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133 lines
3.7 KiB
133 lines
3.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H |
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#define _LINUX_SUNRPC_RPC_PIPE_FS_H |
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#include <linux/workqueue.h> |
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struct rpc_pipe_dir_head { |
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struct list_head pdh_entries; |
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struct dentry *pdh_dentry; |
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}; |
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struct rpc_pipe_dir_object_ops; |
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struct rpc_pipe_dir_object { |
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struct list_head pdo_head; |
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const struct rpc_pipe_dir_object_ops *pdo_ops; |
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void *pdo_data; |
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}; |
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struct rpc_pipe_dir_object_ops { |
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int (*create)(struct dentry *dir, |
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struct rpc_pipe_dir_object *pdo); |
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void (*destroy)(struct dentry *dir, |
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struct rpc_pipe_dir_object *pdo); |
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}; |
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struct rpc_pipe_msg { |
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struct list_head list; |
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void *data; |
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size_t len; |
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size_t copied; |
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int errno; |
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}; |
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struct rpc_pipe_ops { |
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ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t); |
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ssize_t (*downcall)(struct file *, const char __user *, size_t); |
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void (*release_pipe)(struct inode *); |
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int (*open_pipe)(struct inode *); |
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void (*destroy_msg)(struct rpc_pipe_msg *); |
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}; |
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struct rpc_pipe { |
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struct list_head pipe; |
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struct list_head in_upcall; |
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struct list_head in_downcall; |
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int pipelen; |
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int nreaders; |
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int nwriters; |
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#define RPC_PIPE_WAIT_FOR_OPEN 1 |
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int flags; |
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struct delayed_work queue_timeout; |
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const struct rpc_pipe_ops *ops; |
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spinlock_t lock; |
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struct dentry *dentry; |
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}; |
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struct rpc_inode { |
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struct inode vfs_inode; |
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void *private; |
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struct rpc_pipe *pipe; |
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wait_queue_head_t waitq; |
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}; |
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static inline struct rpc_inode * |
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RPC_I(struct inode *inode) |
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{ |
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return container_of(inode, struct rpc_inode, vfs_inode); |
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} |
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enum { |
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SUNRPC_PIPEFS_NFS_PRIO, |
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SUNRPC_PIPEFS_RPC_PRIO, |
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}; |
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extern int rpc_pipefs_notifier_register(struct notifier_block *); |
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extern void rpc_pipefs_notifier_unregister(struct notifier_block *); |
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enum { |
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RPC_PIPEFS_MOUNT, |
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RPC_PIPEFS_UMOUNT, |
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}; |
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extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb, |
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const unsigned char *dir_name); |
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extern int rpc_pipefs_init_net(struct net *net); |
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extern void rpc_pipefs_exit_net(struct net *net); |
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extern struct super_block *rpc_get_sb_net(const struct net *net); |
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extern void rpc_put_sb_net(const struct net *net); |
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extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *, |
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char __user *, size_t); |
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extern int rpc_queue_upcall(struct rpc_pipe *, struct rpc_pipe_msg *); |
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struct rpc_clnt; |
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extern struct dentry *rpc_create_client_dir(struct dentry *, const char *, struct rpc_clnt *); |
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extern int rpc_remove_client_dir(struct rpc_clnt *); |
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extern void rpc_init_pipe_dir_head(struct rpc_pipe_dir_head *pdh); |
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extern void rpc_init_pipe_dir_object(struct rpc_pipe_dir_object *pdo, |
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const struct rpc_pipe_dir_object_ops *pdo_ops, |
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void *pdo_data); |
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extern int rpc_add_pipe_dir_object(struct net *net, |
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struct rpc_pipe_dir_head *pdh, |
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struct rpc_pipe_dir_object *pdo); |
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extern void rpc_remove_pipe_dir_object(struct net *net, |
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struct rpc_pipe_dir_head *pdh, |
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struct rpc_pipe_dir_object *pdo); |
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extern struct rpc_pipe_dir_object *rpc_find_or_alloc_pipe_dir_object( |
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struct net *net, |
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struct rpc_pipe_dir_head *pdh, |
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int (*match)(struct rpc_pipe_dir_object *, void *), |
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struct rpc_pipe_dir_object *(*alloc)(void *), |
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void *data); |
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struct cache_detail; |
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extern struct dentry *rpc_create_cache_dir(struct dentry *, |
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const char *, |
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umode_t umode, |
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struct cache_detail *); |
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extern void rpc_remove_cache_dir(struct dentry *); |
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struct rpc_pipe *rpc_mkpipe_data(const struct rpc_pipe_ops *ops, int flags); |
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void rpc_destroy_pipe_data(struct rpc_pipe *pipe); |
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extern struct dentry *rpc_mkpipe_dentry(struct dentry *, const char *, void *, |
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struct rpc_pipe *); |
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extern int rpc_unlink(struct dentry *); |
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extern int register_rpc_pipefs(void); |
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extern void unregister_rpc_pipefs(void); |
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extern bool gssd_running(struct net *net); |
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#endif
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