Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h
new file mode 100644
index 0000000..b6b2fe1
--- /dev/null
+++ b/include/linux/nfsd/state.h
@@ -0,0 +1,298 @@
+/*
+ * linux/include/nfsd/state.h
+ *
+ * Copyright (c) 2001 The Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Kendrick Smith <kmsmith@umich.edu>
+ * Andy Adamson <andros@umich.edu>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _NFSD4_STATE_H
+#define _NFSD4_STATE_H
+
+#include <linux/list.h>
+#include <linux/kref.h>
+#include <linux/sunrpc/clnt.h>
+
+#define NFS4_OPAQUE_LIMIT 1024
+typedef struct {
+ u32 cl_boot;
+ u32 cl_id;
+} clientid_t;
+
+typedef struct {
+ u32 so_boot;
+ u32 so_stateownerid;
+ u32 so_fileid;
+} stateid_opaque_t;
+
+typedef struct {
+ u32 si_generation;
+ stateid_opaque_t si_opaque;
+} stateid_t;
+#define si_boot si_opaque.so_boot
+#define si_stateownerid si_opaque.so_stateownerid
+#define si_fileid si_opaque.so_fileid
+
+extern stateid_t zerostateid;
+extern stateid_t onestateid;
+
+#define ZERO_STATEID(stateid) (!memcmp((stateid), &zerostateid, sizeof(stateid_t)))
+#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
+
+struct nfs4_cb_recall {
+ u32 cbr_ident;
+ int cbr_trunc;
+ stateid_t cbr_stateid;
+ u32 cbr_fhlen;
+ u32 cbr_fhval[NFS4_FHSIZE];
+ struct nfs4_delegation *cbr_dp;
+};
+
+struct nfs4_delegation {
+ struct list_head dl_del_perfile; /* nfs4_file->fi_del_perfile */
+ struct list_head dl_del_perclnt; /* nfs4_client->cl_del_perclnt*/
+ struct list_head dl_recall_lru; /* delegation recalled */
+ atomic_t dl_count; /* ref count */
+ struct nfs4_client *dl_client;
+ struct nfs4_file *dl_file;
+ struct file_lock *dl_flock;
+ struct file *dl_vfs_file;
+ u32 dl_type;
+ time_t dl_time;
+ struct nfs4_cb_recall dl_recall;
+};
+
+#define dl_stateid dl_recall.cbr_stateid
+#define dl_fhlen dl_recall.cbr_fhlen
+#define dl_fhval dl_recall.cbr_fhval
+
+/* client delegation callback info */
+struct nfs4_callback {
+ /* SETCLIENTID info */
+ u32 cb_parsed; /* addr parsed */
+ u32 cb_addr;
+ unsigned short cb_port;
+ u32 cb_prog;
+ u32 cb_ident;
+ /* RPC client info */
+ atomic_t cb_set; /* successful CB_NULL call */
+ struct rpc_program cb_program;
+ struct rpc_stat cb_stat;
+ struct rpc_clnt * cb_client;
+};
+
+/*
+ * struct nfs4_client - one per client. Clientids live here.
+ * o Each nfs4_client is hashed by clientid.
+ *
+ * o Each nfs4_clients is also hashed by name
+ * (the opaque quantity initially sent by the client to identify itself).
+ *
+ * o cl_perclient list is used to ensure no dangling stateowner references
+ * when we expire the nfs4_client
+ */
+struct nfs4_client {
+ struct list_head cl_idhash; /* hash by cl_clientid.id */
+ struct list_head cl_strhash; /* hash by cl_name */
+ struct list_head cl_perclient; /* list: stateowners */
+ struct list_head cl_del_perclnt; /* list: delegations */
+ struct list_head cl_lru; /* tail queue */
+ struct xdr_netobj cl_name; /* id generated by client */
+ nfs4_verifier cl_verifier; /* generated by client */
+ time_t cl_time; /* time of last lease renewal */
+ u32 cl_addr; /* client ipaddress */
+ struct svc_cred cl_cred; /* setclientid principal */
+ clientid_t cl_clientid; /* generated by server */
+ nfs4_verifier cl_confirm; /* generated by server */
+ struct nfs4_callback cl_callback; /* callback info */
+ atomic_t cl_count; /* ref count */
+};
+
+/* struct nfs4_client_reset
+ * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl
+ * upon lease reset, or from upcall to state_daemon (to read in state
+ * from non-volitile storage) upon reboot.
+ */
+struct nfs4_client_reclaim {
+ struct list_head cr_strhash; /* hash by cr_name */
+ struct xdr_netobj cr_name; /* id generated by client */
+};
+
+static inline void
+update_stateid(stateid_t *stateid)
+{
+ stateid->si_generation++;
+}
+
+/* A reasonable value for REPLAY_ISIZE was estimated as follows:
+ * The OPEN response, typically the largest, requires
+ * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) +
+ * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) +
+ * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes
+ */
+
+#define NFSD4_REPLAY_ISIZE 112
+
+/*
+ * Replay buffer, where the result of the last seqid-mutating operation
+ * is cached.
+ */
+struct nfs4_replay {
+ u32 rp_status;
+ unsigned int rp_buflen;
+ char *rp_buf;
+ unsigned intrp_allocated;
+ int rp_openfh_len;
+ char rp_openfh[NFS4_FHSIZE];
+ char rp_ibuf[NFSD4_REPLAY_ISIZE];
+};
+
+/*
+* nfs4_stateowner can either be an open_owner, or a lock_owner
+*
+* so_idhash: stateid_hashtbl[] for open owner, lockstateid_hashtbl[]
+* for lock_owner
+* so_strhash: ownerstr_hashtbl[] for open_owner, lock_ownerstr_hashtbl[]
+* for lock_owner
+* so_perclient: nfs4_client->cl_perclient entry - used when nfs4_client
+* struct is reaped.
+* so_perfilestate: heads the list of nfs4_stateid (either open or lock)
+* and is used to ensure no dangling nfs4_stateid references when we
+* release a stateowner.
+* so_perlockowner: (open) nfs4_stateid->st_perlockowner entry - used when
+* close is called to reap associated byte-range locks
+* so_close_lru: (open) stateowner is placed on this list instead of being
+* reaped (when so_perfilestate is empty) to hold the last close replay.
+* reaped by laundramat thread after lease period.
+*/
+struct nfs4_stateowner {
+ struct kref so_ref;
+ struct list_head so_idhash; /* hash by so_id */
+ struct list_head so_strhash; /* hash by op_name */
+ struct list_head so_perclient; /* nfs4_client->cl_perclient */
+ struct list_head so_perfilestate; /* list: nfs4_stateid */
+ struct list_head so_perlockowner; /* nfs4_stateid->st_perlockowner */
+ struct list_head so_close_lru; /* tail queue */
+ time_t so_time; /* time of placement on so_close_lru */
+ int so_is_open_owner; /* 1=openowner,0=lockowner */
+ u32 so_id;
+ struct nfs4_client * so_client;
+ u32 so_seqid;
+ struct xdr_netobj so_owner; /* open owner name */
+ int so_confirmed; /* successful OPEN_CONFIRM? */
+ struct nfs4_replay so_replay;
+};
+
+/*
+* nfs4_file: a file opened by some number of (open) nfs4_stateowners.
+* o fi_perfile list is used to search for conflicting
+* share_acces, share_deny on the file.
+*/
+struct nfs4_file {
+ struct list_head fi_hash; /* hash by "struct inode *" */
+ struct list_head fi_perfile; /* list: nfs4_stateid */
+ struct list_head fi_del_perfile; /* list: nfs4_delegation */
+ struct inode *fi_inode;
+ u32 fi_id; /* used with stateowner->so_id
+ * for stateid_hashtbl hash */
+};
+
+/*
+* nfs4_stateid can either be an open stateid or (eventually) a lock stateid
+*
+* (open)nfs4_stateid: one per (open)nfs4_stateowner, nfs4_file
+*
+* st_hash: stateid_hashtbl[] entry or lockstateid_hashtbl entry
+* st_perfile: file_hashtbl[] entry.
+* st_perfile_state: nfs4_stateowner->so_perfilestate
+* st_perlockowner: (open stateid) list of lock nfs4_stateowners
+* st_access_bmap: used only for open stateid
+* st_deny_bmap: used only for open stateid
+*/
+
+struct nfs4_stateid {
+ struct list_head st_hash;
+ struct list_head st_perfile;
+ struct list_head st_perfilestate;
+ struct list_head st_perlockowner;
+ struct nfs4_stateowner * st_stateowner;
+ struct nfs4_file * st_file;
+ stateid_t st_stateid;
+ struct file * st_vfs_file;
+ unsigned long st_access_bmap;
+ unsigned long st_deny_bmap;
+};
+
+/* flags for preprocess_seqid_op() */
+#define CHECK_FH 0x00000001
+#define CONFIRM 0x00000002
+#define OPEN_STATE 0x00000004
+#define LOCK_STATE 0x00000008
+#define RD_STATE 0x00000010
+#define WR_STATE 0x00000020
+#define CLOSE_STATE 0x00000040
+#define DELEG_RET 0x00000080
+
+#define seqid_mutating_err(err) \
+ (((err) != nfserr_stale_clientid) && \
+ ((err) != nfserr_bad_seqid) && \
+ ((err) != nfserr_stale_stateid) && \
+ ((err) != nfserr_bad_stateid))
+
+extern time_t nfs4_laundromat(void);
+extern int nfsd4_renew(clientid_t *clid);
+extern int nfs4_preprocess_stateid_op(struct svc_fh *current_fh,
+ stateid_t *stateid, int flags, struct file **filp);
+extern int nfs4_share_conflict(struct svc_fh *current_fh,
+ unsigned int deny_type);
+extern void nfs4_lock_state(void);
+extern void nfs4_unlock_state(void);
+extern int nfs4_in_grace(void);
+extern int nfs4_check_open_reclaim(clientid_t *clid);
+extern void put_nfs4_client(struct nfs4_client *clp);
+extern void nfs4_free_stateowner(struct kref *kref);
+extern void nfsd4_probe_callback(struct nfs4_client *clp);
+extern void nfsd4_cb_recall(struct nfs4_delegation *dp);
+extern void nfs4_put_delegation(struct nfs4_delegation *dp);
+
+static inline void
+nfs4_put_stateowner(struct nfs4_stateowner *so)
+{
+ kref_put(&so->so_ref, nfs4_free_stateowner);
+}
+
+static inline void
+nfs4_get_stateowner(struct nfs4_stateowner *so)
+{
+ kref_get(&so->so_ref);
+}
+
+#endif /* NFSD4_STATE_H */