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!

1 files changed, 298 insertions, 0 deletions

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 */