1 files changed, 97 insertions, 0 deletions
diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h
new file mode 100644
index 00000000..a7b422b3
--- /dev/null
+++ b/include/linux/sunrpc/rpc_pipe_fs.h
@@ -0,0 +1,97 @@
+#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H
+#define _LINUX_SUNRPC_RPC_PIPE_FS_H
+
+#ifdef __KERNEL__
+
+#include <linux/workqueue.h>
+
+struct rpc_pipe_msg {
+	struct list_head list;
+	void *data;
+	size_t len;
+	size_t copied;
+	int errno;
+};
+
+struct rpc_pipe_ops {
+	ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t);
+	ssize_t (*downcall)(struct file *, const char __user *, size_t);
+	void (*release_pipe)(struct inode *);
+	int (*open_pipe)(struct inode *);
+	void (*destroy_msg)(struct rpc_pipe_msg *);
+};
+
+struct rpc_pipe {
+	struct list_head pipe;
+	struct list_head in_upcall;
+	struct list_head in_downcall;
+	int pipelen;
+	int nreaders;
+	int nwriters;
+#define RPC_PIPE_WAIT_FOR_OPEN	1
+	int flags;
+	struct delayed_work queue_timeout;
+	const struct rpc_pipe_ops *ops;
+	spinlock_t lock;
+	struct dentry *dentry;
+};
+
+struct rpc_inode {
+	struct inode vfs_inode;
+	void *private;
+	struct rpc_pipe *pipe;
+	wait_queue_head_t waitq;
+};
+
+static inline struct rpc_inode *
+RPC_I(struct inode *inode)
+{
+	return container_of(inode, struct rpc_inode, vfs_inode);
+}
+
+enum {
+	SUNRPC_PIPEFS_NFS_PRIO,
+	SUNRPC_PIPEFS_RPC_PRIO,
+};
+
+extern int rpc_pipefs_notifier_register(struct notifier_block *);
+extern void rpc_pipefs_notifier_unregister(struct notifier_block *);
+
+enum {
+	RPC_PIPEFS_MOUNT,
+	RPC_PIPEFS_UMOUNT,
+};
+
+extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb,
+				      const unsigned char *dir_name);
+extern void rpc_pipefs_init_net(struct net *net);
+extern struct super_block *rpc_get_sb_net(const struct net *net);
+extern void rpc_put_sb_net(const struct net *net);
+
+extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *,
+				       char __user *, size_t);
+extern int rpc_queue_upcall(struct rpc_pipe *, struct rpc_pipe_msg *);
+
+struct rpc_clnt;
+extern struct dentry *rpc_create_client_dir(struct dentry *, struct qstr *, struct rpc_clnt *);
+extern int rpc_remove_client_dir(struct dentry *);
+
+struct cache_detail;
+extern struct dentry *rpc_create_cache_dir(struct dentry *,
+					   struct qstr *,
+					   umode_t umode,
+					   struct cache_detail *);
+extern void rpc_remove_cache_dir(struct dentry *);
+
+extern int rpc_rmdir(struct dentry *dentry);
+
+struct rpc_pipe *rpc_mkpipe_data(const struct rpc_pipe_ops *ops, int flags);
+void rpc_destroy_pipe_data(struct rpc_pipe *pipe);
+extern struct dentry *rpc_mkpipe_dentry(struct dentry *, const char *, void *,
+					struct rpc_pipe *);
+extern int rpc_unlink(struct dentry *);
+extern int register_rpc_pipefs(void);
+extern void unregister_rpc_pipefs(void);
+
+#endif
+#endif