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https://github.com/Fishwaldo/Star64_linux.git
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[PATCH] NFS: Header file cleanup...
- Move NFSv4 state definitions into a private header file. - Clean up gunk in nfs_fs.h Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
parent
9085bbcb76
commit
4ce79717ce
13 changed files with 264 additions and 260 deletions
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@ -14,6 +14,7 @@
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/svcsock.h>
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#include <linux/sunrpc/svcsock.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_fs.h>
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#include "nfs4_fs.h"
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#include "callback.h"
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#include "callback.h"
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#define NFSDBG_FACILITY NFSDBG_CALLBACK
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#define NFSDBG_FACILITY NFSDBG_CALLBACK
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@ -8,6 +8,7 @@
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/nfs4.h>
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#include <linux/nfs4.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_fs.h>
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#include "nfs4_fs.h"
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#include "callback.h"
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#include "callback.h"
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#include "delegation.h"
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#include "delegation.h"
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@ -10,6 +10,7 @@
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/nfs4.h>
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#include <linux/nfs4.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_fs.h>
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#include "nfs4_fs.h"
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#include "callback.h"
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#include "callback.h"
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#define CB_OP_TAGLEN_MAXSZ (512)
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#define CB_OP_TAGLEN_MAXSZ (512)
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@ -16,6 +16,7 @@
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#include <linux/nfs_fs.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_xdr.h>
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#include <linux/nfs_xdr.h>
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#include "nfs4_fs.h"
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#include "delegation.h"
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#include "delegation.h"
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static struct nfs_delegation *nfs_alloc_delegation(void)
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static struct nfs_delegation *nfs_alloc_delegation(void)
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@ -32,6 +32,7 @@
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#include <linux/smp_lock.h>
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#include <linux/smp_lock.h>
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#include <linux/namei.h>
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#include <linux/namei.h>
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#include "nfs4_fs.h"
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#include "delegation.h"
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#include "delegation.h"
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#define NFS_PARANOIA 1
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#define NFS_PARANOIA 1
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@ -50,6 +50,7 @@
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#include <linux/nfs_fs.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_idmap.h>
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#include <linux/nfs_idmap.h>
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#include "nfs4_fs.h"
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#define IDMAP_HASH_SZ 128
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#define IDMAP_HASH_SZ 128
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@ -39,6 +39,7 @@
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#include <asm/system.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include "nfs4_fs.h"
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#include "delegation.h"
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#include "delegation.h"
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#define NFSDBG_FACILITY NFSDBG_VFS
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#define NFSDBG_FACILITY NFSDBG_VFS
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250
fs/nfs/nfs4_fs.h
Normal file
250
fs/nfs/nfs4_fs.h
Normal file
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@ -0,0 +1,250 @@
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/*
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* linux/fs/nfs/nfs4_fs.h
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*
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* Copyright (C) 2005 Trond Myklebust
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*
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* NFSv4-specific filesystem definitions and declarations
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*/
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#ifndef __LINUX_FS_NFS_NFS4_FS_H
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#define __LINUX_FS_NFS_NFS4_FS_H
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#ifdef CONFIG_NFS_V4
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struct idmap;
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/*
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* In a seqid-mutating op, this macro controls which error return
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* values trigger incrementation of the seqid.
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*
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* from rfc 3010:
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* The client MUST monotonically increment the sequence number for the
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* CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
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* operations. This is true even in the event that the previous
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* operation that used the sequence number received an error. The only
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* exception to this rule is if the previous operation received one of
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* the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
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* NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
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* NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
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*
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*/
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#define seqid_mutating_err(err) \
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(((err) != NFSERR_STALE_CLIENTID) && \
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((err) != NFSERR_STALE_STATEID) && \
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((err) != NFSERR_BAD_STATEID) && \
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((err) != NFSERR_BAD_SEQID) && \
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((err) != NFSERR_BAD_XDR) && \
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((err) != NFSERR_RESOURCE) && \
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((err) != NFSERR_NOFILEHANDLE))
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enum nfs4_client_state {
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NFS4CLNT_OK = 0,
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};
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/*
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* The nfs4_client identifies our client state to the server.
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*/
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struct nfs4_client {
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struct list_head cl_servers; /* Global list of servers */
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struct in_addr cl_addr; /* Server identifier */
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u64 cl_clientid; /* constant */
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nfs4_verifier cl_confirm;
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unsigned long cl_state;
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u32 cl_lockowner_id;
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/*
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* The following rwsem ensures exclusive access to the server
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* while we recover the state following a lease expiration.
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*/
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struct rw_semaphore cl_sem;
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struct list_head cl_delegations;
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struct list_head cl_state_owners;
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struct list_head cl_unused;
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int cl_nunused;
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spinlock_t cl_lock;
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atomic_t cl_count;
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struct rpc_clnt * cl_rpcclient;
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struct rpc_cred * cl_cred;
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struct list_head cl_superblocks; /* List of nfs_server structs */
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unsigned long cl_lease_time;
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unsigned long cl_last_renewal;
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struct work_struct cl_renewd;
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struct work_struct cl_recoverd;
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wait_queue_head_t cl_waitq;
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struct rpc_wait_queue cl_rpcwaitq;
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/* used for the setclientid verifier */
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struct timespec cl_boot_time;
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/* idmapper */
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struct idmap * cl_idmap;
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/* Our own IP address, as a null-terminated string.
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* This is used to generate the clientid, and the callback address.
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*/
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char cl_ipaddr[16];
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unsigned char cl_id_uniquifier;
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};
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/*
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* NFS4 state_owners and lock_owners are simply labels for ordered
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* sequences of RPC calls. Their sole purpose is to provide once-only
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* semantics by allowing the server to identify replayed requests.
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*
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* The ->so_sema is held during all state_owner seqid-mutating operations:
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* OPEN, OPEN_DOWNGRADE, and CLOSE. Its purpose is to properly serialize
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* so_seqid.
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*/
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struct nfs4_state_owner {
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struct list_head so_list; /* per-clientid list of state_owners */
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struct nfs4_client *so_client;
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u32 so_id; /* 32-bit identifier, unique */
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struct semaphore so_sema;
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u32 so_seqid; /* protected by so_sema */
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atomic_t so_count;
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struct rpc_cred *so_cred; /* Associated cred */
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struct list_head so_states;
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struct list_head so_delegations;
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};
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/*
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* struct nfs4_state maintains the client-side state for a given
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* (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
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*
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* OPEN:
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* In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
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* we need to know how many files are open for reading or writing on a
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* given inode. This information too is stored here.
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*
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* LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
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*/
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struct nfs4_lock_state {
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struct list_head ls_locks; /* Other lock stateids */
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fl_owner_t ls_owner; /* POSIX lock owner */
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#define NFS_LOCK_INITIALIZED 1
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int ls_flags;
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u32 ls_seqid;
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u32 ls_id;
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nfs4_stateid ls_stateid;
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atomic_t ls_count;
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};
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/* bits for nfs4_state->flags */
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enum {
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LK_STATE_IN_USE,
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NFS_DELEGATED_STATE,
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};
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struct nfs4_state {
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struct list_head open_states; /* List of states for the same state_owner */
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struct list_head inode_states; /* List of states for the same inode */
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struct list_head lock_states; /* List of subservient lock stateids */
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struct nfs4_state_owner *owner; /* Pointer to the open owner */
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struct inode *inode; /* Pointer to the inode */
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unsigned long flags; /* Do we hold any locks? */
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struct semaphore lock_sema; /* Serializes file locking operations */
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rwlock_t state_lock; /* Protects the lock_states list */
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nfs4_stateid stateid;
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unsigned int nreaders;
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unsigned int nwriters;
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int state; /* State on the server (R,W, or RW) */
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atomic_t count;
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};
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struct nfs4_exception {
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long timeout;
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int retry;
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};
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struct nfs4_state_recovery_ops {
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int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
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int (*recover_lock)(struct nfs4_state *, struct file_lock *);
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};
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extern struct dentry_operations nfs4_dentry_operations;
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extern struct inode_operations nfs4_dir_inode_operations;
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/* nfs4proc.c */
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extern int nfs4_map_errors(int err);
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extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short);
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extern int nfs4_proc_setclientid_confirm(struct nfs4_client *);
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extern int nfs4_proc_async_renew(struct nfs4_client *);
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extern int nfs4_proc_renew(struct nfs4_client *);
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extern int nfs4_do_close(struct inode *inode, struct nfs4_state *state, mode_t mode);
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extern struct inode *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
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extern int nfs4_open_revalidate(struct inode *, struct dentry *, int);
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extern struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops;
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extern struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops;
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extern const u32 nfs4_fattr_bitmap[2];
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extern const u32 nfs4_statfs_bitmap[2];
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extern const u32 nfs4_pathconf_bitmap[2];
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extern const u32 nfs4_fsinfo_bitmap[2];
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/* nfs4renewd.c */
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extern void nfs4_schedule_state_renewal(struct nfs4_client *);
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extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
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extern void nfs4_kill_renewd(struct nfs4_client *);
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extern void nfs4_renew_state(void *);
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/* nfs4state.c */
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extern void init_nfsv4_state(struct nfs_server *);
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extern void destroy_nfsv4_state(struct nfs_server *);
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extern struct nfs4_client *nfs4_get_client(struct in_addr *);
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extern void nfs4_put_client(struct nfs4_client *clp);
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extern int nfs4_init_client(struct nfs4_client *clp);
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extern struct nfs4_client *nfs4_find_client(struct in_addr *);
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extern u32 nfs4_alloc_lockowner_id(struct nfs4_client *);
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extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
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extern void nfs4_put_state_owner(struct nfs4_state_owner *);
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extern void nfs4_drop_state_owner(struct nfs4_state_owner *);
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extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
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extern void nfs4_put_open_state(struct nfs4_state *);
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extern void nfs4_close_state(struct nfs4_state *, mode_t);
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extern struct nfs4_state *nfs4_find_state(struct inode *, struct rpc_cred *, mode_t mode);
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extern void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp);
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extern void nfs4_schedule_state_recovery(struct nfs4_client *);
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extern struct nfs4_lock_state *nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t);
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extern struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t);
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extern void nfs4_put_lock_state(struct nfs4_lock_state *state);
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extern void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *ls);
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extern void nfs4_notify_setlk(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
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extern void nfs4_notify_unlck(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
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extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
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extern const nfs4_stateid zero_stateid;
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/* nfs4xdr.c */
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extern uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus);
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extern struct rpc_procinfo nfs4_procedures[];
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struct nfs4_mount_data;
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/* callback_xdr.c */
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extern struct svc_version nfs4_callback_version1;
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#else
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#define init_nfsv4_state(server) do { } while (0)
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#define destroy_nfsv4_state(server) do { } while (0)
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#define nfs4_put_state_owner(inode, owner) do { } while (0)
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#define nfs4_put_open_state(state) do { } while (0)
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#define nfs4_close_state(a, b) do { } while (0)
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#endif /* CONFIG_NFS_V4 */
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#endif /* __LINUX_FS_NFS_NFS4_FS.H */
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#include <linux/smp_lock.h>
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#include <linux/smp_lock.h>
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#include <linux/namei.h>
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#include <linux/namei.h>
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#include "nfs4_fs.h"
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#include "delegation.h"
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#include "delegation.h"
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#define NFSDBG_FACILITY NFSDBG_PROC
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#define NFSDBG_FACILITY NFSDBG_PROC
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@ -62,8 +63,6 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
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extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
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extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
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extern struct rpc_procinfo nfs4_procedures[];
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extern struct rpc_procinfo nfs4_procedures[];
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|
|
||||||
extern nfs4_stateid zero_stateid;
|
|
||||||
|
|
||||||
/* Prevent leaks of NFSv4 errors into userland */
|
/* Prevent leaks of NFSv4 errors into userland */
|
||||||
int nfs4_map_errors(int err)
|
int nfs4_map_errors(int err)
|
||||||
{
|
{
|
||||||
|
|
@ -104,7 +103,7 @@ const u32 nfs4_statfs_bitmap[2] = {
|
||||||
| FATTR4_WORD1_SPACE_TOTAL
|
| FATTR4_WORD1_SPACE_TOTAL
|
||||||
};
|
};
|
||||||
|
|
||||||
u32 nfs4_pathconf_bitmap[2] = {
|
const u32 nfs4_pathconf_bitmap[2] = {
|
||||||
FATTR4_WORD0_MAXLINK
|
FATTR4_WORD0_MAXLINK
|
||||||
| FATTR4_WORD0_MAXNAME,
|
| FATTR4_WORD0_MAXNAME,
|
||||||
0
|
0
|
||||||
|
|
|
||||||
|
|
@ -53,6 +53,7 @@
|
||||||
#include <linux/nfs.h>
|
#include <linux/nfs.h>
|
||||||
#include <linux/nfs4.h>
|
#include <linux/nfs4.h>
|
||||||
#include <linux/nfs_fs.h>
|
#include <linux/nfs_fs.h>
|
||||||
|
#include "nfs4_fs.h"
|
||||||
|
|
||||||
#define NFSDBG_FACILITY NFSDBG_PROC
|
#define NFSDBG_FACILITY NFSDBG_PROC
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -46,24 +46,18 @@
|
||||||
#include <linux/workqueue.h>
|
#include <linux/workqueue.h>
|
||||||
#include <linux/bitops.h>
|
#include <linux/bitops.h>
|
||||||
|
|
||||||
|
#include "nfs4_fs.h"
|
||||||
#include "callback.h"
|
#include "callback.h"
|
||||||
#include "delegation.h"
|
#include "delegation.h"
|
||||||
|
|
||||||
#define OPENOWNER_POOL_SIZE 8
|
#define OPENOWNER_POOL_SIZE 8
|
||||||
|
|
||||||
|
const nfs4_stateid zero_stateid;
|
||||||
|
|
||||||
static DEFINE_SPINLOCK(state_spinlock);
|
static DEFINE_SPINLOCK(state_spinlock);
|
||||||
|
|
||||||
nfs4_stateid zero_stateid;
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
nfs4_stateid one_stateid =
|
|
||||||
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
|
|
||||||
#endif
|
|
||||||
|
|
||||||
static LIST_HEAD(nfs4_clientid_list);
|
static LIST_HEAD(nfs4_clientid_list);
|
||||||
|
|
||||||
static void nfs4_recover_state(void *);
|
static void nfs4_recover_state(void *);
|
||||||
extern void nfs4_renew_state(void *);
|
|
||||||
|
|
||||||
void
|
void
|
||||||
init_nfsv4_state(struct nfs_server *server)
|
init_nfsv4_state(struct nfs_server *server)
|
||||||
|
|
|
||||||
|
|
@ -51,6 +51,7 @@
|
||||||
#include <linux/nfs4.h>
|
#include <linux/nfs4.h>
|
||||||
#include <linux/nfs_fs.h>
|
#include <linux/nfs_fs.h>
|
||||||
#include <linux/nfs_idmap.h>
|
#include <linux/nfs_idmap.h>
|
||||||
|
#include "nfs4_fs.h"
|
||||||
|
|
||||||
#define NFSDBG_FACILITY NFSDBG_XDR
|
#define NFSDBG_FACILITY NFSDBG_XDR
|
||||||
|
|
||||||
|
|
@ -660,8 +661,6 @@ static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1
|
||||||
|
|
||||||
static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
|
static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
|
||||||
{
|
{
|
||||||
extern u32 nfs4_fattr_bitmap[];
|
|
||||||
|
|
||||||
return encode_getattr_two(xdr,
|
return encode_getattr_two(xdr,
|
||||||
bitmask[0] & nfs4_fattr_bitmap[0],
|
bitmask[0] & nfs4_fattr_bitmap[0],
|
||||||
bitmask[1] & nfs4_fattr_bitmap[1]);
|
bitmask[1] & nfs4_fattr_bitmap[1]);
|
||||||
|
|
@ -669,8 +668,6 @@ static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
|
||||||
|
|
||||||
static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
|
static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
|
||||||
{
|
{
|
||||||
extern u32 nfs4_fsinfo_bitmap[];
|
|
||||||
|
|
||||||
return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
|
return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
|
||||||
bitmask[1] & nfs4_fsinfo_bitmap[1]);
|
bitmask[1] & nfs4_fsinfo_bitmap[1]);
|
||||||
}
|
}
|
||||||
|
|
@ -969,7 +966,6 @@ static int encode_putrootfh(struct xdr_stream *xdr)
|
||||||
|
|
||||||
static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
|
static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
|
||||||
{
|
{
|
||||||
extern nfs4_stateid zero_stateid;
|
|
||||||
nfs4_stateid stateid;
|
nfs4_stateid stateid;
|
||||||
uint32_t *p;
|
uint32_t *p;
|
||||||
|
|
||||||
|
|
@ -1697,7 +1693,6 @@ static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs
|
||||||
*/
|
*/
|
||||||
static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
|
static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
|
||||||
{
|
{
|
||||||
extern u32 nfs4_pathconf_bitmap[2];
|
|
||||||
struct xdr_stream xdr;
|
struct xdr_stream xdr;
|
||||||
struct compound_hdr hdr = {
|
struct compound_hdr hdr = {
|
||||||
.nops = 2,
|
.nops = 2,
|
||||||
|
|
@ -1718,7 +1713,6 @@ static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct
|
||||||
*/
|
*/
|
||||||
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
|
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
|
||||||
{
|
{
|
||||||
extern u32 nfs4_statfs_bitmap[];
|
|
||||||
struct xdr_stream xdr;
|
struct xdr_stream xdr;
|
||||||
struct compound_hdr hdr = {
|
struct compound_hdr hdr = {
|
||||||
.nops = 2,
|
.nops = 2,
|
||||||
|
|
|
||||||
|
|
@ -15,7 +15,6 @@
|
||||||
#include <linux/pagemap.h>
|
#include <linux/pagemap.h>
|
||||||
#include <linux/rwsem.h>
|
#include <linux/rwsem.h>
|
||||||
#include <linux/wait.h>
|
#include <linux/wait.h>
|
||||||
#include <linux/uio.h>
|
|
||||||
|
|
||||||
#include <linux/nfs_fs_sb.h>
|
#include <linux/nfs_fs_sb.h>
|
||||||
|
|
||||||
|
|
@ -29,7 +28,6 @@
|
||||||
#include <linux/nfs4.h>
|
#include <linux/nfs4.h>
|
||||||
#include <linux/nfs_xdr.h>
|
#include <linux/nfs_xdr.h>
|
||||||
#include <linux/rwsem.h>
|
#include <linux/rwsem.h>
|
||||||
#include <linux/workqueue.h>
|
|
||||||
#include <linux/mempool.h>
|
#include <linux/mempool.h>
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
|
@ -43,13 +41,6 @@
|
||||||
#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768
|
#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768
|
||||||
#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096
|
#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096
|
||||||
|
|
||||||
/*
|
|
||||||
* The upper limit on timeouts for the exponential backoff algorithm.
|
|
||||||
*/
|
|
||||||
#define NFS_WRITEBACK_DELAY (5*HZ)
|
|
||||||
#define NFS_WRITEBACK_LOCKDELAY (60*HZ)
|
|
||||||
#define NFS_COMMIT_DELAY (5*HZ)
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* superblock magic number for NFS
|
* superblock magic number for NFS
|
||||||
*/
|
*/
|
||||||
|
|
@ -60,9 +51,6 @@
|
||||||
*/
|
*/
|
||||||
#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
|
#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
|
||||||
|
|
||||||
#define NFS_RW_SYNC 0x0001 /* O_SYNC handling */
|
|
||||||
#define NFS_RW_SWAP 0x0002 /* This is a swap request */
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* When flushing a cluster of dirty pages, there can be different
|
* When flushing a cluster of dirty pages, there can be different
|
||||||
* strategies:
|
* strategies:
|
||||||
|
|
@ -434,11 +422,6 @@ static inline void nfs_writedata_free(struct nfs_write_data *p)
|
||||||
mempool_free(p, nfs_wdata_mempool);
|
mempool_free(p, nfs_wdata_mempool);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Hack for future NFS swap support */
|
|
||||||
#ifndef IS_SWAPFILE
|
|
||||||
# define IS_SWAPFILE(inode) (0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* linux/fs/nfs/read.c
|
* linux/fs/nfs/read.c
|
||||||
*/
|
*/
|
||||||
|
|
@ -515,230 +498,6 @@ extern void * nfs_root_data(void);
|
||||||
|
|
||||||
#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
|
#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
|
||||||
|
|
||||||
#ifdef CONFIG_NFS_V4
|
|
||||||
|
|
||||||
struct idmap;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* In a seqid-mutating op, this macro controls which error return
|
|
||||||
* values trigger incrementation of the seqid.
|
|
||||||
*
|
|
||||||
* from rfc 3010:
|
|
||||||
* The client MUST monotonically increment the sequence number for the
|
|
||||||
* CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
|
|
||||||
* operations. This is true even in the event that the previous
|
|
||||||
* operation that used the sequence number received an error. The only
|
|
||||||
* exception to this rule is if the previous operation received one of
|
|
||||||
* the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
|
|
||||||
* NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
|
|
||||||
* NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
#define seqid_mutating_err(err) \
|
|
||||||
(((err) != NFSERR_STALE_CLIENTID) && \
|
|
||||||
((err) != NFSERR_STALE_STATEID) && \
|
|
||||||
((err) != NFSERR_BAD_STATEID) && \
|
|
||||||
((err) != NFSERR_BAD_SEQID) && \
|
|
||||||
((err) != NFSERR_BAD_XDR) && \
|
|
||||||
((err) != NFSERR_RESOURCE) && \
|
|
||||||
((err) != NFSERR_NOFILEHANDLE))
|
|
||||||
|
|
||||||
enum nfs4_client_state {
|
|
||||||
NFS4CLNT_OK = 0,
|
|
||||||
};
|
|
||||||
|
|
||||||
/*
|
|
||||||
* The nfs4_client identifies our client state to the server.
|
|
||||||
*/
|
|
||||||
struct nfs4_client {
|
|
||||||
struct list_head cl_servers; /* Global list of servers */
|
|
||||||
struct in_addr cl_addr; /* Server identifier */
|
|
||||||
u64 cl_clientid; /* constant */
|
|
||||||
nfs4_verifier cl_confirm;
|
|
||||||
unsigned long cl_state;
|
|
||||||
|
|
||||||
u32 cl_lockowner_id;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* The following rwsem ensures exclusive access to the server
|
|
||||||
* while we recover the state following a lease expiration.
|
|
||||||
*/
|
|
||||||
struct rw_semaphore cl_sem;
|
|
||||||
|
|
||||||
struct list_head cl_delegations;
|
|
||||||
struct list_head cl_state_owners;
|
|
||||||
struct list_head cl_unused;
|
|
||||||
int cl_nunused;
|
|
||||||
spinlock_t cl_lock;
|
|
||||||
atomic_t cl_count;
|
|
||||||
|
|
||||||
struct rpc_clnt * cl_rpcclient;
|
|
||||||
struct rpc_cred * cl_cred;
|
|
||||||
|
|
||||||
struct list_head cl_superblocks; /* List of nfs_server structs */
|
|
||||||
|
|
||||||
unsigned long cl_lease_time;
|
|
||||||
unsigned long cl_last_renewal;
|
|
||||||
struct work_struct cl_renewd;
|
|
||||||
struct work_struct cl_recoverd;
|
|
||||||
|
|
||||||
wait_queue_head_t cl_waitq;
|
|
||||||
struct rpc_wait_queue cl_rpcwaitq;
|
|
||||||
|
|
||||||
/* used for the setclientid verifier */
|
|
||||||
struct timespec cl_boot_time;
|
|
||||||
|
|
||||||
/* idmapper */
|
|
||||||
struct idmap * cl_idmap;
|
|
||||||
|
|
||||||
/* Our own IP address, as a null-terminated string.
|
|
||||||
* This is used to generate the clientid, and the callback address.
|
|
||||||
*/
|
|
||||||
char cl_ipaddr[16];
|
|
||||||
unsigned char cl_id_uniquifier;
|
|
||||||
};
|
|
||||||
|
|
||||||
/*
|
|
||||||
* NFS4 state_owners and lock_owners are simply labels for ordered
|
|
||||||
* sequences of RPC calls. Their sole purpose is to provide once-only
|
|
||||||
* semantics by allowing the server to identify replayed requests.
|
|
||||||
*
|
|
||||||
* The ->so_sema is held during all state_owner seqid-mutating operations:
|
|
||||||
* OPEN, OPEN_DOWNGRADE, and CLOSE. Its purpose is to properly serialize
|
|
||||||
* so_seqid.
|
|
||||||
*/
|
|
||||||
struct nfs4_state_owner {
|
|
||||||
struct list_head so_list; /* per-clientid list of state_owners */
|
|
||||||
struct nfs4_client *so_client;
|
|
||||||
u32 so_id; /* 32-bit identifier, unique */
|
|
||||||
struct semaphore so_sema;
|
|
||||||
u32 so_seqid; /* protected by so_sema */
|
|
||||||
atomic_t so_count;
|
|
||||||
|
|
||||||
struct rpc_cred *so_cred; /* Associated cred */
|
|
||||||
struct list_head so_states;
|
|
||||||
struct list_head so_delegations;
|
|
||||||
};
|
|
||||||
|
|
||||||
/*
|
|
||||||
* struct nfs4_state maintains the client-side state for a given
|
|
||||||
* (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
|
|
||||||
*
|
|
||||||
* OPEN:
|
|
||||||
* In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
|
|
||||||
* we need to know how many files are open for reading or writing on a
|
|
||||||
* given inode. This information too is stored here.
|
|
||||||
*
|
|
||||||
* LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
|
|
||||||
*/
|
|
||||||
|
|
||||||
struct nfs4_lock_state {
|
|
||||||
struct list_head ls_locks; /* Other lock stateids */
|
|
||||||
fl_owner_t ls_owner; /* POSIX lock owner */
|
|
||||||
#define NFS_LOCK_INITIALIZED 1
|
|
||||||
int ls_flags;
|
|
||||||
u32 ls_seqid;
|
|
||||||
u32 ls_id;
|
|
||||||
nfs4_stateid ls_stateid;
|
|
||||||
atomic_t ls_count;
|
|
||||||
};
|
|
||||||
|
|
||||||
/* bits for nfs4_state->flags */
|
|
||||||
enum {
|
|
||||||
LK_STATE_IN_USE,
|
|
||||||
NFS_DELEGATED_STATE,
|
|
||||||
};
|
|
||||||
|
|
||||||
struct nfs4_state {
|
|
||||||
struct list_head open_states; /* List of states for the same state_owner */
|
|
||||||
struct list_head inode_states; /* List of states for the same inode */
|
|
||||||
struct list_head lock_states; /* List of subservient lock stateids */
|
|
||||||
|
|
||||||
struct nfs4_state_owner *owner; /* Pointer to the open owner */
|
|
||||||
struct inode *inode; /* Pointer to the inode */
|
|
||||||
|
|
||||||
unsigned long flags; /* Do we hold any locks? */
|
|
||||||
struct semaphore lock_sema; /* Serializes file locking operations */
|
|
||||||
rwlock_t state_lock; /* Protects the lock_states list */
|
|
||||||
|
|
||||||
nfs4_stateid stateid;
|
|
||||||
|
|
||||||
unsigned int nreaders;
|
|
||||||
unsigned int nwriters;
|
|
||||||
int state; /* State on the server (R,W, or RW) */
|
|
||||||
atomic_t count;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
struct nfs4_exception {
|
|
||||||
long timeout;
|
|
||||||
int retry;
|
|
||||||
};
|
|
||||||
|
|
||||||
struct nfs4_state_recovery_ops {
|
|
||||||
int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
|
|
||||||
int (*recover_lock)(struct nfs4_state *, struct file_lock *);
|
|
||||||
};
|
|
||||||
|
|
||||||
extern struct dentry_operations nfs4_dentry_operations;
|
|
||||||
extern struct inode_operations nfs4_dir_inode_operations;
|
|
||||||
|
|
||||||
/* nfs4proc.c */
|
|
||||||
extern int nfs4_map_errors(int err);
|
|
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extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short);
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extern int nfs4_proc_setclientid_confirm(struct nfs4_client *);
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extern int nfs4_proc_async_renew(struct nfs4_client *);
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extern int nfs4_proc_renew(struct nfs4_client *);
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extern int nfs4_do_close(struct inode *inode, struct nfs4_state *state, mode_t mode);
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extern struct inode *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
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extern int nfs4_open_revalidate(struct inode *, struct dentry *, int);
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extern struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops;
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extern struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops;
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/* nfs4renewd.c */
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extern void nfs4_schedule_state_renewal(struct nfs4_client *);
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||||||
extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
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extern void nfs4_kill_renewd(struct nfs4_client *);
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|
||||||
/* nfs4state.c */
|
|
||||||
extern void init_nfsv4_state(struct nfs_server *);
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||||||
extern void destroy_nfsv4_state(struct nfs_server *);
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|
||||||
extern struct nfs4_client *nfs4_get_client(struct in_addr *);
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|
||||||
extern void nfs4_put_client(struct nfs4_client *clp);
|
|
||||||
extern int nfs4_init_client(struct nfs4_client *clp);
|
|
||||||
extern struct nfs4_client *nfs4_find_client(struct in_addr *);
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|
||||||
extern u32 nfs4_alloc_lockowner_id(struct nfs4_client *);
|
|
||||||
|
|
||||||
extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
|
|
||||||
extern void nfs4_put_state_owner(struct nfs4_state_owner *);
|
|
||||||
extern void nfs4_drop_state_owner(struct nfs4_state_owner *);
|
|
||||||
extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
|
|
||||||
extern void nfs4_put_open_state(struct nfs4_state *);
|
|
||||||
extern void nfs4_close_state(struct nfs4_state *, mode_t);
|
|
||||||
extern struct nfs4_state *nfs4_find_state(struct inode *, struct rpc_cred *, mode_t mode);
|
|
||||||
extern void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp);
|
|
||||||
extern void nfs4_schedule_state_recovery(struct nfs4_client *);
|
|
||||||
extern struct nfs4_lock_state *nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t);
|
|
||||||
extern struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t);
|
|
||||||
extern void nfs4_put_lock_state(struct nfs4_lock_state *state);
|
|
||||||
extern void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *ls);
|
|
||||||
extern void nfs4_notify_setlk(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
|
|
||||||
extern void nfs4_notify_unlck(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
|
|
||||||
extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
struct nfs4_mount_data;
|
|
||||||
#else
|
|
||||||
#define init_nfsv4_state(server) do { } while (0)
|
|
||||||
#define destroy_nfsv4_state(server) do { } while (0)
|
|
||||||
#define nfs4_put_state_owner(inode, owner) do { } while (0)
|
|
||||||
#define nfs4_put_open_state(state) do { } while (0)
|
|
||||||
#define nfs4_close_state(a, b) do { } while (0)
|
|
||||||
#define nfs4_renewd_prepare_shutdown(server) do { } while (0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif /* __KERNEL__ */
|
#endif /* __KERNEL__ */
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue