1091006c5e
It's sort of ridiculous that we've never had a working reply cache for NFSv4. On the other hand, we may still not: our current reply cache is likely not very good, especially in the TCP case (which is the only case that matters for v4). What we really need here is some serious testing. Anyway, here's a start. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
601 lines
18 KiB
C
601 lines
18 KiB
C
/*
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* Server-side types for NFSv4.
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*
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* Copyright (c) 2002 The Regents of the University of Michigan.
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* All rights reserved.
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*
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* Kendrick Smith <kmsmith@umich.edu>
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* Andy Adamson <andros@umich.edu>
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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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*
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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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* 3. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _LINUX_NFSD_XDR4_H
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#define _LINUX_NFSD_XDR4_H
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#include "state.h"
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#include "nfsd.h"
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#define NFSD4_MAX_TAGLEN 128
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#define XDR_LEN(n) (((n) + 3) & ~3)
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struct nfsd4_compound_state {
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struct svc_fh current_fh;
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struct svc_fh save_fh;
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struct nfs4_stateowner *replay_owner;
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/* For sessions DRC */
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struct nfsd4_session *session;
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struct nfsd4_slot *slot;
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__be32 *datap;
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size_t iovlen;
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u32 minorversion;
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u32 status;
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};
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static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
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{
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return cs->slot != NULL;
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}
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struct nfsd4_change_info {
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u32 atomic;
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bool change_supported;
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u32 before_ctime_sec;
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u32 before_ctime_nsec;
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u64 before_change;
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u32 after_ctime_sec;
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u32 after_ctime_nsec;
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u64 after_change;
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};
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struct nfsd4_access {
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u32 ac_req_access; /* request */
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u32 ac_supported; /* response */
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u32 ac_resp_access; /* response */
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};
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struct nfsd4_close {
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u32 cl_seqid; /* request */
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stateid_t cl_stateid; /* request+response */
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struct nfs4_stateowner * cl_stateowner; /* response */
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};
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struct nfsd4_commit {
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u64 co_offset; /* request */
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u32 co_count; /* request */
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nfs4_verifier co_verf; /* response */
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};
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struct nfsd4_create {
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u32 cr_namelen; /* request */
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char * cr_name; /* request */
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u32 cr_type; /* request */
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union { /* request */
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struct {
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u32 namelen;
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char *name;
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} link; /* NF4LNK */
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struct {
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u32 specdata1;
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u32 specdata2;
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} dev; /* NF4BLK, NF4CHR */
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} u;
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u32 cr_bmval[3]; /* request */
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struct iattr cr_iattr; /* request */
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struct nfsd4_change_info cr_cinfo; /* response */
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struct nfs4_acl *cr_acl;
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};
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#define cr_linklen u.link.namelen
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#define cr_linkname u.link.name
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#define cr_specdata1 u.dev.specdata1
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#define cr_specdata2 u.dev.specdata2
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struct nfsd4_delegreturn {
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stateid_t dr_stateid;
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};
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struct nfsd4_getattr {
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u32 ga_bmval[3]; /* request */
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struct svc_fh *ga_fhp; /* response */
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};
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struct nfsd4_link {
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u32 li_namelen; /* request */
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char * li_name; /* request */
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struct nfsd4_change_info li_cinfo; /* response */
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};
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struct nfsd4_lock_denied {
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clientid_t ld_clientid;
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struct nfs4_stateowner *ld_sop;
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u64 ld_start;
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u64 ld_length;
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u32 ld_type;
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};
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struct nfsd4_lock {
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/* request */
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u32 lk_type;
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u32 lk_reclaim; /* boolean */
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u64 lk_offset;
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u64 lk_length;
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u32 lk_is_new;
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union {
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struct {
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u32 open_seqid;
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stateid_t open_stateid;
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u32 lock_seqid;
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clientid_t clientid;
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struct xdr_netobj owner;
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} new;
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struct {
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stateid_t lock_stateid;
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u32 lock_seqid;
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} old;
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} v;
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/* response */
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union {
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struct {
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stateid_t stateid;
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} ok;
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struct nfsd4_lock_denied denied;
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} u;
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/* The lk_replay_owner is the open owner in the open_to_lock_owner
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* case and the lock owner otherwise: */
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struct nfs4_stateowner *lk_replay_owner;
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};
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#define lk_new_open_seqid v.new.open_seqid
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#define lk_new_open_stateid v.new.open_stateid
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#define lk_new_lock_seqid v.new.lock_seqid
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#define lk_new_clientid v.new.clientid
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#define lk_new_owner v.new.owner
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#define lk_old_lock_stateid v.old.lock_stateid
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#define lk_old_lock_seqid v.old.lock_seqid
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#define lk_rflags u.ok.rflags
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#define lk_resp_stateid u.ok.stateid
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#define lk_denied u.denied
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struct nfsd4_lockt {
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u32 lt_type;
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clientid_t lt_clientid;
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struct xdr_netobj lt_owner;
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u64 lt_offset;
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u64 lt_length;
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struct nfs4_stateowner * lt_stateowner;
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struct nfsd4_lock_denied lt_denied;
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};
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struct nfsd4_locku {
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u32 lu_type;
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u32 lu_seqid;
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stateid_t lu_stateid;
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u64 lu_offset;
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u64 lu_length;
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struct nfs4_stateowner *lu_stateowner;
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};
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struct nfsd4_lookup {
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u32 lo_len; /* request */
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char * lo_name; /* request */
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};
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struct nfsd4_putfh {
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u32 pf_fhlen; /* request */
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char *pf_fhval; /* request */
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};
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struct nfsd4_open {
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u32 op_claim_type; /* request */
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struct xdr_netobj op_fname; /* request - everything but CLAIM_PREV */
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u32 op_delegate_type; /* request - CLAIM_PREV only */
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stateid_t op_delegate_stateid; /* request - response */
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u32 op_create; /* request */
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u32 op_createmode; /* request */
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u32 op_bmval[3]; /* request */
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struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
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nfs4_verifier verf; /* EXCLUSIVE4 */
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clientid_t op_clientid; /* request */
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struct xdr_netobj op_owner; /* request */
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u32 op_seqid; /* request */
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u32 op_share_access; /* request */
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u32 op_share_deny; /* request */
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stateid_t op_stateid; /* response */
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u32 op_recall; /* recall */
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struct nfsd4_change_info op_cinfo; /* response */
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u32 op_rflags; /* response */
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int op_truncate; /* used during processing */
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struct nfs4_stateowner *op_stateowner; /* used during processing */
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struct nfs4_acl *op_acl;
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};
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#define op_iattr iattr
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#define op_verf verf
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struct nfsd4_open_confirm {
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stateid_t oc_req_stateid /* request */;
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u32 oc_seqid /* request */;
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stateid_t oc_resp_stateid /* response */;
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struct nfs4_stateowner * oc_stateowner; /* response */
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};
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struct nfsd4_open_downgrade {
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stateid_t od_stateid;
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u32 od_seqid;
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u32 od_share_access;
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u32 od_share_deny;
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struct nfs4_stateowner *od_stateowner;
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};
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struct nfsd4_read {
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stateid_t rd_stateid; /* request */
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u64 rd_offset; /* request */
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u32 rd_length; /* request */
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int rd_vlen;
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struct file *rd_filp;
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struct svc_rqst *rd_rqstp; /* response */
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struct svc_fh * rd_fhp; /* response */
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};
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struct nfsd4_readdir {
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u64 rd_cookie; /* request */
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nfs4_verifier rd_verf; /* request */
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u32 rd_dircount; /* request */
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u32 rd_maxcount; /* request */
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u32 rd_bmval[3]; /* request */
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struct svc_rqst *rd_rqstp; /* response */
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struct svc_fh * rd_fhp; /* response */
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struct readdir_cd common;
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__be32 * buffer;
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int buflen;
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__be32 * offset;
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};
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struct nfsd4_release_lockowner {
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clientid_t rl_clientid;
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struct xdr_netobj rl_owner;
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};
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struct nfsd4_readlink {
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struct svc_rqst *rl_rqstp; /* request */
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struct svc_fh * rl_fhp; /* request */
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};
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struct nfsd4_remove {
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u32 rm_namelen; /* request */
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char * rm_name; /* request */
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struct nfsd4_change_info rm_cinfo; /* response */
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};
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struct nfsd4_rename {
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u32 rn_snamelen; /* request */
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char * rn_sname; /* request */
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u32 rn_tnamelen; /* request */
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char * rn_tname; /* request */
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struct nfsd4_change_info rn_sinfo; /* response */
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struct nfsd4_change_info rn_tinfo; /* response */
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};
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struct nfsd4_secinfo {
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u32 si_namelen; /* request */
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char *si_name; /* request */
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struct svc_export *si_exp; /* response */
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};
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struct nfsd4_secinfo_no_name {
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u32 sin_style; /* request */
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struct svc_export *sin_exp; /* response */
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};
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struct nfsd4_setattr {
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stateid_t sa_stateid; /* request */
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u32 sa_bmval[3]; /* request */
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struct iattr sa_iattr; /* request */
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struct nfs4_acl *sa_acl;
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};
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struct nfsd4_setclientid {
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nfs4_verifier se_verf; /* request */
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u32 se_namelen; /* request */
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char * se_name; /* request */
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u32 se_callback_prog; /* request */
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u32 se_callback_netid_len; /* request */
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char * se_callback_netid_val; /* request */
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u32 se_callback_addr_len; /* request */
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char * se_callback_addr_val; /* request */
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u32 se_callback_ident; /* request */
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clientid_t se_clientid; /* response */
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nfs4_verifier se_confirm; /* response */
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};
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struct nfsd4_setclientid_confirm {
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clientid_t sc_clientid;
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nfs4_verifier sc_confirm;
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};
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struct nfsd4_saved_compoundargs {
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__be32 *p;
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__be32 *end;
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int pagelen;
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struct page **pagelist;
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};
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struct nfsd4_test_stateid {
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__be32 ts_num_ids;
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__be32 ts_has_session;
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struct nfsd4_compoundargs *ts_saved_args;
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struct nfsd4_saved_compoundargs ts_savedp;
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};
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struct nfsd4_free_stateid {
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stateid_t fr_stateid; /* request */
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__be32 fr_status; /* response */
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};
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/* also used for NVERIFY */
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struct nfsd4_verify {
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u32 ve_bmval[3]; /* request */
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u32 ve_attrlen; /* request */
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char * ve_attrval; /* request */
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};
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struct nfsd4_write {
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stateid_t wr_stateid; /* request */
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u64 wr_offset; /* request */
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u32 wr_stable_how; /* request */
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u32 wr_buflen; /* request */
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int wr_vlen;
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u32 wr_bytes_written; /* response */
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u32 wr_how_written; /* response */
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nfs4_verifier wr_verifier; /* response */
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};
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struct nfsd4_exchange_id {
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nfs4_verifier verifier;
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struct xdr_netobj clname;
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u32 flags;
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clientid_t clientid;
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u32 seqid;
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int spa_how;
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};
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struct nfsd4_sequence {
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struct nfs4_sessionid sessionid; /* request/response */
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u32 seqid; /* request/response */
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u32 slotid; /* request/response */
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u32 maxslots; /* request/response */
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u32 cachethis; /* request */
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#if 0
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u32 target_maxslots; /* response */
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#endif /* not yet */
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u32 status_flags; /* response */
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};
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struct nfsd4_destroy_session {
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struct nfs4_sessionid sessionid;
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};
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struct nfsd4_reclaim_complete {
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u32 rca_one_fs;
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};
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struct nfsd4_op {
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int opnum;
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__be32 status;
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union {
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struct nfsd4_access access;
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struct nfsd4_close close;
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struct nfsd4_commit commit;
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struct nfsd4_create create;
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struct nfsd4_delegreturn delegreturn;
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struct nfsd4_getattr getattr;
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struct svc_fh * getfh;
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struct nfsd4_link link;
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struct nfsd4_lock lock;
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struct nfsd4_lockt lockt;
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struct nfsd4_locku locku;
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struct nfsd4_lookup lookup;
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struct nfsd4_verify nverify;
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struct nfsd4_open open;
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struct nfsd4_open_confirm open_confirm;
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struct nfsd4_open_downgrade open_downgrade;
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struct nfsd4_putfh putfh;
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struct nfsd4_read read;
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struct nfsd4_readdir readdir;
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struct nfsd4_readlink readlink;
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struct nfsd4_remove remove;
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struct nfsd4_rename rename;
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clientid_t renew;
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struct nfsd4_secinfo secinfo;
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struct nfsd4_setattr setattr;
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struct nfsd4_setclientid setclientid;
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struct nfsd4_setclientid_confirm setclientid_confirm;
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struct nfsd4_verify verify;
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struct nfsd4_write write;
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struct nfsd4_release_lockowner release_lockowner;
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/* NFSv4.1 */
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struct nfsd4_exchange_id exchange_id;
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struct nfsd4_bind_conn_to_session bind_conn_to_session;
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struct nfsd4_create_session create_session;
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struct nfsd4_destroy_session destroy_session;
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struct nfsd4_sequence sequence;
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struct nfsd4_reclaim_complete reclaim_complete;
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struct nfsd4_test_stateid test_stateid;
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struct nfsd4_free_stateid free_stateid;
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} u;
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struct nfs4_replay * replay;
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};
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bool nfsd4_cache_this_op(struct nfsd4_op *);
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struct nfsd4_compoundargs {
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/* scratch variables for XDR decode */
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__be32 * p;
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__be32 * end;
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struct page ** pagelist;
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int pagelen;
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__be32 tmp[8];
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__be32 * tmpp;
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struct tmpbuf {
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struct tmpbuf *next;
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void (*release)(const void *);
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void *buf;
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} *to_free;
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struct svc_rqst *rqstp;
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u32 taglen;
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char * tag;
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u32 minorversion;
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u32 opcnt;
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struct nfsd4_op *ops;
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struct nfsd4_op iops[8];
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int cachetype;
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};
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struct nfsd4_compoundres {
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/* scratch variables for XDR encode */
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__be32 * p;
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__be32 * end;
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struct xdr_buf * xbuf;
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struct svc_rqst * rqstp;
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u32 taglen;
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char * tag;
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u32 opcnt;
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__be32 * tagp; /* tag, opcount encode location */
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struct nfsd4_compound_state cstate;
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};
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static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
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{
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struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
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return resp->opcnt == 1 && args->ops[0].opnum == OP_SEQUENCE;
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}
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static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
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{
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return !resp->cstate.slot->sl_cachethis || nfsd4_is_solo_sequence(resp);
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|
}
|
|
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#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
|
|
|
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static inline void
|
|
set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
|
|
{
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|
BUG_ON(!fhp->fh_pre_saved);
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|
cinfo->atomic = fhp->fh_post_saved;
|
|
cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
|
|
|
|
cinfo->before_change = fhp->fh_pre_change;
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|
cinfo->after_change = fhp->fh_post_change;
|
|
cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
|
|
cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
|
|
cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
|
|
cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
|
|
|
|
}
|
|
|
|
int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
|
|
int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
|
|
struct nfsd4_compoundargs *);
|
|
int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
|
|
struct nfsd4_compoundres *);
|
|
void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
|
|
void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
|
|
__be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
|
|
struct dentry *dentry, __be32 *buffer, int *countp,
|
|
u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
|
|
extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_setclientid *setclid);
|
|
extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_setclientid_confirm *setclientid_confirm);
|
|
extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
|
|
extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
|
|
struct nfsd4_sequence *seq);
|
|
extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *, struct nfsd4_exchange_id *);
|
|
extern __be32 nfsd4_bind_conn_to_session(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_bind_conn_to_session *);
|
|
extern __be32 nfsd4_create_session(struct svc_rqst *,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_create_session *);
|
|
extern __be32 nfsd4_sequence(struct svc_rqst *,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_sequence *);
|
|
extern __be32 nfsd4_destroy_session(struct svc_rqst *,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_destroy_session *);
|
|
__be32 nfsd4_reclaim_complete(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_reclaim_complete *);
|
|
extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
|
|
struct nfsd4_open *open);
|
|
extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
|
|
struct svc_fh *current_fh, struct nfsd4_open *open);
|
|
extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc);
|
|
extern __be32 nfsd4_close(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_close *close);
|
|
extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_open_downgrade *od);
|
|
extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
|
|
struct nfsd4_lock *lock);
|
|
extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_lockt *lockt);
|
|
extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_locku *locku);
|
|
extern __be32
|
|
nfsd4_release_lockowner(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *,
|
|
struct nfsd4_release_lockowner *rlockowner);
|
|
extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
|
|
extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
|
|
extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *, clientid_t *clid);
|
|
extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
|
|
extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
|
|
#endif
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|