linux/fs/smb/server/vfs_cache.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *   Copyright (C) 2019 Samsung Electronics Co., Ltd.
 */

#ifndef __VFS_CACHE_H__
#define __VFS_CACHE_H__

#include <linux/file.h>
#include <linux/fs.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
#include <linux/idr.h>
#include <linux/workqueue.h>

#include "vfs.h"
#include "mgmt/share_config.h"

/* Windows style file permissions for extended response */
#define FILE_GENERIC_ALL …
#define FILE_GENERIC_READ …
#define FILE_GENERIC_WRITE …
#define FILE_GENERIC_EXECUTE …

#define KSMBD_START_FID …
#define KSMBD_NO_FID …
#define SMB2_NO_FID …

struct ksmbd_conn;
struct ksmbd_session;

struct ksmbd_lock { … };

struct stream { … };

struct ksmbd_inode { … };

enum { … };

struct ksmbd_file { … };

static inline void set_ctx_actor(struct dir_context *ctx,
				 filldir_t actor)
{ … }

#define KSMBD_NR_OPEN_DEFAULT …

struct ksmbd_file_table { … };

static inline bool has_file_id(u64 id)
{ … }

static inline bool ksmbd_stream_fd(struct ksmbd_file *fp)
{ … }

int ksmbd_init_file_table(struct ksmbd_file_table *ft);
void ksmbd_destroy_file_table(struct ksmbd_file_table *ft);
int ksmbd_close_fd(struct ksmbd_work *work, u64 id);
struct ksmbd_file *ksmbd_lookup_fd_fast(struct ksmbd_work *work, u64 id);
struct ksmbd_file *ksmbd_lookup_foreign_fd(struct ksmbd_work *work, u64 id);
struct ksmbd_file *ksmbd_lookup_fd_slow(struct ksmbd_work *work, u64 id,
					u64 pid);
void ksmbd_fd_put(struct ksmbd_work *work, struct ksmbd_file *fp);
struct ksmbd_inode *ksmbd_inode_lookup_lock(struct dentry *d);
void ksmbd_inode_put(struct ksmbd_inode *ci);
struct ksmbd_file *ksmbd_lookup_global_fd(unsigned long long id);
struct ksmbd_file *ksmbd_lookup_durable_fd(unsigned long long id);
void ksmbd_put_durable_fd(struct ksmbd_file *fp);
struct ksmbd_file *ksmbd_lookup_fd_cguid(char *cguid);
struct ksmbd_file *ksmbd_lookup_fd_inode(struct dentry *dentry);
unsigned int ksmbd_open_durable_fd(struct ksmbd_file *fp);
struct ksmbd_file *ksmbd_open_fd(struct ksmbd_work *work, struct file *filp);
void ksmbd_launch_ksmbd_durable_scavenger(void);
void ksmbd_stop_durable_scavenger(void);
void ksmbd_close_tree_conn_fds(struct ksmbd_work *work);
void ksmbd_close_session_fds(struct ksmbd_work *work);
int ksmbd_close_inode_fds(struct ksmbd_work *work, struct inode *inode);
int ksmbd_init_global_file_table(void);
void ksmbd_free_global_file_table(void);
void ksmbd_set_fd_limit(unsigned long limit);
void ksmbd_update_fstate(struct ksmbd_file_table *ft, struct ksmbd_file *fp,
			 unsigned int state);

/*
 * INODE hash
 */
int __init ksmbd_inode_hash_init(void);
void ksmbd_release_inode_hash(void);

enum KSMBD_INODE_STATUS { … };

int ksmbd_query_inode_status(struct dentry *dentry);
bool ksmbd_inode_pending_delete(struct ksmbd_file *fp);
void ksmbd_set_inode_pending_delete(struct ksmbd_file *fp);
void ksmbd_clear_inode_pending_delete(struct ksmbd_file *fp);
void ksmbd_fd_set_delete_on_close(struct ksmbd_file *fp,
				  int file_info);
int ksmbd_reopen_durable_fd(struct ksmbd_work *work, struct ksmbd_file *fp);
int ksmbd_validate_name_reconnect(struct ksmbd_share_config *share,
				  struct ksmbd_file *fp, char *name);
int ksmbd_init_file_cache(void);
void ksmbd_exit_file_cache(void);
#endif /* __VFS_CACHE_H__ */