#ifndef _NFS_FS_SB #define _NFS_FS_SB #include <linux/list.h> #include <linux/backing-dev.h> #include <linux/wait.h> #include <asm/atomic.h> struct nfs_iostats; struct nlm_host; /* * The nfs_client identifies our client state to the server. */ struct nfs_client { atomic_t cl_count; int cl_cons_state; /* current construction state (-ve: init error) */ #define NFS_CS_READY 0 /* ready to be used */ #define NFS_CS_INITING 1 /* busy initialising */ unsigned long cl_res_state; /* NFS resources state */ #define NFS_CS_CALLBACK 1 /* - callback started */ #define NFS_CS_IDMAP 2 /* - idmap started */ #define NFS_CS_RENEWD 3 /* - renewd started */ struct sockaddr_storage cl_addr; /* server identifier */ size_t cl_addrlen; char * cl_hostname; /* hostname of server */ struct list_head cl_share_link; /* link in global client list */ struct list_head cl_superblocks; /* List of nfs_server structs */ struct rpc_clnt * cl_rpcclient; const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ int cl_proto; /* Network transport protocol */ struct rpc_cred *cl_machine_cred; #ifdef CONFIG_NFS_V4 u64 cl_clientid; /* constant */ nfs4_verifier cl_confirm; unsigned long cl_state; struct rb_root cl_openowner_id; struct rb_root cl_lockowner_id; /* * The following rwsem ensures exclusive access to the server * while we recover the state following a lease expiration. */ struct rw_semaphore cl_sem; struct list_head cl_delegations; struct rb_root cl_state_owners; spinlock_t cl_lock; unsigned long cl_lease_time; unsigned long cl_last_renewal; struct delayed_work cl_renewd; struct rpc_wait_queue cl_rpcwaitq; /* used for the setclientid verifier */ struct timespec cl_boot_time; /* idmapper */ struct idmap * cl_idmap; /* Our own IP address, as a null-terminated string. * This is used to generate the clientid, and the callback address. */ char cl_ipaddr[48]; unsigned char cl_id_uniquifier; #endif }; /* * NFS client parameters stored in the superblock. */ struct nfs_server { struct nfs_client * nfs_client; /* shared client and NFS4 state */ struct list_head client_link; /* List of other nfs_server structs * that share the same client */ struct list_head master_link; /* link in master servers list */ struct rpc_clnt * client; /* RPC client handle */ struct rpc_clnt * client_acl; /* ACL RPC client handle */ struct nlm_host *nlm_host; /* NLM client handle */ struct nfs_iostats * io_stats; /* I/O statistics */ struct backing_dev_info backing_dev_info; atomic_long_t writeback; /* number of writeback pages */ int flags; /* various flags */ unsigned int caps; /* server capabilities */ unsigned int rsize; /* read size */ unsigned int rpages; /* read size (in pages) */ unsigned int wsize; /* write size */ unsigned int wpages; /* write size (in pages) */ unsigned int wtmult; /* server disk block size */ unsigned int dtsize; /* readdir size */ unsigned short port; /* "port=" setting */ unsigned int bsize; /* server block size */ unsigned int acregmin; /* attr cache timeouts */ unsigned int acregmax; unsigned int acdirmin; unsigned int acdirmax; unsigned int namelen; struct nfs_fsid fsid; __u64 maxfilesize; /* maximum file size */ unsigned long mount_time; /* when this fs was mounted */ dev_t s_dev; /* superblock dev numbers */ #ifdef CONFIG_NFS_V4 u32 attr_bitmask[2];/* V4 bitmask representing the set of attributes supported on this filesystem */ u32 acl_bitmask; /* V4 bitmask representing the ACEs that are supported on this filesystem */ #endif void (*destroy)(struct nfs_server *); atomic_t active; /* Keep trace of any activity to this server */ wait_queue_head_t active_wq; /* Wait for any activity to stop */ /* mountd-related mount options */ struct sockaddr_storage mountd_address; size_t mountd_addrlen; u32 mountd_version; unsigned short mountd_port; unsigned short mountd_protocol; }; /* Server capabilities */ #define NFS_CAP_READDIRPLUS (1U << 0) #define NFS_CAP_HARDLINKS (1U << 1) #define NFS_CAP_SYMLINKS (1U << 2) #define NFS_CAP_ACLS (1U << 3) #define NFS_CAP_ATOMIC_OPEN (1U << 4) #endif