mirror of https://github.com/torvalds/linux.git
228 lines
6.4 KiB
C
228 lines
6.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2018 Samsung Electronics Co., Ltd.
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*/
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#ifndef __SMB_COMMON_H__
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#define __SMB_COMMON_H__
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#include <linux/kernel.h>
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#include "glob.h"
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#include "nterr.h"
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#include "../common/smbglob.h"
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#include "../common/smb2pdu.h"
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#include "../common/fscc.h"
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#include "smb2pdu.h"
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/* ksmbd's Specific ERRNO */
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#define ESHARE 50000
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#define SMB1_PROT 0
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#define SMB2_PROT 1
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#define SMB21_PROT 2
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/* multi-protocol negotiate request */
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#define SMB2X_PROT 3
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#define SMB30_PROT 4
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#define SMB302_PROT 5
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#define SMB311_PROT 6
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#define BAD_PROT 0xFFFF
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#define SMB_ECHO_INTERVAL (60 * HZ)
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#define MAX_STREAM_PROT_LEN 0x00FFFFFF
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/* Responses when opening a file. */
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#define F_SUPERSEDED 0
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#define F_OPENED 1
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#define F_CREATED 2
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#define F_OVERWRITTEN 3
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/*
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* File Attribute flags
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*/
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#define ATTR_POSIX_SEMANTICS 0x01000000
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#define ATTR_BACKUP_SEMANTICS 0x02000000
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#define ATTR_DELETE_ON_CLOSE 0x04000000
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#define ATTR_SEQUENTIAL_SCAN 0x08000000
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#define ATTR_RANDOM_ACCESS 0x10000000
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#define ATTR_NO_BUFFERING 0x20000000
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#define ATTR_WRITE_THROUGH 0x80000000
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/* Combinations of file access permission bits */
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#define SET_FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA \
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| FILE_READ_ATTRIBUTES \
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| DELETE | READ_CONTROL | WRITE_DAC \
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| WRITE_OWNER | SYNCHRONIZE)
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#define SET_FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
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| FILE_WRITE_EA \
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| FILE_DELETE_CHILD \
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| FILE_WRITE_ATTRIBUTES \
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| DELETE | READ_CONTROL | WRITE_DAC \
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| WRITE_OWNER | SYNCHRONIZE)
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/* generic flags for file open */
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#define GENERIC_READ_FLAGS (READ_CONTROL | FILE_READ_DATA | \
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FILE_READ_ATTRIBUTES | \
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FILE_READ_EA | SYNCHRONIZE)
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#define GENERIC_WRITE_FLAGS (READ_CONTROL | FILE_WRITE_DATA | \
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FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | \
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FILE_APPEND_DATA | SYNCHRONIZE)
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#define GENERIC_EXECUTE_FLAGS (READ_CONTROL | FILE_EXECUTE | \
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FILE_READ_ATTRIBUTES | SYNCHRONIZE)
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#define GENERIC_ALL_FLAGS (DELETE | READ_CONTROL | WRITE_DAC | \
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WRITE_OWNER | SYNCHRONIZE | FILE_READ_DATA | \
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FILE_WRITE_DATA | FILE_APPEND_DATA | \
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FILE_READ_EA | FILE_WRITE_EA | \
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FILE_EXECUTE | FILE_DELETE_CHILD | \
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FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES)
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#define SMB_COM_NEGOTIATE 0x72
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#define SMB1_CLIENT_GUID_SIZE (16)
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#define SMBFLG_RESPONSE 0x80 /* this PDU is a response from server */
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#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
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#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
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#define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)
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#define SMBFLG2_UNICODE cpu_to_le16(0x8000)
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/* See MS-CIFS 2.2.4.52.2 */
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struct smb_negotiate_rsp {
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struct smb_hdr hdr; /* wct = 17 */
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__le16 DialectIndex; /* 0xFFFF = no dialect acceptable */
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__le16 ByteCount;
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} __packed;
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struct filesystem_attribute_info {
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__le32 Attributes;
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__le32 MaxPathNameComponentLength;
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__le32 FileSystemNameLen;
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__le16 FileSystemName[]; /* do not have to save this - get subset? */
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} __packed;
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struct filesystem_vol_info {
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__le64 VolumeCreationTime;
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__le32 SerialNumber;
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__le32 VolumeLabelSize;
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__le16 Reserved;
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__le16 VolumeLabel[];
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} __packed;
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struct filesystem_info {
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__le64 TotalAllocationUnits;
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__le64 FreeAllocationUnits;
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__le32 SectorsPerAllocationUnit;
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__le32 BytesPerSector;
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} __packed; /* size info, level 0x103 */
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#define EXTENDED_INFO_MAGIC 0x43667364 /* Cfsd */
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#define STRING_LENGTH 28
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struct fs_extended_info {
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__le32 magic;
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__le32 version;
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__le32 release;
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__u64 rel_date;
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char version_string[STRING_LENGTH];
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} __packed;
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struct object_id_info {
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char objid[16];
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struct fs_extended_info extended_info;
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} __packed;
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struct file_names_info {
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__le32 NextEntryOffset;
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__u32 FileIndex;
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__le32 FileNameLength;
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char FileName[];
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} __packed; /* level 0xc FF resp data */
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struct file_id_both_directory_info {
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__le32 NextEntryOffset;
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__u32 FileIndex;
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__le64 CreationTime;
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__le64 LastAccessTime;
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__le64 LastWriteTime;
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__le64 ChangeTime;
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__le64 EndOfFile;
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__le64 AllocationSize;
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__le32 ExtFileAttributes;
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__le32 FileNameLength;
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__le32 EaSize; /* length of the xattrs */
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__u8 ShortNameLength;
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__u8 Reserved;
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__u8 ShortName[24];
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__le16 Reserved2;
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__le64 UniqueId;
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char FileName[];
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} __packed;
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struct smb_version_ops {
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u16 (*get_cmd_val)(struct ksmbd_work *swork);
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int (*init_rsp_hdr)(struct ksmbd_work *swork);
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void (*set_rsp_status)(struct ksmbd_work *swork, __le32 err);
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int (*allocate_rsp_buf)(struct ksmbd_work *work);
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int (*set_rsp_credits)(struct ksmbd_work *work);
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int (*check_user_session)(struct ksmbd_work *work);
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int (*get_ksmbd_tcon)(struct ksmbd_work *work);
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bool (*is_sign_req)(struct ksmbd_work *work, unsigned int command);
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int (*check_sign_req)(struct ksmbd_work *work);
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void (*set_sign_rsp)(struct ksmbd_work *work);
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int (*generate_signingkey)(struct ksmbd_session *sess, struct ksmbd_conn *conn);
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void (*generate_encryptionkey)(struct ksmbd_conn *conn, struct ksmbd_session *sess);
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bool (*is_transform_hdr)(void *buf);
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int (*decrypt_req)(struct ksmbd_work *work);
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int (*encrypt_resp)(struct ksmbd_work *work);
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};
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struct smb_version_cmds {
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int (*proc)(struct ksmbd_work *swork);
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};
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int ksmbd_min_protocol(void);
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int ksmbd_max_protocol(void);
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int ksmbd_lookup_protocol_idx(char *str);
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int ksmbd_verify_smb_message(struct ksmbd_work *work);
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bool ksmbd_smb_request(struct ksmbd_conn *conn);
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int ksmbd_lookup_dialect_by_id(__le16 *cli_dialects, __le16 dialects_count);
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int ksmbd_init_smb_server(struct ksmbd_conn *conn);
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struct ksmbd_kstat;
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int ksmbd_populate_dot_dotdot_entries(struct ksmbd_work *work,
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int info_level,
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struct ksmbd_file *dir,
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struct ksmbd_dir_info *d_info,
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char *search_pattern,
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int (*fn)(struct ksmbd_conn *,
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int,
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struct ksmbd_dir_info *,
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struct ksmbd_kstat *));
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int ksmbd_extract_shortname(struct ksmbd_conn *conn,
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const char *longname,
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char *shortname);
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int ksmbd_smb_negotiate_common(struct ksmbd_work *work, unsigned int command);
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int ksmbd_smb_check_shared_mode(struct file *filp, struct ksmbd_file *curr_fp);
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int __ksmbd_override_fsids(struct ksmbd_work *work,
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struct ksmbd_share_config *share);
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int ksmbd_override_fsids(struct ksmbd_work *work);
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void ksmbd_revert_fsids(struct ksmbd_work *work);
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unsigned int ksmbd_server_side_copy_max_chunk_count(void);
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unsigned int ksmbd_server_side_copy_max_chunk_size(void);
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unsigned int ksmbd_server_side_copy_max_total_size(void);
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bool is_asterisk(char *p);
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__le32 smb_map_generic_desired_access(__le32 daccess);
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#endif /* __SMB_COMMON_H__ */
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