* 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 sockaddr_in h_saddr; /* our address (optional) */
struct rpc_clnt * h_rpcclnt; /* RPC client to talk to peer */
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_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 */
/*
* Memory chunk for NLM client RPC request.
*/
-#define NLMCLNT_OHSIZE (sizeof(utsname()->nodename)+10)
+#define NLMCLNT_OHSIZE ((__NEW_UTS_LEN) + 10u)
struct nlm_rqst {
+ atomic_t a_count;
unsigned int a_flags; /* initial RPC task flags */
struct nlm_host * a_host; /* host handle */
struct nlm_args a_args; /* arguments */
* 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 */
};
/*
* couldn't be granted because of a conflicting lock).
*/
#define NLM_NEVER (~(unsigned long) 0)
+/* timeout on non-blocking call: */
+#define NLM_TIMEOUT (7 * HZ)
+
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 */
+ struct cache_req * b_cache_req; /* deferred request handling */
+ struct file_lock * b_fl; /* set for GETLK */
+ struct cache_deferred_req * b_deferred_req;
+ unsigned int b_flags; /* block flags */
+#define B_QUEUED 1 /* lock queued */
+#define B_GOT_CALLBACK 2 /* got lock or conflicting lock */
+#define B_TIMED_OUT 4 /* filesystem too slow to respond */
};
/*
- * 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;
#endif
extern int nlmsvc_grace_period;
extern unsigned long nlmsvc_timeout;
+extern int nsm_use_hostnames;
/*
* Lockd client functions
struct nlm_wait * nlmclnt_prepare_block(struct nlm_host *host, struct file_lock *fl);
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);
+__be32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *);
+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(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 nlm_host *nlmclnt_lookup_host(const struct sockaddr_in *sin,
+ int proto, u32 version,
+ const char *hostname,
+ unsigned int hostname_len);
+struct nlm_host *nlmsvc_lookup_host(struct svc_rqst *, const char *,
+ unsigned 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 struct nlm_reboot *);
-struct nsm_handle *nsm_find(const struct sockaddr_in *, const char *, int);
+extern void nlm_host_rebooted(const struct sockaddr_in *, const char *,
+ unsigned int, u32);
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)(void *cur, struct nlm_host *ref);
+
+/*
* Server-side lock handling
*/
-u32 nlmsvc_lock(struct svc_rqst *, struct nlm_file *,
- struct nlm_lock *, int, struct nlm_cookie *);
-u32 nlmsvc_unlock(struct nlm_file *, struct nlm_lock *);
-u32 nlmsvc_testlock(struct nlm_file *, struct nlm_lock *,
- struct nlm_lock *);
-u32 nlmsvc_cancel_blocked(struct nlm_file *, struct nlm_lock *);
+__be32 nlmsvc_lock(struct svc_rqst *, struct nlm_file *,
+ struct nlm_host *, struct nlm_lock *, int,
+ struct nlm_cookie *);
+__be32 nlmsvc_unlock(struct nlm_file *, struct nlm_lock *);
+__be32 nlmsvc_testlock(struct svc_rqst *, struct nlm_file *,
+ struct nlm_host *, struct nlm_lock *,
+ struct nlm_lock *, struct nlm_cookie *);
+__be32 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 *, __be32);
/*
* File handling for the server personality
*/
-u32 nlm_lookup_file(struct svc_rqst *, struct nlm_file **,
+__be32 nlm_lookup_file(struct svc_rqst *, struct nlm_file **,
struct nfs_fh *);
void nlm_release_file(struct nlm_file *);
void nlmsvc_mark_resources(void);
void nlmsvc_free_host_resources(struct nlm_host *);
void nlmsvc_invalidate_all(void);
-static __inline__ struct inode *
-nlmsvc_file_inode(struct nlm_file *file)
+/*
+ * Cluster failover support
+ */
+int nlmsvc_unlock_all_by_sb(struct super_block *sb);
+int nlmsvc_unlock_all_by_ip(struct sockaddr *server_addr);
+
+static inline struct inode *nlmsvc_file_inode(struct nlm_file *file)
{
- return file->f_file->f_dentry->d_inode;
+ return file->f_file->f_path.dentry->d_inode;
}
/*
* Compare two host addresses (needs modifying for ipv6)
*/
-static __inline__ int
-nlm_cmp_addr(const struct sockaddr_in *sin1, const struct sockaddr_in *sin2)
+static inline int nlm_cmp_addr(const struct sockaddr_in *sin1,
+ const struct sockaddr_in *sin2)
{
return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
}
* Compare two NLM locks.
* When the second lock is of type F_UNLCK, this acts like a wildcard.
*/
-static __inline__ int
-nlm_compare_locks(const struct file_lock *fl1, const struct file_lock *fl2)
+static inline int nlm_compare_locks(const struct file_lock *fl1,
+ const struct file_lock *fl2)
{
return fl1->fl_pid == fl2->fl_pid
&& fl1->fl_owner == fl2->fl_owner