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smb_common.h
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2018 Samsung Electronics Co., Ltd.
*/
#ifndef __SMB_COMMON_H__
#define __SMB_COMMON_H__
#include <linux/kernel.h>
#include "smb1pdu.h"
#include "smb2pdu.h"
#define SMB1_PROT 0
#define SMB2_PROT 1
#define SMB21_PROT 2
/* multi-protocol negotiate request */
#define SMB2X_PROT 3
#define SMB30_PROT 4
#define SMB302_PROT 5
#define SMB311_PROT 6
#define BAD_PROT 0xFFFF
#define SMB1_VERSION_STRING "1.0"
#define SMB20_VERSION_STRING "2.0"
#define SMB21_VERSION_STRING "2.1"
#define SMB30_VERSION_STRING "3.0"
#define SMB302_VERSION_STRING "3.02"
#define SMB311_VERSION_STRING "3.1.1"
/* Dialects */
#define SMB10_PROT_ID 0x00
#define SMB20_PROT_ID 0x0202
#define SMB21_PROT_ID 0x0210
/* multi-protocol negotiate request */
#define SMB2X_PROT_ID 0x02FF
#define SMB30_PROT_ID 0x0300
#define SMB302_PROT_ID 0x0302
#define SMB311_PROT_ID 0x0311
#define BAD_PROT_ID 0xFFFF
extern struct list_head global_lock_list;
struct cifsd_work;
struct cifsd_tcp_conn;
struct cifsd_dir_info;
struct cifsd_file;
struct dir_context;
#define IS_SMB2(x) ((x)->vals->protocol_id != SMB10_PROT_ID)
#define HEADER_SIZE(conn) ((conn)->vals->header_size)
#define HEADER_SIZE_NO_BUF_LEN(conn) ((conn)->vals->header_size - 4)
#define MAX_HEADER_SIZE(conn) ((conn)->vals->max_header_size)
struct smb_version_values {
char *version_string;
__u16 protocol_id;
__le16 lock_cmd;
__u32 req_capabilities;
__u32 large_lock_type;
__u32 exclusive_lock_type;
__u32 shared_lock_type;
__u32 unlock_lock_type;
size_t header_size;
size_t max_header_size;
size_t read_rsp_size;
unsigned int cap_unix;
unsigned int cap_nt_find;
unsigned int cap_large_files;
__u16 signing_enabled;
__u16 signing_required;
size_t create_lease_size;
size_t create_durable_size;
size_t create_durable_v2_size;
size_t create_mxac_size;
size_t create_disk_id_size;
};
struct smb_version_ops {
int (*get_cmd_val)(struct cifsd_work *swork);
int (*init_rsp_hdr)(struct cifsd_work *swork);
void (*set_rsp_status)(struct cifsd_work *swork, unsigned int err);
int (*allocate_rsp_buf)(struct cifsd_work *work);
void (*set_rsp_credits)(struct cifsd_work *swork);
int (*check_user_session)(struct cifsd_work *work);
int (*get_cifsd_tcon)(struct cifsd_work *work);
int (*is_sign_req)(struct cifsd_work *work, unsigned int command);
int (*check_sign_req)(struct cifsd_work *work);
void (*set_sign_rsp)(struct cifsd_work *work);
int (*generate_signingkey)(struct cifsd_session *sess, bool binding,
char *hash_value);
int (*generate_encryptionkey)(struct cifsd_session *sess);
int (*is_transform_hdr)(void *buf);
int (*decrypt_req)(struct cifsd_work *work);
int (*encrypt_resp)(struct cifsd_work *work);
};
struct smb_version_cmds {
int (*proc)(struct cifsd_work *swork);
};
int cifsd_min_protocol(void);
int cifsd_max_protocol(void);
int cifsd_lookup_protocol_idx(char *str);
int cifsd_verify_smb_message(struct cifsd_work *work);
bool cifsd_smb_request(struct cifsd_tcp_conn *conn);
int cifsd_lookup_dialect_by_id(__le16 *cli_dialects, __le16 dialects_count);
int cifsd_negotiate_smb_dialect(void *buf);
int cifsd_init_smb_server(struct cifsd_work *work);
bool cifsd_pdu_size_has_room(unsigned int pdu);
struct cifsd_kstat;
int cifsd_populate_dot_dotdot_entries(struct cifsd_tcp_conn *conn,
int info_level,
struct cifsd_file *dir,
struct cifsd_dir_info *d_info,
char *search_pattern,
int (*fn)(struct cifsd_tcp_conn *,
int,
struct cifsd_dir_info *,
struct cifsd_kstat *));
int cifsd_extract_shortname(struct cifsd_tcp_conn *conn,
char *longname,
char *shortname);
int cifsd_fill_dirent(struct dir_context *ctx,
const char *name,
int namlen,
loff_t offset,
u64 ino,
unsigned int d_type);
void cifsd_init_smb2_server_common(struct cifsd_tcp_conn *conn);
int cifsd_smb_negotiate_common(struct cifsd_work *work, unsigned int command);
int cifsd_smb_check_shared_mode(struct file *filp, struct cifsd_file *curr_fp);
unsigned int cifsd_max_msg_size(void);
unsigned int cifsd_default_io_size(void);
unsigned int cifsd_small_buffer_size(void);
unsigned int cifsd_server_side_copy_max_chunk_count(void);
unsigned int cifsd_server_side_copy_max_chunk_size(void);
unsigned int cifsd_server_side_copy_max_total_size(void);
bool is_asterisk(char *p);
#endif /* __SMB_COMMON_H__ */