The SUA "chgrp" command changes the owner group of an NFS file to "root" unexpectedly in Windows 7 or in Windows Server 2008 R2

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Article ID: 2640130 - View products that this article applies to.
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Symptoms

Consider the following scenario:
  • You have the Subsystem for UNIX-based Applications (SUA) feature installed on a computer that is running Windows 7 or Windows Server 2008 R2.
  • You mount a network file system (NFS) shared resource on the computer.
  • You run the chgrp command to change the owner group of a file in the shared resource from one group to another group.
In this scenario, the owner group of the file is changed to root, regardless of the group that you actually specified.

Cause

When Windows-based credentials are mapped to UNIX-based credentials, users and groups are treated as being identical. This behavior causes the user identifier (UID) of the returned UNIX credentials to be treated as a group.

Note The expected behavior is that the UID of the returned UNIX credentials is treated as a user, and the group identifier (GID) of the returned UNIX credentials is treated as a group.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
Additionally, the Subsystem for UNIX-based Applications (SUA) feature must be installed on the computer.

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.1.760 0 . 21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1 . 21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Posix.exe6.1.7600.2109180,89616-Nov-201105:27x86
Psxdll.dll6.1.7600.21091309,24816-Nov-201105:32x86
Psxdllsvr.dll6.1.7600.21091357,88816-Nov-201105:32x86
Psxss.exe6.1.7600.21091657,40816-Nov-201105:27x86
Sua-ppdlic.xrm-msNot applicable2,98116-Nov-201105:45Not applicable
Psxdll.dll6.1.7601.21860309,24815-Nov-201105:28x86
Psxdllsvr.dll6.1.7601.21860357,88815-Nov-201105:28x86
Psxss.exe6.1.7601.21860657,40815-Nov-201105:25x86
Sua-ppdlic.xrm-msNot applicable2,98115-Nov-201105:46Not applicable
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Posix.exe6.1.7600.2109189,08816-Nov-201106:46x64
Psxdll.dll6.1.7600.21091330,24016-Nov-201106:52x64
Psxdllsvr.dll6.1.7600.21091378,36816-Nov-201106:52x64
Psxss.exe6.1.7600.21091849,92016-Nov-201106:46x64
Suacore-ppdlic.xrm-msNot applicable2,99316-Nov-201107:07Not applicable
Psxdll.dll6.1.7601.21860330,24015-Nov-201106:17x64
Psxdllsvr.dll6.1.7601.21860378,36815-Nov-201106:17x64
Psxss.exe6.1.7601.21860849,92015-Nov-201106:17x64
Suacore-ppdlic.xrm-msNot applicable2,99315-Nov-201106:34Not applicable
Posix.exe6.1.7600.2109189,08816-Nov-201106:46x64
Psxdll.dll6.1.7600.21091330,24016-Nov-201106:52x64
Psxdllsvr.dll6.1.7600.21091378,36816-Nov-201106:52x64
Psxss.exe6.1.7600.21091849,92016-Nov-201106:46x64
Sua-ppdlic.xrm-msNot applicable2,98116-Nov-201107:07Not applicable
Psxdll.dll6.1.7601.21860330,24015-Nov-201106:17x64
Psxdllsvr.dll6.1.7601.21860378,36815-Nov-201106:17x64
Psxss.exe6.1.7601.21860849,92015-Nov-201106:17x64
Sua-ppdlic.xrm-msNot applicable2,98115-Nov-201106:34Not applicable
Posixsscom.dll6.1.7600.210915,63216-Nov-201105:32x86
Psxdll.dll6.1.7600.21091328,19216-Nov-201105:32x86
Psxdllsvr.dll6.1.7600.21091376,83216-Nov-201105:32x86
Posixsscom.dll6.1.7601.218605,63215-Nov-201105:28x86
Psxdll.dll6.1.7601.21860328,19215-Nov-201105:28x86
Psxdllsvr.dll6.1.7601.21860376,83215-Nov-201105:28x86
Posixsscom.dll6.1.7600.210915,63216-Nov-201105:32x86
Psxdll.dll6.1.7600.21091328,19216-Nov-201105:32x86
Psxdllsvr.dll6.1.7600.21091376,83216-Nov-201105:32x86
Posixsscom.dll6.1.7601.218605,63215-Nov-201105:28x86
Psxdll.dll6.1.7601.21860328,19215-Nov-201105:28x86
Psxdllsvr.dll6.1.7601.21860376,83215-Nov-201105:28x86
For all supported IA-64–based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Posix.exe6.1.7600.21091181,24816-Nov-201105:26IA-64
Psxdll.dll6.1.7600.21091718,84816-Nov-201105:33IA-64
Psxdllsvr.dll6.1.7600.21091744,44816-Nov-201105:33IA-64
Psxss.exe6.1.7600.210911,649,66416-Nov-201105:26IA-64
Sua-ppdlic.xrm-msNot applicable2,98116-Nov-201105:46Not applicable
Psxdll.dll6.1.7601.21860718,84815-Nov-201105:38IA-64
Psxdllsvr.dll6.1.7601.21860744,44815-Nov-201105:38IA-64
Psxss.exe6.1.7601.218601,649,66415-Nov-201105:30IA-64
Sua-ppdlic.xrm-msNot applicable2,98115-Nov-201105:59Not applicable
Posixsscom.dll6.1.7600.210915,63216-Nov-201105:32x86
Psxdll.dll6.1.7600.21091328,19216-Nov-201105:32x86
Psxdllsvr.dll6.1.7600.21091376,83216-Nov-201105:32x86
Posixsscom.dll6.1.7601.218605,63215-Nov-201105:28x86
Psxdll.dll6.1.7601.21860328,19215-Nov-201105:28x86
Psxdllsvr.dll6.1.7601.21860376,83215-Nov-201105:28x86

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
For more information about the setuid, setgid, and sticky bits, visit the following Microsoft website:
General information about the setuid, setgid, and sticky bits
For more information about how to mount an NFS shared resource to a drive letter, visit the following Microsoft website:
General information about how to mount an NFS shared resource to a drive letter

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot applicable
File size2,428
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameX86_4354cfd17a97589bb9ebd97cd4293d36_31bf3856ad364e35_6.1.7601.21860_none_c378b874f99fa297.manifest
File versionNot applicable
File size707
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameX86_98e2bb87b430b979b806a807b197ab6d_31bf3856ad364e35_6.1.7600.21091_none_f30429a074034a49.manifest
File versionNot applicable
File size707
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameX86_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7600.21091_none_74395b406a6cacae.manifest
File versionNot applicable
File size62,446
Date (UTC)16-Nov-2011
Time (UTC)13:34
File nameX86_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7601.21860_none_763f5184677b7555.manifest
File versionNot applicable
File size62,446
Date (UTC)16-Nov-2011
Time (UTC)13:34
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_32c0a95d2161f7e03260f4d5a5fee2b0_31bf3856ad364e35_6.1.7600.21091_none_2eaa4cf59ee399c1.manifest
File versionNot applicable
File size716
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameAmd64_574ae64812c3e096756f9825d1f7fd1c_31bf3856ad364e35_6.1.7601.21860_none_20b5d56a6793b318.manifest
File versionNot applicable
File size716
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameAmd64_81f19198ba7aee90cebf95344a20a897_31bf3856ad364e35_6.1.7601.21860_none_f6bb957a3d11396f.manifest
File versionNot applicable
File size716
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameAmd64_90dd431fbf177c31cde1bd0b73b08da3_31bf3856ad364e35_6.1.7600.21091_none_684b16eaa8738546.manifest
File versionNot applicable
File size1,064
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameAmd64_9bd67db9faa14fb34c251fd51b647f98_31bf3856ad364e35_6.1.7601.21860_none_0545b0caaecb3ed9.manifest
File versionNot applicable
File size1,064
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameAmd64_a61e0b5bdcb721ef3d20e311d1c8dcaf_31bf3856ad364e35_6.1.7600.21091_none_0ace673653992351.manifest
File versionNot applicable
File size716
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameAmd64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.1.7600.21091_none_50cd18d1d3466182.manifest
File versionNot applicable
File size58,151
Date (UTC)16-Nov-2011
Time (UTC)13:40
File nameAmd64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.1.7601.21860_none_52d30f15d0552a29.manifest
File versionNot applicable
File size58,151
Date (UTC)16-Nov-2011
Time (UTC)13:40
File nameAmd64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7600.21091_none_d057f6c422ca1de4.manifest
File versionNot applicable
File size63,787
Date (UTC)16-Nov-2011
Time (UTC)13:40
File nameAmd64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7601.21860_none_d25ded081fd8e68b.manifest
File versionNot applicable
File size63,787
Date (UTC)16-Nov-2011
Time (UTC)13:40
File nameUpdate.mum
File versionNot applicable
File size3,251
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameWow64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.1.7600.21091_none_5b21c32407a7237d.manifest
File versionNot applicable
File size41,461
Date (UTC)16-Nov-2011
Time (UTC)05:49
File nameWow64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.1.7601.21860_none_5d27b96804b5ec24.manifest
File versionNot applicable
File size41,461
Date (UTC)15-Nov-2011
Time (UTC)05:46
File nameWow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7600.21091_none_daaca116572adfdf.manifest
File versionNot applicable
File size41,411
Date (UTC)16-Nov-2011
Time (UTC)05:49
File nameWow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7601.21860_none_dcb2975a5439a886.manifest
File versionNot applicable
File size41,411
Date (UTC)15-Nov-2011
Time (UTC)05:46
Additional files for all supported IA-64–based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_216ff4b49d62b9c5711b36491c4f5d05_31bf3856ad364e35_6.1.7601.21860_none_b9367f97c48b3dbb.manifest
File versionNot applicable
File size1,062
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameIa64_42792bfb65baa0ef2eaf951984c190f9_31bf3856ad364e35_6.1.7600.21091_none_0b700f3a516ebfc6.manifest
File versionNot applicable
File size1,062
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameIa64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7600.21091_none_743aff366a6ab5aa.manifest
File versionNot applicable
File size63,784
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameIa64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7601.21860_none_7640f57a67797e51.manifest
File versionNot applicable
File size63,784
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameUpdate.mum
File versionNot applicable
File size1,911
Date (UTC)16-Nov-2011
Time (UTC)13:27
File nameWow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7600.21091_none_daaca116572adfdf.manifest
File versionNot applicable
File size41,411
Date (UTC)16-Nov-2011
Time (UTC)05:49
File nameWow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.1.7601.21860_none_dcb2975a5439a886.manifest
File versionNot applicable
File size41,411
Date (UTC)15-Nov-2011
Time (UTC)05:46

Properties

Article ID: 2640130 - Last Review: January 4, 2013 - Revision: 2.0
Applies to
  • Windows 7 Professional
  • Windows 7 Enterprise
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Standard
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 for Itanium-Based Systems
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseadvanced KB2640130

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