c59e4cc34d
into head. The code is not believed to have any effect on the semantics of non-NFSv4.1 server behaviour. It is a rather large merge, but I am hoping that there will not be any regressions for the NFS server. MFC after: 1 month
372 lines
11 KiB
C
372 lines
11 KiB
C
/*-
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* Copyright (c) 2009 Rick Macklem, University of Guelph
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NFS_NFSCLSTATE_H_
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#define _NFS_NFSCLSTATE_H_
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/*
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* Definitions for NFS V4 client state handling.
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*/
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LIST_HEAD(nfsclopenhead, nfsclopen);
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LIST_HEAD(nfscllockownerhead, nfscllockowner);
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SLIST_HEAD(nfscllockownerfhhead, nfscllockownerfh);
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LIST_HEAD(nfscllockhead, nfscllock);
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LIST_HEAD(nfsclhead, nfsclclient);
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LIST_HEAD(nfsclownerhead, nfsclowner);
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TAILQ_HEAD(nfscldeleghead, nfscldeleg);
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LIST_HEAD(nfscldeleghash, nfscldeleg);
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TAILQ_HEAD(nfscllayouthead, nfscllayout);
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LIST_HEAD(nfscllayouthash, nfscllayout);
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LIST_HEAD(nfsclflayouthead, nfsclflayout);
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LIST_HEAD(nfscldevinfohead, nfscldevinfo);
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LIST_HEAD(nfsclrecalllayouthead, nfsclrecalllayout);
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#define NFSCLDELEGHASHSIZE 256
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#define NFSCLDELEGHASH(c, f, l) \
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(&((c)->nfsc_deleghash[ncl_hash((f), (l)) % NFSCLDELEGHASHSIZE]))
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#define NFSCLLAYOUTHASHSIZE 256
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#define NFSCLLAYOUTHASH(c, f, l) \
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(&((c)->nfsc_layouthash[ncl_hash((f), (l)) % NFSCLLAYOUTHASHSIZE]))
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/* Structure for NFSv4.1 session stuff. */
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struct nfsclsession {
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struct mtx nfsess_mtx;
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struct nfsslot nfsess_cbslots[NFSV4_CBSLOTS];
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nfsquad_t nfsess_clientid;
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SVCXPRT *nfsess_xprt; /* For backchannel callback */
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uint32_t nfsess_slotseq[64]; /* Max for 64bit nm_slots */
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uint64_t nfsess_slots;
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uint32_t nfsess_sequenceid;
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uint32_t nfsess_maxcache; /* Max size for cached reply. */
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uint16_t nfsess_foreslots;
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uint16_t nfsess_backslots;
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uint8_t nfsess_sessionid[NFSX_V4SESSIONID];
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};
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/*
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* This structure holds the session, clientid and related information
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* needed for an NFSv4.1 Meta Data Server (MDS) or Data Server (DS).
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* It is malloc'd to the correct length.
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*/
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struct nfsclds {
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TAILQ_ENTRY(nfsclds) nfsclds_list;
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struct nfsclsession nfsclds_sess;
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struct mtx nfsclds_mtx;
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struct nfssockreq *nfsclds_sockp;
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time_t nfsclds_expire;
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uint16_t nfsclds_flags;
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uint16_t nfsclds_servownlen;
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uint8_t nfsclds_verf[NFSX_VERF];
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uint8_t nfsclds_serverown[0];
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};
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/*
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* Flags for nfsclds_flags.
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*/
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#define NFSCLDS_HASWRITEVERF 0x0001
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#define NFSCLDS_MDS 0x0002
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#define NFSCLDS_DS 0x0004
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struct nfsclclient {
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LIST_ENTRY(nfsclclient) nfsc_list;
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struct nfsclownerhead nfsc_owner;
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struct nfscldeleghead nfsc_deleg;
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struct nfscldeleghash nfsc_deleghash[NFSCLDELEGHASHSIZE];
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struct nfscllayouthead nfsc_layout;
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struct nfscllayouthash nfsc_layouthash[NFSCLLAYOUTHASHSIZE];
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struct nfscldevinfohead nfsc_devinfo;
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struct nfsv4lock nfsc_lock;
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struct proc *nfsc_renewthread;
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struct nfsmount *nfsc_nmp;
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time_t nfsc_expire;
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u_int32_t nfsc_clientidrev;
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u_int32_t nfsc_rev;
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u_int32_t nfsc_renew;
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u_int32_t nfsc_cbident;
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u_int16_t nfsc_flags;
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u_int16_t nfsc_idlen;
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u_int8_t nfsc_id[1]; /* Malloc'd to correct length */
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};
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/*
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* Bits for nfsc_flags.
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*/
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#define NFSCLFLAGS_INITED 0x0001
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#define NFSCLFLAGS_HASCLIENTID 0x0002
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#define NFSCLFLAGS_RECOVER 0x0004
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#define NFSCLFLAGS_UMOUNT 0x0008
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#define NFSCLFLAGS_HASTHREAD 0x0010
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#define NFSCLFLAGS_AFINET6 0x0020
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#define NFSCLFLAGS_EXPIREIT 0x0040
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#define NFSCLFLAGS_FIRSTDELEG 0x0080
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#define NFSCLFLAGS_GOTDELEG 0x0100
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#define NFSCLFLAGS_RECVRINPROG 0x0200
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struct nfsclowner {
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LIST_ENTRY(nfsclowner) nfsow_list;
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struct nfsclopenhead nfsow_open;
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struct nfsclclient *nfsow_clp;
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u_int32_t nfsow_seqid;
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u_int32_t nfsow_defunct;
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struct nfsv4lock nfsow_rwlock;
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u_int8_t nfsow_owner[NFSV4CL_LOCKNAMELEN];
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};
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/*
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* MALLOC'd to the correct length to accommodate the file handle.
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*/
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struct nfscldeleg {
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TAILQ_ENTRY(nfscldeleg) nfsdl_list;
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LIST_ENTRY(nfscldeleg) nfsdl_hash;
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struct nfsclownerhead nfsdl_owner; /* locally issued state */
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struct nfscllockownerhead nfsdl_lock;
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nfsv4stateid_t nfsdl_stateid;
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struct acl_entry nfsdl_ace; /* Delegation ace */
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struct nfsclclient *nfsdl_clp;
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struct nfsv4lock nfsdl_rwlock; /* for active I/O ops */
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struct nfscred nfsdl_cred; /* Cred. used for Open */
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time_t nfsdl_timestamp; /* used for stale cleanup */
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u_int64_t nfsdl_sizelimit; /* Limit for file growth */
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u_int64_t nfsdl_size; /* saved copy of file size */
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u_int64_t nfsdl_change; /* and change attribute */
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struct timespec nfsdl_modtime; /* local modify time */
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u_int16_t nfsdl_fhlen;
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u_int8_t nfsdl_flags;
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u_int8_t nfsdl_fh[1]; /* must be last */
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};
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/*
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* nfsdl_flags bits.
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*/
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#define NFSCLDL_READ 0x01
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#define NFSCLDL_WRITE 0x02
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#define NFSCLDL_RECALL 0x04
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#define NFSCLDL_NEEDRECLAIM 0x08
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#define NFSCLDL_ZAPPED 0x10
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#define NFSCLDL_MODTIMESET 0x20
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#define NFSCLDL_DELEGRET 0x40
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/*
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* MALLOC'd to the correct length to accommodate the file handle.
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*/
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struct nfsclopen {
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LIST_ENTRY(nfsclopen) nfso_list;
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struct nfscllockownerhead nfso_lock;
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nfsv4stateid_t nfso_stateid;
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struct nfsclowner *nfso_own;
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struct nfscred nfso_cred; /* Cred. used for Open */
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u_int32_t nfso_mode;
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u_int32_t nfso_opencnt;
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u_int16_t nfso_fhlen;
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u_int8_t nfso_posixlock; /* 1 for POSIX type locking */
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u_int8_t nfso_fh[1]; /* must be last */
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};
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/*
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* Return values for nfscl_open(). NFSCLOPEN_OK must == 0.
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*/
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#define NFSCLOPEN_OK 0
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#define NFSCLOPEN_DOOPEN 1
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#define NFSCLOPEN_DOOPENDOWNGRADE 2
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#define NFSCLOPEN_SETCRED 3
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struct nfscllockowner {
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LIST_ENTRY(nfscllockowner) nfsl_list;
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struct nfscllockhead nfsl_lock;
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struct nfsclopen *nfsl_open;
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NFSPROC_T *nfsl_inprog;
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nfsv4stateid_t nfsl_stateid;
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int nfsl_lockflags;
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u_int32_t nfsl_seqid;
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struct nfsv4lock nfsl_rwlock;
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u_int8_t nfsl_owner[NFSV4CL_LOCKNAMELEN];
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u_int8_t nfsl_openowner[NFSV4CL_LOCKNAMELEN];
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};
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/*
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* Byte range entry for the above lock owner.
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*/
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struct nfscllock {
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LIST_ENTRY(nfscllock) nfslo_list;
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u_int64_t nfslo_first;
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u_int64_t nfslo_end;
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short nfslo_type;
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};
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/* This structure is used to collect a list of lockowners to free up. */
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struct nfscllockownerfh {
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SLIST_ENTRY(nfscllockownerfh) nfslfh_list;
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struct nfscllockownerhead nfslfh_lock;
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int nfslfh_len;
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uint8_t nfslfh_fh[NFSX_V4FHMAX];
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};
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/*
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* MALLOC'd to the correct length to accommodate the file handle.
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*/
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struct nfscllayout {
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TAILQ_ENTRY(nfscllayout) nfsly_list;
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LIST_ENTRY(nfscllayout) nfsly_hash;
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nfsv4stateid_t nfsly_stateid;
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struct nfsv4lock nfsly_lock;
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uint64_t nfsly_filesid[2];
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uint64_t nfsly_lastbyte;
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struct nfsclflayouthead nfsly_flayread;
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struct nfsclflayouthead nfsly_flayrw;
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struct nfsclrecalllayouthead nfsly_recall;
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time_t nfsly_timestamp;
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struct nfsclclient *nfsly_clp;
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uint16_t nfsly_flags;
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uint16_t nfsly_fhlen;
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uint8_t nfsly_fh[1];
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};
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/*
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* Flags for nfsly_flags.
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*/
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#define NFSLY_FILES 0x0001
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#define NFSLY_BLOCK 0x0002
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#define NFSLY_OBJECT 0x0004
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#define NFSLY_RECALL 0x0008
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#define NFSLY_RECALLFILE 0x0010
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#define NFSLY_RECALLFSID 0x0020
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#define NFSLY_RECALLALL 0x0040
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#define NFSLY_RETONCLOSE 0x0080
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#define NFSLY_WRITTEN 0x0100 /* Has been used to write to a DS. */
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/*
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* MALLOC'd to the correct length to accommodate the file handle list.
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* These hang off of nfsly_flayread and nfsly_flayrw, sorted in increasing
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* offset order.
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* The nfsly_flayread list holds the ones with iomode == NFSLAYOUTIOMODE_READ,
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* whereas the nfsly_flayrw holds the ones with iomode == NFSLAYOUTIOMODE_RW.
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*/
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struct nfsclflayout {
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LIST_ENTRY(nfsclflayout) nfsfl_list;
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uint8_t nfsfl_dev[NFSX_V4DEVICEID];
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uint64_t nfsfl_off;
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uint64_t nfsfl_end;
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uint64_t nfsfl_patoff;
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struct nfscldevinfo *nfsfl_devp;
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uint32_t nfsfl_iomode;
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uint32_t nfsfl_util;
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uint32_t nfsfl_stripe1;
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uint16_t nfsfl_flags;
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uint16_t nfsfl_fhcnt;
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struct nfsfh *nfsfl_fh[1]; /* FH list for DS */
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};
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/*
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* Flags for nfsfl_flags.
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*/
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#define NFSFL_RECALL 0x0001 /* File layout has been recalled */
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/*
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* Structure that is used to store a LAYOUTRECALL.
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*/
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struct nfsclrecalllayout {
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LIST_ENTRY(nfsclrecalllayout) nfsrecly_list;
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uint64_t nfsrecly_off;
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uint64_t nfsrecly_len;
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int nfsrecly_recalltype;
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uint32_t nfsrecly_iomode;
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uint32_t nfsrecly_stateseqid;
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};
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/*
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* Stores the NFSv4.1 Device Info. Malloc'd to the correct length to
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* store the list of network connections and list of indices.
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* nfsdi_data[] is allocated the following way:
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* - nfsdi_addrcnt * struct nfsclds
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* - stripe indices, each stored as one byte, since there can be many
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* of them. (This implies a limit of 256 on nfsdi_addrcnt, since the
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* indices select which address.)
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*/
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struct nfscldevinfo {
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LIST_ENTRY(nfscldevinfo) nfsdi_list;
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uint8_t nfsdi_deviceid[NFSX_V4DEVICEID];
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struct nfsclclient *nfsdi_clp;
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uint32_t nfsdi_refcnt;
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uint32_t nfsdi_layoutrefs;
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uint16_t nfsdi_stripecnt;
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uint16_t nfsdi_addrcnt;
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struct nfsclds *nfsdi_data[0];
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};
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/* These inline functions return values from nfsdi_data[]. */
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/*
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* Return a pointer to the address at "pos".
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*/
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static __inline struct nfsclds **
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nfsfldi_addr(struct nfscldevinfo *ndi, int pos)
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{
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if (pos >= ndi->nfsdi_addrcnt)
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return (NULL);
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return (&ndi->nfsdi_data[pos]);
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}
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/*
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* Return the Nth ("pos") stripe index.
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*/
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static __inline int
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nfsfldi_stripeindex(struct nfscldevinfo *ndi, int pos)
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{
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uint8_t *valp;
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if (pos >= ndi->nfsdi_stripecnt)
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return (-1);
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valp = (uint8_t *)&ndi->nfsdi_data[ndi->nfsdi_addrcnt];
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valp += pos;
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return ((int)*valp);
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}
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/*
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* Set the Nth ("pos") stripe index to "val".
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*/
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static __inline void
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nfsfldi_setstripeindex(struct nfscldevinfo *ndi, int pos, uint8_t val)
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{
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uint8_t *valp;
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if (pos >= ndi->nfsdi_stripecnt)
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return;
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valp = (uint8_t *)&ndi->nfsdi_data[ndi->nfsdi_addrcnt];
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valp += pos;
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*valp = val;
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}
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/*
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* Macro for incrementing the seqid#.
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*/
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#define NFSCL_INCRSEQID(s, n) do { \
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if (((n)->nd_flag & ND_INCRSEQID)) \
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(s)++; \
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} while (0)
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#endif /* _NFS_NFSCLSTATE_H_ */
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