diff options
Diffstat (limited to 'include/linux/lockd/lockd.h')
| -rw-r--r-- | include/linux/lockd/lockd.h | 63 |
1 files changed, 36 insertions, 27 deletions
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index 0d92c468d55aee..2909619c029589 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -37,17 +37,15 @@ * Lockd host handle (used both by the client and server personality). */ struct nlm_host { - struct nlm_host * h_next; /* linked list (hash table) */ + struct hlist_node h_hash; /* doubly linked list */ struct sockaddr_in h_addr; /* peer address */ struct rpc_clnt * h_rpcclnt; /* RPC client to talk to peer */ - char h_name[20]; /* remote hostname */ + char * h_name; /* remote hostname */ u32 h_version; /* interface version */ unsigned short h_proto; /* transport proto */ unsigned short h_reclaiming : 1, h_server : 1, /* server side, not client side */ - h_inuse : 1, - h_killed : 1, - h_monitored : 1; + h_inuse : 1; wait_queue_head_t h_gracewait; /* wait while reclaiming */ struct rw_semaphore h_rwsem; /* Reboot recovery lock */ u32 h_state; /* pseudo-state counter */ @@ -61,6 +59,16 @@ struct nlm_host { spinlock_t h_lock; struct list_head h_granted; /* Locks in GRANTED state */ struct list_head h_reclaim; /* Locks in RECLAIM state */ + struct nsm_handle * h_nsmhandle; /* NSM status handle */ +}; + +struct nsm_handle { + struct list_head sm_link; + atomic_t sm_count; + char * sm_name; + struct sockaddr_in sm_addr; + unsigned int sm_monitored : 1, + sm_sticky : 1; /* don't unmonitor */ }; /* @@ -80,7 +88,7 @@ struct nlm_wait; /* * Memory chunk for NLM client RPC request. */ -#define NLMCLNT_OHSIZE (sizeof(system_utsname.nodename)+10) +#define NLMCLNT_OHSIZE (sizeof(utsname()->nodename)+10) struct nlm_rqst { unsigned int a_flags; /* initial RPC task flags */ struct nlm_host * a_host; /* host handle */ @@ -96,15 +104,14 @@ struct nlm_rqst { * an NFS client. */ struct nlm_file { - struct nlm_file * f_next; /* linked list */ + struct hlist_node f_list; /* linked list */ struct nfs_fh f_handle; /* NFS file handle */ struct file * f_file; /* VFS file pointer */ struct nlm_share * f_shares; /* DOS shares */ - struct nlm_block * f_blocks; /* blocked locks */ + struct list_head f_blocks; /* blocked locks */ unsigned int f_locks; /* guesstimate # of locks */ unsigned int f_count; /* reference count */ - struct semaphore f_sema; /* avoid concurrent access */ - int f_hash; /* hash of f_handle */ + struct mutex f_mutex; /* avoid concurrent access */ }; /* @@ -114,26 +121,18 @@ struct nlm_file { #define NLM_NEVER (~(unsigned long) 0) struct nlm_block { struct kref b_count; /* Reference count */ - struct nlm_block * b_next; /* linked list (all blocks) */ - struct nlm_block * b_fnext; /* linked list (per file) */ + struct list_head b_list; /* linked list of all blocks */ + struct list_head b_flist; /* linked list (per file) */ struct nlm_rqst * b_call; /* RPC args & callback info */ struct svc_serv * b_daemon; /* NLM service */ struct nlm_host * b_host; /* host handle for RPC clnt */ unsigned long b_when; /* next re-xmit */ unsigned int b_id; /* block id */ - unsigned char b_queued; /* re-queued */ unsigned char b_granted; /* VFS granted lock */ struct nlm_file * b_file; /* file in question */ }; /* - * Valid actions for nlmsvc_traverse_files - */ -#define NLM_ACT_CHECK 0 /* check for locks */ -#define NLM_ACT_MARK 1 /* mark & sweep */ -#define NLM_ACT_UNLOCK 2 /* release all locks */ - -/* * Global variables */ extern struct rpc_program nlm_program; @@ -143,6 +142,7 @@ extern struct svc_procedure nlmsvc_procedures4[]; #endif extern int nlmsvc_grace_period; extern unsigned long nlmsvc_timeout; +extern int nsm_use_hostnames; /* * Lockd client functions @@ -155,22 +155,31 @@ struct nlm_wait * nlmclnt_prepare_block(struct nlm_host *host, struct file_lock void nlmclnt_finish_block(struct nlm_wait *block); int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout); u32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *); -void nlmclnt_recovery(struct nlm_host *, u32); +void nlmclnt_recovery(struct nlm_host *); int nlmclnt_reclaim(struct nlm_host *, struct file_lock *); +void nlmclnt_next_cookie(struct nlm_cookie *); /* * Host cache */ -struct nlm_host * nlmclnt_lookup_host(struct sockaddr_in *, int, int); -struct nlm_host * nlmsvc_lookup_host(struct svc_rqst *); -struct nlm_host * nlm_lookup_host(int server, struct sockaddr_in *, int, int); +struct nlm_host * nlmclnt_lookup_host(const struct sockaddr_in *, int, int, const char *, int); +struct nlm_host * nlmsvc_lookup_host(struct svc_rqst *, const char *, int); +struct nlm_host * nlm_lookup_host(int server, const struct sockaddr_in *, int, int, const char *, int); struct rpc_clnt * nlm_bind_host(struct nlm_host *); void nlm_rebind_host(struct nlm_host *); struct nlm_host * nlm_get_host(struct nlm_host *); void nlm_release_host(struct nlm_host *); void nlm_shutdown_hosts(void); -extern struct nlm_host *nlm_find_client(void); +extern void nlm_host_rebooted(const struct sockaddr_in *, const char *, int, u32); +struct nsm_handle *nsm_find(const struct sockaddr_in *, const char *, int); +void nsm_release(struct nsm_handle *); + +/* + * This is used in garbage collection and resource reclaim + * A return value != 0 means destroy the lock/block/share + */ +typedef int (*nlm_host_match_fn_t)(struct nlm_host *cur, struct nlm_host *ref); /* * Server-side lock handling @@ -183,8 +192,8 @@ u32 nlmsvc_testlock(struct nlm_file *, struct nlm_lock *, u32 nlmsvc_cancel_blocked(struct nlm_file *, struct nlm_lock *); unsigned long nlmsvc_retry_blocked(void); void nlmsvc_traverse_blocks(struct nlm_host *, struct nlm_file *, - int action); -void nlmsvc_grant_reply(struct svc_rqst *, struct nlm_cookie *, u32); + nlm_host_match_fn_t match); +void nlmsvc_grant_reply(struct nlm_cookie *, u32); /* * File handling for the server personality |