625 lines
18 KiB
C
625 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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#define CURRENT_STATE_ID_FLAG (1<<0)
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#define SAVED_STATE_ID_FLAG (1<<1)
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#define SET_STATE_ID(c, f) ((c)->sid_flags |= (f))
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#define HAS_STATE_ID(c, f) ((c)->sid_flags & (f))
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#define CLEAR_STATE_ID(c, f) ((c)->sid_flags &= ~(f))
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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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__be32 status;
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stateid_t current_stateid;
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stateid_t save_stateid;
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/* to indicate current and saved state id presents */
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u32 sid_flags;
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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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};
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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 xdr_netobj ld_owner;
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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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};
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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 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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};
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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_why_no_deleg; /* response - DELEG_NONE_EXT only */
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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 op_verf __attribute__((aligned(32)));
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/* 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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u32 op_deleg_want; /* 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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bool op_truncate; /* used during processing */
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bool op_created; /* used during processing */
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struct nfs4_openowner *op_openowner; /* used during processing */
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struct nfs4_file *op_file; /* used during processing */
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struct nfs4_ol_stateid *op_stp; /* 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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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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};
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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; /* request */
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u32 od_deleg_want; /* request */
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u32 od_share_deny; /* request */
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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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struct xdr_netobj se_name;
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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_id {
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__be32 ts_id_status;
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stateid_t ts_id_stateid;
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struct list_head ts_id_list;
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};
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struct nfsd4_test_stateid {
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u32 ts_num_ids;
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struct list_head ts_stateid_list;
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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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struct kvec wr_head;
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struct page ** wr_pagelist; /* request */
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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_destroy_clientid {
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clientid_t clientid;
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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_backchannel_ctl backchannel_ctl;
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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_flags & NFSD4_SLOT_CACHETHIS)
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|| 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
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set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
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{
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BUG_ON(!fhp->fh_pre_saved);
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cinfo->atomic = fhp->fh_post_saved;
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cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
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cinfo->before_change = fhp->fh_pre_change;
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cinfo->after_change = fhp->fh_post_change;
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cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
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cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
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cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
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cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
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}
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int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
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int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
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struct nfsd4_compoundargs *);
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int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
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struct nfsd4_compoundres *);
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__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
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void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
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void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
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__be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
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struct dentry *dentry, __be32 *buffer, int *countp,
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|
u32 *bmval, struct svc_rqst *, int ignore_crossmnt);
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extern __be32 nfsd4_setclientid(struct svc_rqst *rqstp,
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|
struct nfsd4_compound_state *,
|
|
struct nfsd4_setclientid *setclid);
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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);
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|
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_backchannel_ctl(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_backchannel_ctl *);
|
|
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 *);
|
|
extern __be32 nfsd4_destroy_clientid(struct svc_rqst *, struct nfsd4_compound_state *, struct nfsd4_destroy_clientid *);
|
|
__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, struct nfsd_net *nn);
|
|
extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
|
|
struct svc_fh *current_fh, struct nfsd4_open *open);
|
|
extern void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status);
|
|
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:
|
|
*/
|