[PATCH v3 12/22] smb: move some duplicate definitions to common/cifspdu.h

chenxiaosong.chenxiaosong
2025-10-14T07:30:20Z

From: ChenXiaoSong <chenxiaosong@kylinos.cn>

In order to maintain the code more easily, move duplicate definitions to
new common header file.

Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
---
fs/smb/client/cifspdu.h | 153 +---------------------------------
fs/smb/common/cifspdu.h | 165 +++++++++++++++++++++++++++++++++++++
fs/smb/server/smb_common.h | 80 +-----------------
3 files changed, 167 insertions(+), 231 deletions(-)
create mode 100644 fs/smb/common/cifspdu.h

diff --git a/fs/smb/client/cifspdu.h b/fs/smb/client/cifspdu.h
index c86a329e5822..9f42b0469d1a 100644
--- a/fs/smb/client/cifspdu.h
+++ b/fs/smb/client/cifspdu.h
@@ -12,43 +12,10 @@
#include <net/sock.h>
#include <linux/unaligned.h>
#include "../common/smbfsctl.h"
+#include "../common/cifspdu.h"

#define CIFS_PROT 0
#define POSIX_PROT (CIFS_PROT+1)
-#define BAD_PROT 0xFFFF
-
-/* SMB command codes:
- * Note some commands have minimal (wct=0,bcc=0), or uninteresting, responses
- * (ie which include no useful data other than the SMB error code itself).
- * This can allow us to avoid response buffer allocations and copy in some cases
- */
-#define SMB_COM_CREATE_DIRECTORY 0x00 /* trivial response */
-#define SMB_COM_DELETE_DIRECTORY 0x01 /* trivial response */
-#define SMB_COM_CLOSE 0x04 /* triv req/rsp, timestamp ignored */
-#define SMB_COM_FLUSH 0x05 /* triv req/rsp */
-#define SMB_COM_DELETE 0x06 /* trivial response */
-#define SMB_COM_RENAME 0x07 /* trivial response */
-#define SMB_COM_QUERY_INFORMATION 0x08 /* aka getattr */
-#define SMB_COM_SETATTR 0x09 /* trivial response */
-#define SMB_COM_LOCKING_ANDX 0x24 /* trivial response */
-#define SMB_COM_COPY 0x29 /* trivial rsp, fail filename ignrd*/
-#define SMB_COM_ECHO 0x2B /* echo request */
-#define SMB_COM_OPEN_ANDX 0x2D /* Legacy open for old servers */
-#define SMB_COM_READ_ANDX 0x2E
-#define SMB_COM_WRITE_ANDX 0x2F
-#define SMB_COM_TRANSACTION2 0x32
-#define SMB_COM_TRANSACTION2_SECONDARY 0x33
-#define SMB_COM_FIND_CLOSE2 0x34 /* trivial response */
-#define SMB_COM_TREE_DISCONNECT 0x71 /* trivial response */
-#define SMB_COM_NEGOTIATE 0x72
-#define SMB_COM_SESSION_SETUP_ANDX 0x73
-#define SMB_COM_LOGOFF_ANDX 0x74 /* trivial response */
-#define SMB_COM_TREE_CONNECT_ANDX 0x75
-#define SMB_COM_NT_TRANSACT 0xA0
-#define SMB_COM_NT_TRANSACT_SECONDARY 0xA1
-#define SMB_COM_NT_CREATE_ANDX 0xA2
-#define SMB_COM_NT_CANCEL 0xA4 /* no response */
-#define SMB_COM_NT_RENAME 0xA5 /* trivial response */

/* Transact2 subcommand codes */
#define TRANS2_OPEN 0x00
@@ -86,7 +53,6 @@
#define NT_TRANSACT_GET_USER_QUOTA 0x07
#define NT_TRANSACT_SET_USER_QUOTA 0x08

-#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
/* future chained NTCreateXReadX bigger, but for time being NTCreateX biggest */
/* among the requests (NTCreateX response is bigger with wct of 34) */
#define MAX_CIFS_HDR_SIZE 0x58 /* 4 len + 32 hdr + (2*24 wct) + 2 bct + 2 pad */
@@ -150,36 +116,6 @@
#define SMBOPEN_OTRUNC 0x0002
#define SMBOPEN_OAPPEND 0x0001

-/*
- * SMB flag definitions
- */
-#define SMBFLG_EXTD_LOCK 0x01 /* server supports lock-read write-unlock smb */
-#define SMBFLG_RCV_POSTED 0x02 /* obsolete */
-#define SMBFLG_RSVD 0x04
-#define SMBFLG_CASELESS 0x08 /* all pathnames treated as caseless (off
- implies case sensitive file handling request) */
-#define SMBFLG_CANONICAL_PATH_FORMAT 0x10 /* obsolete */
-#define SMBFLG_OLD_OPLOCK 0x20 /* obsolete */
-#define SMBFLG_OLD_OPLOCK_NOTIFY 0x40 /* obsolete */
-#define SMBFLG_RESPONSE 0x80 /* this PDU is a response from server */
-
-/*
- * SMB flag2 definitions
- */
-#define SMBFLG2_KNOWS_LONG_NAMES cpu_to_le16(1) /* can send long (non-8.3)
- path names in response */
-#define SMBFLG2_KNOWS_EAS cpu_to_le16(2)
-#define SMBFLG2_SECURITY_SIGNATURE cpu_to_le16(4)
-#define SMBFLG2_COMPRESSED (8)
-#define SMBFLG2_SECURITY_SIGNATURE_REQUIRED (0x10)
-#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
-#define SMBFLG2_REPARSE_PATH (0x400)
-#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
-#define SMBFLG2_DFS cpu_to_le16(0x1000)
-#define SMBFLG2_PAGING_IO cpu_to_le16(0x2000)
-#define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)
-#define SMBFLG2_UNICODE cpu_to_le16(0x8000)
-
/*
* These are the file access permission bits defined in CIFS for the
* NTCreateAndX as well as the level 0x107
@@ -292,7 +228,6 @@
#define SET_MINIMUM_RIGHTS (FILE_READ_EA | FILE_READ_ATTRIBUTES \
| READ_CONTROL | SYNCHRONIZE)

-
/*
* Invalid readdir handle
*/
@@ -322,33 +257,6 @@
#define CIFS_ALIAS_TYPE_FILE 0x0001
#define CIFS_SHARE_TYPE_FILE 0x0000

-/*
- * File Attribute flags
- */
-#define ATTR_READONLY 0x0001
-#define ATTR_HIDDEN 0x0002
-#define ATTR_SYSTEM 0x0004
-#define ATTR_VOLUME 0x0008
-#define ATTR_DIRECTORY 0x0010
-#define ATTR_ARCHIVE 0x0020
-#define ATTR_DEVICE 0x0040
-#define ATTR_NORMAL 0x0080
-#define ATTR_TEMPORARY 0x0100
-#define ATTR_SPARSE 0x0200
-#define ATTR_REPARSE 0x0400
-#define ATTR_COMPRESSED 0x0800
-#define ATTR_OFFLINE 0x1000 /* ie file not immediately available -
- on offline storage */
-#define ATTR_NOT_CONTENT_INDEXED 0x2000
-#define ATTR_ENCRYPTED 0x4000
-#define ATTR_POSIX_SEMANTICS 0x01000000
-#define ATTR_BACKUP_SEMANTICS 0x02000000
-#define ATTR_DELETE_ON_CLOSE 0x04000000
-#define ATTR_SEQUENTIAL_SCAN 0x08000000
-#define ATTR_RANDOM_ACCESS 0x10000000
-#define ATTR_NO_BUFFERING 0x20000000
-#define ATTR_WRITE_THROUGH 0x80000000
-
/* ShareAccess flags */
#define FILE_NO_SHARE 0x00000000
#define FILE_SHARE_READ 0x00000001
@@ -417,38 +325,6 @@
#define GETU16(var) (*((__u16 *)var)) /* BB check for endian issues */
#define GETU32(var) (*((__u32 *)var)) /* BB check for endian issues */

-struct smb_hdr {
- __be32 smb_buf_length; /* BB length is only two (rarely three) bytes,
- with one or two byte "type" preceding it that will be
- zero - we could mask the type byte off */
- __u8 Protocol[4];
- __u8 Command;
- union {
- struct {
- __u8 ErrorClass;
- __u8 Reserved;
- __le16 Error;
- } __attribute__((packed)) DosError;
- __le32 CifsError;
- } __attribute__((packed)) Status;
- __u8 Flags;
- __le16 Flags2; /* note: le */
- __le16 PidHigh;
- union {
- struct {
- __le32 SequenceNumber; /* le */
- __u32 Reserved; /* zero */
- } __attribute__((packed)) Sequence;
- __u8 SecuritySignature[8]; /* le */
- } __attribute__((packed)) Signature;
- __u8 pad[2];
- __u16 Tid;
- __le16 Pid;
- __u16 Uid;
- __le16 Mid;
- __u8 WordCount;
-} __attribute__((packed));
-
/* given a pointer to an smb_hdr, retrieve a void pointer to the ByteCount */
static inline void *
BCC(struct smb_hdr *smb)
@@ -2231,33 +2107,6 @@ typedef struct {
/* minimum includes first three fields, and empty FS Name */
#define MIN_FS_ATTR_INFO_SIZE 12

-
-/* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
-#define FILE_SUPPORTS_SPARSE_VDL 0x10000000 /* faster nonsparse extend */
-#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */
-#define FILE_SUPPORT_INTEGRITY_STREAMS 0x04000000
-#define FILE_SUPPORTS_USN_JOURNAL 0x02000000
-#define FILE_SUPPORTS_OPEN_BY_FILE_ID 0x01000000
-#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
-#define FILE_SUPPORTS_HARD_LINKS 0x00400000
-#define FILE_SUPPORTS_TRANSACTIONS 0x00200000
-#define FILE_SEQUENTIAL_WRITE_ONCE 0x00100000
-#define FILE_READ_ONLY_VOLUME 0x00080000
-#define FILE_NAMED_STREAMS 0x00040000
-#define FILE_SUPPORTS_ENCRYPTION 0x00020000
-#define FILE_SUPPORTS_OBJECT_IDS 0x00010000
-#define FILE_VOLUME_IS_COMPRESSED 0x00008000
-#define FILE_SUPPORTS_POSIX_UNLINK_RENAME 0x00000400
-#define FILE_RETURNS_CLEANUP_RESULT_INFO 0x00000200
-#define FILE_SUPPORTS_REMOTE_STORAGE 0x00000100
-#define FILE_SUPPORTS_REPARSE_POINTS 0x00000080
-#define FILE_SUPPORTS_SPARSE_FILES 0x00000040
-#define FILE_VOLUME_QUOTAS 0x00000020
-#define FILE_FILE_COMPRESSION 0x00000010
-#define FILE_PERSISTENT_ACLS 0x00000008
-#define FILE_UNICODE_ON_DISK 0x00000004
-#define FILE_CASE_PRESERVED_NAMES 0x00000002
-#define FILE_CASE_SENSITIVE_SEARCH 0x00000001
typedef struct {
__le32 Attributes;
__le32 MaxPathNameComponentLength;
diff --git a/fs/smb/common/cifspdu.h b/fs/smb/common/cifspdu.h
new file mode 100644
index 000000000000..ca16741b5947
--- /dev/null
+++ b/fs/smb/common/cifspdu.h
@@ -0,0 +1,165 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
+/*
+ *
+ * Copyright (c) International Business Machines Corp., 2002,2009
+ * Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ */
+
+#ifndef _COMMON_CIFSPDU_H
+#define _COMMON_CIFSPDU_H
+
+#define BAD_PROT 0xFFFF
+
+/* SMB command codes:
+ * Note some commands have minimal (wct=0,bcc=0), or uninteresting, responses
+ * (ie which include no useful data other than the SMB error code itself).
+ * This can allow us to avoid response buffer allocations and copy in some cases
+ */
+#define SMB_COM_CREATE_DIRECTORY 0x00 /* trivial response */
+#define SMB_COM_DELETE_DIRECTORY 0x01 /* trivial response */
+#define SMB_COM_CLOSE 0x04 /* triv req/rsp, timestamp ignored */
+#define SMB_COM_FLUSH 0x05 /* triv req/rsp */
+#define SMB_COM_DELETE 0x06 /* trivial response */
+#define SMB_COM_RENAME 0x07 /* trivial response */
+#define SMB_COM_QUERY_INFORMATION 0x08 /* aka getattr */
+#define SMB_COM_SETATTR 0x09 /* trivial response */
+#define SMB_COM_LOCKING_ANDX 0x24 /* trivial response */
+#define SMB_COM_COPY 0x29 /* trivial rsp, fail filename ignrd*/
+#define SMB_COM_ECHO 0x2B /* echo request */
+#define SMB_COM_OPEN_ANDX 0x2D /* Legacy open for old servers */
+#define SMB_COM_READ_ANDX 0x2E
+#define SMB_COM_WRITE_ANDX 0x2F
+#define SMB_COM_TRANSACTION2 0x32
+#define SMB_COM_TRANSACTION2_SECONDARY 0x33
+#define SMB_COM_FIND_CLOSE2 0x34 /* trivial response */
+#define SMB_COM_TREE_DISCONNECT 0x71 /* trivial response */
+#define SMB_COM_NEGOTIATE 0x72
+#define SMB_COM_SESSION_SETUP_ANDX 0x73
+#define SMB_COM_LOGOFF_ANDX 0x74 /* trivial response */
+#define SMB_COM_TREE_CONNECT_ANDX 0x75
+#define SMB_COM_NT_TRANSACT 0xA0
+#define SMB_COM_NT_TRANSACT_SECONDARY 0xA1
+#define SMB_COM_NT_CREATE_ANDX 0xA2
+#define SMB_COM_NT_CANCEL 0xA4 /* no response */
+#define SMB_COM_NT_RENAME 0xA5 /* trivial response */
+
+#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
+
+/*
+ * SMB flag definitions
+ */
+#define SMBFLG_EXTD_LOCK 0x01 /* server supports lock-read write-unlock smb */
+#define SMBFLG_RCV_POSTED 0x02 /* obsolete */
+#define SMBFLG_RSVD 0x04
+#define SMBFLG_CASELESS 0x08 /* all pathnames treated as caseless (off
+ implies case sensitive file handling request) */
+#define SMBFLG_CANONICAL_PATH_FORMAT 0x10 /* obsolete */
+#define SMBFLG_OLD_OPLOCK 0x20 /* obsolete */
+#define SMBFLG_OLD_OPLOCK_NOTIFY 0x40 /* obsolete */
+#define SMBFLG_RESPONSE 0x80 /* this PDU is a response from server */
+
+/*
+ * SMB flag2 definitions
+ */
+#define SMBFLG2_KNOWS_LONG_NAMES cpu_to_le16(1) /* can send long (non-8.3)
+ path names in response */
+#define SMBFLG2_KNOWS_EAS cpu_to_le16(2)
+#define SMBFLG2_SECURITY_SIGNATURE cpu_to_le16(4)
+#define SMBFLG2_COMPRESSED (8)
+#define SMBFLG2_SECURITY_SIGNATURE_REQUIRED (0x10)
+#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
+#define SMBFLG2_REPARSE_PATH (0x400)
+#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
+#define SMBFLG2_DFS cpu_to_le16(0x1000)
+#define SMBFLG2_PAGING_IO cpu_to_le16(0x2000)
+#define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)
+#define SMBFLG2_UNICODE cpu_to_le16(0x8000)
+
+/*
+ * File Attribute flags
+ */
+#define ATTR_READONLY 0x0001
+#define ATTR_HIDDEN 0x0002
+#define ATTR_SYSTEM 0x0004
+#define ATTR_VOLUME 0x0008
+#define ATTR_DIRECTORY 0x0010
+#define ATTR_ARCHIVE 0x0020
+#define ATTR_DEVICE 0x0040
+#define ATTR_NORMAL 0x0080
+#define ATTR_TEMPORARY 0x0100
+#define ATTR_SPARSE 0x0200
+#define ATTR_REPARSE 0x0400
+#define ATTR_COMPRESSED 0x0800
+#define ATTR_OFFLINE 0x1000 /* ie file not immediately available -
+ on offline storage */
+#define ATTR_NOT_CONTENT_INDEXED 0x2000
+#define ATTR_ENCRYPTED 0x4000
+#define ATTR_POSIX_SEMANTICS 0x01000000
+#define ATTR_BACKUP_SEMANTICS 0x02000000
+#define ATTR_DELETE_ON_CLOSE 0x04000000
+#define ATTR_SEQUENTIAL_SCAN 0x08000000
+#define ATTR_RANDOM_ACCESS 0x10000000
+#define ATTR_NO_BUFFERING 0x20000000
+#define ATTR_WRITE_THROUGH 0x80000000
+
+struct smb_hdr {
+ __be32 smb_buf_length; /* BB length is only two (rarely three) bytes,
+ with one or two byte "type" preceding it that will be
+ zero - we could mask the type byte off */
+ __u8 Protocol[4];
+ __u8 Command;
+ union {
+ struct {
+ __u8 ErrorClass;
+ __u8 Reserved;
+ __le16 Error;
+ } __attribute__((packed)) DosError;
+ __le32 CifsError;
+ } __attribute__((packed)) Status;
+ __u8 Flags;
+ __le16 Flags2; /* note: le */
+ __le16 PidHigh;
+ union {
+ struct {
+ __le32 SequenceNumber; /* le */
+ __u32 Reserved; /* zero */
+ } __attribute__((packed)) Sequence;
+ __u8 SecuritySignature[8]; /* le */
+ } __attribute__((packed)) Signature;
+ __u8 pad[2];
+ __u16 Tid;
+ __le16 Pid;
+ __u16 Uid;
+ __le16 Mid;
+ __u8 WordCount;
+} __attribute__((packed));
+
+/* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
+#define FILE_SUPPORTS_SPARSE_VDL 0x10000000 /* faster nonsparse extend */
+#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */
+#define FILE_SUPPORT_INTEGRITY_STREAMS 0x04000000
+#define FILE_SUPPORTS_USN_JOURNAL 0x02000000
+#define FILE_SUPPORTS_OPEN_BY_FILE_ID 0x01000000
+#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
+#define FILE_SUPPORTS_HARD_LINKS 0x00400000
+#define FILE_SUPPORTS_TRANSACTIONS 0x00200000
+#define FILE_SEQUENTIAL_WRITE_ONCE 0x00100000
+#define FILE_READ_ONLY_VOLUME 0x00080000
+#define FILE_NAMED_STREAMS 0x00040000
+#define FILE_SUPPORTS_ENCRYPTION 0x00020000
+#define FILE_SUPPORTS_OBJECT_IDS 0x00010000
+#define FILE_VOLUME_IS_COMPRESSED 0x00008000
+#define FILE_SUPPORTS_POSIX_UNLINK_RENAME 0x00000400
+#define FILE_RETURNS_CLEANUP_RESULT_INFO 0x00000200
+#define FILE_SUPPORTS_REMOTE_STORAGE 0x00000100
+#define FILE_SUPPORTS_REPARSE_POINTS 0x00000080
+#define FILE_SUPPORTS_SPARSE_FILES 0x00000040
+#define FILE_VOLUME_QUOTAS 0x00000020
+#define FILE_FILE_COMPRESSION 0x00000010
+#define FILE_PERSISTENT_ACLS 0x00000008
+#define FILE_UNICODE_ON_DISK 0x00000004
+#define FILE_CASE_PRESERVED_NAMES 0x00000002
+#define FILE_CASE_SENSITIVE_SEARCH 0x00000001
+
+#endif /* _COMMON_CIFSPDU_H */
diff --git a/fs/smb/server/smb_common.h b/fs/smb/server/smb_common.h
index 6d427dbed5fd..a326809f7765 100644
--- a/fs/smb/server/smb_common.h
+++ b/fs/smb/server/smb_common.h
@@ -11,6 +11,7 @@
#include "glob.h"
#include "nterr.h"
#include "../common/cifsglob.h"
+#include "../common/cifspdu.h"
#include "../common/smb2pdu.h"
#include "smb2pdu.h"

@@ -25,12 +26,9 @@
#define SMB30_PROT 4
#define SMB302_PROT 5
#define SMB311_PROT 6
-#define BAD_PROT 0xFFFF

#define SMB_ECHO_INTERVAL (60 * HZ)

-#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
-
#define MAX_STREAM_PROT_LEN 0x00FFFFFF

/* Responses when opening a file. */
@@ -39,44 +37,6 @@
#define F_CREATED 2
#define F_OVERWRITTEN 3

-/*
- * File Attribute flags
- */
-#define ATTR_POSIX_SEMANTICS 0x01000000
-#define ATTR_BACKUP_SEMANTICS 0x02000000
-#define ATTR_DELETE_ON_CLOSE 0x04000000
-#define ATTR_SEQUENTIAL_SCAN 0x08000000
-#define ATTR_RANDOM_ACCESS 0x10000000
-#define ATTR_NO_BUFFERING 0x20000000
-#define ATTR_WRITE_THROUGH 0x80000000
-
-/* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
-#define FILE_SUPPORTS_SPARSE_VDL 0x10000000 /* faster nonsparse extend */
-#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */
-#define FILE_SUPPORT_INTEGRITY_STREAMS 0x04000000
-#define FILE_SUPPORTS_USN_JOURNAL 0x02000000
-#define FILE_SUPPORTS_OPEN_BY_FILE_ID 0x01000000
-#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
-#define FILE_SUPPORTS_HARD_LINKS 0x00400000
-#define FILE_SUPPORTS_TRANSACTIONS 0x00200000
-#define FILE_SEQUENTIAL_WRITE_ONCE 0x00100000
-#define FILE_READ_ONLY_VOLUME 0x00080000
-#define FILE_NAMED_STREAMS 0x00040000
-#define FILE_SUPPORTS_ENCRYPTION 0x00020000
-#define FILE_SUPPORTS_OBJECT_IDS 0x00010000
-#define FILE_VOLUME_IS_COMPRESSED 0x00008000
-#define FILE_SUPPORTS_POSIX_UNLINK_RENAME 0x00000400
-#define FILE_RETURNS_CLEANUP_RESULT_INFO 0x00000200
-#define FILE_SUPPORTS_REMOTE_STORAGE 0x00000100
-#define FILE_SUPPORTS_REPARSE_POINTS 0x00000080
-#define FILE_SUPPORTS_SPARSE_FILES 0x00000040
-#define FILE_VOLUME_QUOTAS 0x00000020
-#define FILE_FILE_COMPRESSION 0x00000010
-#define FILE_PERSISTENT_ACLS 0x00000008
-#define FILE_UNICODE_ON_DISK 0x00000004
-#define FILE_CASE_PRESERVED_NAMES 0x00000002
-#define FILE_CASE_SENSITIVE_SEARCH 0x00000001
-
#define FILE_READ_DATA 0x00000001 /* Data can be read from the file */
#define FILE_WRITE_DATA 0x00000002 /* Data can be written to the file */
#define FILE_APPEND_DATA 0x00000004 /* Data can be appended to the file */
@@ -151,46 +111,8 @@
FILE_EXECUTE | FILE_DELETE_CHILD | \
FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES)

-#define SMB_COM_NEGOTIATE 0x72
#define SMB1_CLIENT_GUID_SIZE (16)

-#define SMBFLG_RESPONSE 0x80 /* this PDU is a response from server */
-
-#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
-#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
-#define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)
-#define SMBFLG2_UNICODE cpu_to_le16(0x8000)
-
-struct smb_hdr {
- __be32 smb_buf_length;
- __u8 Protocol[4];
- __u8 Command;
- union {
- struct {
- __u8 ErrorClass;
- __u8 Reserved;
- __le16 Error;
- } __packed DosError;
- __le32 CifsError;
- } __packed Status;
- __u8 Flags;
- __le16 Flags2; /* note: le */
- __le16 PidHigh;
- union {
- struct {
- __le32 SequenceNumber; /* le */
- __u32 Reserved; /* zero */
- } __packed Sequence;
- __u8 SecuritySignature[8]; /* le */
- } __packed Signature;
- __u8 pad[2];
- __le16 Tid;
- __le16 Pid;
- __le16 Uid;
- __le16 Mid;
- __u8 WordCount;
-} __packed;
-
struct smb_negotiate_req {
struct smb_hdr hdr; /* wct = 0 */
__le16 ByteCount;
--
2.43.0