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 51