_init_slabs(void); |
| void nfsd4_free_slabs(void); |
| int nfs4_state_start(void); |
| int nfs4_state_start_net(struct net *net); |
| void nfs4_state_shutdown(void); |
| void nfs4_state_shutdown_net(struct net *net); |
| void nfs4_reset_lease(time_t leasetime); |
| int nfs4_reset_recoverydir(char *recdir); |
| char * nfs4_recoverydir(void); |
| #else |
| static inline void nfs4_state_init(void) { } |
| static inline int nfsd4_init_slabs(void) { return 0; } |
| static inline void nfsd4_free_slabs(void) { } |
| static inline int nfs4_state_start(void) { return 0; } |
| static inline int nfs4_state_start_net(struct net *net) { return 0; } |
| static inline void nfs4_state_shutdown(void) { } |
| static inline void nfs4_state_shutdown_net(struct net *net) { } |
| static inline void nfs4_reset_lease(time_t leasetime) { } |
| static inline int nfs4_reset_recoverydir(char *recdir) { return 0; } |
| static inline char * nfs4_recoverydir(void) {return NULL; } |
| #endif |
| |
| /* |
| * lockd binding |
| */ |
| void nfsd_lockd_init(void); |
| void nfsd_lockd_shutdown(void); |
| |
| |
| /* |
| * These macros provide pre-xdr'ed values for faster operation. |
| */ |
| #define nfs_ok cpu_to_be32(NFS_OK) |
| #define nfserr_perm cpu_to_be32(NFSERR_PERM) |
| #define nfserr_noent cpu_to_be32(NFSERR_NOENT) |
| #define nfserr_io cpu_to_be32(NFSERR_IO) |
| #define nfserr_nxio cpu_to_be32(NFSERR_NXIO) |
| #define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN) |
| #define nfserr_acces cpu_to_be32(NFSERR_ACCES) |
| #define nfserr_exist cpu_to_be32(NFSERR_EXIST) |
| #define nfserr_xdev cpu_to_be32(NFSERR_XDEV) |
| #define nfserr_nodev cpu_to_be32(NFSERR_NODEV) |
| #define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR) |
| #define nfserr_isdir cpu_to_be32(NFSERR_ISDIR) |
| #define nfserr_inval cpu_to_be32(NFSERR_INVAL) |
| #define nfserr_fbig cpu_to_be32(NFSERR_FBIG) |
| #define nfserr_nospc cpu_to_be32(NFSERR_NOSPC) |
| #define nfserr_rofs cpu_to_be32(NFSERR_ROFS) |
| #define nfserr_mlink cpu_to_be32(NFSERR_MLINK) |
| #define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP) |
| #define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG) |
| #define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY) |
| #define nfserr_dquot cpu_to_be32(NFSERR_DQUOT) |
| #define nfserr_stale cpu_to_be32(NFSERR_STALE) |
| #define nfserr_remote cpu_to_be32(NFSERR_REMOTE) |
| #define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH) |
| #define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE) |
| #define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC) |
| #define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE) |
| #define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP) |
| #define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL) |
| #define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT) |
| #define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE) |
| #define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX) |
| #define nfserr_denied cpu_to_be32(NFSERR_DENIED) |
| #define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK) |
| #define nfserr_expired cpu_to_be32(NFSERR_EXPIRED) |
| #define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE) |
| #define nfserr_same cpu_to_be32(NFSERR_SAME) |
| #define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE) |
| #define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID) |
| #define nfserr_resource cpu_to_be32(NFSERR_RESOURCE) |
| #define nfserr_moved cpu_to_be32(NFSERR_MOVED) |
| #define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE) |
| #define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH) |
| #define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED) |
| #define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID) |
| #define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID) |
| #define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID) |
| #define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID) |
| #define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK) |
| #define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME) |
| #define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE) |
| #define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH) |
| #define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP) |
| #define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR) |
| #define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE) |
| #define nfserr_badowner cpu_to_be32(NFSERR_BADOWNER) |
| #define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD) |
| #define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL) |
| #define nfserr_grace cpu_to_be32(NFSERR_GRACE) |
| #define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE) |
| #define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD) |
| #define nfserr_badname cpu_to_be32(NFSERR_BADNAME) |
| #define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN) |
| #define nfserr_locked cpu_to_be32(NFSERR_LOCKED) |
| #define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC) |
| #define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE) |
| #define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT) |
| #define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST) |
| #define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION) |
| #define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT) |
| #define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY) |
| #define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION) |
| #define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED) |
| #define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY) |
| #define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER) |
| #define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE) |
| #define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT) |
| #define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT) |
| #define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE) |
| #define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED) |
| #define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS) |
| #define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG) |
| #define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG) |
| #define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE) |
| #define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP) |
| #define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND) |
| #define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS) |
| #define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION) |
| #define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP) |
| #define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY) |
| #define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE) |
| #define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY) |
| #define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT) |
| #define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION) |
| #define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP) |
| #define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT) |
| #define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP) |
| #define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED) |
| #define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE) |
| #define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL) |
| #define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG) |
| #define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT) |
| #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) |
| |
| /* error codes for internal use */ |
| /* if a request fails due to kmalloc failure, it gets dropped. |
| * Client should resend eventually |
| */ |
| #define nfserr_dropit cpu_to_be32(30000) |
| /* end-of-file indicator in readdir */ |
| #define nfserr_eof cpu_to_be32(30001) |
| /* replay detected */ |
| #define nfserr_replay_me cpu_to_be32(11001) |
| /* nfs41 replay detected */ |
| #define nfserr_replay_cache cpu_to_be32(11002) |
| |
| /* Check for dir entries '.' and '..' */ |
| #define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.')) |
| |
| /* |
| * Time of server startup |
| */ |
| extern struct timeval nfssvc_boot; |
| |
| #ifdef CONFIG_NFSD_V4 |
| |
| /* before processing a COMPOUND operation, we have to check that there |
| * is enough space in the buffer for XDR encode to succeed. otherwise, |
| * we might process an operation with side effects, and be unable to |
| * tell the client that the operation succeeded. |
| * |
| * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space |
| * needed to encode an "ordinary" _successful_ operation. (GETATTR, |
| * READ, READDIR, and READLINK have their own buffer checks.) if we |
| * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. |
| * |
| * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space |
| * needed to encode an operation which has failed with NFS4ERR_RESOURCE. |
| * care is taken to ensure that we never fall below this level for any |
| * reason. |
| */ |
| #define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ |
| #define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */ |
| |
| #define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */ |
| |
| /* |
| * The following attributes are currently not supported by the NFSv4 server: |
| * ARCHIVE (deprecated anyway) |
| * HIDDEN (unlikely to be supported any time soon) |
| * MIMETYPE (unlikely to be supported any time soon) |
| * QUOTA_* (will be supported in a forthcoming patch) |
| * SYSTEM (unlikely to be supported any time soon) |
| * TIME_BACKUP (unlikely to be supported any time soon) |
| * TIME_CREATE (unlikely to be supported any time soon) |
| */ |
| #define NFSD4_SUPPORTED_ATTRS_WORD0 \ |
| (FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \ |
| | FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \ |
| | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \ |
| | FATTR4_WORD0_UNIQUE_HANDLES | FATTR4_WORD0_LEASE_TIME | FATTR4_WORD0_RDATTR_ERROR \ |
| | FATTR4_WORD0_ACLSUPPORT | FATTR4_WORD0_CANSETTIME | FATTR4_WORD0_CASE_INSENSITIVE \ |
| | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED \ |
| | FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FILEID | FATTR4_WORD0_FILES_AVAIL \ |
| | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS \ |
| | FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \ |
| | FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL) |
| |
| #define NFSD4_SUPPORTED_ATTRS_WORD1 \ |
| (FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \ |
| | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \ |
| | FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \ |
| | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS | FATTR4_WORD1_TIME_ACCESS_SET \ |
| | FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \ |
| | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID) |
| |
| #define NFSD4_SUPPORTED_ATTRS_WORD2 0 |
| |
| #define NFSD4_1_SUPPORTED_ATTRS_WORD0 \ |
| NFSD4_SUPPORTED_ATTRS_WORD0 |
| |
| #define NFSD4_1_SUPPORTED_ATTRS_WORD1 \ |
| NFSD4_SUPPORTED_ATTRS_WORD1 |
| |
| #define NFSD4_1_SUPPORTED_ATTRS_WORD2 \ |
| (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT) |
| |
| static inline u32 nfsd_suppattrs0(u32 minorversion) |
| { |
| return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0 |
| : NFSD4_SUPPORTED_ATTRS_WORD0; |
| } |
| |
| static inline u32 nfsd_suppattrs1(u32 minorversion) |
| { |
| return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1 |
| : NFSD4_SUPPORTED_ATTRS_WORD1; |
| } |
| |
| static inline u32 nfsd_suppattrs2(u32 minorversion) |
| { |
| return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2 |
| : NFSD4_SUPPORTED_ATTRS_WORD2; |
| } |
| |
| /* These will return ERR_INVAL if specified in GETATTR or READDIR. */ |
| #define NFSD_WRITEONLY_ATTRS_WORD1 \ |
| (FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) |
| |
| /* These are the only attrs allowed in CREATE/OPEN/SETATTR. */ |
| #define NFSD_WRITEABLE_ATTRS_WORD0 \ |
| (FATTR4_WORD0_SIZE | FATTR4_WORD0_ACL) |
| #define NFSD_WRITEABLE_ATTRS_WORD1 \ |
| (FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \ |
| | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET) |
| #define NFSD_WRITEABLE_ATTRS_WORD2 0 |
| |
| #define NFSD_SUPPATTR_EXCLCREAT_WORD0 \ |
| NFSD_WRITEABLE_ATTRS_WORD0 |
| /* |
| * we currently store the exclusive create verifier in the v_{a,m}time |
| * attributes so the client can't set these at create time using EXCLUSIVE4_1 |
| */ |
| #define NFSD_SUPPATTR_EXCLCREAT_WORD1 \ |
| (NFSD_WRITEABLE_ATTRS_WORD1 & \ |
| ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)) |
| #define NFSD_SUPPATTR_EXCLCREAT_WORD2 \ |
| NFSD_WRITEABLE_ATTRS_WORD2 |
| |
| extern int nfsd4_is_junction(struct dentry *dentry); |
| extern int register_cld_notifier(void); |
| extern void unregister_cld_notifier(void); |
| #else /* CONFIG_NFSD_V4 */ |
| static inline int nfsd4_is_junction(struct dentry *dentry) |
| { |
| return 0; |
| } |
| |
| #define register_cld_notifier() 0 |
| #define unregister_cld_notifier() do { } while(0) |
| |
| #endif /* CONFIG_NFSD_V4 */ |
| |
| #endif /* LINUX_NFSD_NFSD_H */ |