162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * fs/hmdfs/hmdfs_share.h 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#ifndef HMDFS_SHARE_H 962306a36Sopenharmony_ci#define HMDFS_SHARE_H 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include <linux/file.h> 1262306a36Sopenharmony_ci#include <linux/slab.h> 1362306a36Sopenharmony_ci#include <linux/namei.h> 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci#include "hmdfs_device_view.h" 1662306a36Sopenharmony_ci#include "comm/connection.h" 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci#define HMDFS_SHARE_ITEM_TIMEOUT_S 120 1962306a36Sopenharmony_ci#define HMDFS_SHARE_ITEMS_MAX 128 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ci#define SHARE_RESERVED_DIR ".share" 2262306a36Sopenharmony_ci#define SHARE_ALL_DEVICE "0" 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_cistruct hmdfs_share_control { 2562306a36Sopenharmony_ci __u32 src_fd; 2662306a36Sopenharmony_ci char cid[HMDFS_CID_SIZE]; 2762306a36Sopenharmony_ci}; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_cistruct hmdfs_share_item { 3062306a36Sopenharmony_ci struct file *file; 3162306a36Sopenharmony_ci struct qstr relative_path; 3262306a36Sopenharmony_ci char cid[HMDFS_CID_SIZE]; 3362306a36Sopenharmony_ci bool opened; 3462306a36Sopenharmony_ci bool timeout; 3562306a36Sopenharmony_ci struct list_head list; 3662306a36Sopenharmony_ci struct delayed_work d_work; 3762306a36Sopenharmony_ci struct hmdfs_share_table *hst; 3862306a36Sopenharmony_ci}; 3962306a36Sopenharmony_ci 4062306a36Sopenharmony_cibool hmdfs_is_share_file(struct file *file); 4162306a36Sopenharmony_cistruct hmdfs_share_item *hmdfs_lookup_share_item(struct hmdfs_share_table *st, 4262306a36Sopenharmony_ci struct qstr *cur_relative_path); 4362306a36Sopenharmony_ciint insert_share_item(struct hmdfs_share_table *st, struct qstr *relative_path, 4462306a36Sopenharmony_ci struct file *file, char *cid); 4562306a36Sopenharmony_civoid update_share_item(struct hmdfs_share_item *item, struct file *file, 4662306a36Sopenharmony_ci char *cid); 4762306a36Sopenharmony_cibool in_share_dir(struct dentry *child_dentry); 4862306a36Sopenharmony_ciinline bool is_share_dir(struct inode *inode, const char *name); 4962306a36Sopenharmony_ciint get_path_from_share_table(struct hmdfs_sb_info *sbi, 5062306a36Sopenharmony_ci struct dentry *cur_dentry, struct path *src_path); 5162306a36Sopenharmony_ci 5262306a36Sopenharmony_civoid hmdfs_clear_share_item_offline(struct hmdfs_peer *conn); 5362306a36Sopenharmony_civoid reset_item_opened_status(struct hmdfs_sb_info *sbi, const char *filename); 5462306a36Sopenharmony_civoid hmdfs_close_share_item(struct hmdfs_sb_info *sbi, struct file *file, 5562306a36Sopenharmony_ci char *cid); 5662306a36Sopenharmony_ciint hmdfs_check_share_access_permission(struct hmdfs_sb_info *sbi, 5762306a36Sopenharmony_ci const char *filename, char *cid); 5862306a36Sopenharmony_ci 5962306a36Sopenharmony_ciint hmdfs_init_share_table(struct hmdfs_sb_info *sbi); 6062306a36Sopenharmony_civoid hmdfs_clear_share_table(struct hmdfs_sb_info *sbi); 6162306a36Sopenharmony_ciint hmdfs_clear_first_item(struct hmdfs_share_table *st); 6262306a36Sopenharmony_ci 6362306a36Sopenharmony_ci#endif // HMDFS_SHARE_H 64