1 #ifndef _NFS_FS_SB 2 #define _NFS_FS_SB 3 4 #include <linux/list.h> 5 #include <linux/backing-dev.h> 6 #include <linux/wait.h> 7 8 #include <asm/atomic.h> 9 10 struct nfs_iostats; 11 struct nlm_host; 12 13 /* 14 * The nfs_client identifies our client state to the server. 15 */ 16 struct nfs_client { 17 atomic_t cl_count; 18 int cl_cons_state; /* current construction state (-ve: init error) */ 19 #define NFS_CS_READY 0 /* ready to be used */ 20 #define NFS_CS_INITING 1 /* busy initialising */ 21 unsigned long cl_res_state; /* NFS resources state */ 22 #define NFS_CS_CALLBACK 1 /* - callback started */ 23 #define NFS_CS_IDMAP 2 /* - idmap started */ 24 #define NFS_CS_RENEWD 3 /* - renewd started */ 25 struct sockaddr_storage cl_addr; /* server identifier */ 26 size_t cl_addrlen; 27 char * cl_hostname; /* hostname of server */ 28 struct list_head cl_share_link; /* link in global client list */ 29 struct list_head cl_superblocks; /* List of nfs_server structs */ 30 31 struct rpc_clnt * cl_rpcclient; 32 const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ 33 int cl_proto; /* Network transport protocol */ 34 35 struct rpc_cred *cl_machine_cred; 36 37 #ifdef CONFIG_NFS_V4 38 u64 cl_clientid; /* constant */ 39 nfs4_verifier cl_confirm; 40 unsigned long cl_state; 41 42 struct rb_root cl_openowner_id; 43 struct rb_root cl_lockowner_id; 44 45 struct list_head cl_delegations; 46 struct rb_root cl_state_owners; 47 spinlock_t cl_lock; 48 49 unsigned long cl_lease_time; 50 unsigned long cl_last_renewal; 51 struct delayed_work cl_renewd; 52 53 struct rpc_wait_queue cl_rpcwaitq; 54 55 /* used for the setclientid verifier */ 56 struct timespec cl_boot_time; 57 58 /* idmapper */ 59 struct idmap * cl_idmap; 60 61 /* Our own IP address, as a null-terminated string. 62 * This is used to generate the clientid, and the callback address. 63 */ 64 char cl_ipaddr[48]; 65 unsigned char cl_id_uniquifier; 66 #endif 67 }; 68 69 /* 70 * NFS client parameters stored in the superblock. 71 */ 72 struct nfs_server { 73 struct nfs_client * nfs_client; /* shared client and NFS4 state */ 74 struct list_head client_link; /* List of other nfs_server structs 75 * that share the same client 76 */ 77 struct list_head master_link; /* link in master servers list */ 78 struct rpc_clnt * client; /* RPC client handle */ 79 struct rpc_clnt * client_acl; /* ACL RPC client handle */ 80 struct nlm_host *nlm_host; /* NLM client handle */ 81 struct nfs_iostats * io_stats; /* I/O statistics */ 82 struct backing_dev_info backing_dev_info; 83 atomic_long_t writeback; /* number of writeback pages */ 84 int flags; /* various flags */ 85 unsigned int caps; /* server capabilities */ 86 unsigned int rsize; /* read size */ 87 unsigned int rpages; /* read size (in pages) */ 88 unsigned int wsize; /* write size */ 89 unsigned int wpages; /* write size (in pages) */ 90 unsigned int wtmult; /* server disk block size */ 91 unsigned int dtsize; /* readdir size */ 92 unsigned short port; /* "port=" setting */ 93 unsigned int bsize; /* server block size */ 94 unsigned int acregmin; /* attr cache timeouts */ 95 unsigned int acregmax; 96 unsigned int acdirmin; 97 unsigned int acdirmax; 98 unsigned int namelen; 99 100 struct nfs_fsid fsid; 101 __u64 maxfilesize; /* maximum file size */ 102 unsigned long mount_time; /* when this fs was mounted */ 103 dev_t s_dev; /* superblock dev numbers */ 104 105 #ifdef CONFIG_NFS_V4 106 u32 attr_bitmask[2];/* V4 bitmask representing the set 107 of attributes supported on this 108 filesystem */ 109 u32 acl_bitmask; /* V4 bitmask representing the ACEs 110 that are supported on this 111 filesystem */ 112 #endif 113 void (*destroy)(struct nfs_server *); 114 115 atomic_t active; /* Keep trace of any activity to this server */ 116 117 /* mountd-related mount options */ 118 struct sockaddr_storage mountd_address; 119 size_t mountd_addrlen; 120 u32 mountd_version; 121 unsigned short mountd_port; 122 unsigned short mountd_protocol; 123 }; 124 125 /* Server capabilities */ 126 #define NFS_CAP_READDIRPLUS (1U << 0) 127 #define NFS_CAP_HARDLINKS (1U << 1) 128 #define NFS_CAP_SYMLINKS (1U << 2) 129 #define NFS_CAP_ACLS (1U << 3) 130 #define NFS_CAP_ATOMIC_OPEN (1U << 4) 131 132 #endif 133