#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H #define _LINUX_SUNRPC_RPC_PIPE_FS_H #ifdef __KERNEL__ #include <linux/workqueue.h> struct rpc_pipe_dir_head { struct list_head pdh_entries; struct dentry *pdh_dentry; }; struct rpc_pipe_dir_object_ops; struct rpc_pipe_dir_object { struct list_head pdo_head; const struct rpc_pipe_dir_object_ops *pdo_ops; void *pdo_data; }; struct rpc_pipe_dir_object_ops { int (*create)(struct dentry *dir, struct rpc_pipe_dir_object *pdo); void (*destroy)(struct dentry *dir, struct rpc_pipe_dir_object *pdo); }; 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 int rpc_pipefs_init_net(struct net *net); extern void rpc_pipefs_exit_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 *, const char *, struct rpc_clnt *); extern int rpc_remove_client_dir(struct rpc_clnt *); extern void rpc_init_pipe_dir_head(struct rpc_pipe_dir_head *pdh); extern void rpc_init_pipe_dir_object(struct rpc_pipe_dir_object *pdo, const struct rpc_pipe_dir_object_ops *pdo_ops, void *pdo_data); extern int rpc_add_pipe_dir_object(struct net *net, struct rpc_pipe_dir_head *pdh, struct rpc_pipe_dir_object *pdo); extern void rpc_remove_pipe_dir_object(struct net *net, struct rpc_pipe_dir_head *pdh, struct rpc_pipe_dir_object *pdo); extern struct rpc_pipe_dir_object *rpc_find_or_alloc_pipe_dir_object( struct net *net, struct rpc_pipe_dir_head *pdh, int (*match)(struct rpc_pipe_dir_object *, void *), struct rpc_pipe_dir_object *(*alloc)(void *), void *data); struct cache_detail; extern struct dentry *rpc_create_cache_dir(struct dentry *, const char *, 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); extern bool gssd_running(struct net *net); #endif #endif