/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
 */

#ifndef __KSMBD_MISC_H__
#define __KSMBD_MISC_H__

#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
#endif
struct ksmbd_share_config;
struct nls_table;
struct kstat;
struct ksmbd_file;

int match_pattern(const char *str, size_t len, const char *pattern);
int ksmbd_validate_filename(char *filename);
int parse_stream_name(char *filename, char **stream_name, int *s_type);
char *convert_to_nt_pathname(struct ksmbd_share_config *share,
			     const struct path *path);
int get_nlink(struct kstat *st);
void ksmbd_conv_path_to_unix(char *path);
void ksmbd_strip_last_slash(char *path);
void ksmbd_conv_path_to_windows(char *path);
char *ksmbd_casefold_sharename(struct unicode_map *um, const char *name);
char *ksmbd_extract_sharename(struct unicode_map *um, const char *treename);

#define KSMBD_DIR_INFO_ALIGNMENT	8
struct ksmbd_dir_info;
char *ksmbd_convert_dir_info_name(struct ksmbd_dir_info *d_info,
				  const struct nls_table *local_nls,
				  int *conv_len);

#define NTFS_TIME_OFFSET	((u64)(369 * 365 + 89) * 24 * 3600 * 10000000)
struct timespec64 ksmbd_NTtimeToUnix(__le64 ntutc);
u64 ksmbd_UnixTimeToNT(struct timespec64 t);
long long ksmbd_systime(void);

#ifdef CONFIG_PROC_FS
struct ksmbd_const_name {
	unsigned int const_value;
	const char *name;
};

int ksmbd_proc_init(void);
void ksmbd_proc_cleanup(void);
void ksmbd_proc_reset(void);
struct proc_dir_entry *ksmbd_proc_create(const char *name,
					 int (*show)(struct seq_file *m, void *v),
			     void *v);
void ksmbd_proc_show_flag_names(struct seq_file *m,
				const struct ksmbd_const_name *table,
				int count,
				unsigned int flags);
const char *ksmbd_proc_const_name(const struct ksmbd_const_name *table,
				  int count, unsigned int const_value);
#else
static inline int ksmbd_proc_init(void) { return 0; }
static inline void ksmbd_proc_cleanup(void) {}
static inline void ksmbd_proc_reset(void) {}
#endif
#endif /* __KSMBD_MISC_H__ */