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695 lines
23 KiB
695 lines
23 KiB
/* |
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* Copyright (c) 2001 The Regents of the University of Michigan. |
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* All rights reserved. |
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* |
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* Kendrick Smith <[email protected]> |
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* Andy Adamson <[email protected]> |
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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 _NFSD4_STATE_H |
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#define _NFSD4_STATE_H |
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|
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#include <linux/idr.h> |
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#include <linux/refcount.h> |
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#include <linux/sunrpc/svc_xprt.h> |
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#include "nfsfh.h" |
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#include "nfsd.h" |
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|
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typedef struct { |
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u32 cl_boot; |
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u32 cl_id; |
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} clientid_t; |
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typedef struct { |
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clientid_t so_clid; |
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u32 so_id; |
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} stateid_opaque_t; |
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typedef struct { |
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u32 si_generation; |
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stateid_opaque_t si_opaque; |
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} stateid_t; |
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typedef struct { |
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stateid_t stid; |
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#define NFS4_COPY_STID 1 |
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#define NFS4_COPYNOTIFY_STID 2 |
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unsigned char sc_type; |
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refcount_t sc_count; |
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} copy_stateid_t; |
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struct nfsd4_callback { |
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struct nfs4_client *cb_clp; |
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struct rpc_message cb_msg; |
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const struct nfsd4_callback_ops *cb_ops; |
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struct work_struct cb_work; |
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int cb_seq_status; |
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int cb_status; |
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bool cb_need_restart; |
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bool cb_holds_slot; |
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}; |
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struct nfsd4_callback_ops { |
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void (*prepare)(struct nfsd4_callback *); |
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int (*done)(struct nfsd4_callback *, struct rpc_task *); |
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void (*release)(struct nfsd4_callback *); |
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}; |
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/* |
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* A core object that represents a "common" stateid. These are generally |
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* embedded within the different (more specific) stateid objects and contain |
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* fields that are of general use to any stateid. |
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*/ |
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struct nfs4_stid { |
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refcount_t sc_count; |
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#define NFS4_OPEN_STID 1 |
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#define NFS4_LOCK_STID 2 |
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#define NFS4_DELEG_STID 4 |
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/* For an open stateid kept around *only* to process close replays: */ |
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#define NFS4_CLOSED_STID 8 |
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/* For a deleg stateid kept around only to process free_stateid's: */ |
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#define NFS4_REVOKED_DELEG_STID 16 |
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#define NFS4_CLOSED_DELEG_STID 32 |
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#define NFS4_LAYOUT_STID 64 |
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struct list_head sc_cp_list; |
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unsigned char sc_type; |
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stateid_t sc_stateid; |
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spinlock_t sc_lock; |
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struct nfs4_client *sc_client; |
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struct nfs4_file *sc_file; |
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void (*sc_free)(struct nfs4_stid *); |
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}; |
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|
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/* Keep a list of stateids issued by the COPY_NOTIFY, associate it with the |
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* parent OPEN/LOCK/DELEG stateid. |
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*/ |
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struct nfs4_cpntf_state { |
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copy_stateid_t cp_stateid; |
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struct list_head cp_list; /* per parent nfs4_stid */ |
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stateid_t cp_p_stateid; /* copy of parent's stateid */ |
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clientid_t cp_p_clid; /* copy of parent's clid */ |
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time64_t cpntf_time; /* last time stateid used */ |
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}; |
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/* |
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* Represents a delegation stateid. The nfs4_client holds references to these |
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* and they are put when it is being destroyed or when the delegation is |
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* returned by the client: |
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* |
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* o 1 reference as long as a delegation is still in force (taken when it's |
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* alloc'd, put when it's returned or revoked) |
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* |
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* o 1 reference as long as a recall rpc is in progress (taken when the lease |
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* is broken, put when the rpc exits) |
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* |
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* o 1 more ephemeral reference for each nfsd thread currently doing something |
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* with that delegation without holding the cl_lock |
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* |
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* If the server attempts to recall a delegation and the client doesn't do so |
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* before a timeout, the server may also revoke the delegation. In that case, |
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* the object will either be destroyed (v4.0) or moved to a per-client list of |
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* revoked delegations (v4.1+). |
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* |
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* This object is a superset of the nfs4_stid. |
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*/ |
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struct nfs4_delegation { |
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struct nfs4_stid dl_stid; /* must be first field */ |
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struct list_head dl_perfile; |
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struct list_head dl_perclnt; |
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struct list_head dl_recall_lru; /* delegation recalled */ |
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struct nfs4_clnt_odstate *dl_clnt_odstate; |
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u32 dl_type; |
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time64_t dl_time; |
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/* For recall: */ |
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int dl_retries; |
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struct nfsd4_callback dl_recall; |
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}; |
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#define cb_to_delegation(cb) \ |
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container_of(cb, struct nfs4_delegation, dl_recall) |
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|
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/* client delegation callback info */ |
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struct nfs4_cb_conn { |
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/* SETCLIENTID info */ |
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struct sockaddr_storage cb_addr; |
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struct sockaddr_storage cb_saddr; |
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size_t cb_addrlen; |
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u32 cb_prog; /* used only in 4.0 case; |
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per-session otherwise */ |
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u32 cb_ident; /* minorversion 0 only */ |
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struct svc_xprt *cb_xprt; /* minorversion 1 only */ |
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}; |
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static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s) |
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{ |
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return container_of(s, struct nfs4_delegation, dl_stid); |
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} |
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/* Maximum number of slots per session. 160 is useful for long haul TCP */ |
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#define NFSD_MAX_SLOTS_PER_SESSION 160 |
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/* Maximum number of operations per session compound */ |
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#define NFSD_MAX_OPS_PER_COMPOUND 16 |
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/* Maximum session per slot cache size */ |
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#define NFSD_SLOT_CACHE_SIZE 2048 |
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/* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */ |
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#define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32 |
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#define NFSD_MAX_MEM_PER_SESSION \ |
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(NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE) |
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struct nfsd4_slot { |
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u32 sl_seqid; |
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__be32 sl_status; |
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struct svc_cred sl_cred; |
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u32 sl_datalen; |
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u16 sl_opcnt; |
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#define NFSD4_SLOT_INUSE (1 << 0) |
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#define NFSD4_SLOT_CACHETHIS (1 << 1) |
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#define NFSD4_SLOT_INITIALIZED (1 << 2) |
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#define NFSD4_SLOT_CACHED (1 << 3) |
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u8 sl_flags; |
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char sl_data[]; |
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}; |
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struct nfsd4_channel_attrs { |
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u32 headerpadsz; |
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u32 maxreq_sz; |
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u32 maxresp_sz; |
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u32 maxresp_cached; |
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u32 maxops; |
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u32 maxreqs; |
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u32 nr_rdma_attrs; |
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u32 rdma_attrs; |
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}; |
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struct nfsd4_cb_sec { |
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u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */ |
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kuid_t uid; |
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kgid_t gid; |
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}; |
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struct nfsd4_create_session { |
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clientid_t clientid; |
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struct nfs4_sessionid sessionid; |
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u32 seqid; |
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u32 flags; |
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struct nfsd4_channel_attrs fore_channel; |
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struct nfsd4_channel_attrs back_channel; |
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u32 callback_prog; |
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struct nfsd4_cb_sec cb_sec; |
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}; |
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struct nfsd4_backchannel_ctl { |
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u32 bc_cb_program; |
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struct nfsd4_cb_sec bc_cb_sec; |
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}; |
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struct nfsd4_bind_conn_to_session { |
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struct nfs4_sessionid sessionid; |
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u32 dir; |
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}; |
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/* The single slot clientid cache structure */ |
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struct nfsd4_clid_slot { |
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u32 sl_seqid; |
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__be32 sl_status; |
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struct nfsd4_create_session sl_cr_ses; |
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}; |
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struct nfsd4_conn { |
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struct list_head cn_persession; |
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struct svc_xprt *cn_xprt; |
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struct svc_xpt_user cn_xpt_user; |
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struct nfsd4_session *cn_session; |
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/* CDFC4_FORE, CDFC4_BACK: */ |
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unsigned char cn_flags; |
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}; |
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/* |
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* Representation of a v4.1+ session. These are refcounted in a similar fashion |
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* to the nfs4_client. References are only taken when the server is actively |
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* working on the object (primarily during the processing of compounds). |
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*/ |
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struct nfsd4_session { |
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atomic_t se_ref; |
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struct list_head se_hash; /* hash by sessionid */ |
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struct list_head se_perclnt; |
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/* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */ |
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#define NFS4_SESSION_DEAD 0x010 |
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u32 se_flags; |
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struct nfs4_client *se_client; |
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struct nfs4_sessionid se_sessionid; |
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struct nfsd4_channel_attrs se_fchannel; |
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struct nfsd4_channel_attrs se_bchannel; |
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struct nfsd4_cb_sec se_cb_sec; |
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struct list_head se_conns; |
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u32 se_cb_prog; |
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u32 se_cb_seq_nr; |
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struct nfsd4_slot *se_slots[]; /* forward channel slots */ |
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}; |
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/* formatted contents of nfs4_sessionid */ |
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struct nfsd4_sessionid { |
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clientid_t clientid; |
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u32 sequence; |
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u32 reserved; |
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}; |
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#define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */ |
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/* |
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* struct nfs4_client - one per client. Clientids live here. |
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* |
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* The initial object created by an NFS client using SETCLIENTID (for NFSv4.0) |
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* or EXCHANGE_ID (for NFSv4.1+). These objects are refcounted and timestamped. |
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* Each nfsd_net_ns object contains a set of these and they are tracked via |
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* short and long form clientid. They are hashed and searched for under the |
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* per-nfsd_net client_lock spinlock. |
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* |
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* References to it are only held during the processing of compounds, and in |
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* certain other operations. In their "resting state" they have a refcount of |
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* 0. If they are not renewed within a lease period, they become eligible for |
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* destruction by the laundromat. |
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* |
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* These objects can also be destroyed prematurely by the fault injection code, |
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* or if the client sends certain forms of SETCLIENTID or EXCHANGE_ID updates. |
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* Care is taken *not* to do this however when the objects have an elevated |
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* refcount. |
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* |
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* o Each nfs4_client is hashed by clientid |
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* |
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* o Each nfs4_clients is also hashed by name (the opaque quantity initially |
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* sent by the client to identify itself). |
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* |
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* o cl_perclient list is used to ensure no dangling stateowner references |
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* when we expire the nfs4_client |
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*/ |
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struct nfs4_client { |
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struct list_head cl_idhash; /* hash by cl_clientid.id */ |
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struct rb_node cl_namenode; /* link into by-name trees */ |
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struct list_head *cl_ownerstr_hashtbl; |
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struct list_head cl_openowners; |
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struct idr cl_stateids; /* stateid lookup */ |
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struct list_head cl_delegations; |
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struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */ |
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struct list_head cl_lru; /* tail queue */ |
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#ifdef CONFIG_NFSD_PNFS |
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struct list_head cl_lo_states; /* outstanding layout states */ |
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#endif |
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struct xdr_netobj cl_name; /* id generated by client */ |
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nfs4_verifier cl_verifier; /* generated by client */ |
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time64_t cl_time; /* time of last lease renewal */ |
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struct sockaddr_storage cl_addr; /* client ipaddress */ |
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bool cl_mach_cred; /* SP4_MACH_CRED in force */ |
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struct svc_cred cl_cred; /* setclientid principal */ |
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clientid_t cl_clientid; /* generated by server */ |
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nfs4_verifier cl_confirm; /* generated by server */ |
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u32 cl_minorversion; |
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/* NFSv4.1 client implementation id: */ |
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struct xdr_netobj cl_nii_domain; |
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struct xdr_netobj cl_nii_name; |
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struct timespec64 cl_nii_time; |
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/* for v4.0 and v4.1 callbacks: */ |
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struct nfs4_cb_conn cl_cb_conn; |
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#define NFSD4_CLIENT_CB_UPDATE (0) |
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#define NFSD4_CLIENT_CB_KILL (1) |
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#define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ |
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#define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ |
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#define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */ |
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#define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */ |
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#define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ |
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1 << NFSD4_CLIENT_CB_KILL) |
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unsigned long cl_flags; |
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const struct cred *cl_cb_cred; |
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struct rpc_clnt *cl_cb_client; |
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u32 cl_cb_ident; |
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#define NFSD4_CB_UP 0 |
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#define NFSD4_CB_UNKNOWN 1 |
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#define NFSD4_CB_DOWN 2 |
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#define NFSD4_CB_FAULT 3 |
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int cl_cb_state; |
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struct nfsd4_callback cl_cb_null; |
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struct nfsd4_session *cl_cb_session; |
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/* for all client information that callback code might need: */ |
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spinlock_t cl_lock; |
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/* for nfs41 */ |
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struct list_head cl_sessions; |
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struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ |
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u32 cl_exchange_flags; |
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/* number of rpc's in progress over an associated session: */ |
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atomic_t cl_rpc_users; |
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struct nfsdfs_client cl_nfsdfs; |
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struct nfs4_op_map cl_spo_must_allow; |
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/* debugging info directory under nfsd/clients/ : */ |
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struct dentry *cl_nfsd_dentry; |
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/* for nfs41 callbacks */ |
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/* We currently support a single back channel with a single slot */ |
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unsigned long cl_cb_slot_busy; |
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struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ |
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/* wait here for slots */ |
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struct net *net; |
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struct list_head async_copies; /* list of async copies */ |
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spinlock_t async_lock; /* lock for async copies */ |
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atomic_t cl_cb_inflight; /* Outstanding callbacks */ |
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}; |
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/* struct nfs4_client_reset |
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* one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl |
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* upon lease reset, or from upcall to state_daemon (to read in state |
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* from non-volitile storage) upon reboot. |
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*/ |
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struct nfs4_client_reclaim { |
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struct list_head cr_strhash; /* hash by cr_name */ |
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struct nfs4_client *cr_clp; /* pointer to associated clp */ |
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struct xdr_netobj cr_name; /* recovery dir name */ |
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struct xdr_netobj cr_princhash; |
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}; |
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/* A reasonable value for REPLAY_ISIZE was estimated as follows: |
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* The OPEN response, typically the largest, requires |
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* 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) + |
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* 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) + |
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* 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes |
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*/ |
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#define NFSD4_REPLAY_ISIZE 112 |
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/* |
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* Replay buffer, where the result of the last seqid-mutating operation |
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* is cached. |
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*/ |
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struct nfs4_replay { |
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__be32 rp_status; |
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unsigned int rp_buflen; |
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char *rp_buf; |
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struct knfsd_fh rp_openfh; |
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struct mutex rp_mutex; |
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char rp_ibuf[NFSD4_REPLAY_ISIZE]; |
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}; |
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struct nfs4_stateowner; |
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struct nfs4_stateowner_operations { |
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void (*so_unhash)(struct nfs4_stateowner *); |
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void (*so_free)(struct nfs4_stateowner *); |
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}; |
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/* |
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* A core object that represents either an open or lock owner. The object and |
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* lock owner objects have one of these embedded within them. Refcounts and |
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* other fields common to both owner types are contained within these |
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* structures. |
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*/ |
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struct nfs4_stateowner { |
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struct list_head so_strhash; |
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struct list_head so_stateids; |
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struct nfs4_client *so_client; |
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const struct nfs4_stateowner_operations *so_ops; |
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/* after increment in nfsd4_bump_seqid, represents the next |
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* sequence id expected from the client: */ |
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atomic_t so_count; |
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u32 so_seqid; |
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struct xdr_netobj so_owner; /* open owner name */ |
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struct nfs4_replay so_replay; |
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bool so_is_open_owner; |
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}; |
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/* |
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* When a file is opened, the client provides an open state owner opaque string |
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* that indicates the "owner" of that open. These objects are refcounted. |
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* References to it are held by each open state associated with it. This object |
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* is a superset of the nfs4_stateowner struct. |
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*/ |
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struct nfs4_openowner { |
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struct nfs4_stateowner oo_owner; /* must be first field */ |
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struct list_head oo_perclient; |
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/* |
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* We keep around openowners a little while after last close, |
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* which saves clients from having to confirm, and allows us to |
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* handle close replays if they come soon enough. The close_lru |
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* is a list of such openowners, to be reaped by the laundromat |
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* thread eventually if they remain unused: |
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*/ |
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struct list_head oo_close_lru; |
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struct nfs4_ol_stateid *oo_last_closed_stid; |
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time64_t oo_time; /* time of placement on so_close_lru */ |
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#define NFS4_OO_CONFIRMED 1 |
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unsigned char oo_flags; |
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}; |
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/* |
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* Represents a generic "lockowner". Similar to an openowner. References to it |
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* are held by the lock stateids that are created on its behalf. This object is |
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* a superset of the nfs4_stateowner struct. |
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*/ |
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struct nfs4_lockowner { |
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struct nfs4_stateowner lo_owner; /* must be first element */ |
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struct list_head lo_blocked; /* blocked file_locks */ |
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}; |
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static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so) |
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{ |
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return container_of(so, struct nfs4_openowner, oo_owner); |
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} |
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|
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static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so) |
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{ |
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return container_of(so, struct nfs4_lockowner, lo_owner); |
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} |
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|
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/* |
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* Per-client state indicating no. of opens and outstanding delegations |
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* on a file from a particular client.'od' stands for 'open & delegation' |
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*/ |
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struct nfs4_clnt_odstate { |
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struct nfs4_client *co_client; |
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struct nfs4_file *co_file; |
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struct list_head co_perfile; |
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refcount_t co_odcount; |
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}; |
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|
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/* |
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* nfs4_file: a file opened by some number of (open) nfs4_stateowners. |
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* |
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* These objects are global. nfsd keeps one instance of a nfs4_file per |
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* filehandle (though it may keep multiple file descriptors for each). Each |
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* inode can have multiple filehandles associated with it, so there is |
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* (potentially) a many to one relationship between this struct and struct |
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* inode. |
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* |
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* These are hashed by filehandle in the file_hashtbl, which is protected by |
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* the global state_lock spinlock. |
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*/ |
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struct nfs4_file { |
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refcount_t fi_ref; |
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spinlock_t fi_lock; |
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struct hlist_node fi_hash; /* hash on fi_fhandle */ |
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struct list_head fi_stateids; |
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union { |
|
struct list_head fi_delegations; |
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struct rcu_head fi_rcu; |
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}; |
|
struct list_head fi_clnt_odstate; |
|
/* One each for O_RDONLY, O_WRONLY, O_RDWR: */ |
|
struct nfsd_file *fi_fds[3]; |
|
/* |
|
* Each open or lock stateid contributes 0-4 to the counts |
|
* below depending on which bits are set in st_access_bitmap: |
|
* 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set |
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* + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set |
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* + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set. |
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*/ |
|
atomic_t fi_access[2]; |
|
u32 fi_share_deny; |
|
struct nfsd_file *fi_deleg_file; |
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int fi_delegees; |
|
struct knfsd_fh fi_fhandle; |
|
bool fi_had_conflict; |
|
#ifdef CONFIG_NFSD_PNFS |
|
struct list_head fi_lo_states; |
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atomic_t fi_lo_recalls; |
|
#endif |
|
}; |
|
|
|
/* |
|
* A generic struct representing either a open or lock stateid. The nfs4_client |
|
* holds a reference to each of these objects, and they in turn hold a |
|
* reference to their respective stateowners. The client's reference is |
|
* released in response to a close or unlock (depending on whether it's an open |
|
* or lock stateid) or when the client is being destroyed. |
|
* |
|
* In the case of v4.0 open stateids, these objects are preserved for a little |
|
* while after close in order to handle CLOSE replays. Those are eventually |
|
* reclaimed via a LRU scheme by the laundromat. |
|
* |
|
* This object is a superset of the nfs4_stid. "ol" stands for "Open or Lock". |
|
* Better suggestions welcome. |
|
*/ |
|
struct nfs4_ol_stateid { |
|
struct nfs4_stid st_stid; |
|
struct list_head st_perfile; |
|
struct list_head st_perstateowner; |
|
struct list_head st_locks; |
|
struct nfs4_stateowner *st_stateowner; |
|
struct nfs4_clnt_odstate *st_clnt_odstate; |
|
unsigned char st_access_bmap; |
|
unsigned char st_deny_bmap; |
|
struct nfs4_ol_stateid *st_openstp; |
|
struct mutex st_mutex; |
|
}; |
|
|
|
static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) |
|
{ |
|
return container_of(s, struct nfs4_ol_stateid, st_stid); |
|
} |
|
|
|
struct nfs4_layout_stateid { |
|
struct nfs4_stid ls_stid; |
|
struct list_head ls_perclnt; |
|
struct list_head ls_perfile; |
|
spinlock_t ls_lock; |
|
struct list_head ls_layouts; |
|
u32 ls_layout_type; |
|
struct nfsd_file *ls_file; |
|
struct nfsd4_callback ls_recall; |
|
stateid_t ls_recall_sid; |
|
bool ls_recalled; |
|
struct mutex ls_mutex; |
|
}; |
|
|
|
static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s) |
|
{ |
|
return container_of(s, struct nfs4_layout_stateid, ls_stid); |
|
} |
|
|
|
/* flags for preprocess_seqid_op() */ |
|
#define RD_STATE 0x00000010 |
|
#define WR_STATE 0x00000020 |
|
|
|
enum nfsd4_cb_op { |
|
NFSPROC4_CLNT_CB_NULL = 0, |
|
NFSPROC4_CLNT_CB_RECALL, |
|
NFSPROC4_CLNT_CB_LAYOUT, |
|
NFSPROC4_CLNT_CB_OFFLOAD, |
|
NFSPROC4_CLNT_CB_SEQUENCE, |
|
NFSPROC4_CLNT_CB_NOTIFY_LOCK, |
|
}; |
|
|
|
/* Returns true iff a is later than b: */ |
|
static inline bool nfsd4_stateid_generation_after(stateid_t *a, stateid_t *b) |
|
{ |
|
return (s32)(a->si_generation - b->si_generation) > 0; |
|
} |
|
|
|
/* |
|
* When a client tries to get a lock on a file, we set one of these objects |
|
* on the blocking lock. When the lock becomes free, we can then issue a |
|
* CB_NOTIFY_LOCK to the server. |
|
*/ |
|
struct nfsd4_blocked_lock { |
|
struct list_head nbl_list; |
|
struct list_head nbl_lru; |
|
time64_t nbl_time; |
|
struct file_lock nbl_lock; |
|
struct knfsd_fh nbl_fh; |
|
struct nfsd4_callback nbl_cb; |
|
}; |
|
|
|
struct nfsd4_compound_state; |
|
struct nfsd_net; |
|
struct nfsd4_copy; |
|
|
|
extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp, |
|
struct nfsd4_compound_state *cstate, struct svc_fh *fhp, |
|
stateid_t *stateid, int flags, struct nfsd_file **filp, |
|
struct nfs4_stid **cstid); |
|
__be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, |
|
stateid_t *stateid, unsigned char typemask, |
|
struct nfs4_stid **s, struct nfsd_net *nn); |
|
struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab, |
|
void (*sc_free)(struct nfs4_stid *)); |
|
int nfs4_init_copy_state(struct nfsd_net *nn, struct nfsd4_copy *copy); |
|
void nfs4_free_copy_state(struct nfsd4_copy *copy); |
|
struct nfs4_cpntf_state *nfs4_alloc_init_cpntf_state(struct nfsd_net *nn, |
|
struct nfs4_stid *p_stid); |
|
void nfs4_unhash_stid(struct nfs4_stid *s); |
|
void nfs4_put_stid(struct nfs4_stid *s); |
|
void nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid); |
|
void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *); |
|
extern void nfs4_release_reclaim(struct nfsd_net *); |
|
extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(struct xdr_netobj name, |
|
struct nfsd_net *nn); |
|
extern __be32 nfs4_check_open_reclaim(struct nfs4_client *); |
|
extern void nfsd4_probe_callback(struct nfs4_client *clp); |
|
extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); |
|
extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); |
|
extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, |
|
const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op); |
|
extern void nfsd4_run_cb(struct nfsd4_callback *cb); |
|
extern int nfsd4_create_callback_queue(void); |
|
extern void nfsd4_destroy_callback_queue(void); |
|
extern void nfsd4_shutdown_callback(struct nfs4_client *); |
|
extern void nfsd4_shutdown_copy(struct nfs4_client *clp); |
|
extern void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp); |
|
extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(struct xdr_netobj name, |
|
struct xdr_netobj princhash, struct nfsd_net *nn); |
|
extern bool nfs4_has_reclaimed_state(struct xdr_netobj name, struct nfsd_net *nn); |
|
|
|
struct nfs4_file *find_file(struct knfsd_fh *fh); |
|
void put_nfs4_file(struct nfs4_file *fi); |
|
extern void nfs4_put_copy(struct nfsd4_copy *copy); |
|
extern struct nfsd4_copy * |
|
find_async_copy(struct nfs4_client *clp, stateid_t *staetid); |
|
extern void nfs4_put_cpntf_state(struct nfsd_net *nn, |
|
struct nfs4_cpntf_state *cps); |
|
extern __be32 manage_cpntf_state(struct nfsd_net *nn, stateid_t *st, |
|
struct nfs4_client *clp, |
|
struct nfs4_cpntf_state **cps); |
|
static inline void get_nfs4_file(struct nfs4_file *fi) |
|
{ |
|
refcount_inc(&fi->fi_ref); |
|
} |
|
struct nfsd_file *find_any_file(struct nfs4_file *f); |
|
|
|
/* grace period management */ |
|
void nfsd4_end_grace(struct nfsd_net *nn); |
|
|
|
/* nfs4recover operations */ |
|
extern int nfsd4_client_tracking_init(struct net *net); |
|
extern void nfsd4_client_tracking_exit(struct net *net); |
|
extern void nfsd4_client_record_create(struct nfs4_client *clp); |
|
extern void nfsd4_client_record_remove(struct nfs4_client *clp); |
|
extern int nfsd4_client_record_check(struct nfs4_client *clp); |
|
extern void nfsd4_record_grace_done(struct nfsd_net *nn); |
|
|
|
#endif /* NFSD4_STATE_H */
|
|
|