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