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542 lines
16 KiB
542 lines
16 KiB
/* 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 "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 SMB1_VERSION_STRING "1.0" |
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#define SMB20_VERSION_STRING "2.0" |
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#define SMB21_VERSION_STRING "2.1" |
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#define SMB30_VERSION_STRING "3.0" |
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#define SMB302_VERSION_STRING "3.02" |
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#define SMB311_VERSION_STRING "3.1.1" |
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/* Dialects */ |
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#define SMB10_PROT_ID 0x00 |
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#define SMB20_PROT_ID 0x0202 |
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#define SMB21_PROT_ID 0x0210 |
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/* multi-protocol negotiate request */ |
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#define SMB2X_PROT_ID 0x02FF |
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#define SMB30_PROT_ID 0x0300 |
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#define SMB302_PROT_ID 0x0302 |
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#define SMB311_PROT_ID 0x0311 |
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#define BAD_PROT_ID 0xFFFF |
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#define SMB_ECHO_INTERVAL (60 * HZ) |
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#define CIFS_DEFAULT_IOSIZE (64 * 1024) |
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#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */ |
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/* RFC 1002 session packet types */ |
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#define RFC1002_SESSION_MESSAGE 0x00 |
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#define RFC1002_SESSION_REQUEST 0x81 |
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#define RFC1002_POSITIVE_SESSION_RESPONSE 0x82 |
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#define RFC1002_NEGATIVE_SESSION_RESPONSE 0x83 |
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#define RFC1002_RETARGET_SESSION_RESPONSE 0x84 |
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#define RFC1002_SESSION_KEEP_ALIVE 0x85 |
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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_READONLY 0x0001 |
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#define ATTR_HIDDEN 0x0002 |
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#define ATTR_SYSTEM 0x0004 |
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#define ATTR_VOLUME 0x0008 |
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#define ATTR_DIRECTORY 0x0010 |
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#define ATTR_ARCHIVE 0x0020 |
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#define ATTR_DEVICE 0x0040 |
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#define ATTR_NORMAL 0x0080 |
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#define ATTR_TEMPORARY 0x0100 |
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#define ATTR_SPARSE 0x0200 |
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#define ATTR_REPARSE 0x0400 |
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#define ATTR_COMPRESSED 0x0800 |
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#define ATTR_OFFLINE 0x1000 |
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#define ATTR_NOT_CONTENT_INDEXED 0x2000 |
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#define ATTR_ENCRYPTED 0x4000 |
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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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#define ATTR_READONLY_LE cpu_to_le32(ATTR_READONLY) |
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#define ATTR_HIDDEN_LE cpu_to_le32(ATTR_HIDDEN) |
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#define ATTR_SYSTEM_LE cpu_to_le32(ATTR_SYSTEM) |
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#define ATTR_DIRECTORY_LE cpu_to_le32(ATTR_DIRECTORY) |
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#define ATTR_ARCHIVE_LE cpu_to_le32(ATTR_ARCHIVE) |
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#define ATTR_NORMAL_LE cpu_to_le32(ATTR_NORMAL) |
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#define ATTR_TEMPORARY_LE cpu_to_le32(ATTR_TEMPORARY) |
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#define ATTR_SPARSE_FILE_LE cpu_to_le32(ATTR_SPARSE) |
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#define ATTR_REPARSE_POINT_LE cpu_to_le32(ATTR_REPARSE) |
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#define ATTR_COMPRESSED_LE cpu_to_le32(ATTR_COMPRESSED) |
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#define ATTR_OFFLINE_LE cpu_to_le32(ATTR_OFFLINE) |
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#define ATTR_NOT_CONTENT_INDEXED_LE cpu_to_le32(ATTR_NOT_CONTENT_INDEXED) |
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#define ATTR_ENCRYPTED_LE cpu_to_le32(ATTR_ENCRYPTED) |
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#define ATTR_INTEGRITY_STREAML_LE cpu_to_le32(0x00008000) |
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#define ATTR_NO_SCRUB_DATA_LE cpu_to_le32(0x00020000) |
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#define ATTR_MASK_LE cpu_to_le32(0x00007FB7) |
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/* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */ |
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#define FILE_SUPPORTS_SPARSE_VDL 0x10000000 /* faster nonsparse extend */ |
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#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */ |
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#define FILE_SUPPORT_INTEGRITY_STREAMS 0x04000000 |
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#define FILE_SUPPORTS_USN_JOURNAL 0x02000000 |
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#define FILE_SUPPORTS_OPEN_BY_FILE_ID 0x01000000 |
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#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000 |
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#define FILE_SUPPORTS_HARD_LINKS 0x00400000 |
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#define FILE_SUPPORTS_TRANSACTIONS 0x00200000 |
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#define FILE_SEQUENTIAL_WRITE_ONCE 0x00100000 |
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#define FILE_READ_ONLY_VOLUME 0x00080000 |
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#define FILE_NAMED_STREAMS 0x00040000 |
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#define FILE_SUPPORTS_ENCRYPTION 0x00020000 |
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#define FILE_SUPPORTS_OBJECT_IDS 0x00010000 |
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#define FILE_VOLUME_IS_COMPRESSED 0x00008000 |
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#define FILE_SUPPORTS_REMOTE_STORAGE 0x00000100 |
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#define FILE_SUPPORTS_REPARSE_POINTS 0x00000080 |
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#define FILE_SUPPORTS_SPARSE_FILES 0x00000040 |
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#define FILE_VOLUME_QUOTAS 0x00000020 |
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#define FILE_FILE_COMPRESSION 0x00000010 |
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#define FILE_PERSISTENT_ACLS 0x00000008 |
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#define FILE_UNICODE_ON_DISK 0x00000004 |
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#define FILE_CASE_PRESERVED_NAMES 0x00000002 |
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#define FILE_CASE_SENSITIVE_SEARCH 0x00000001 |
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#define FILE_READ_DATA 0x00000001 /* Data can be read from the file */ |
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#define FILE_WRITE_DATA 0x00000002 /* Data can be written to the file */ |
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#define FILE_APPEND_DATA 0x00000004 /* Data can be appended to the file */ |
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#define FILE_READ_EA 0x00000008 /* Extended attributes associated */ |
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/* with the file can be read */ |
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#define FILE_WRITE_EA 0x00000010 /* Extended attributes associated */ |
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/* with the file can be written */ |
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#define FILE_EXECUTE 0x00000020 /*Data can be read into memory from */ |
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/* the file using system paging I/O */ |
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#define FILE_DELETE_CHILD 0x00000040 |
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#define FILE_READ_ATTRIBUTES 0x00000080 /* Attributes associated with the */ |
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/* file can be read */ |
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#define FILE_WRITE_ATTRIBUTES 0x00000100 /* Attributes associated with the */ |
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/* file can be written */ |
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#define DELETE 0x00010000 /* The file can be deleted */ |
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#define READ_CONTROL 0x00020000 /* The access control list and */ |
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/* ownership associated with the */ |
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/* file can be read */ |
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#define WRITE_DAC 0x00040000 /* The access control list and */ |
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/* ownership associated with the */ |
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/* file can be written. */ |
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#define WRITE_OWNER 0x00080000 /* Ownership information associated */ |
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/* with the file can be written */ |
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#define SYNCHRONIZE 0x00100000 /* The file handle can waited on to */ |
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/* synchronize with the completion */ |
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/* of an input/output request */ |
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#define GENERIC_ALL 0x10000000 |
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#define GENERIC_EXECUTE 0x20000000 |
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#define GENERIC_WRITE 0x40000000 |
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#define GENERIC_READ 0x80000000 |
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/* In summary - Relevant file */ |
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/* access flags from CIFS are */ |
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/* file_read_data, file_write_data */ |
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/* file_execute, file_read_attributes*/ |
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/* write_dac, and delete. */ |
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#define FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA | FILE_READ_ATTRIBUTES) |
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#define FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \ |
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| FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES) |
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#define FILE_EXEC_RIGHTS (FILE_EXECUTE) |
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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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#define SET_FILE_EXEC_RIGHTS (FILE_READ_EA | FILE_WRITE_EA | FILE_EXECUTE \ |
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| FILE_READ_ATTRIBUTES \ |
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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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#define SET_MINIMUM_RIGHTS (FILE_READ_EA | FILE_READ_ATTRIBUTES \ |
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| READ_CONTROL | 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 SMB1_PROTO_NUMBER cpu_to_le32(0x424d53ff) |
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#define SMB_COM_NEGOTIATE 0x72 |
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#define SMB1_CLIENT_GUID_SIZE (16) |
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struct smb_hdr { |
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__be32 smb_buf_length; |
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__u8 Protocol[4]; |
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__u8 Command; |
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union { |
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struct { |
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__u8 ErrorClass; |
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__u8 Reserved; |
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__le16 Error; |
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} __packed DosError; |
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__le32 CifsError; |
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} __packed Status; |
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__u8 Flags; |
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__le16 Flags2; /* note: le */ |
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__le16 PidHigh; |
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union { |
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struct { |
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__le32 SequenceNumber; /* le */ |
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__u32 Reserved; /* zero */ |
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} __packed Sequence; |
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__u8 SecuritySignature[8]; /* le */ |
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} __packed Signature; |
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__u8 pad[2]; |
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__le16 Tid; |
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__le16 Pid; |
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__le16 Uid; |
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__le16 Mid; |
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__u8 WordCount; |
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} __packed; |
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struct smb_negotiate_req { |
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struct smb_hdr hdr; /* wct = 0 */ |
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__le16 ByteCount; |
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unsigned char DialectsArray[1]; |
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} __packed; |
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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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__u8 SecurityMode; |
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__le16 MaxMpxCount; |
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__le16 MaxNumberVcs; |
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__le32 MaxBufferSize; |
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__le32 MaxRawSize; |
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__le32 SessionKey; |
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__le32 Capabilities; /* see below */ |
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__le32 SystemTimeLow; |
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__le32 SystemTimeHigh; |
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__le16 ServerTimeZone; |
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__u8 EncryptionKeyLength; |
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__le16 ByteCount; |
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union { |
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unsigned char EncryptionKey[8]; /* cap extended security off */ |
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/* followed by Domain name - if extended security is off */ |
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/* followed by 16 bytes of server GUID */ |
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/* then security blob if cap_extended_security negotiated */ |
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struct { |
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unsigned char GUID[SMB1_CLIENT_GUID_SIZE]; |
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unsigned char SecurityBlob[1]; |
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} __packed extended_response; |
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} __packed u; |
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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[1]; /* do not have to save this - get subset? */ |
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} __packed; |
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struct filesystem_device_info { |
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__le32 DeviceType; |
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__le32 DeviceCharacteristics; |
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} __packed; /* device info level 0x104 */ |
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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[1]; |
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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_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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char FileName[1]; |
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} __packed; /* level 0x101 FF resp data */ |
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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[1]; |
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} __packed; /* level 0xc FF resp data */ |
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struct file_full_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; |
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char FileName[1]; |
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} __packed; /* level 0x102 FF resp */ |
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struct file_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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char FileName[1]; |
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} __packed; /* level 0x104 FFrsp 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[1]; |
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} __packed; |
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struct file_id_full_dir_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; /* EA size */ |
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__le32 Reserved; |
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__le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/ |
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char FileName[1]; |
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} __packed; /* level 0x105 FF rsp data */ |
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struct smb_version_values { |
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char *version_string; |
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__u16 protocol_id; |
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__le16 lock_cmd; |
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__u32 capabilities; |
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__u32 max_read_size; |
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__u32 max_write_size; |
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__u32 max_trans_size; |
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__u32 large_lock_type; |
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__u32 exclusive_lock_type; |
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__u32 shared_lock_type; |
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__u32 unlock_lock_type; |
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size_t header_size; |
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size_t max_header_size; |
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size_t read_rsp_size; |
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unsigned int cap_unix; |
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unsigned int cap_nt_find; |
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unsigned int cap_large_files; |
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__u16 signing_enabled; |
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__u16 signing_required; |
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size_t create_lease_size; |
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size_t create_durable_size; |
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size_t create_durable_v2_size; |
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size_t create_mxac_size; |
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size_t create_disk_id_size; |
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size_t create_posix_size; |
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}; |
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struct filesystem_posix_info { |
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/* For undefined recommended transfer size return -1 in that field */ |
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__le32 OptimalTransferSize; /* bsize on some os, iosize on other os */ |
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__le32 BlockSize; |
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/* The next three fields are in terms of the block size. |
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* (above). If block size is unknown, 4096 would be a |
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* reasonable block size for a server to report. |
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* Note that returning the blocks/blocksavail removes need |
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* to make a second call (to QFSInfo level 0x103 to get this info. |
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* UserBlockAvail is typically less than or equal to BlocksAvail, |
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* if no distinction is made return the same value in each |
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*/ |
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__le64 TotalBlocks; |
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__le64 BlocksAvail; /* bfree */ |
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__le64 UserBlocksAvail; /* bavail */ |
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/* For undefined Node fields or FSID return -1 */ |
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__le64 TotalFileNodes; |
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__le64 FreeFileNodes; |
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__le64 FileSysIdentifier; /* fsid */ |
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/* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */ |
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/* NB flags can come from FILE_SYSTEM_DEVICE_INFO call */ |
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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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int (*generate_encryptionkey)(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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static inline size_t |
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smb2_hdr_size_no_buflen(struct smb_version_values *vals) |
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{ |
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return vals->header_size - 4; |
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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_work *work); |
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bool ksmbd_pdu_size_has_room(unsigned int pdu); |
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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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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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static inline unsigned int get_rfc1002_len(void *buf) |
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{ |
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return be32_to_cpu(*((__be32 *)buf)) & 0xffffff; |
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} |
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|
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static inline void inc_rfc1001_len(void *buf, int count) |
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{ |
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be32_add_cpu((__be32 *)buf, count); |
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} |
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#endif /* __SMB_COMMON_H__ */
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