text: /*
   *  include/linux/nfs4.h
   *
   *  NFSv4 protocol definitions.
   *
   *  Copyright (c) 2002 The Regents of the University of Michigan.
   *  All rights reserved.
   *
   *  Kendrick Smith <kmsmith@umich.edu>
   *  Andy Adamson   <andros@umich.edu>
   */
  #ifndef _LINUX_NFS4_H
  #define _LINUX_NFS4_H
  
  #include <linux/list.h>
  #include <linux/uidgid.h>
  #include <uapi/linux/nfs4.h>
  
  struct nfs4_ace {
  	uint32_t	type;
  	uint32_t	flag;
  	uint32_t	access_mask;
  	int		whotype;
  	union {
  		kuid_t	who_uid;
  		kgid_t	who_gid;
  	};
  };
  
  struct nfs4_acl {
  	uint32_t	naces;
  	struct nfs4_ace	aces[0];
  };
  
  #define NFS4_MAXLABELLEN	2048
  
  struct nfs4_label {
  	uint32_t	lfs;
  	uint32_t	pi;
  	u32		len;
  	char	*label;
  };
  
  typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier;
  
  struct nfs_stateid4 {
  	__be32 seqid;
  	char other[NFS4_STATEID_OTHER_SIZE];
  } __attribute__ ((packed));
  
  typedef struct nfs_stateid4 nfs4_stateid;
  
  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,
  	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,
  
  	/* nfs41 */
  	OP_BACKCHANNEL_CTL = 40,
  	OP_BIND_CONN_TO_SESSION = 41,
  	OP_EXCHANGE_ID = 42,
  	OP_CREATE_SESSION = 43,
  	OP_DESTROY_SESSION = 44,
  	OP_FREE_STATEID = 45,
  	OP_GET_DIR_DELEGATION = 46,
  	OP_GETDEVICEINFO = 47,
  	OP_GETDEVICELIST = 48,
  	OP_LAYOUTCOMMIT = 49,
  	OP_LAYOUTGET = 50,
  	OP_LAYOUTRETURN = 51,
  	OP_SECINFO_NO_NAME = 52,
  	OP_SEQUENCE = 53,
  	OP_SET_SSV = 54,
  	OP_TEST_STATEID = 55,
  	OP_WANT_DELEGATION = 56,
  	OP_DESTROY_CLIENTID = 57,
  	OP_RECLAIM_COMPLETE = 58,
  
  	/* nfs42 */
  	OP_ALLOCATE = 59,
  	OP_COPY = 60,
  	OP_COPY_NOTIFY = 61,
  	OP_DEALLOCATE = 62,
  	OP_IO_ADVISE = 63,
  	OP_LAYOUTERROR = 64,
  	OP_LAYOUTSTATS = 65,
  	OP_OFFLOAD_CANCEL = 66,
  	OP_OFFLOAD_STATUS = 67,
  	OP_READ_PLUS = 68,
  	OP_SEEK = 69,
  	OP_WRITE_SAME = 70,
  
  	OP_ILLEGAL = 10044,
  };
  
  /*Defining first and last NFS4 operations implemented.
  Needs to be updated if more operations are defined in future.*/
  
  #define FIRST_NFS4_OP	OP_ACCESS
  #define LAST_NFS4_OP 	OP_WRITE_SAME
  #define LAST_NFS40_OP	OP_RELEASE_LOCKOWNER
  #define LAST_NFS41_OP	OP_RECLAIM_COMPLETE
  #define LAST_NFS42_OP	OP_WRITE_SAME
  
  enum nfsstat4 {
  	NFS4_OK = 0,
  	NFS4ERR_PERM = 1,
  	NFS4ERR_NOENT = 2,
  	NFS4ERR_IO = 5,
  	NFS4ERR_NXIO = 6,
  	NFS4ERR_ACCESS = 13,
  	NFS4ERR_EXIST = 17,
  	NFS4ERR_XDEV = 18,
  	/* Unused/reserved 19 */
  	NFS4ERR_NOTDIR = 20,
  	NFS4ERR_ISDIR = 21,
  	NFS4ERR_INVAL = 22,
  	NFS4ERR_FBIG = 27,
  	NFS4ERR_NOSPC = 28,
  	NFS4ERR_ROFS = 30,
  	NFS4ERR_MLINK = 31,
  	NFS4ERR_NAMETOOLONG = 63,
  	NFS4ERR_NOTEMPTY = 66,
  	NFS4ERR_DQUOT = 69,
  	NFS4ERR_STALE = 70,
  	NFS4ERR_BADHANDLE = 10001,
  	NFS4ERR_BAD_COOKIE = 10003,
  	NFS4ERR_NOTSUPP = 10004,
  	NFS4ERR_TOOSMALL = 10005,
  	NFS4ERR_SERVERFAULT = 10006,
  	NFS4ERR_BADTYPE = 10007,
  	NFS4ERR_DELAY = 10008,
  	NFS4ERR_SAME = 10009,
  	NFS4ERR_DENIED = 10010,
  	NFS4ERR_EXPIRED = 10011,
  	NFS4ERR_LOCKED = 10012,
  	NFS4ERR_GRACE = 10013,
  	NFS4ERR_FHEXPIRED = 10014,
  	NFS4ERR_SHARE_DENIED = 10015,
  	NFS4ERR_WRONGSEC = 10016,
  	NFS4ERR_CLID_INUSE = 10017,
  	NFS4ERR_RESOURCE = 10018,
  	NFS4ERR_MOVED = 10019,
  	NFS4ERR_NOFILEHANDLE = 10020,
  	NFS4ERR_MINOR_VERS_MISMATCH = 10021,
  	NFS4ERR_STALE_CLIENTID = 10022,
  	NFS4ERR_STALE_STATEID = 10023,
  	NFS4ERR_OLD_STATEID = 10024,
  	NFS4ERR_BAD_STATEID = 10025,
  	NFS4ERR_BAD_SEQID = 10026,
  	NFS4ERR_NOT_SAME = 10027,
  	NFS4ERR_LOCK_RANGE = 10028,
  	NFS4ERR_SYMLINK = 10029,
  	NFS4ERR_RESTOREFH = 10030,
  	NFS4ERR_LEASE_MOVED = 10031,
  	NFS4ERR_ATTRNOTSUPP = 10032,
  	NFS4ERR_NO_GRACE = 10033,
  	NFS4ERR_RECLAIM_BAD = 10034,
  	NFS4ERR_RECLAIM_CONFLICT = 10035,
  	NFS4ERR_BADXDR = 10036,
  	NFS4ERR_LOCKS_HELD = 10037,
  	NFS4ERR_OPENMODE = 10038,
  	NFS4ERR_BADOWNER = 10039,
  	NFS4ERR_BADCHAR = 10040,
  	NFS4ERR_BADNAME = 10041,
  	NFS4ERR_BAD_RANGE = 10042,
  	NFS4ERR_LOCK_NOTSUPP = 10043,
  	NFS4ERR_OP_ILLEGAL = 10044,
  	NFS4ERR_DEADLOCK = 10045,
  	NFS4ERR_FILE_OPEN = 10046,
  	NFS4ERR_ADMIN_REVOKED = 10047,
  	NFS4ERR_CB_PATH_DOWN = 10048,
  
  	/* nfs41 */
  	NFS4ERR_BADIOMODE	= 10049,
  	NFS4ERR_BADLAYOUT	= 10050,
  	NFS4ERR_BAD_SESSION_DIGEST = 10051,
  	NFS4ERR_BADSESSION	= 10052,
  	NFS4ERR_BADSLOT		= 10053,
  	NFS4ERR_COMPLETE_ALREADY = 10054,
  	NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
  	NFS4ERR_DELEG_ALREADY_WANTED = 10056,
  	NFS4ERR_BACK_CHAN_BUSY	= 10057,	/* backchan reqs outstanding */
  	NFS4ERR_LAYOUTTRYLATER	= 10058,
  	NFS4ERR_LAYOUTUNAVAILABLE = 10059,
  	NFS4ERR_NOMATCHING_LAYOUT = 10060,
  	NFS4ERR_RECALLCONFLICT	= 10061,
  	NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
  	NFS4ERR_SEQ_MISORDERED = 10063, 	/* unexpected seq.id in req */
  	NFS4ERR_SEQUENCE_POS	= 10064,	/* [CB_]SEQ. op not 1st op */
  	NFS4ERR_REQ_TOO_BIG	= 10065,	/* request too big */
  	NFS4ERR_REP_TOO_BIG	= 10066,	/* reply too big */
  	NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067,	/* rep. not all cached */
  	NFS4ERR_RETRY_UNCACHED_REP = 10068,	/* retry & rep. uncached */
  	NFS4ERR_UNSAFE_COMPOUND = 10069,	/* retry/recovery too hard */
  	NFS4ERR_TOO_MANY_OPS	= 10070,	/* too many ops in [CB_]COMP */
  	NFS4ERR_OP_NOT_IN_SESSION = 10071,	/* op needs [CB_]SEQ. op */
  	NFS4ERR_HASH_ALG_UNSUPP = 10072,	/* hash alg. not supp. */
  						/* Error 10073 is unused. */
  	NFS4ERR_CLIENTID_BUSY	= 10074,	/* clientid has state */
  	NFS4ERR_PNFS_IO_HOLE	= 10075,	/* IO to _SPARSE file hole */
  	NFS4ERR_SEQ_FALSE_RETRY	= 10076,	/* retry not original */
  	NFS4ERR_BAD_HIGH_SLOT	= 10077,	/* sequence arg bad */
  	NFS4ERR_DEADSESSION	= 10078,	/* persistent session dead */
  	NFS4ERR_ENCR_ALG_UNSUPP = 10079,	/* SSV alg mismatch */
  	NFS4ERR_PNFS_NO_LAYOUT	= 10080,	/* direct I/O with no layout */
  	NFS4ERR_NOT_ONLY_OP	= 10081,	/* bad compound */
  	NFS4ERR_WRONG_CRED	= 10082,	/* permissions:state change */
  	NFS4ERR_WRONG_TYPE	= 10083,	/* current operation mismatch */
  	NFS4ERR_DIRDELEG_UNAVAIL = 10084,	/* no directory delegation */
  	NFS4ERR_REJECT_DELEG	= 10085,	/* on callback */
  	NFS4ERR_RETURNCONFLICT	= 10086,	/* outstanding layoutreturn */
  	NFS4ERR_DELEG_REVOKED	= 10087,	/* deleg./layout revoked */
  
  	/* nfs42 */
  	NFS4ERR_PARTNER_NOTSUPP	= 10088,
  	NFS4ERR_PARTNER_NO_AUTH	= 10089,
  	NFS4ERR_UNION_NOTSUPP = 10090,
  	NFS4ERR_OFFLOAD_DENIED = 10091,
  	NFS4ERR_WRONG_LFS = 10092,
  	NFS4ERR_BADLABEL = 10093,
  	NFS4ERR_OFFLOAD_NO_REQS = 10094,
  };
  
  static inline bool seqid_mutating_err(u32 err)
  {
  	/* rfc 3530 section 8.1.5: */
  	switch (err) {
  	case NFS4ERR_STALE_CLIENTID:
  	case NFS4ERR_STALE_STATEID:
  	case NFS4ERR_BAD_STATEID:
  	case NFS4ERR_BAD_SEQID:
  	case NFS4ERR_BADXDR:
  	case NFS4ERR_RESOURCE:
  	case NFS4ERR_NOFILEHANDLE:
  		return false;
  	};
  	return true;
  }
  
  /*
   * Note: NF4BAD is not actually part of the protocol; it is just used
   * internally by nfsd.
   */
  enum nfs_ftype4 {
  	NF4BAD		= 0,
          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 */
          NF4FIFO         = 7,    /* Special File - fifo */
          NF4ATTRDIR      = 8,    /* Attribute Directory */
          NF4NAMEDATTR    = 9     /* Named Attribute */
  };
  
  enum open_claim_type4 {
  	NFS4_OPEN_CLAIM_NULL = 0,
  	NFS4_OPEN_CLAIM_PREVIOUS = 1,
  	NFS4_OPEN_CLAIM_DELEGATE_CUR = 2,
  	NFS4_OPEN_CLAIM_DELEGATE_PREV = 3,
  	NFS4_OPEN_CLAIM_FH = 4, /* 4.1 */
  	NFS4_OPEN_CLAIM_DELEG_CUR_FH = 5, /* 4.1 */
  	NFS4_OPEN_CLAIM_DELEG_PREV_FH = 6, /* 4.1 */
  };
  
  enum opentype4 {
  	NFS4_OPEN_NOCREATE = 0,
  	NFS4_OPEN_CREATE = 1
  };
  
  enum createmode4 {
  	NFS4_CREATE_UNCHECKED = 0,
  	NFS4_CREATE_GUARDED = 1,
  	NFS4_CREATE_EXCLUSIVE = 2,
  	/*
  	 * New to NFSv4.1. If session is persistent,
  	 * GUARDED4 MUST be used. Otherwise, use
  	 * EXCLUSIVE4_1 instead of EXCLUSIVE4.
  	 */
  	NFS4_CREATE_EXCLUSIVE4_1 = 3
  };
  
  enum limit_by4 {
  	NFS4_LIMIT_SIZE = 1,
  	NFS4_LIMIT_BLOCKS = 2
  };
  
  enum open_delegation_type4 {
  	NFS4_OPEN_DELEGATE_NONE = 0,
  	NFS4_OPEN_DELEGATE_READ = 1,
  	NFS4_OPEN_DELEGATE_WRITE = 2,
  	NFS4_OPEN_DELEGATE_NONE_EXT = 3, /* 4.1 */
  };
  
  enum why_no_delegation4 { /* new to v4.1 */
  	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,
  };
  
  enum lock_type4 {
  	NFS4_UNLOCK_LT = 0,
  	NFS4_READ_LT = 1,
  	NFS4_WRITE_LT = 2,
  	NFS4_READW_LT = 3,
  	NFS4_WRITEW_LT = 4
  };
  
  
  /* Mandatory Attributes */
  #define FATTR4_WORD0_SUPPORTED_ATTRS    (1UL << 0)
  #define FATTR4_WORD0_TYPE               (1UL << 1)
  #define FATTR4_WORD0_FH_EXPIRE_TYPE     (1UL << 2)
  #define FATTR4_WORD0_CHANGE             (1UL << 3)
  #define FATTR4_WORD0_SIZE               (1UL << 4)
  #define FATTR4_WORD0_LINK_SUPPORT       (1UL << 5)
  #define FATTR4_WORD0_SYMLINK_SUPPORT    (1UL << 6)
  #define FATTR4_WORD0_NAMED_ATTR         (1UL << 7)
  #define FATTR4_WORD0_FSID               (1UL << 8)
  #define FATTR4_WORD0_UNIQUE_HANDLES     (1UL << 9)
  #define FATTR4_WORD0_LEASE_TIME         (1UL << 10)
  #define FATTR4_WORD0_RDATTR_ERROR       (1UL << 11)
  /* Mandatory in NFSv4.1 */
  #define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
  
  /* Recommended Attributes */
  #define FATTR4_WORD0_ACL                (1UL << 12)
  #define FATTR4_WORD0_ACLSUPPORT         (1UL << 13)
  #define FATTR4_WORD0_ARCHIVE            (1UL << 14)
  #define FATTR4_WORD0_CANSETTIME         (1UL << 15)
  #define FATTR4_WORD0_CASE_INSENSITIVE   (1UL << 16)
  #define FATTR4_WORD0_CASE_PRESERVING    (1UL << 17)
  #define FATTR4_WORD0_CHOWN_RESTRICTED   (1UL << 18)
  #define FATTR4_WORD0_FILEHANDLE         (1UL << 19)
  #define FATTR4_WORD0_FILEID             (1UL << 20)
  #define FATTR4_WORD0_FILES_AVAIL        (1UL << 21)
  #define FATTR4_WORD0_FILES_FREE         (1UL << 22)
  #define FATTR4_WORD0_FILES_TOTAL        (1UL << 23)
  #define FATTR4_WORD0_FS_LOCATIONS       (1UL << 24)
  #define FATTR4_WORD0_HIDDEN             (1UL << 25)
  #define FATTR4_WORD0_HOMOGENEOUS        (1UL << 26)
  #define FATTR4_WORD0_MAXFILESIZE        (1UL << 27)
  #define FATTR4_WORD0_MAXLINK            (1UL << 28)
  #define FATTR4_WORD0_MAXNAME            (1UL << 29)
  #define FATTR4_WORD0_MAXREAD            (1UL << 30)
  #define FATTR4_WORD0_MAXWRITE           (1UL << 31)
  #define FATTR4_WORD1_MIMETYPE           (1UL << 0)
  #define FATTR4_WORD1_MODE               (1UL << 1)
  #define FATTR4_WORD1_NO_TRUNC           (1UL << 2)
  #define FATTR4_WORD1_NUMLINKS           (1UL << 3)
  #define FATTR4_WORD1_OWNER              (1UL << 4)
  #define FATTR4_WORD1_OWNER_GROUP        (1UL << 5)
  #define FATTR4_WORD1_QUOTA_HARD         (1UL << 6)
  #define FATTR4_WORD1_QUOTA_SOFT         (1UL << 7)
  #define FATTR4_WORD1_QUOTA_USED         (1UL << 8)
  #define FATTR4_WORD1_RAWDEV             (1UL << 9)
  #define FATTR4_WORD1_SPACE_AVAIL        (1UL << 10)
  #define FATTR4_WORD1_SPACE_FREE         (1UL << 11)
  #define FATTR4_WORD1_SPACE_TOTAL        (1UL << 12)
  #define FATTR4_WORD1_SPACE_USED         (1UL << 13)
  #define FATTR4_WORD1_SYSTEM             (1UL << 14)
  #define FATTR4_WORD1_TIME_ACCESS        (1UL << 15)
  #define FATTR4_WORD1_TIME_ACCESS_SET    (1UL << 16)
  #define FATTR4_WORD1_TIME_BACKUP        (1UL << 17)
  #define FATTR4_WORD1_TIME_CREATE        (1UL << 18)
  #define FATTR4_WORD1_TIME_DELTA         (1UL << 19)
  #define FATTR4_WORD1_TIME_METADATA      (1UL << 20)
  #define FATTR4_WORD1_TIME_MODIFY        (1UL << 21)
  #define FATTR4_WORD1_TIME_MODIFY_SET    (1UL << 22)
  #define FATTR4_WORD1_MOUNTED_ON_FILEID  (1UL << 23)
  #define FATTR4_WORD1_FS_LAYOUT_TYPES    (1UL << 30)
  #define FATTR4_WORD2_LAYOUT_BLKSIZE     (1UL << 1)
  #define FATTR4_WORD2_MDSTHRESHOLD       (1UL << 4)
  #define FATTR4_WORD2_SECURITY_LABEL     (1UL << 16)
  
  /* MDS threshold bitmap bits */
  #define THRESHOLD_RD                    (1UL << 0)
  #define THRESHOLD_WR                    (1UL << 1)
  #define THRESHOLD_RD_IO                 (1UL << 2)
  #define THRESHOLD_WR_IO                 (1UL << 3)
  
  #define NFSPROC4_NULL 0
  #define NFSPROC4_COMPOUND 1
  #define NFS4_VERSION 4
  #define NFS4_MINOR_VERSION 0
  
  #define NFS4_DEBUG 1
  
  /* Index of predefined Linux client operations */
  
  enum {
  	NFSPROC4_CLNT_NULL = 0,		/* Unused */
  	NFSPROC4_CLNT_READ,
  	NFSPROC4_CLNT_WRITE,
  	NFSPROC4_CLNT_COMMIT,
  	NFSPROC4_CLNT_OPEN,
  	NFSPROC4_CLNT_OPEN_CONFIRM,
  	NFSPROC4_CLNT_OPEN_NOATTR,
  	NFSPROC4_CLNT_OPEN_DOWNGRADE,
  	NFSPROC4_CLNT_CLOSE,
  	NFSPROC4_CLNT_SETATTR,
  	NFSPROC4_CLNT_FSINFO,
  	NFSPROC4_CLNT_RENEW,
  	NFSPROC4_CLNT_SETCLIENTID,
  	NFSPROC4_CLNT_SETCLIENTID_CONFIRM,
  	NFSPROC4_CLNT_LOCK,
  	NFSPROC4_CLNT_LOCKT,
  	NFSPROC4_CLNT_LOCKU,
  	NFSPROC4_CLNT_ACCESS,
  	NFSPROC4_CLNT_GETATTR,
  	NFSPROC4_CLNT_LOOKUP,
  	NFSPROC4_CLNT_LOOKUP_ROOT,
  	NFSPROC4_CLNT_REMOVE,
  	NFSPROC4_CLNT_RENAME,
  	NFSPROC4_CLNT_LINK,
  	NFSPROC4_CLNT_SYMLINK,
  	NFSPROC4_CLNT_CREATE,
  	NFSPROC4_CLNT_PATHCONF,
  	NFSPROC4_CLNT_STATFS,
  	NFSPROC4_CLNT_READLINK,
  	NFSPROC4_CLNT_READDIR,
  	NFSPROC4_CLNT_SERVER_CAPS,
  	NFSPROC4_CLNT_DELEGRETURN,
  	NFSPROC4_CLNT_GETACL,
  	NFSPROC4_CLNT_SETACL,
  	NFSPROC4_CLNT_FS_LOCATIONS,
  	NFSPROC4_CLNT_RELEASE_LOCKOWNER,
  	NFSPROC4_CLNT_SECINFO,
  	NFSPROC4_CLNT_FSID_PRESENT,
  
  	/* nfs41 */
  	NFSPROC4_CLNT_EXCHANGE_ID,
  	NFSPROC4_CLNT_CREATE_SESSION,
  	NFSPROC4_CLNT_DESTROY_SESSION,
  	NFSPROC4_CLNT_SEQUENCE,
  	NFSPROC4_CLNT_GET_LEASE_TIME,
  	NFSPROC4_CLNT_RECLAIM_COMPLETE,
  	NFSPROC4_CLNT_LAYOUTGET,
  	NFSPROC4_CLNT_GETDEVICEINFO,
  	NFSPROC4_CLNT_LAYOUTCOMMIT,
  	NFSPROC4_CLNT_LAYOUTRETURN,
  	NFSPROC4_CLNT_SECINFO_NO_NAME,
  	NFSPROC4_CLNT_TEST_STATEID,
  	NFSPROC4_CLNT_FREE_STATEID,
  	NFSPROC4_CLNT_GETDEVICELIST,
  	NFSPROC4_CLNT_BIND_CONN_TO_SESSION,
  	NFSPROC4_CLNT_DESTROY_CLIENTID,
  
  	/* nfs42 */
  	NFSPROC4_CLNT_SEEK,
  };
  
  /* nfs41 types */
  struct nfs4_sessionid {
  	unsigned char data[NFS4_MAX_SESSIONID_LEN];
  };
  
  /* Create Session Flags */
  #define SESSION4_PERSIST	0x001
  #define SESSION4_BACK_CHAN	0x002
  #define SESSION4_RDMA		0x004
  
  #define SESSION4_FLAG_MASK_A	0x007
  
  enum state_protect_how4 {
  	SP4_NONE	= 0,
  	SP4_MACH_CRED	= 1,
  	SP4_SSV		= 2
  };
  
  enum pnfs_layouttype {
  	LAYOUT_NFSV4_1_FILES  = 1,
  	LAYOUT_OSD2_OBJECTS = 2,
  	LAYOUT_BLOCK_VOLUME = 3,
  };
  
  /* used for both layout return and recall */
  enum pnfs_layoutreturn_type {
  	RETURN_FILE = 1,
  	RETURN_FSID = 2,
  	RETURN_ALL  = 3
  };
  
  enum pnfs_iomode {
  	IOMODE_READ = 1,
  	IOMODE_RW = 2,
  	IOMODE_ANY = 3,
  };
  
  enum pnfs_notify_deviceid_type4 {
  	NOTIFY_DEVICEID4_CHANGE = 1 << 1,
  	NOTIFY_DEVICEID4_DELETE = 1 << 2,
  };
  
  #define NFL4_UFLG_MASK			0x0000003F
  #define NFL4_UFLG_DENSE			0x00000001
  #define NFL4_UFLG_COMMIT_THRU_MDS	0x00000002
  #define NFL4_UFLG_STRIPE_UNIT_SIZE_MASK	0xFFFFFFC0
  
  /* Encoded in the loh_body field of type layouthint4 */
  enum filelayout_hint_care4 {
  	NFLH4_CARE_DENSE		= NFL4_UFLG_DENSE,
  	NFLH4_CARE_COMMIT_THRU_MDS	= NFL4_UFLG_COMMIT_THRU_MDS,
  	NFLH4_CARE_STRIPE_UNIT_SIZE	= 0x00000040,
  	NFLH4_CARE_STRIPE_COUNT		= 0x00000080
  };
  
  #define NFS4_DEVICEID4_SIZE 16
  
  struct nfs4_deviceid {
  	char data[NFS4_DEVICEID4_SIZE];
  };
  
  enum data_content4 {
  	NFS4_CONTENT_DATA		= 0,
  	NFS4_CONTENT_HOLE		= 1,
  };
  
  #endif
  