[MS-CIFS]:

Common Internet File System (CIFS) Protocol

Intellectual Property Rights Notice for Open Specifications Documentation

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Revision Summary

Date

Revision History

Revision Class

Comments

9/25/2009

1.0

Major

First Release.

11/6/2009

2.0

Major

Updated and revised the technical content.

12/18/2009

3.0

Major

Updated and revised the technical content.

1/29/2010

4.0

Major

Updated and revised the technical content.

3/12/2010

5.0

Major

Updated and revised the technical content.

4/23/2010

6.0

Major

Updated and revised the technical content.

6/4/2010

7.0

Major

Updated and revised the technical content.

7/16/2010

8.0

Major

Updated and revised the technical content.

8/27/2010

9.0

Major

Updated and revised the technical content.

10/8/2010

10.0

Major

Updated and revised the technical content.

11/19/2010

11.0

Major

Updated and revised the technical content.

1/7/2011

12.0

Major

Updated and revised the technical content.

2/11/2011

13.0

Major

Updated and revised the technical content.

3/25/2011

14.0

Major

Updated and revised the technical content.

5/6/2011

15.0

Major

Updated and revised the technical content.

6/17/2011

15.1

Minor

Clarified the meaning of the technical content.

9/23/2011

16.0

Major

Updated and revised the technical content.

12/16/2011

17.0

Major

Updated and revised the technical content.

3/30/2012

18.0

Major

Updated and revised the technical content.

7/12/2012

19.0

Major

Updated and revised the technical content.

10/25/2012

20.0

Major

Updated and revised the technical content.

1/31/2013

21.0

Major

Updated and revised the technical content.

8/8/2013

22.0

Major

Updated and revised the technical content.

11/14/2013

22.0

None

No changes to the meaning, language, or formatting of the technical content.

2/13/2014

23.0

Major

Updated and revised the technical content.

5/15/2014

24.0

Major

Updated and revised the technical content.

6/30/2015

25.0

Major

Significantly changed the technical content.

10/16/2015

25.0

None

No changes to the meaning, language, or formatting of the technical content.

7/14/2016

26.0

Major

Significantly changed the technical content.

Table of Contents

1Introduction16

1.1Glossary16

1.2References22

1.2.1Normative References22

1.2.2Informative References23

1.3Overview26

1.4Relationship to Other Protocols28

1.5Prerequisites/Preconditions29

1.6Applicability Statement29

1.7Versioning and Capability Negotiation30

1.8Vendor-Extensible Fields31

1.9Standards Assignments32

2Messages33

2.1Transport33

2.1.1NetBIOS-Based Transports33

2.1.1.1NetBIOS Frames (NBF) Protocol Transport33

2.1.1.2NetBIOS over TCP/UDP (NBT) Transport34

2.1.1.3NetBIOS over IPX/SPX (NBIPX) Transport34

2.1.1.4Other NetBIOS-Based Transports34

2.1.2Direct Hosting34

2.1.2.1Direct IPX Transport34

2.1.3Virtual Circuits38

2.2Message Syntax38

2.2.1Common Data Types40

2.2.1.1Character Sequences41

2.2.1.1.1File and Directory names41

2.2.1.1.2Pathnames42

2.2.1.1.3Wildcards42

2.2.1.2File Attributes42

2.2.1.2.1SMB_GEA43

2.2.1.2.1.1SMB_GEA_LIST43

2.2.1.2.2SMB_FEA44

2.2.1.2.2.1SMB_FEA_LIST45

2.2.1.2.3SMB_EXT_FILE_ATTR45

2.2.1.2.4SMB_FILE_ATTRIBUTES46

2.2.1.3Named Pipe Status (SMB_NMPIPE_STATUS)47

2.2.1.4Time48

2.2.1.4.1SMB_DATE49

2.2.1.4.2SMB_TIME49

2.2.1.4.3UTIME49

2.2.1.5Status Codes (SMB_ERROR)50

2.2.1.6Unique Identifiers50

2.2.1.6.1FID Generation51

2.2.1.6.2MID Generation51

2.2.1.6.3PID Generation52

2.2.1.6.4Connection ID (CID) Generation52

2.2.1.6.5Search ID (SID) Generation52

2.2.1.6.6SessionKey Generation53

2.2.1.6.7TID Generation53

2.2.1.6.8UID Generation53

2.2.2Defined Constants54

2.2.2.1SMB_COM Command Codes54

2.2.2.2Transaction Subcommand Codes60

2.2.2.3Information Level Codes63

2.2.2.3.1FIND Information Level Codes64

2.2.2.3.2QUERY_FS Information Level Codes64

2.2.2.3.3QUERY Information Level Codes65

2.2.2.3.4SET Information Level Codes65

2.2.2.4SMB Error Classes and Codes66

2.2.2.5Data Buffer Format Codes76

2.2.3SMB Message Structure77

2.2.3.1The SMB Header77

2.2.3.2Parameter Block83

2.2.3.3Data Block83

2.2.3.4Batched Messages ("AndX" Messages)84

2.2.3.4.1Follow-on Commands84

2.2.4SMB Commands85

2.2.4.1SMB_COM_CREATE_DIRECTORY (0x00)85

2.2.4.1.1Request85

2.2.4.1.2Response86

2.2.4.2SMB_COM_DELETE_DIRECTORY (0x01)87

2.2.4.2.1Request87

2.2.4.2.2Response88

2.2.4.3SMB_COM_OPEN (0x02)90

2.2.4.3.1Request90

2.2.4.3.2Response93

2.2.4.4SMB_COM_CREATE (0x03)97

2.2.4.4.1Request97

2.2.4.4.2Response98

2.2.4.5SMB_COM_CLOSE (0x04)101

2.2.4.5.1Request101

2.2.4.5.2Response102

2.2.4.6SMB_COM_FLUSH (0x05)103

2.2.4.6.1Request103

2.2.4.6.2Response104

2.2.4.7SMB_COM_DELETE (0x06)106

2.2.4.7.1Request106

2.2.4.7.2Response108

2.2.4.8SMB_COM_RENAME (0x07)109

2.2.4.8.1Request109

2.2.4.8.2Response111

2.2.4.9SMB_COM_QUERY_INFORMATION (0x08)113

2.2.4.9.1Request113

2.2.4.9.2Response114

2.2.4.10SMB_COM_SET_INFORMATION (0x09)116

2.2.4.10.1Request116

2.2.4.10.2Response118

2.2.4.11SMB_COM_READ (0x0A)120

2.2.4.11.1Request120

2.2.4.11.2Response121

2.2.4.12SMB_COM_WRITE (0x0B)124

2.2.4.12.1Request125

2.2.4.12.2Response127