include/linux/nfs_fs_sb.h

   1 #ifndef _NFS_FS_SB
   2 #define _NFS_FS_SB
   3
   4 #include <linux/list.h>
   5 #include <linux/backing-dev.h>
   6
   7 struct nfs_iostats;
   8
   9 /*
  10  * NFS client parameters stored in the superblock.
  11  */
  12 struct nfs_server {
  13         struct rpc_clnt *       client;         /* RPC client handle */
  14         struct rpc_clnt *       client_sys;     /* 2nd handle for FSINFO */
  15         struct rpc_clnt *       client_acl;     /* ACL RPC client handle */
  16         struct nfs_rpc_ops *    rpc_ops;        /* NFS protocol vector */
  17         struct nfs_iostats *    io_stats;       /* I/O statistics */
  18         struct backing_dev_info backing_dev_info;
  19         int                     flags;          /* various flags */
  20         unsigned int            caps;           /* server capabilities */
  21         unsigned int            rsize;          /* read size */
  22         unsigned int            rpages;         /* read size (in pages) */
  23         unsigned int            wsize;          /* write size */
  24         unsigned int            wpages;         /* write size (in pages) */
  25         unsigned int            wtmult;         /* server disk block size */
  26         unsigned int            dtsize;         /* readdir size */
  27         unsigned int            bsize;          /* server block size */
  28         unsigned int            acregmin;       /* attr cache timeouts */
  29         unsigned int            acregmax;
  30         unsigned int            acdirmin;
  31         unsigned int            acdirmax;
  32         unsigned long           retrans_timeo;  /* retransmit timeout */
  33         unsigned int            retrans_count;  /* number of retransmit tries */
  34         unsigned int            namelen;
  35         char *                  hostname;       /* remote hostname */
  36         struct nfs_fh           fh;
  37         struct sockaddr_in      addr;
  38         struct nfs_fsid         fsid;
  39         unsigned long           mount_time;     /* when this fs was mounted */
  40 #ifdef CONFIG_NFS_V4
  41         /* Our own IP address, as a null-terminated string.
  42          * This is used to generate the clientid, and the callback address.
  43          */
  44         char                    ip_addr[16];
  45         char *                  mnt_path;
  46         struct nfs4_client *    nfs4_state;     /* all NFSv4 state starts here */
  47         struct list_head        nfs4_siblings;  /* List of other nfs_server structs
  48                                                  * that share the same clientid
  49                                                  */
  50         u32                     attr_bitmask[2];/* V4 bitmask representing the set
  51                                                    of attributes supported on this
  52                                                    filesystem */
  53         u32                     acl_bitmask;    /* V4 bitmask representing the ACEs
  54                                                    that are supported on this
  55                                                    filesystem */
  56 #endif
  57 };
  58
  59 /* Server capabilities */
  60 #define NFS_CAP_READDIRPLUS     (1U << 0)
  61 #define NFS_CAP_HARDLINKS       (1U << 1)
  62 #define NFS_CAP_SYMLINKS        (1U << 2)
  63 #define NFS_CAP_ACLS            (1U << 3)
  64 #define NFS_CAP_ATOMIC_OPEN     (1U << 4)
  65
  66 #endif