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- #ifndef _NFS_FS_SB
- #define _NFS_FS_SB
- #include <linux/list.h>
- #include <linux/backing-dev.h>
- struct nfs_iostats;
- /*
- * 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 */
- int cl_nfsversion; /* NFS protocol version */
- unsigned long cl_res_state; /* NFS resources state */
- #define NFS_CS_RPCIOD 0 /* - rpciod started */
- #define NFS_CS_CALLBACK 1 /* - callback started */
- #define NFS_CS_IDMAP 2 /* - idmap started */
- #define NFS_CS_RENEWD 3 /* - renewd started */
- struct sockaddr_in cl_addr; /* server identifier */
- 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 */
- unsigned long retrans_timeo; /* retransmit timeout */
- unsigned int retrans_count; /* number of retransmit tries */
- #ifdef CONFIG_NFS_V4
- u64 cl_clientid; /* constant */
- nfs4_verifier cl_confirm;
- unsigned long cl_state;
- u32 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 list_head cl_state_owners;
- struct list_head cl_unused;
- int cl_nunused;
- 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[16];
- 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 nfs_iostats * io_stats; /* I/O statistics */
- struct backing_dev_info backing_dev_info;
- atomic_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 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 *);
- };
- /* 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
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