include/linux/sunrpc/rpc_pipe_fs.h

   1 #ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H
   2 #define _LINUX_SUNRPC_RPC_PIPE_FS_H
   3
   4 #ifdef __KERNEL__
   5
   6 struct rpc_pipe_msg {
   7         struct list_head list;
   8         void *data;
   9         size_t len;
  10         size_t copied;
  11         int errno;
  12 };
  13
  14 struct rpc_pipe_ops {
  15         ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t);
  16         ssize_t (*downcall)(struct file *, const char __user *, size_t);
  17         void (*release_pipe)(struct inode *);
  18         void (*destroy_msg)(struct rpc_pipe_msg *);
  19 };
  20
  21 struct rpc_inode {
  22         struct inode vfs_inode;
  23         void *private;
  24         struct list_head pipe;
  25         struct list_head in_upcall;
  26         int pipelen;
  27         int nreaders;
  28         int nwriters;
  29         wait_queue_head_t waitq;
  30 #define RPC_PIPE_WAIT_FOR_OPEN  1
  31         int flags;
  32         struct rpc_pipe_ops *ops;
  33         struct work_struct queue_timeout;
  34 };
  35
  36 static inline struct rpc_inode *
  37 RPC_I(struct inode *inode)
  38 {
  39         return container_of(inode, struct rpc_inode, vfs_inode);
  40 }
  41
  42 extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *);
  43
  44 extern struct dentry *rpc_mkdir(char *, struct rpc_clnt *);
  45 extern int rpc_rmdir(char *);
  46 extern struct dentry *rpc_mkpipe(char *, void *, struct rpc_pipe_ops *, int flags);
  47 extern int rpc_unlink(char *);
  48
  49 #endif
  50 #endif