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+Internet Engineering Task Force (IETF) T. Haynes, Ed.
+Request for Comments: 7531 Primary Data
+Category: Standards Track D. Noveck, Ed.
+ISSN: 2070-1721 Dell
+ March 2015
+
+
+ Network File System (NFS) Version 4
+ External Data Representation Standard (XDR) Description
+
+Abstract
+
+ The Network File System (NFS) version 4 protocol is a distributed
+ file system protocol that owes its heritage to NFS protocol version 2
+ (RFC 1094) and version 3 (RFC 1813). Unlike earlier versions, the
+ NFS version 4 protocol supports traditional file access while
+ integrating support for file locking and the MOUNT protocol. In
+ addition, support for strong security (and its negotiation), COMPOUND
+ operations, client caching, and internationalization has been added.
+ Of course, attention has been applied to making NFS version 4 operate
+ well in an Internet environment.
+
+ RFC 7530 formally obsoletes RFC 3530. This document, together with
+ RFC 7530, replaces RFC 3530 as the definition of the NFS version 4
+ protocol.
+
+Status of This Memo
+
+ This is an Internet Standards Track document.
+
+ This document is a product of the Internet Engineering Task Force
+ (IETF). It represents the consensus of the IETF community. It has
+ received public review and has been approved for publication by the
+ Internet Engineering Steering Group (IESG). Further information on
+ Internet Standards is available in Section 2 of RFC 5741.
+
+ Information about the current status of this document, any errata,
+ and how to provide feedback on it may be obtained at
+ http://www.rfc-editor.org/info/rfc7531.
+
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+Haynes & Noveck Standards Track [Page 1]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+Copyright Notice
+
+ Copyright (c) 2015 IETF Trust and the persons identified as the
+ document authors. All rights reserved.
+
+ This document is subject to BCP 78 and the IETF Trust's Legal
+ Provisions Relating to IETF Documents
+ (http://trustee.ietf.org/license-info) in effect on the date of
+ publication of this document. Please review these documents
+ carefully, as they describe your rights and restrictions with respect
+ to this document. Code Components extracted from this document must
+ include Simplified BSD License text as described in Section 4.e of
+ the Trust Legal Provisions and are provided without warranty as
+ described in the Simplified BSD License.
+
+ This document may contain material from IETF Documents or IETF
+ Contributions published or made publicly available before November
+ 10, 2008. The person(s) controlling the copyright in some of this
+ material may not have granted the IETF Trust the right to allow
+ modifications of such material outside the IETF Standards Process.
+ Without obtaining an adequate license from the person(s) controlling
+ the copyright in such materials, this document may not be modified
+ outside the IETF Standards Process, and derivative works of it may
+ not be created outside the IETF Standards Process, except to format
+ it for publication as an RFC or to translate it into languages other
+ than English.
+
+
+
+
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+Haynes & Noveck Standards Track [Page 2]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+Table of Contents
+
+ 1. Introduction ...................................................3
+ 2. XDR Description of NFSv4.0 .....................................3
+ 3. Security Considerations .......................................39
+ 4. Normative References ..........................................39
+ Acknowledgments ..................................................39
+ Authors' Addresses ...............................................39
+
+1. Introduction
+
+ This document contains the External Data Representation (XDR)
+ [RFC4506] description of the NFSv4.0 protocol [RFC7530].
+
+2. XDR Description of NFSv4.0
+
+ The XDR description is provided in this document in a way that makes
+ it simple for the reader to extract it into a form that is ready to
+ compile. The reader can feed this document in the following shell
+ script to produce the machine-readable XDR description of NFSv4.0:
+
+ #!/bin/sh
+ grep "^ *///" | sed 's?^ */// ??' | sed 's?^ *///$??'
+
+ That is, if the above script is stored in a file called "extract.sh",
+ and this document is in a file called "spec.txt", then the reader
+ can do:
+
+ sh extract.sh < spec.txt > nfs4_prot.x
+
+ The effect of the script is to remove leading white space from each
+ line, plus a sentinel sequence of "///".
+
+ The XDR description, with the sentinel sequence, follows:
+
+
+
+
+
+
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+
+Haynes & Noveck Standards Track [Page 3]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// /*
+ /// * This file was machine generated for [RFC7530].
+ /// *
+ /// * Last updated Tue Mar 10 11:51:21 PDT 2015.
+ /// */
+ ///
+ /// /*
+ /// * Copyright (c) 2015 IETF Trust and the persons identified
+ /// * as authors of the code. All rights reserved.
+ /// *
+ /// * Redistribution and use in source and binary forms, with
+ /// * or without modification, are permitted provided that the
+ /// * following conditions are met:
+ /// *
+ /// * - Redistributions of source code must retain the above
+ /// * copyright notice, this list of conditions and the
+ /// * following disclaimer.
+ /// *
+ /// * - Redistributions in binary form must reproduce the above
+ /// * copyright notice, this list of conditions and the
+ /// * following disclaimer in the documentation and/or other
+ /// * materials provided with the distribution.
+ /// *
+ /// * - Neither the name of Internet Society, IETF or IETF
+ /// * Trust, nor the names of specific contributors, may be
+ /// * used to endorse or promote products derived from this
+ /// * software without specific prior written permission.
+ /// *
+ /// * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ /// * AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ /// * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ /// * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ /// * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ /// * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ /// * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ /// * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ /// * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ /// * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ /// * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ /// * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ /// * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ /// * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ /// * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ /// */
+ ///
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 4]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// /*
+ /// * This code was derived from RFC 7531.
+ /// */
+ ///
+ /// /*
+ /// * nfs4_prot.x
+ /// *
+ /// */
+ ///
+ /// /*
+ /// * Basic typedefs for RFC 1832 data type definitions
+ /// */
+ /// /*
+ /// * typedef int int32_t;
+ /// * typedef unsigned int uint32_t;
+ /// * typedef hyper int64_t;
+ /// * typedef unsigned hyper uint64_t;
+ /// */
+ ///
+ /// /*
+ /// * Sizes
+ /// */
+ /// const NFS4_FHSIZE = 128;
+ /// const NFS4_VERIFIER_SIZE = 8;
+ /// const NFS4_OTHER_SIZE = 12;
+ /// const NFS4_OPAQUE_LIMIT = 1024;
+ ///
+ /// const NFS4_INT64_MAX = 0x7fffffffffffffff;
+ /// const NFS4_UINT64_MAX = 0xffffffffffffffff;
+ /// const NFS4_INT32_MAX = 0x7fffffff;
+ /// const NFS4_UINT32_MAX = 0xffffffff;
+ ///
+ ///
+ /// /*
+ /// * File types
+ /// */
+ /// enum nfs_ftype4 {
+ /// NF4REG = 1, /* Regular File */
+ /// NF4DIR = 2, /* Directory */
+ /// NF4BLK = 3, /* Special File - block device */
+ /// NF4CHR = 4, /* Special File - character device */
+ /// NF4LNK = 5, /* Symbolic Link */
+ /// NF4SOCK = 6, /* Special File - socket */
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 5]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// NF4FIFO = 7, /* Special File - fifo */
+ /// NF4ATTRDIR
+ /// = 8, /* Attribute Directory */
+ /// NF4NAMEDATTR
+ /// = 9 /* Named Attribute */
+ /// };
+ ///
+ /// /*
+ /// * Error status
+ /// */
+ /// enum nfsstat4 {
+ /// NFS4_OK = 0, /* everything is okay */
+ /// NFS4ERR_PERM = 1, /* caller not privileged */
+ /// NFS4ERR_NOENT = 2, /* no such file/directory */
+ /// NFS4ERR_IO = 5, /* hard I/O error */
+ /// NFS4ERR_NXIO = 6, /* no such device */
+ /// NFS4ERR_ACCESS = 13, /* access denied */
+ /// NFS4ERR_EXIST = 17, /* file already exists */
+ /// NFS4ERR_XDEV = 18, /* different file systems */
+ /// /* Unused/reserved 19 */
+ /// NFS4ERR_NOTDIR = 20, /* should be a directory */
+ /// NFS4ERR_ISDIR = 21, /* should not be directory */
+ /// NFS4ERR_INVAL = 22, /* invalid argument */
+ /// NFS4ERR_FBIG = 27, /* file exceeds server max */
+ /// NFS4ERR_NOSPC = 28, /* no space on file system */
+ /// NFS4ERR_ROFS = 30, /* read-only file system */
+ /// NFS4ERR_MLINK = 31, /* too many hard links */
+ /// NFS4ERR_NAMETOOLONG = 63, /* name exceeds server max */
+ /// NFS4ERR_NOTEMPTY = 66, /* directory not empty */
+ /// NFS4ERR_DQUOT = 69, /* hard quota limit reached */
+ /// NFS4ERR_STALE = 70, /* file no longer exists */
+ /// NFS4ERR_BADHANDLE = 10001,/* Illegal filehandle */
+ /// NFS4ERR_BAD_COOKIE = 10003,/* READDIR cookie is stale */
+ /// NFS4ERR_NOTSUPP = 10004,/* operation not supported */
+ /// NFS4ERR_TOOSMALL = 10005,/* response limit exceeded */
+ /// NFS4ERR_SERVERFAULT = 10006,/* undefined server error */
+ /// NFS4ERR_BADTYPE = 10007,/* type invalid for CREATE */
+ /// NFS4ERR_DELAY = 10008,/* file "busy" - retry */
+ /// NFS4ERR_SAME = 10009,/* nverify says attrs same */
+ /// NFS4ERR_DENIED = 10010,/* lock unavailable */
+ /// NFS4ERR_EXPIRED = 10011,/* lock lease expired */
+ /// NFS4ERR_LOCKED = 10012,/* I/O failed due to lock */
+ /// NFS4ERR_GRACE = 10013,/* in grace period */
+ /// NFS4ERR_FHEXPIRED = 10014,/* filehandle expired */
+ /// NFS4ERR_SHARE_DENIED = 10015,/* share reserve denied */
+ /// NFS4ERR_WRONGSEC = 10016,/* wrong security flavor */
+ /// NFS4ERR_CLID_INUSE = 10017,/* clientid in use */
+ /// NFS4ERR_RESOURCE = 10018,/* resource exhaustion */
+
+
+
+Haynes & Noveck Standards Track [Page 6]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// NFS4ERR_MOVED = 10019,/* file system relocated */
+ /// NFS4ERR_NOFILEHANDLE = 10020,/* current FH is not set */
+ /// NFS4ERR_MINOR_VERS_MISMATCH = 10021,/* minor vers not supp */
+ /// NFS4ERR_STALE_CLIENTID = 10022,/* server has rebooted */
+ /// NFS4ERR_STALE_STATEID = 10023,/* server has rebooted */
+ /// NFS4ERR_OLD_STATEID = 10024,/* state is out of sync */
+ /// NFS4ERR_BAD_STATEID = 10025,/* incorrect stateid */
+ /// NFS4ERR_BAD_SEQID = 10026,/* request is out of seq. */
+ /// NFS4ERR_NOT_SAME = 10027,/* verify - attrs not same */
+ /// NFS4ERR_LOCK_RANGE = 10028,/* lock range not supported */
+ /// NFS4ERR_SYMLINK = 10029,/* should be file/directory */
+ /// NFS4ERR_RESTOREFH = 10030,/* no saved filehandle */
+ /// NFS4ERR_LEASE_MOVED = 10031,/* some file system moved */
+ /// NFS4ERR_ATTRNOTSUPP = 10032,/* recommended attr not sup */
+ /// NFS4ERR_NO_GRACE = 10033,/* reclaim outside of grace */
+ /// NFS4ERR_RECLAIM_BAD = 10034,/* reclaim error at server */
+ /// NFS4ERR_RECLAIM_CONFLICT = 10035,/* conflict on reclaim */
+ /// NFS4ERR_BADXDR = 10036,/* XDR decode failed */
+ /// NFS4ERR_LOCKS_HELD = 10037,/* file locks held at CLOSE */
+ /// NFS4ERR_OPENMODE = 10038,/* conflict in OPEN and I/O */
+ /// NFS4ERR_BADOWNER = 10039,/* owner translation bad */
+ /// NFS4ERR_BADCHAR = 10040,/* UTF-8 char not supported */
+ /// NFS4ERR_BADNAME = 10041,/* name not supported */
+ /// NFS4ERR_BAD_RANGE = 10042,/* lock range not supported */
+ /// NFS4ERR_LOCK_NOTSUPP = 10043,/* no atomic up/downgrade */
+ /// NFS4ERR_OP_ILLEGAL = 10044,/* undefined operation */
+ /// NFS4ERR_DEADLOCK = 10045,/* file locking deadlock */
+ /// NFS4ERR_FILE_OPEN = 10046,/* open file blocks op. */
+ /// NFS4ERR_ADMIN_REVOKED = 10047,/* lock-owner state revoked */
+ /// NFS4ERR_CB_PATH_DOWN = 10048 /* callback path down */
+ /// };
+ ///
+ /// /*
+ /// * Basic data types
+ /// */
+ /// typedef opaque attrlist4<>;
+ /// typedef uint32_t bitmap4<>;
+ /// typedef uint64_t changeid4;
+ /// typedef uint64_t clientid4;
+ /// typedef uint32_t count4;
+ /// typedef uint64_t length4;
+ /// typedef uint32_t mode4;
+ /// typedef uint64_t nfs_cookie4;
+ /// typedef opaque nfs_fh4<NFS4_FHSIZE>;
+ /// typedef uint32_t nfs_lease4;
+ /// typedef uint64_t offset4;
+ /// typedef uint32_t qop4;
+ /// typedef opaque sec_oid4<>;
+
+
+
+Haynes & Noveck Standards Track [Page 7]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// typedef uint32_t seqid4;
+ /// typedef opaque utf8string<>;
+ /// typedef utf8string utf8str_cis;
+ /// typedef utf8string utf8str_cs;
+ /// typedef utf8string utf8str_mixed;
+ /// typedef utf8str_cs component4;
+ /// typedef opaque linktext4<>;
+ /// typedef utf8string ascii_REQUIRED4;
+ /// typedef component4 pathname4<>;
+ /// typedef uint64_t nfs_lockid4;
+ /// typedef opaque verifier4[NFS4_VERIFIER_SIZE];
+ ///
+ ///
+ /// /*
+ /// * Timeval
+ /// */
+ /// struct nfstime4 {
+ /// int64_t seconds;
+ /// uint32_t nseconds;
+ /// };
+ ///
+ /// enum time_how4 {
+ /// SET_TO_SERVER_TIME4 = 0,
+ /// SET_TO_CLIENT_TIME4 = 1
+ /// };
+ ///
+ /// union settime4 switch (time_how4 set_it) {
+ /// case SET_TO_CLIENT_TIME4:
+ /// nfstime4 time;
+ /// default:
+ /// void;
+ /// };
+ ///
+ ///
+ /// /*
+ /// * File attribute definitions
+ /// */
+ ///
+ /// /*
+ /// * FSID structure for major/minor
+ /// */
+ /// struct fsid4 {
+ /// uint64_t major;
+ /// uint64_t minor;
+ /// };
+ ///
+ ///
+
+
+
+
+Haynes & Noveck Standards Track [Page 8]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// /*
+ /// * File system locations attribute for relocation/migration
+ /// */
+ /// struct fs_location4 {
+ /// utf8str_cis server<>;
+ /// pathname4 rootpath;
+ /// };
+ ///
+ /// struct fs_locations4 {
+ /// pathname4 fs_root;
+ /// fs_location4 locations<>;
+ /// };
+ ///
+ ///
+ /// /*
+ /// * Various Access Control Entry definitions
+ /// */
+ ///
+ /// /*
+ /// * Mask that indicates which Access Control Entries
+ /// * are supported. Values for the fattr4_aclsupport attribute.
+ /// */
+ /// const ACL4_SUPPORT_ALLOW_ACL = 0x00000001;
+ /// const ACL4_SUPPORT_DENY_ACL = 0x00000002;
+ /// const ACL4_SUPPORT_AUDIT_ACL = 0x00000004;
+ /// const ACL4_SUPPORT_ALARM_ACL = 0x00000008;
+ ///
+ ///
+ /// typedef uint32_t acetype4;
+ ///
+ ///
+ /// /*
+ /// * acetype4 values; others can be added as needed.
+ /// */
+ /// const ACE4_ACCESS_ALLOWED_ACE_TYPE = 0x00000000;
+ /// const ACE4_ACCESS_DENIED_ACE_TYPE = 0x00000001;
+ /// const ACE4_SYSTEM_AUDIT_ACE_TYPE = 0x00000002;
+ /// const ACE4_SYSTEM_ALARM_ACE_TYPE = 0x00000003;
+ ///
+ ///
+ ///
+ /// /*
+ /// * ACE flag
+ /// */
+ /// typedef uint32_t aceflag4;
+ ///
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 9]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ /// /*
+ /// * ACE flag values
+ /// */
+ /// const ACE4_FILE_INHERIT_ACE = 0x00000001;
+ /// const ACE4_DIRECTORY_INHERIT_ACE = 0x00000002;
+ /// const ACE4_NO_PROPAGATE_INHERIT_ACE = 0x00000004;
+ /// const ACE4_INHERIT_ONLY_ACE = 0x00000008;
+ /// const ACE4_SUCCESSFUL_ACCESS_ACE_FLAG = 0x00000010;
+ /// const ACE4_FAILED_ACCESS_ACE_FLAG = 0x00000020;
+ /// const ACE4_IDENTIFIER_GROUP = 0x00000040;
+ ///
+ ///
+ ///
+ /// /*
+ /// * ACE mask
+ /// */
+ /// typedef uint32_t acemask4;
+ ///
+ ///
+ /// /*
+ /// * ACE mask values
+ /// */
+ /// const ACE4_READ_DATA = 0x00000001;
+ /// const ACE4_LIST_DIRECTORY = 0x00000001;
+ /// const ACE4_WRITE_DATA = 0x00000002;
+ /// const ACE4_ADD_FILE = 0x00000002;
+ /// const ACE4_APPEND_DATA = 0x00000004;
+ /// const ACE4_ADD_SUBDIRECTORY = 0x00000004;
+ /// const ACE4_READ_NAMED_ATTRS = 0x00000008;
+ /// const ACE4_WRITE_NAMED_ATTRS = 0x00000010;
+ /// const ACE4_EXECUTE = 0x00000020;
+ /// const ACE4_DELETE_CHILD = 0x00000040;
+ /// const ACE4_READ_ATTRIBUTES = 0x00000080;
+ /// const ACE4_WRITE_ATTRIBUTES = 0x00000100;
+ ///
+ /// const ACE4_DELETE = 0x00010000;
+ /// const ACE4_READ_ACL = 0x00020000;
+ /// const ACE4_WRITE_ACL = 0x00040000;
+ /// const ACE4_WRITE_OWNER = 0x00080000;
+ /// const ACE4_SYNCHRONIZE = 0x00100000;
+ ///
+ ///
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 10]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// /*
+ /// * ACE4_GENERIC_READ - defined as a combination of
+ /// * ACE4_READ_ACL |
+ /// * ACE4_READ_DATA |
+ /// * ACE4_READ_ATTRIBUTES |
+ /// * ACE4_SYNCHRONIZE
+ /// */
+ ///
+ /// const ACE4_GENERIC_READ = 0x00120081;
+ ///
+ /// /*
+ /// * ACE4_GENERIC_WRITE - defined as a combination of
+ /// * ACE4_READ_ACL |
+ /// * ACE4_WRITE_DATA |
+ /// * ACE4_WRITE_ATTRIBUTES |
+ /// * ACE4_WRITE_ACL |
+ /// * ACE4_APPEND_DATA |
+ /// * ACE4_SYNCHRONIZE
+ /// */
+ /// const ACE4_GENERIC_WRITE = 0x00160106;
+ ///
+ ///
+ /// /*
+ /// * ACE4_GENERIC_EXECUTE - defined as a combination of
+ /// * ACE4_READ_ACL
+ /// * ACE4_READ_ATTRIBUTES
+ /// * ACE4_EXECUTE
+ /// * ACE4_SYNCHRONIZE
+ /// */
+ /// const ACE4_GENERIC_EXECUTE = 0x001200A0;
+ ///
+ ///
+ /// /*
+ /// * Access Control Entry definition
+ /// */
+ /// struct nfsace4 {
+ /// acetype4 type;
+ /// aceflag4 flag;
+ /// acemask4 access_mask;
+ /// utf8str_mixed who;
+ /// };
+ ///
+
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 11]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ /// /*
+ /// * Field definitions for the fattr4_mode attribute
+ /// */
+ /// const MODE4_SUID = 0x800; /* set user id on execution */
+ /// const MODE4_SGID = 0x400; /* set group id on execution */
+ /// const MODE4_SVTX = 0x200; /* save text even after use */
+ /// const MODE4_RUSR = 0x100; /* read permission: owner */
+ /// const MODE4_WUSR = 0x080; /* write permission: owner */
+ /// const MODE4_XUSR = 0x040; /* execute permission: owner */
+ /// const MODE4_RGRP = 0x020; /* read permission: group */
+ /// const MODE4_WGRP = 0x010; /* write permission: group */
+ /// const MODE4_XGRP = 0x008; /* execute permission: group */
+ /// const MODE4_ROTH = 0x004; /* read permission: other */
+ /// const MODE4_WOTH = 0x002; /* write permission: other */
+ /// const MODE4_XOTH = 0x001; /* execute permission: other */
+ ///
+ ///
+ /// /*
+ /// * Special data/attribute associated with
+ /// * file types NF4BLK and NF4CHR.
+ /// */
+ /// struct specdata4 {
+ /// uint32_t specdata1; /* major device number */
+ /// uint32_t specdata2; /* minor device number */
+ /// };
+ ///
+ ///
+ /// /*
+ /// * Values for fattr4_fh_expire_type
+ /// */
+ /// const FH4_PERSISTENT = 0x00000000;
+ /// const FH4_NOEXPIRE_WITH_OPEN = 0x00000001;
+ /// const FH4_VOLATILE_ANY = 0x00000002;
+ /// const FH4_VOL_MIGRATION = 0x00000004;
+ /// const FH4_VOL_RENAME = 0x00000008;
+ ///
+ ///
+ /// typedef bitmap4 fattr4_supported_attrs;
+ /// typedef nfs_ftype4 fattr4_type;
+ /// typedef uint32_t fattr4_fh_expire_type;
+ /// typedef changeid4 fattr4_change;
+ /// typedef uint64_t fattr4_size;
+ /// typedef bool fattr4_link_support;
+ /// typedef bool fattr4_symlink_support;
+ /// typedef bool fattr4_named_attr;
+ /// typedef fsid4 fattr4_fsid;
+
+
+
+
+Haynes & Noveck Standards Track [Page 12]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// typedef bool fattr4_unique_handles;
+ /// typedef nfs_lease4 fattr4_lease_time;
+ /// typedef nfsstat4 fattr4_rdattr_error;
+ ///
+ /// typedef nfsace4 fattr4_acl<>;
+ /// typedef uint32_t fattr4_aclsupport;
+ /// typedef bool fattr4_archive;
+ /// typedef bool fattr4_cansettime;
+ /// typedef bool fattr4_case_insensitive;
+ /// typedef bool fattr4_case_preserving;
+ /// typedef bool fattr4_chown_restricted;
+ /// typedef uint64_t fattr4_fileid;
+ /// typedef uint64_t fattr4_files_avail;
+ /// typedef nfs_fh4 fattr4_filehandle;
+ /// typedef uint64_t fattr4_files_free;
+ /// typedef uint64_t fattr4_files_total;
+ /// typedef fs_locations4 fattr4_fs_locations;
+ /// typedef bool fattr4_hidden;
+ /// typedef bool fattr4_homogeneous;
+ /// typedef uint64_t fattr4_maxfilesize;
+ /// typedef uint32_t fattr4_maxlink;
+ /// typedef uint32_t fattr4_maxname;
+ /// typedef uint64_t fattr4_maxread;
+ /// typedef uint64_t fattr4_maxwrite;
+ /// typedef ascii_REQUIRED4 fattr4_mimetype;
+ /// typedef mode4 fattr4_mode;
+ /// typedef uint64_t fattr4_mounted_on_fileid;
+ /// typedef bool fattr4_no_trunc;
+ /// typedef uint32_t fattr4_numlinks;
+ /// typedef utf8str_mixed fattr4_owner;
+ /// typedef utf8str_mixed fattr4_owner_group;
+ /// typedef uint64_t fattr4_quota_avail_hard;
+ /// typedef uint64_t fattr4_quota_avail_soft;
+ /// typedef uint64_t fattr4_quota_used;
+ /// typedef specdata4 fattr4_rawdev;
+ /// typedef uint64_t fattr4_space_avail;
+ /// typedef uint64_t fattr4_space_free;
+ /// typedef uint64_t fattr4_space_total;
+ /// typedef uint64_t fattr4_space_used;
+ /// typedef bool fattr4_system;
+ /// typedef nfstime4 fattr4_time_access;
+ /// typedef settime4 fattr4_time_access_set;
+ /// typedef nfstime4 fattr4_time_backup;
+ /// typedef nfstime4 fattr4_time_create;
+ /// typedef nfstime4 fattr4_time_delta;
+ /// typedef nfstime4 fattr4_time_metadata;
+ /// typedef nfstime4 fattr4_time_modify;
+ /// typedef settime4 fattr4_time_modify_set;
+
+
+
+Haynes & Noveck Standards Track [Page 13]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ ///
+ /// /*
+ /// * Mandatory attributes
+ /// */
+ /// const FATTR4_SUPPORTED_ATTRS = 0;
+ /// const FATTR4_TYPE = 1;
+ /// const FATTR4_FH_EXPIRE_TYPE = 2;
+ /// const FATTR4_CHANGE = 3;
+ /// const FATTR4_SIZE = 4;
+ /// const FATTR4_LINK_SUPPORT = 5;
+ /// const FATTR4_SYMLINK_SUPPORT = 6;
+ /// const FATTR4_NAMED_ATTR = 7;
+ /// const FATTR4_FSID = 8;
+ /// const FATTR4_UNIQUE_HANDLES = 9;
+ /// const FATTR4_LEASE_TIME = 10;
+ /// const FATTR4_RDATTR_ERROR = 11;
+ /// const FATTR4_FILEHANDLE = 19;
+ ///
+ /// /*
+ /// * Recommended attributes
+ /// */
+ /// const FATTR4_ACL = 12;
+ /// const FATTR4_ACLSUPPORT = 13;
+ /// const FATTR4_ARCHIVE = 14;
+ /// const FATTR4_CANSETTIME = 15;
+ /// const FATTR4_CASE_INSENSITIVE = 16;
+ /// const FATTR4_CASE_PRESERVING = 17;
+ /// const FATTR4_CHOWN_RESTRICTED = 18;
+ /// const FATTR4_FILEID = 20;
+ /// const FATTR4_FILES_AVAIL = 21;
+ /// const FATTR4_FILES_FREE = 22;
+ /// const FATTR4_FILES_TOTAL = 23;
+ /// const FATTR4_FS_LOCATIONS = 24;
+ /// const FATTR4_HIDDEN = 25;
+ /// const FATTR4_HOMOGENEOUS = 26;
+ /// const FATTR4_MAXFILESIZE = 27;
+ /// const FATTR4_MAXLINK = 28;
+ /// const FATTR4_MAXNAME = 29;
+ /// const FATTR4_MAXREAD = 30;
+ /// const FATTR4_MAXWRITE = 31;
+ /// const FATTR4_MIMETYPE = 32;
+ /// const FATTR4_MODE = 33;
+ /// const FATTR4_NO_TRUNC = 34;
+ /// const FATTR4_NUMLINKS = 35;
+ /// const FATTR4_OWNER = 36;
+ /// const FATTR4_OWNER_GROUP = 37;
+ /// const FATTR4_QUOTA_AVAIL_HARD = 38;
+
+
+
+Haynes & Noveck Standards Track [Page 14]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// const FATTR4_QUOTA_AVAIL_SOFT = 39;
+ /// const FATTR4_QUOTA_USED = 40;
+ /// const FATTR4_RAWDEV = 41;
+ /// const FATTR4_SPACE_AVAIL = 42;
+ /// const FATTR4_SPACE_FREE = 43;
+ /// const FATTR4_SPACE_TOTAL = 44;
+ /// const FATTR4_SPACE_USED = 45;
+ /// const FATTR4_SYSTEM = 46;
+ /// const FATTR4_TIME_ACCESS = 47;
+ /// const FATTR4_TIME_ACCESS_SET = 48;
+ /// const FATTR4_TIME_BACKUP = 49;
+ /// const FATTR4_TIME_CREATE = 50;
+ /// const FATTR4_TIME_DELTA = 51;
+ /// const FATTR4_TIME_METADATA = 52;
+ /// const FATTR4_TIME_MODIFY = 53;
+ /// const FATTR4_TIME_MODIFY_SET = 54;
+ /// const FATTR4_MOUNTED_ON_FILEID = 55;
+ ///
+ /// /*
+ /// * File attribute container
+ /// */
+ /// struct fattr4 {
+ /// bitmap4 attrmask;
+ /// attrlist4 attr_vals;
+ /// };
+ ///
+ ///
+ /// /*
+ /// * Change info for the client
+ /// */
+ /// struct change_info4 {
+ /// bool atomic;
+ /// changeid4 before;
+ /// changeid4 after;
+ /// };
+ ///
+ ///
+ /// struct clientaddr4 {
+ /// /* see struct rpcb in RFC 1833 */
+ /// string r_netid<>; /* network id */
+ /// string r_addr<>; /* universal address */
+ /// };
+ ///
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 15]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ /// /*
+ /// * Callback program info as provided by the client
+ /// */
+ /// struct cb_client4 {
+ /// unsigned int cb_program;
+ /// clientaddr4 cb_location;
+ /// };
+ ///
+ ///
+ /// /*
+ /// * Stateid
+ /// */
+ /// struct stateid4 {
+ /// uint32_t seqid;
+ /// opaque other[NFS4_OTHER_SIZE];
+ /// };
+ ///
+ /// /*
+ /// * Client ID
+ /// */
+ /// struct nfs_client_id4 {
+ /// verifier4 verifier;
+ /// opaque id<NFS4_OPAQUE_LIMIT>;
+ /// };
+ ///
+ ///
+ /// struct open_owner4 {
+ /// clientid4 clientid;
+ /// opaque owner<NFS4_OPAQUE_LIMIT>;
+ /// };
+ ///
+ ///
+ /// struct lock_owner4 {
+ /// clientid4 clientid;
+ /// opaque owner<NFS4_OPAQUE_LIMIT>;
+ /// };
+ ///
+ ///
+ /// enum nfs_lock_type4 {
+ /// READ_LT = 1,
+ /// WRITE_LT = 2,
+ /// READW_LT = 3, /* blocking read */
+ /// WRITEW_LT = 4 /* blocking write */
+ /// };
+ ///
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 16]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ /// const ACCESS4_READ = 0x00000001;
+ /// const ACCESS4_LOOKUP = 0x00000002;
+ /// const ACCESS4_MODIFY = 0x00000004;
+ /// const ACCESS4_EXTEND = 0x00000008;
+ /// const ACCESS4_DELETE = 0x00000010;
+ /// const ACCESS4_EXECUTE = 0x00000020;
+ ///
+ /// struct ACCESS4args {
+ /// /* CURRENT_FH: object */
+ /// uint32_t access;
+ /// };
+ ///
+ /// struct ACCESS4resok {
+ /// uint32_t supported;
+ /// uint32_t access;
+ /// };
+ ///
+ /// union ACCESS4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// ACCESS4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct CLOSE4args {
+ /// /* CURRENT_FH: object */
+ /// seqid4 seqid;
+ /// stateid4 open_stateid;
+ /// };
+ ///
+ /// union CLOSE4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// stateid4 open_stateid;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct COMMIT4args {
+ /// /* CURRENT_FH: file */
+ /// offset4 offset;
+ /// count4 count;
+ /// };
+ ///
+ /// struct COMMIT4resok {
+ /// verifier4 writeverf;
+ /// };
+ ///
+
+
+
+Haynes & Noveck Standards Track [Page 17]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// union COMMIT4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// COMMIT4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// union createtype4 switch (nfs_ftype4 type) {
+ /// case NF4LNK:
+ /// linktext4 linkdata;
+ /// case NF4BLK:
+ /// case NF4CHR:
+ /// specdata4 devdata;
+ /// case NF4SOCK:
+ /// case NF4FIFO:
+ /// case NF4DIR:
+ /// void;
+ /// default:
+ /// void; /* server should return NFS4ERR_BADTYPE */
+ /// };
+ ///
+ /// struct CREATE4args {
+ /// /* CURRENT_FH: directory for creation */
+ /// createtype4 objtype;
+ /// component4 objname;
+ /// fattr4 createattrs;
+ /// };
+ ///
+ /// struct CREATE4resok {
+ /// change_info4 cinfo;
+ /// bitmap4 attrset; /* attributes set */
+ /// };
+ ///
+ /// union CREATE4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// CREATE4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct DELEGPURGE4args {
+ /// clientid4 clientid;
+ /// };
+ ///
+ /// struct DELEGPURGE4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+
+
+
+Haynes & Noveck Standards Track [Page 18]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// struct DELEGRETURN4args {
+ /// /* CURRENT_FH: delegated file */
+ /// stateid4 deleg_stateid;
+ /// };
+ ///
+ /// struct DELEGRETURN4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct GETATTR4args {
+ /// /* CURRENT_FH: directory or file */
+ /// bitmap4 attr_request;
+ /// };
+ ///
+ /// struct GETATTR4resok {
+ /// fattr4 obj_attributes;
+ /// };
+ ///
+ /// union GETATTR4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// GETATTR4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct GETFH4resok {
+ /// nfs_fh4 object;
+ /// };
+ ///
+ /// union GETFH4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// GETFH4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct LINK4args {
+ /// /* SAVED_FH: source object */
+ /// /* CURRENT_FH: target directory */
+ /// component4 newname;
+ /// };
+ ///
+ /// struct LINK4resok {
+ /// change_info4 cinfo;
+ /// };
+ ///
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 19]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// union LINK4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// LINK4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// /*
+ /// * For LOCK, transition from open_owner to new lock_owner
+ /// */
+ /// struct open_to_lock_owner4 {
+ /// seqid4 open_seqid;
+ /// stateid4 open_stateid;
+ /// seqid4 lock_seqid;
+ /// lock_owner4 lock_owner;
+ /// };
+ ///
+ /// /*
+ /// * For LOCK, existing lock_owner continues to request file locks
+ /// */
+ /// struct exist_lock_owner4 {
+ /// stateid4 lock_stateid;
+ /// seqid4 lock_seqid;
+ /// };
+ ///
+ /// union locker4 switch (bool new_lock_owner) {
+ /// case TRUE:
+ /// open_to_lock_owner4 open_owner;
+ /// case FALSE:
+ /// exist_lock_owner4 lock_owner;
+ /// };
+ ///
+ /// /*
+ /// * LOCK/LOCKT/LOCKU: Record lock management
+ /// */
+ /// struct LOCK4args {
+ /// /* CURRENT_FH: file */
+ /// nfs_lock_type4 locktype;
+ /// bool reclaim;
+ /// offset4 offset;
+ /// length4 length;
+ /// locker4 locker;
+ /// };
+ ///
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 20]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// struct LOCK4denied {
+ /// offset4 offset;
+ /// length4 length;
+ /// nfs_lock_type4 locktype;
+ /// lock_owner4 owner;
+ /// };
+ ///
+ /// struct LOCK4resok {
+ /// stateid4 lock_stateid;
+ /// };
+ ///
+ /// union LOCK4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// LOCK4resok resok4;
+ /// case NFS4ERR_DENIED:
+ /// LOCK4denied denied;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct LOCKT4args {
+ /// /* CURRENT_FH: file */
+ /// nfs_lock_type4 locktype;
+ /// offset4 offset;
+ /// length4 length;
+ /// lock_owner4 owner;
+ /// };
+ ///
+ /// union LOCKT4res switch (nfsstat4 status) {
+ /// case NFS4ERR_DENIED:
+ /// LOCK4denied denied;
+ /// case NFS4_OK:
+ /// void;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct LOCKU4args {
+ /// /* CURRENT_FH: file */
+ /// nfs_lock_type4 locktype;
+ /// seqid4 seqid;
+ /// stateid4 lock_stateid;
+ /// offset4 offset;
+ /// length4 length;
+ /// };
+ ///
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 21]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// union LOCKU4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// stateid4 lock_stateid;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct LOOKUP4args {
+ /// /* CURRENT_FH: directory */
+ /// component4 objname;
+ /// };
+ ///
+ /// struct LOOKUP4res {
+ /// /* CURRENT_FH: object */
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct LOOKUPP4res {
+ /// /* CURRENT_FH: directory */
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct NVERIFY4args {
+ /// /* CURRENT_FH: object */
+ /// fattr4 obj_attributes;
+ /// };
+ ///
+ /// struct NVERIFY4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// 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;
+ /// /*
+ /// * Various definitions for OPEN
+ /// */
+ /// enum createmode4 {
+ /// UNCHECKED4 = 0,
+ /// GUARDED4 = 1,
+ /// EXCLUSIVE4 = 2
+ /// };
+ ///
+
+
+
+Haynes & Noveck Standards Track [Page 22]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// union createhow4 switch (createmode4 mode) {
+ /// case UNCHECKED4:
+ /// case GUARDED4:
+ /// fattr4 createattrs;
+ /// case EXCLUSIVE4:
+ /// verifier4 createverf;
+ /// };
+ ///
+ /// 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;
+ /// } ;
+ ///
+ /// enum open_delegation_type4 {
+ /// OPEN_DELEGATE_NONE = 0,
+ /// OPEN_DELEGATE_READ = 1,
+ /// OPEN_DELEGATE_WRITE = 2
+ /// };
+ ///
+
+
+
+
+Haynes & Noveck Standards Track [Page 23]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// enum open_claim_type4 {
+ /// CLAIM_NULL = 0,
+ /// CLAIM_PREVIOUS = 1,
+ /// CLAIM_DELEGATE_CUR = 2,
+ /// CLAIM_DELEGATE_PREV = 3
+ /// };
+ ///
+ /// 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;
+ /// };
+
+
+
+Haynes & Noveck Standards Track [Page 24]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ /// /*
+ /// * 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. */
+ /// };
+ ///
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 25]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// 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;
+ /// };
+ ///
+ /// /*
+ /// * 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;
+ ///
+ /// 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:
+ /// /* CURRENT_FH: opened file */
+ /// OPEN4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct OPENATTR4args {
+ /// /* CURRENT_FH: object */
+ /// bool createdir;
+ /// };
+ ///
+ /// struct OPENATTR4res {
+ /// /* CURRENT_FH: named attr directory */
+ /// nfsstat4 status;
+ /// };
+ ///
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 26]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// 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 {
+ /// /* CURRENT_FH: */
+ /// nfsstat4 status;
+ /// };
+ ///
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 27]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// struct PUTPUBFH4res {
+ /// /* CURRENT_FH: public fh */
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct PUTROOTFH4res {
+ /// /* 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;
+ /// };
+ ///
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 28]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// 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;
+ /// };
+ ///
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 29]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// 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;
+ /// };
+ ///
+ /// struct RENEW4args {
+ /// clientid4 clientid;
+ /// };
+ ///
+ /// struct RENEW4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct RESTOREFH4res {
+ /// /* CURRENT_FH: value of saved fh */
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct SAVEFH4res {
+ /// /* SAVED_FH: value of current fh */
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct SECINFO4args {
+ /// /* CURRENT_FH: directory */
+ /// component4 name;
+ /// };
+ ///
+
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 30]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// /*
+ /// * 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:
+ /// SECINFO4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct SETATTR4args {
+ /// /* CURRENT_FH: target object */
+ /// stateid4 stateid;
+ /// fattr4 obj_attributes;
+ /// };
+ ///
+ /// struct SETATTR4res {
+ /// nfsstat4 status;
+ /// bitmap4 attrsset;
+ /// };
+ ///
+ /// struct SETCLIENTID4args {
+ /// nfs_client_id4 client;
+ /// cb_client4 callback;
+ /// uint32_t callback_ident;
+ /// };
+
+
+
+Haynes & Noveck Standards Track [Page 31]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ ///
+ /// 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;
+ /// };
+ ///
+ /// 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;
+ /// };
+ ///
+ /// enum stable_how4 {
+ /// UNSTABLE4 = 0,
+ /// DATA_SYNC4 = 1,
+ /// FILE_SYNC4 = 2
+ /// };
+ ///
+ /// struct WRITE4args {
+ /// /* CURRENT_FH: file */
+ /// stateid4 stateid;
+ /// offset4 offset;
+ /// stable_how4 stable;
+ /// opaque data<>;
+ /// };
+ ///
+
+
+
+
+Haynes & Noveck Standards Track [Page 32]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// struct WRITE4resok {
+ /// count4 count;
+ /// stable_how4 committed;
+ /// verifier4 writeverf;
+ /// };
+ ///
+ /// union WRITE4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// WRITE4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct RELEASE_LOCKOWNER4args {
+ /// lock_owner4 lock_owner;
+ /// };
+ ///
+ /// struct RELEASE_LOCKOWNER4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// struct ILLEGAL4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// /*
+ /// * Operation arrays
+ /// */
+ ///
+ /// enum nfs_opnum4 {
+ /// OP_ACCESS = 3,
+ /// OP_CLOSE = 4,
+ /// OP_COMMIT = 5,
+ /// OP_CREATE = 6,
+ /// OP_DELEGPURGE = 7,
+ /// OP_DELEGRETURN = 8,
+ /// OP_GETATTR = 9,
+ /// OP_GETFH = 10,
+ /// OP_LINK = 11,
+ /// OP_LOCK = 12,
+ /// OP_LOCKT = 13,
+ /// OP_LOCKU = 14,
+ /// OP_LOOKUP = 15,
+ /// OP_LOOKUPP = 16,
+ /// OP_NVERIFY = 17,
+ /// OP_OPEN = 18,
+ /// OP_OPENATTR = 19,
+ /// OP_OPEN_CONFIRM = 20,
+
+
+
+Haynes & Noveck Standards Track [Page 33]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// OP_OPEN_DOWNGRADE = 21,
+ /// OP_PUTFH = 22,
+ /// OP_PUTPUBFH = 23,
+ /// OP_PUTROOTFH = 24,
+ /// OP_READ = 25,
+ /// OP_READDIR = 26,
+ /// OP_READLINK = 27,
+ /// OP_REMOVE = 28,
+ /// OP_RENAME = 29,
+ /// OP_RENEW = 30,
+ /// OP_RESTOREFH = 31,
+ /// OP_SAVEFH = 32,
+ /// OP_SECINFO = 33,
+ /// OP_SETATTR = 34,
+ /// OP_SETCLIENTID = 35,
+ /// OP_SETCLIENTID_CONFIRM = 36,
+ /// OP_VERIFY = 37,
+ /// OP_WRITE = 38,
+ /// OP_RELEASE_LOCKOWNER = 39,
+ /// OP_ILLEGAL = 10044
+ /// };
+ ///
+ /// union nfs_argop4 switch (nfs_opnum4 argop) {
+ /// case OP_ACCESS: ACCESS4args opaccess;
+ /// case OP_CLOSE: CLOSE4args opclose;
+ /// case OP_COMMIT: COMMIT4args opcommit;
+ /// case OP_CREATE: CREATE4args opcreate;
+ /// case OP_DELEGPURGE: DELEGPURGE4args opdelegpurge;
+ /// case OP_DELEGRETURN: DELEGRETURN4args opdelegreturn;
+ /// case OP_GETATTR: GETATTR4args opgetattr;
+ /// case OP_GETFH: void;
+ /// case OP_LINK: LINK4args oplink;
+ /// case OP_LOCK: LOCK4args oplock;
+ /// case OP_LOCKT: LOCKT4args oplockt;
+ /// case OP_LOCKU: LOCKU4args oplocku;
+ /// case OP_LOOKUP: LOOKUP4args oplookup;
+ /// case OP_LOOKUPP: void;
+ /// case OP_NVERIFY: NVERIFY4args opnverify;
+ /// case OP_OPEN: OPEN4args opopen;
+ /// case OP_OPENATTR: OPENATTR4args opopenattr;
+ /// case OP_OPEN_CONFIRM: OPEN_CONFIRM4args opopen_confirm;
+ /// case OP_OPEN_DOWNGRADE:
+ /// OPEN_DOWNGRADE4args opopen_downgrade;
+ /// case OP_PUTFH: PUTFH4args opputfh;
+ /// case OP_PUTPUBFH: void;
+ /// case OP_PUTROOTFH: void;
+ /// case OP_READ: READ4args opread;
+ /// case OP_READDIR: READDIR4args opreaddir;
+
+
+
+Haynes & Noveck Standards Track [Page 34]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// case OP_READLINK: void;
+ /// case OP_REMOVE: REMOVE4args opremove;
+ /// case OP_RENAME: RENAME4args oprename;
+ /// case OP_RENEW: RENEW4args oprenew;
+ /// case OP_RESTOREFH: void;
+ /// case OP_SAVEFH: void;
+ /// case OP_SECINFO: SECINFO4args opsecinfo;
+ /// case OP_SETATTR: SETATTR4args opsetattr;
+ /// case OP_SETCLIENTID: SETCLIENTID4args opsetclientid;
+ /// case OP_SETCLIENTID_CONFIRM: SETCLIENTID_CONFIRM4args
+ /// opsetclientid_confirm;
+ /// case OP_VERIFY: VERIFY4args opverify;
+ /// case OP_WRITE: WRITE4args opwrite;
+ /// case OP_RELEASE_LOCKOWNER:
+ /// RELEASE_LOCKOWNER4args
+ /// oprelease_lockowner;
+ /// case OP_ILLEGAL: void;
+ /// };
+ ///
+ /// union nfs_resop4 switch (nfs_opnum4 resop) {
+ /// case OP_ACCESS: ACCESS4res opaccess;
+ /// case OP_CLOSE: CLOSE4res opclose;
+ /// case OP_COMMIT: COMMIT4res opcommit;
+ /// case OP_CREATE: CREATE4res opcreate;
+ /// case OP_DELEGPURGE: DELEGPURGE4res opdelegpurge;
+ /// case OP_DELEGRETURN: DELEGRETURN4res opdelegreturn;
+ /// case OP_GETATTR: GETATTR4res opgetattr;
+ /// case OP_GETFH: GETFH4res opgetfh;
+ /// case OP_LINK: LINK4res oplink;
+ /// case OP_LOCK: LOCK4res oplock;
+ /// case OP_LOCKT: LOCKT4res oplockt;
+ /// case OP_LOCKU: LOCKU4res oplocku;
+ /// case OP_LOOKUP: LOOKUP4res oplookup;
+ /// case OP_LOOKUPP: LOOKUPP4res oplookupp;
+ /// case OP_NVERIFY: NVERIFY4res opnverify;
+ /// case OP_OPEN: OPEN4res opopen;
+ /// case OP_OPENATTR: OPENATTR4res opopenattr;
+ /// case OP_OPEN_CONFIRM: OPEN_CONFIRM4res opopen_confirm;
+ /// case OP_OPEN_DOWNGRADE:
+ /// OPEN_DOWNGRADE4res
+ /// opopen_downgrade;
+ /// case OP_PUTFH: PUTFH4res opputfh;
+ /// case OP_PUTPUBFH: PUTPUBFH4res opputpubfh;
+ /// case OP_PUTROOTFH: PUTROOTFH4res opputrootfh;
+ /// case OP_READ: READ4res opread;
+ /// case OP_READDIR: READDIR4res opreaddir;
+ /// case OP_READLINK: READLINK4res opreadlink;
+ /// case OP_REMOVE: REMOVE4res opremove;
+
+
+
+Haynes & Noveck Standards Track [Page 35]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// case OP_RENAME: RENAME4res oprename;
+ /// case OP_RENEW: RENEW4res oprenew;
+ /// case OP_RESTOREFH: RESTOREFH4res oprestorefh;
+ /// case OP_SAVEFH: SAVEFH4res opsavefh;
+ /// case OP_SECINFO: SECINFO4res opsecinfo;
+ /// case OP_SETATTR: SETATTR4res opsetattr;
+ /// case OP_SETCLIENTID: SETCLIENTID4res opsetclientid;
+ /// case OP_SETCLIENTID_CONFIRM:
+ /// SETCLIENTID_CONFIRM4res
+ /// opsetclientid_confirm;
+ /// case OP_VERIFY: VERIFY4res opverify;
+ /// case OP_WRITE: WRITE4res opwrite;
+ /// case OP_RELEASE_LOCKOWNER:
+ /// RELEASE_LOCKOWNER4res
+ /// oprelease_lockowner;
+ /// case OP_ILLEGAL: ILLEGAL4res opillegal;
+ /// };
+ ///
+ /// struct COMPOUND4args {
+ /// utf8str_cs tag;
+ /// uint32_t minorversion;
+ /// nfs_argop4 argarray<>;
+ /// };
+ ///
+ /// struct COMPOUND4res {
+ /// nfsstat4 status;
+ /// utf8str_cs tag;
+ /// nfs_resop4 resarray<>;
+ /// };
+ ///
+ ///
+ /// /*
+ /// * Remote file service routines
+ /// */
+ /// program NFS4_PROGRAM {
+ /// version NFS_V4 {
+ /// void
+ /// NFSPROC4_NULL(void) = 0;
+ ///
+ /// COMPOUND4res
+ /// NFSPROC4_COMPOUND(COMPOUND4args) = 1;
+ ///
+ /// } = 4;
+ /// } = 100003;
+ ///
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 36]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// /*
+ /// * NFS4 callback procedure definitions and program
+ /// */
+ /// struct CB_GETATTR4args {
+ /// nfs_fh4 fh;
+ /// bitmap4 attr_request;
+ /// };
+ ///
+ /// struct CB_GETATTR4resok {
+ /// fattr4 obj_attributes;
+ /// };
+ ///
+ /// union CB_GETATTR4res switch (nfsstat4 status) {
+ /// case NFS4_OK:
+ /// CB_GETATTR4resok resok4;
+ /// default:
+ /// void;
+ /// };
+ ///
+ /// struct CB_RECALL4args {
+ /// stateid4 stateid;
+ /// bool truncate;
+ /// nfs_fh4 fh;
+ /// };
+ ///
+ /// struct CB_RECALL4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// /*
+ /// * CB_ILLEGAL: Response for illegal operation numbers
+ /// */
+ /// struct CB_ILLEGAL4res {
+ /// nfsstat4 status;
+ /// };
+ ///
+ /// /*
+ /// * Various definitions for CB_COMPOUND
+ /// */
+ /// enum nfs_cb_opnum4 {
+ /// OP_CB_GETATTR = 3,
+ /// OP_CB_RECALL = 4,
+ /// OP_CB_ILLEGAL = 10044
+ /// };
+ ///
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 37]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+ /// union nfs_cb_argop4 switch (unsigned argop) {
+ /// case OP_CB_GETATTR: CB_GETATTR4args opcbgetattr;
+ /// case OP_CB_RECALL: CB_RECALL4args opcbrecall;
+ /// case OP_CB_ILLEGAL: void;
+ /// };
+ ///
+ /// union nfs_cb_resop4 switch (unsigned resop) {
+ /// case OP_CB_GETATTR: CB_GETATTR4res opcbgetattr;
+ /// case OP_CB_RECALL: CB_RECALL4res opcbrecall;
+ /// case OP_CB_ILLEGAL: CB_ILLEGAL4res opcbillegal;
+ /// };
+ ///
+ ///
+ /// struct CB_COMPOUND4args {
+ /// utf8str_cs tag;
+ /// uint32_t minorversion;
+ /// uint32_t callback_ident;
+ /// nfs_cb_argop4 argarray<>;
+ /// };
+ ///
+ /// struct CB_COMPOUND4res {
+ /// nfsstat4 status;
+ /// utf8str_cs tag;
+ /// nfs_cb_resop4 resarray<>;
+ /// };
+ ///
+ ///
+ ///
+ /// /*
+ /// * Program number is in the transient range, since the client
+ /// * will assign the exact transient program number and provide
+ /// * that to the server via the SETCLIENTID operation.
+ /// */
+ /// program NFS4_CALLBACK {
+ /// version NFS_CB {
+ /// void
+ /// CB_NULL(void) = 0;
+ /// CB_COMPOUND4res
+ /// CB_COMPOUND(CB_COMPOUND4args) = 1;
+ /// } = 1;
+ /// } = 0x40000000;
+
+
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 38]
+
+RFC 7531 NFSv4 XDR March 2015
+
+
+3. Security Considerations
+
+ See the Security Considerations section of [RFC7530].
+
+4. Normative References
+
+ [RFC4506] Eisler, M., Ed., "XDR: External Data Representation
+ Standard", STD 67, RFC 4506, May 2006,
+ <http://www.rfc-editor.org/info/rfc4506>.
+
+ [RFC7530] Haynes, T., Ed., and D. Noveck, Ed., "Network File System
+ (NFS) Version 4 Protocol", RFC 7530, March 2015,
+ <http://www.rfc-editor.org/info/rfc7530>.
+
+Acknowledgments
+
+ Tom Haynes would like to thank NetApp, Inc. for its funding of his
+ time on this project.
+
+ David Quigley tested the extraction of the .x file from this document
+ and corrected the two resulting errors.
+
+Authors' Addresses
+
+ Thomas Haynes (editor)
+ Primary Data, Inc.
+ 4300 El Camino Real Ste 100
+ Los Altos, CA 94022
+ United States
+
+ Phone: +1 408 215 1519
+ EMail: thomas.haynes@primarydata.com
+
+
+ David Noveck (editor)
+ Dell
+ 300 Innovative Way
+ Nashua, NH 03062
+ United States
+
+ Phone: +1 781 572 8038
+ EMail: dave_noveck@dell.com
+
+
+
+
+
+
+
+
+
+Haynes & Noveck Standards Track [Page 39]
+