RFC 7863
Network File System (NFS) Version 4 Minor Version 2 External Data Representation Standard (XDR) Description
Pages: 87
Proposed Standard
Proposed Standard
Part 3 of 4 – Pages 39 to 59
/// union createhow4 switch (createmode4 mode) {
/// case UNCHECKED4:
/// case GUARDED4:
/// fattr4 createattrs;
/// case EXCLUSIVE4:
/// verifier4 createverf;
/// case EXCLUSIVE4_1:
/// creatverfattr ch_createboth;
/// };
///
/// enum opentype4 {
/// OPEN4_NOCREATE = 0,
/// OPEN4_CREATE = 1
/// };
///
/// union openflag4 switch (opentype4 opentype) {
/// case OPEN4_CREATE:
/// createhow4 how;
/// default:
/// void;
/// };
///
/// /* Next definitions used for OPEN delegation */
/// enum limit_by4 {
/// NFS_LIMIT_SIZE = 1,
/// NFS_LIMIT_BLOCKS = 2
/// /* Others as needed */
/// };
///
/// struct nfs_modified_limit4 {
/// uint32_t num_blocks;
/// uint32_t bytes_per_block;
/// };
///
/// union nfs_space_limit4 switch (limit_by4 limitby) {
/// /* Limit specified as file size */
/// case NFS_LIMIT_SIZE:
/// uint64_t filesize;
/// /* Limit specified by number of blocks */
/// case NFS_LIMIT_BLOCKS:
/// nfs_modified_limit4 mod_blocks;
/// };
///
/// /*
/// * Share Access and Deny constants for open argument
/// */
/// const OPEN4_SHARE_ACCESS_READ = 0x00000001;
/// const OPEN4_SHARE_ACCESS_WRITE = 0x00000002;
/// const OPEN4_SHARE_ACCESS_BOTH = 0x00000003;
///
/// const OPEN4_SHARE_DENY_NONE = 0x00000000;
/// const OPEN4_SHARE_DENY_READ = 0x00000001;
/// const OPEN4_SHARE_DENY_WRITE = 0x00000002;
/// const OPEN4_SHARE_DENY_BOTH = 0x00000003;
///
///
/// /* New flags for share_access field of OPEN4args */
/// const OPEN4_SHARE_ACCESS_WANT_DELEG_MASK = 0xFF00;
/// const OPEN4_SHARE_ACCESS_WANT_NO_PREFERENCE = 0x0000;
/// const OPEN4_SHARE_ACCESS_WANT_READ_DELEG = 0x0100;
/// const OPEN4_SHARE_ACCESS_WANT_WRITE_DELEG = 0x0200;
/// const OPEN4_SHARE_ACCESS_WANT_ANY_DELEG = 0x0300;
/// const OPEN4_SHARE_ACCESS_WANT_NO_DELEG = 0x0400;
/// const OPEN4_SHARE_ACCESS_WANT_CANCEL = 0x0500;
///
/// const
/// OPEN4_SHARE_ACCESS_WANT_SIGNAL_DELEG_WHEN_RESRC_AVAIL
/// = 0x10000;
///
/// const
/// OPEN4_SHARE_ACCESS_WANT_PUSH_DELEG_WHEN_UNCONTENDED
/// = 0x20000;
///
/// enum open_delegation_type4 {
/// OPEN_DELEGATE_NONE = 0,
/// OPEN_DELEGATE_READ = 1,
/// OPEN_DELEGATE_WRITE = 2,
/// OPEN_DELEGATE_NONE_EXT = 3 /* New to NFSv4.1 */
/// };
///
/// enum open_claim_type4 {
/// /*
/// * Not a reclaim
/// */
/// CLAIM_NULL = 0,
///
/// CLAIM_PREVIOUS = 1,
/// CLAIM_DELEGATE_CUR = 2,
/// CLAIM_DELEGATE_PREV = 3,
///
/// /*
/// * Not a reclaim
/// *
/// * Like CLAIM_NULL, but object identified
/// * by the current filehandle
/// */
/// CLAIM_FH = 4, /* New to NFSv4.1 */
///
/// /*
/// * Like CLAIM_DELEGATE_CUR, but object identified
/// * by current filehandle
/// */
/// CLAIM_DELEG_CUR_FH = 5, /* New to NFSv4.1 */
///
/// /*
/// * Like CLAIM_DELEGATE_PREV, but object identified
/// * by current filehandle
/// */
/// CLAIM_DELEG_PREV_FH = 6 /* New to NFSv4.1 */
/// };
///
/// struct open_claim_delegate_cur4 {
/// stateid4 delegate_stateid;
/// component4 file;
/// };
///
/// union open_claim4 switch (open_claim_type4 claim) {
/// /*
/// * No special rights to file.
/// * Ordinary OPEN of the specified file.
/// */
/// case CLAIM_NULL:
/// /* CURRENT_FH: directory */
/// component4 file;
/// /* /// * Right to the file established by an /// * open previous to server reboot. File /// * identified by filehandle obtained at /// * that time rather than by name. /// */ /// case CLAIM_PREVIOUS: /// /* CURRENT_FH: file being reclaimed */ /// open_delegation_type4 delegate_type; /// /// /* /// * Right to file based on a delegation /// * granted by the server. File is /// * specified by name. /// */ /// case CLAIM_DELEGATE_CUR: /// /* CURRENT_FH: directory */ /// open_claim_delegate_cur4 delegate_cur_info; /// /// /* /// * Right to file based on a delegation /// * granted to a previous boot instance /// * of the client. File is specified by name. /// */ /// case CLAIM_DELEGATE_PREV: /// /* CURRENT_FH: directory */ /// component4 file_delegate_prev; /// /// /* /// * Like CLAIM_NULL. No special rights /// * to file. Ordinary OPEN of the /// * specified file by current filehandle. /// */ /// case CLAIM_FH: /* New to NFSv4.1 */ /// /* CURRENT_FH: regular file to open */ /// void; /// /// /* /// * Like CLAIM_DELEGATE_PREV. Right to file based on a /// * delegation granted to a previous boot /// * instance of the client. File is identified /// * by filehandle. /// */ /// case CLAIM_DELEG_PREV_FH: /* New to NFSv4.1 */ /// /* CURRENT_FH: file being opened */ /// void; ///
/// /*
/// * Like CLAIM_DELEGATE_CUR. Right to file based on
/// * a delegation granted by the server.
/// * File is identified by filehandle.
/// */
/// case CLAIM_DELEG_CUR_FH: /* New to NFSv4.1 */
/// /* CURRENT_FH: file being opened */
/// stateid4 oc_delegate_stateid;
///
/// };
///
/// /*
/// * OPEN: Open a file, potentially receiving an open delegation.
/// */
/// struct OPEN4args {
/// seqid4 seqid;
/// uint32_t share_access;
/// uint32_t share_deny;
/// open_owner4 owner;
/// openflag4 openhow;
/// open_claim4 claim;
/// };
///
/// struct open_read_delegation4 {
/// stateid4 stateid; /* Stateid for delegation */
/// bool recall; /* Pre-recalled flag for
/// delegations obtained
/// by reclaim (CLAIM_PREVIOUS) */
///
/// nfsace4 permissions; /* Defines users who don't
/// need an ACCESS call to
/// open for read */
/// };
///
/// struct open_write_delegation4 {
/// stateid4 stateid; /* Stateid for delegation */
/// bool recall; /* Pre-recalled flag for
/// delegations obtained
/// by reclaim
/// (CLAIM_PREVIOUS) */
///
/// nfs_space_limit4
/// space_limit; /* Defines condition that
/// the client must check to
/// determine whether the
/// file needs to be flushed
/// to the server on close */
///
/// nfsace4 permissions; /* Defines users who don't
/// need an ACCESS call as
/// part of a delegated
/// open */
/// };
///
///
/// enum why_no_delegation4 { /* New to NFSv4.1 */
/// WND4_NOT_WANTED = 0,
/// WND4_CONTENTION = 1,
/// WND4_RESOURCE = 2,
/// WND4_NOT_SUPP_FTYPE = 3,
/// WND4_WRITE_DELEG_NOT_SUPP_FTYPE = 4,
/// WND4_NOT_SUPP_UPGRADE = 5,
/// WND4_NOT_SUPP_DOWNGRADE = 6,
/// WND4_CANCELLED = 7,
/// WND4_IS_DIR = 8
/// };
///
/// union open_none_delegation4 /* New to NFSv4.1 */
/// switch (why_no_delegation4 ond_why) {
/// case WND4_CONTENTION:
/// bool ond_server_will_push_deleg;
/// case WND4_RESOURCE:
/// bool ond_server_will_signal_avail;
/// default:
/// void;
/// };
///
/// union open_delegation4
/// switch (open_delegation_type4 delegation_type) {
/// case OPEN_DELEGATE_NONE:
/// void;
/// case OPEN_DELEGATE_READ:
/// open_read_delegation4 read;
/// case OPEN_DELEGATE_WRITE:
/// open_write_delegation4 write;
/// case OPEN_DELEGATE_NONE_EXT: /* New to NFSv4.1 */
/// open_none_delegation4 od_whynone;
/// };
///
/// /*
/// * Result flags
/// */
///
/// /* Client must confirm open. */
/// const OPEN4_RESULT_CONFIRM = 0x00000002;
/// /* Type of file-locking behavior at the server */
/// const OPEN4_RESULT_LOCKTYPE_POSIX = 0x00000004;
/// /* Server will preserve file if removed while open. */
/// const OPEN4_RESULT_PRESERVE_UNLINKED = 0x00000008;
///
/// /*
/// * Server may use CB_NOTIFY_LOCK on locks
/// * derived from this open.
/// */
/// const OPEN4_RESULT_MAY_NOTIFY_LOCK = 0x00000020;
///
/// struct OPEN4resok {
/// stateid4 stateid; /* Stateid for open */
/// change_info4 cinfo; /* Directory change info */
/// uint32_t rflags; /* Result flags */
/// bitmap4 attrset; /* Attribute set for create */
/// open_delegation4 delegation; /* Info on any open
/// delegation */
/// };
///
/// union OPEN4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// /* New CURRENT_FH: opened file */
/// OPEN4resok resok4;
/// default:
/// void;
/// };
///
/// struct OPENATTR4args {
/// /* CURRENT_FH: object */
/// bool createdir;
/// };
///
/// struct OPENATTR4res {
/// /*
/// * If status is NFS4_OK,
/// * New CURRENT_FH: named attribute
/// * directory
/// */
/// nfsstat4 status;
/// };
///
/// /* Obsolete in NFSv4.1 */
/// struct OPEN_CONFIRM4args {
/// /* CURRENT_FH: opened file */
/// stateid4 open_stateid;
/// seqid4 seqid;
/// };
///
/// struct OPEN_CONFIRM4resok {
/// stateid4 open_stateid;
/// };
///
/// union OPEN_CONFIRM4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// OPEN_CONFIRM4resok resok4;
/// default:
/// void;
/// };
///
/// struct OPEN_DOWNGRADE4args {
/// /* CURRENT_FH: opened file */
/// stateid4 open_stateid;
/// seqid4 seqid;
/// uint32_t share_access;
/// uint32_t share_deny;
/// };
///
/// struct OPEN_DOWNGRADE4resok {
/// stateid4 open_stateid;
/// };
///
/// union OPEN_DOWNGRADE4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// OPEN_DOWNGRADE4resok resok4;
/// default:
/// void;
/// };
///
/// struct PUTFH4args {
/// nfs_fh4 object;
/// };
///
/// struct PUTFH4res {
/// /*
/// * If status is NFS4_OK,
/// * New CURRENT_FH: argument to PUTFH
/// */
/// nfsstat4 status;
/// };
///
/// struct PUTPUBFH4res {
/// /*
/// * If status is NFS4_OK,
/// * New CURRENT_FH: public fh
/// */
/// nfsstat4 status;
/// };
///
/// struct PUTROOTFH4res {
/// /*
/// * If status is NFS4_OK,
/// * New CURRENT_FH: root fh
/// */
/// nfsstat4 status;
/// };
///
/// struct READ4args {
/// /* CURRENT_FH: file */
/// stateid4 stateid;
/// offset4 offset;
/// count4 count;
/// };
///
/// struct READ4resok {
/// bool eof;
/// opaque data<>;
/// };
///
/// union READ4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// READ4resok resok4;
/// default:
/// void;
/// };
///
/// struct READDIR4args {
/// /* CURRENT_FH: directory */
/// nfs_cookie4 cookie;
/// verifier4 cookieverf;
/// count4 dircount;
/// count4 maxcount;
/// bitmap4 attr_request;
/// };
///
/// struct entry4 {
/// nfs_cookie4 cookie;
/// component4 name;
/// fattr4 attrs;
/// entry4 *nextentry;
/// };
///
/// struct dirlist4 {
/// entry4 *entries;
/// bool eof;
/// };
///
/// struct READDIR4resok {
/// verifier4 cookieverf;
/// dirlist4 reply;
/// };
///
///
/// union READDIR4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// READDIR4resok resok4;
/// default:
/// void;
/// };
///
///
/// struct READLINK4resok {
/// linktext4 link;
/// };
///
/// union READLINK4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// READLINK4resok resok4;
/// default:
/// void;
/// };
///
/// struct REMOVE4args {
/// /* CURRENT_FH: directory */
/// component4 target;
/// };
///
/// struct REMOVE4resok {
/// change_info4 cinfo;
/// };
///
/// union REMOVE4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// REMOVE4resok resok4;
/// default:
/// void;
/// };
///
/// struct RENAME4args {
/// /* SAVED_FH: source directory */
/// component4 oldname;
/// /* CURRENT_FH: target directory */
/// component4 newname;
/// };
///
/// struct RENAME4resok {
/// change_info4 source_cinfo;
/// change_info4 target_cinfo;
/// };
///
/// union RENAME4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// RENAME4resok resok4;
/// default:
/// void;
/// };
///
/// /* Obsolete in NFSv4.1 */
/// struct RENEW4args {
/// clientid4 clientid;
/// };
///
/// struct RENEW4res {
/// nfsstat4 status;
/// };
///
/// struct RESTOREFH4res {
/// /*
/// * If status is NFS4_OK,
/// * New CURRENT_FH: value of saved fh
/// */
/// nfsstat4 status;
/// };
///
/// struct SAVEFH4res {
/// /*
/// * If status is NFS4_OK,
/// * New SAVED_FH: value of current fh
/// */
/// nfsstat4 status;
/// };
///
/// struct SECINFO4args {
/// /* CURRENT_FH: directory */
/// component4 name;
/// };
///
/// /*
/// * From RFC 2203
/// */
/// enum rpc_gss_svc_t {
/// RPC_GSS_SVC_NONE = 1,
/// RPC_GSS_SVC_INTEGRITY = 2,
/// RPC_GSS_SVC_PRIVACY = 3
/// };
///
/// struct rpcsec_gss_info {
/// sec_oid4 oid;
/// qop4 qop;
/// rpc_gss_svc_t service;
/// };
///
/// /* RPCSEC_GSS has a value of "6". See RFC 2203. */
/// union secinfo4 switch (uint32_t flavor) {
/// case RPCSEC_GSS:
/// rpcsec_gss_info flavor_info;
/// default:
/// void;
/// };
///
/// typedef secinfo4 SECINFO4resok<>;
///
/// union SECINFO4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// /* CURRENTFH: consumed */
/// SECINFO4resok resok4;
/// default:
/// void;
/// };
///
/// struct SETATTR4args {
/// /* CURRENT_FH: target object */
/// stateid4 stateid;
/// fattr4 obj_attributes;
/// };
///
/// struct SETATTR4res {
/// nfsstat4 status;
/// bitmap4 attrsset;
/// };
///
/// /* Obsolete in NFSv4.1 */
/// struct SETCLIENTID4args {
/// nfs_client_id4 client;
/// cb_client4 callback;
/// uint32_t callback_ident;
/// };
///
/// struct SETCLIENTID4resok {
/// clientid4 clientid;
/// verifier4 setclientid_confirm;
/// };
///
/// union SETCLIENTID4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// SETCLIENTID4resok resok4;
/// case NFS4ERR_CLID_INUSE:
/// clientaddr4 client_using;
/// default:
/// void;
/// };
///
/// /* Obsolete in NFSv4.1 */
/// struct SETCLIENTID_CONFIRM4args {
/// clientid4 clientid;
/// verifier4 setclientid_confirm;
/// };
///
/// struct SETCLIENTID_CONFIRM4res {
/// nfsstat4 status;
/// };
///
/// struct VERIFY4args {
/// /* CURRENT_FH: object */
/// fattr4 obj_attributes;
/// };
///
/// struct VERIFY4res {
/// nfsstat4 status;
/// };
///
/// struct WRITE4args {
/// /* CURRENT_FH: file */
/// stateid4 stateid;
/// offset4 offset;
/// stable_how4 stable;
/// opaque data<>;
/// };
///
/// struct WRITE4resok {
/// count4 count;
/// stable_how4 committed;
/// verifier4 writeverf;
/// };
///
/// union WRITE4res switch (nfsstat4 status) {
/// case NFS4_OK:
/// WRITE4resok resok4;
/// default:
/// void;
/// };
///
/// /* Obsolete in NFSv4.1 */
/// struct RELEASE_LOCKOWNER4args {
/// lock_owner4 lock_owner;
/// };
///
/// struct RELEASE_LOCKOWNER4res {
/// nfsstat4 status;
/// };
///
/// struct ILLEGAL4res {
/// nfsstat4 status;
/// };
///
/// typedef opaque gsshandle4_t<>;
///
/// struct gss_cb_handles4 {
/// rpc_gss_svc_t gcbp_service; /* RFC 2203 */
/// gsshandle4_t gcbp_handle_from_server;
/// gsshandle4_t gcbp_handle_from_client;
/// };
///
/// union callback_sec_parms4 switch (uint32_t cb_secflavor) {
/// case AUTH_NONE:
/// void;
/// case AUTH_SYS:
/// authsys_parms cbsp_sys_cred; /* RFC 5531 */
/// case RPCSEC_GSS:
/// gss_cb_handles4 cbsp_gss_handles;
/// };
///
/// struct BACKCHANNEL_CTL4args {
/// uint32_t bca_cb_program;
/// callback_sec_parms4 bca_sec_parms<>;
/// };
///
/// struct BACKCHANNEL_CTL4res {
/// nfsstat4 bcr_status;
/// };
///
/// enum channel_dir_from_client4 {
/// CDFC4_FORE = 0x1,
/// CDFC4_BACK = 0x2,
/// CDFC4_FORE_OR_BOTH = 0x3,
/// CDFC4_BACK_OR_BOTH = 0x7
/// };
///
/// struct BIND_CONN_TO_SESSION4args {
/// sessionid4 bctsa_sessid;
///
/// channel_dir_from_client4
/// bctsa_dir;
///
/// bool bctsa_use_conn_in_rdma_mode;
/// };
///
/// enum channel_dir_from_server4 {
/// CDFS4_FORE = 0x1,
/// CDFS4_BACK = 0x2,
/// CDFS4_BOTH = 0x3
/// };
///
/// struct BIND_CONN_TO_SESSION4resok {
/// sessionid4 bctsr_sessid;
///
/// channel_dir_from_server4
/// bctsr_dir;
///
/// bool bctsr_use_conn_in_rdma_mode;
/// };
///
/// union BIND_CONN_TO_SESSION4res
/// switch (nfsstat4 bctsr_status) {
/// case NFS4_OK:
/// BIND_CONN_TO_SESSION4resok bctsr_resok4;
/// default:
/// void;
/// };
///
/// const EXCHGID4_FLAG_SUPP_MOVED_REFER = 0x00000001;
/// const EXCHGID4_FLAG_SUPP_MOVED_MIGR = 0x00000002;
/// const EXCHGID4_FLAG_SUPP_FENCE_OPS = 0x00000004;
///
/// const EXCHGID4_FLAG_BIND_PRINC_STATEID = 0x00000100;
///
/// const EXCHGID4_FLAG_USE_NON_PNFS = 0x00010000;
/// const EXCHGID4_FLAG_USE_PNFS_MDS = 0x00020000;
/// const EXCHGID4_FLAG_USE_PNFS_DS = 0x00040000;
///
/// const EXCHGID4_FLAG_MASK_PNFS = 0x00070000;
///
/// const EXCHGID4_FLAG_UPD_CONFIRMED_REC_A = 0x40000000;
/// const EXCHGID4_FLAG_CONFIRMED_R = 0x80000000;
///
/// struct state_protect_ops4 {
/// bitmap4 spo_must_enforce;
/// bitmap4 spo_must_allow;
/// };
///
/// struct ssv_sp_parms4 {
/// state_protect_ops4 ssp_ops;
/// sec_oid4 ssp_hash_algs<>;
/// sec_oid4 ssp_encr_algs<>;
/// uint32_t ssp_window;
/// uint32_t ssp_num_gss_handles;
/// };
///
/// enum state_protect_how4 {
/// SP4_NONE = 0,
/// SP4_MACH_CRED = 1,
/// SP4_SSV = 2
/// };
///
/// union state_protect4_a switch (state_protect_how4 spa_how) {
/// case SP4_NONE:
/// void;
/// case SP4_MACH_CRED:
/// state_protect_ops4 spa_mach_ops;
/// case SP4_SSV:
/// ssv_sp_parms4 spa_ssv_parms;
/// };
///
/// struct EXCHANGE_ID4args {
/// client_owner4 eia_clientowner;
/// uint32_t eia_flags;
/// state_protect4_a eia_state_protect;
/// nfs_impl_id4 eia_client_impl_id<1>;
/// };
///
/// struct ssv_prot_info4 {
/// state_protect_ops4 spi_ops;
/// uint32_t spi_hash_alg;
/// uint32_t spi_encr_alg;
/// uint32_t spi_ssv_len;
/// uint32_t spi_window;
/// gsshandle4_t spi_handles<>;
/// };
///
/// union state_protect4_r switch (state_protect_how4 spr_how) {
/// case SP4_NONE:
/// void;
/// case SP4_MACH_CRED:
/// state_protect_ops4 spr_mach_ops;
/// case SP4_SSV:
/// ssv_prot_info4 spr_ssv_info;
/// };
///
/// struct EXCHANGE_ID4resok {
/// clientid4 eir_clientid;
/// sequenceid4 eir_sequenceid;
/// uint32_t eir_flags;
/// state_protect4_r eir_state_protect;
/// server_owner4 eir_server_owner;
/// opaque eir_server_scope<NFS4_OPAQUE_LIMIT>;
/// nfs_impl_id4 eir_server_impl_id<1>;
/// };
///
/// union EXCHANGE_ID4res switch (nfsstat4 eir_status) {
/// case NFS4_OK:
/// EXCHANGE_ID4resok eir_resok4;
///
/// default:
/// void;
/// };
///
/// struct channel_attrs4 {
/// count4 ca_headerpadsize;
/// count4 ca_maxrequestsize;
/// count4 ca_maxresponsesize;
/// count4 ca_maxresponsesize_cached;
/// count4 ca_maxoperations;
/// count4 ca_maxrequests;
/// uint32_t ca_rdma_ird<1>;
/// };
///
/// const CREATE_SESSION4_FLAG_PERSIST = 0x00000001;
/// const CREATE_SESSION4_FLAG_CONN_BACK_CHAN = 0x00000002;
/// const CREATE_SESSION4_FLAG_CONN_RDMA = 0x00000004;
///
/// struct CREATE_SESSION4args {
/// clientid4 csa_clientid;
/// sequenceid4 csa_sequence;
///
/// uint32_t csa_flags;
///
/// channel_attrs4 csa_fore_chan_attrs;
/// channel_attrs4 csa_back_chan_attrs;
///
/// uint32_t csa_cb_program;
/// callback_sec_parms4 csa_sec_parms<>;
/// };
///
/// struct CREATE_SESSION4resok {
/// sessionid4 csr_sessionid;
/// sequenceid4 csr_sequence;
///
/// uint32_t csr_flags;
///
/// channel_attrs4 csr_fore_chan_attrs;
/// channel_attrs4 csr_back_chan_attrs;
/// };
///
/// union CREATE_SESSION4res switch (nfsstat4 csr_status) {
/// case NFS4_OK:
/// CREATE_SESSION4resok csr_resok4;
/// default:
/// void;
/// };
///
/// struct DESTROY_SESSION4args {
/// sessionid4 dsa_sessionid;
/// };
///
/// struct DESTROY_SESSION4res {
/// nfsstat4 dsr_status;
/// };
///
/// struct FREE_STATEID4args {
/// stateid4 fsa_stateid;
/// };
///
/// struct FREE_STATEID4res {
/// nfsstat4 fsr_status;
/// };
///
///
/// typedef nfstime4 attr_notice4;
///
/// struct GET_DIR_DELEGATION4args {
/// /* CURRENT_FH: delegated directory */
/// bool gdda_signal_deleg_avail;
/// bitmap4 gdda_notification_types;
/// attr_notice4 gdda_child_attr_delay;
/// attr_notice4 gdda_dir_attr_delay;
/// bitmap4 gdda_child_attributes;
/// bitmap4 gdda_dir_attributes;
/// };
/// struct GET_DIR_DELEGATION4resok {
/// verifier4 gddr_cookieverf;
/// /* Stateid for get_dir_delegation */
/// stateid4 gddr_stateid;
/// /* Which notifications can the server support? */
/// bitmap4 gddr_notification;
/// bitmap4 gddr_child_attributes;
/// bitmap4 gddr_dir_attributes;
/// };
///
/// enum gddrnf4_status {
/// GDD4_OK = 0,
/// GDD4_UNAVAIL = 1
/// };
///
/// union GET_DIR_DELEGATION4res_non_fatal
/// switch (gddrnf4_status gddrnf_status) {
/// case GDD4_OK:
/// GET_DIR_DELEGATION4resok gddrnf_resok4;
/// case GDD4_UNAVAIL:
/// bool gddrnf_will_signal_deleg_avail;
/// };
///
/// union GET_DIR_DELEGATION4res
/// switch (nfsstat4 gddr_status) {
/// case NFS4_OK:
/// GET_DIR_DELEGATION4res_non_fatal gddr_res_non_fatal4;
/// default:
/// void;
/// };
///
/// struct GETDEVICEINFO4args {
/// deviceid4 gdia_device_id;
/// layouttype4 gdia_layout_type;
/// count4 gdia_maxcount;
/// bitmap4 gdia_notify_types;
/// };
///
/// struct GETDEVICEINFO4resok {
/// device_addr4 gdir_device_addr;
/// bitmap4 gdir_notification;
/// };
///
/// union GETDEVICEINFO4res switch (nfsstat4 gdir_status) {
/// case NFS4_OK:
/// GETDEVICEINFO4resok gdir_resok4;
/// case NFS4ERR_TOOSMALL:
/// count4 gdir_mincount;
/// default:
/// void;
/// };
///
/// struct GETDEVICELIST4args {
/// /* CURRENT_FH: object belonging to the file system */
/// layouttype4 gdla_layout_type;
///
/// /* Number of device IDs to return */
/// count4 gdla_maxdevices;
///
/// nfs_cookie4 gdla_cookie;
/// verifier4 gdla_cookieverf;
/// };
///
/// struct GETDEVICELIST4resok {
/// nfs_cookie4 gdlr_cookie;
/// verifier4 gdlr_cookieverf;
/// deviceid4 gdlr_deviceid_list<>;
/// bool gdlr_eof;
/// };
///
/// union GETDEVICELIST4res switch (nfsstat4 gdlr_status) {
/// case NFS4_OK:
/// GETDEVICELIST4resok gdlr_resok4;
/// default:
/// void;
/// };
///
/// union newtime4 switch (bool nt_timechanged) {
/// case TRUE:
/// nfstime4 nt_time;
/// case FALSE:
/// void;
/// };
///
/// union newoffset4 switch (bool no_newoffset) {
/// case TRUE:
/// offset4 no_offset;
/// case FALSE:
/// void;
/// };
///
(next page on part 4)