#define _NFSD4_STATE_H
#include <linux/list.h>
+#include <linux/kref.h>
#include <linux/sunrpc/clnt.h>
#define NFS4_OPAQUE_LIMIT 1024
#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_perfile;
+ struct list_head dl_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;
- struct xdr_netobj cb_netid;
/* RPC client info */
- u32 cb_set; /* successful CB_NULL call */
+ atomic_t cb_set; /* successful CB_NULL call */
struct rpc_program cb_program;
struct rpc_stat cb_stat;
struct rpc_clnt * cb_client;
};
+#define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */
+
/*
* struct nfs4_client - one per client. Clientids live here.
* o Each nfs4_client is hashed by clientid.
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_openowners;
+ struct list_head cl_delegations;
struct list_head cl_lru; /* tail queue */
struct xdr_netobj cl_name; /* id generated by client */
+ char cl_recdir[HEXDIR_LEN]; /* recovery dir */
nfs4_verifier cl_verifier; /* generated by client */
time_t cl_time; /* time of last lease renewal */
- u32 cl_addr; /* client ipaddress */
+ __be32 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 */
- time_t cl_first_state; /* first state aquisition*/
+ atomic_t cl_count; /* ref count */
+ u32 cl_firststate; /* recovery dir creation */
};
/* struct nfs4_client_reset
*/
struct nfs4_client_reclaim {
struct list_head cr_strhash; /* hash by cr_name */
- struct xdr_netobj cr_name; /* id generated by client */
- time_t cr_first_state; /* first state aquisition */
- u32 cr_expired; /* boolean: lease expired? */
+ char cr_recdir[HEXDIR_LEN]; /* recover dir */
};
static inline void
* is cached.
*/
struct nfs4_replay {
- u32 rp_status;
+ __be32 rp_status;
unsigned int rp_buflen;
char *rp_buf;
unsigned intrp_allocated;
* 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_perclient;
+ struct list_head so_stateids;
+ struct list_head so_perstateid; /* for lockowners only */
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;
+ /* after increment in ENCODE_SEQID_OP_TAIL, represents the next
+ * sequence id expected from the client: */
+ u32 so_seqid;
struct xdr_netobj so_owner; /* open owner name */
int so_confirmed; /* successful OPEN_CONFIRM? */
struct nfs4_replay so_replay;
* share_acces, share_deny on the file.
*/
struct nfs4_file {
+ struct kref fi_ref;
struct list_head fi_hash; /* hash by "struct inode *" */
- struct list_head fi_perfile; /* list: nfs4_stateid */
+ struct list_head fi_stateids;
+ struct list_head fi_delegations;
struct inode *fi_inode;
u32 fi_id; /* used with stateowner->so_id
* for stateid_hashtbl hash */
* 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
+* st_openstp: open stateid lock stateid was derived from
+*
+* XXX: open stateids and lock stateids have diverged sufficiently that
+* we should consider defining separate structs for the two cases.
*/
struct nfs4_stateid {
struct list_head st_hash;
struct list_head st_perfile;
- struct list_head st_perfilestate;
- struct list_head st_perlockowner;
+ struct list_head st_perstateowner;
+ struct list_head st_lockowners;
struct nfs4_stateowner * st_stateowner;
struct nfs4_file * st_file;
stateid_t st_stateid;
- struct file st_vfs_file;
- int st_vfs_set;
+ struct file * st_vfs_file;
unsigned long st_access_bmap;
unsigned long st_deny_bmap;
+ struct nfs4_stateid * st_openstp;
};
/* flags for preprocess_seqid_op() */
#define CONFIRM 0x00000002
#define OPEN_STATE 0x00000004
#define LOCK_STATE 0x00000008
-#define RDWR_STATE 0x00000010
-#define CLOSE_STATE 0x00000020
+#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_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 nfs4_stateid **stpp);
-extern int nfs4_share_conflict(struct svc_fh *current_fh,
- unsigned int deny_type);
+extern __be32 nfs4_preprocess_stateid_op(struct svc_fh *current_fh,
+ stateid_t *stateid, int flags, struct file **filp);
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 __be32 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);
+extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname);
+extern void nfsd4_init_recdir(char *recdir_name);
+extern int nfsd4_recdir_load(void);
+extern void nfsd4_shutdown_recdir(void);
+extern int nfs4_client_to_reclaim(const char *name);
+extern int nfs4_has_reclaimed_state(const char *name);
+extern void nfsd4_recdir_purge_old(void);
+extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
+extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
+
+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 */
git://git.onelab.eu / linux-2.6.git / blobdiff