diff options
Diffstat (limited to 'include/linux/lockd/lockd.h')
| -rw-r--r-- | include/linux/lockd/lockd.h | 72 |
1 files changed, 46 insertions, 26 deletions
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index b56d5aa9b194..aa6fe7026de7 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -43,12 +43,13 @@ struct nlm_host { struct sockaddr_storage h_addr; /* peer address */ size_t h_addrlen; struct sockaddr_storage h_srcaddr; /* our address (optional) */ - struct rpc_clnt * h_rpcclnt; /* RPC client to talk to peer */ - char * h_name; /* remote hostname */ + 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_noresvport : 1, h_inuse : 1; wait_queue_head_t h_gracewait; /* wait while reclaiming */ struct rw_semaphore h_rwsem; /* Reboot recovery lock */ @@ -63,21 +64,29 @@ 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 */ - - char h_addrbuf[48], /* address eyecatchers */ - h_srcaddrbuf[48]; + struct nsm_handle *h_nsmhandle; /* NSM status handle */ + char *h_addrbuf; /* address eyecatcher */ }; +/* + * The largest string sm_addrbuf should hold is a full-size IPv6 address + * (no "::" anywhere) with a scope ID. The buffer size is computed to + * hold eight groups of colon-separated four-hex-digit numbers, a + * percent sign, a scope id (at most 32 bits, in decimal), and NUL. + */ +#define NSM_ADDRBUF ((8 * 4 + 7) + (1 + 10) + 1) + struct nsm_handle { struct list_head sm_link; atomic_t sm_count; - char * sm_name; + char *sm_mon_name; + char *sm_name; struct sockaddr_storage sm_addr; size_t sm_addrlen; unsigned int sm_monitored : 1, sm_sticky : 1; /* don't unmonitor */ - char sm_addrbuf[48]; /* address eyecatcher */ + struct nsm_private sm_priv; + char sm_addrbuf[NSM_ADDRBUF]; }; /* @@ -103,16 +112,6 @@ static inline struct sockaddr *nlm_srcaddr(const struct nlm_host *host) return (struct sockaddr *)&host->h_srcaddr; } -static inline struct sockaddr_in *nsm_addr_in(const struct nsm_handle *handle) -{ - return (struct sockaddr_in *)&handle->sm_addr; -} - -static inline struct sockaddr *nsm_addr(const struct nsm_handle *handle) -{ - return (struct sockaddr *)&handle->sm_addr; -} - /* * Map an fl_owner_t into a unique 32-bit "pid" */ @@ -196,6 +195,7 @@ extern struct svc_procedure nlmsvc_procedures4[]; extern int nlmsvc_grace_period; extern unsigned long nlmsvc_timeout; extern int nsm_use_hostnames; +extern int nsm_local_state; /* * Lockd client functions @@ -220,7 +220,8 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, const size_t salen, const unsigned short protocol, const u32 version, - const char *hostname); + const char *hostname, + int noresvport); struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, const char *hostname, const size_t hostname_len); @@ -229,10 +230,20 @@ 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 void nlm_host_rebooted(const struct sockaddr_in *, const char *, - unsigned int, u32); -void nsm_release(struct nsm_handle *); +void nlm_host_rebooted(const struct nlm_reboot *); + +/* + * Host monitoring + */ +int nsm_monitor(const struct nlm_host *host); +void nsm_unmonitor(const struct nlm_host *host); +struct nsm_handle *nsm_get_handle(const struct sockaddr *sap, + const size_t salen, + const char *hostname, + const size_t hostname_len); +struct nsm_handle *nsm_reboot_lookup(const struct nlm_reboot *info); +void nsm_release(struct nsm_handle *nsm); /* * This is used in garbage collection and resource reclaim @@ -280,16 +291,25 @@ static inline struct inode *nlmsvc_file_inode(struct nlm_file *file) static inline int __nlm_privileged_request4(const struct sockaddr *sap) { const struct sockaddr_in *sin = (struct sockaddr_in *)sap; - return (sin->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) && - (ntohs(sin->sin_port) < 1024); + + if (ntohs(sin->sin_port) > 1023) + return 0; + + return ipv4_is_loopback(sin->sin_addr.s_addr); } #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) static inline int __nlm_privileged_request6(const struct sockaddr *sap) { const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap; - return (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LOOPBACK) && - (ntohs(sin6->sin6_port) < 1024); + + if (ntohs(sin6->sin6_port) > 1023) + return 0; + + if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_MAPPED) + return ipv4_is_loopback(sin6->sin6_addr.s6_addr32[3]); + + return ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LOOPBACK; } #else /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */ static inline int __nlm_privileged_request6(const struct sockaddr *sap) |