1#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H 2#define _LINUX_SUNRPC_RPC_PIPE_FS_H 3 4#ifdef __KERNEL__ 5 6struct rpc_pipe_msg { 7 struct list_head list; 8 void *data; 9 size_t len; 10 size_t copied; 11 int errno; 12}; 13 14struct 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 21struct 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 delayed_work queue_timeout; 34}; 35 36static inline struct rpc_inode * 37RPC_I(struct inode *inode) 38{ 39 return container_of(inode, struct rpc_inode, vfs_inode); 40} 41 42extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *); 43 44extern struct dentry *rpc_mkdir(char *, struct rpc_clnt *); 45extern int rpc_rmdir(struct dentry *); 46extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, struct rpc_pipe_ops *, int flags); 47extern int rpc_unlink(struct dentry *); 48extern struct vfsmount *rpc_get_mount(void); 49extern void rpc_put_mount(void); 50extern int register_rpc_pipefs(void); 51extern void unregister_rpc_pipefs(void); 52 53#endif 54#endif 55