Re: [PATCH v7 00/14] Add the VariablePolicy feature


Dandan Bi
 

Hi Bret,

The V7 version is OK from my side. Reviewed-by: Dandan Bi <dandan.bi@intel.com>
Please hold to see if any comments from other reviewers.


Hi Jiewen and Jian,

Do you have any comments?



Thanks,
Dandan

-----Original Message-----
From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Bret
Barkelew
Sent: Friday, August 28, 2020 1:51 PM
To: devel@edk2.groups.io
Cc: Yao, Jiewen <jiewen.yao@intel.com>; Chao Zhang
<chao.b.zhang@intel.com>; Wang, Jian J <jian.j.wang@intel.com>; Wu, Hao
A <hao.a.wu@intel.com>; Gao, Liming <liming.gao@intel.com>; Justen,
Jordan L <jordan.l.justen@intel.com>; Laszlo Ersek <lersek@redhat.com>;
Ard Biesheuvel <ard.biesheuvel@arm.com>; Andrew Fish
<afish@apple.com>; Ni, Ray <ray.ni@intel.com>
Subject: [edk2-devel] [PATCH v7 00/14] Add the VariablePolicy feature

The 14 patches in this series add the VariablePolicy feature to the core,
deprecate Edk2VarLock (while adding a compatibility layer to reduce code
churn), and integrate the VariablePolicy libraries and protocols into Variable
Services.

Since the integration requires multiple changes, including adding libraries, a
protocol, an SMI communication handler, and VariableServices integration,
the patches are broken up by individual library additions and then a final
integration. Security-sensitive changes like bypassing Authenticated Variable
enforcement are also broken out into individual patches so that attention can
be called directly to them.

Platform porting instructions are described in this wiki entry:
https://github.com/tianocore/tianocore.github.io/wiki/VariablePolicy-
Protocol---Enhanced-Method-for-Managing-Variables#platform-porting

Discussion of the feature can be found in multiple places throughout the last
year on the RFC channel, staging branches, and in devel.

Most recently, this subject was discussed in this thread:
https://edk2.groups.io/g/devel/message/53712
(the code branches shared in that discussion are now out of date, but the
whitepapers and discussion are relevant).

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Bret Barkelew <brbarkel@microsoft.com>
Signed-off-by: Bret Barkelew <brbarkel@microsoft.com>

v7 changes:
* Address comments from Dandan about security of the MM handler
* Add readme
* Fix bug around hex characters in BOOT####, etc
* Add additional testing for hex characters
* Add additional testing for authenticated variables

v6 changes:
* Fix an issue with uninitialized Status in InitVariablePolicyLib() and
DeinitVariablePolicyLib()
* Fix GCC building in shell-based functional test
* Rebase on latest origin/master

v5 changes:
* Fix the CONST mismatch in VariablePolicy.h and VariablePolicySmmDxe.c
* Fix EFIAPI mismatches in the functional unittest
* Rebase on latest origin/master

v4 changes:
* Remove Optional PcdAllowVariablePolicyEnforcementDisable PCD from
platforms
* Rebase on master
* Migrate to new MmCommunicate2 protocol
* Fix an oversight in the default return value for
InitMmCommonCommBuffer
* Fix in VariablePolicyLib to allow ExtraInitRuntimeDxe to consume variables

V3 changes:
* Address all non-unittest issues with ECC
* Make additional style changes
* Include section name in hunk headers in "ini-style" files
* Remove requirement for the EdkiiPiSmmCommunicationsRegionTable
driver
(now allocates its own buffer)
* Change names from VARIABLE_POLICY_PROTOCOL and
gVariablePolicyProtocolGuid
to EDKII_VARIABLE_POLICY_PROTOCOL and
gEdkiiVariablePolicyProtocolGuid
* Fix GCC warning about initializing externs
* Add UNI strings for new PCD
* Add patches for ArmVirtPkg, OvmfXen, and UefiPayloadPkg
* Reorder patches according to Liming's feedback about adding to platforms
before changing variable driver

V2 changes:
* Fixed implementation for RuntimeDxe
* Add PCD to block DisableVariablePolicy
* Fix the DumpVariablePolicy pagination in SMM


Bret Barkelew (14):
MdeModulePkg: Define the VariablePolicy protocol interface
MdeModulePkg: Define the VariablePolicyLib
MdeModulePkg: Define the VariablePolicyHelperLib
MdeModulePkg: Define the VarCheckPolicyLib and SMM interface
OvmfPkg: Add VariablePolicy engine to OvmfPkg platform
EmulatorPkg: Add VariablePolicy engine to EmulatorPkg platform
ArmVirtPkg: Add VariablePolicy engine to ArmVirtPkg platform
UefiPayloadPkg: Add VariablePolicy engine to UefiPayloadPkg platform
MdeModulePkg: Connect VariablePolicy business logic to
VariableServices
MdeModulePkg: Allow VariablePolicy state to delete protected variables
SecurityPkg: Allow VariablePolicy state to delete authenticated
variables
MdeModulePkg: Change TCG MOR variables to use VariablePolicy
MdeModulePkg: Drop VarLock from RuntimeDxe variable driver
MdeModulePkg: Add a shell-based functional test for VariablePolicy

MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c
| 345 +++
MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.c
| 396 ++++
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitNull.c
| 46 +

MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitRuntimeDx
e.c | 85 +
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.c
| 830 +++++++

MdeModulePkg/Library/VariablePolicyLib/VariablePolicyUnitTest/VariablePo
licyUnitTest.c | 2452 ++++++++++++++++++++

MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/VariablePolicyFu
ncTestApp.c | 2226 ++++++++++++++++++
MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockDxe.c
| 52 +-
MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockSmm.c
| 60 +-
MdeModulePkg/Universal/Variable/RuntimeDxe/VarCheck.c
| 49 +-
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c
| 53 +

MdeModulePkg/Universal/Variable/RuntimeDxe/VariableLockRequstToLock
.c | 71 +
MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c
| 642 +++++

MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmmRuntimeDxe.
c | 14 +
SecurityPkg/Library/AuthVariableLib/AuthService.c | 22
+-
ArmVirtPkg/ArmVirt.dsc.inc | 4 +
EmulatorPkg/EmulatorPkg.dsc | 3 +
MdeModulePkg/Include/Guid/VarCheckPolicyMmi.h |
54 +
MdeModulePkg/Include/Library/VariablePolicyHelperLib.h
| 164 ++
MdeModulePkg/Include/Library/VariablePolicyLib.h |
207 ++
MdeModulePkg/Include/Protocol/VariablePolicy.h |
157 ++
MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.inf
| 42 +
MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.uni
| 12 +
MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.inf
| 35 +
MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.uni
| 12 +
MdeModulePkg/Library/VariablePolicyLib/ReadMe.md |
410 ++++
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.inf
| 49 +
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.uni
| 12 +
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLibRuntimeDxe.inf
| 51 +

MdeModulePkg/Library/VariablePolicyLib/VariablePolicyUnitTest/VariablePo
licyUnitTest.inf | 45 +
MdeModulePkg/MdeModulePkg.ci.yaml | 8 +-
MdeModulePkg/MdeModulePkg.dec | 26 +-
MdeModulePkg/MdeModulePkg.dsc | 9 +
MdeModulePkg/MdeModulePkg.uni | 7 +
MdeModulePkg/Test/MdeModulePkgHostTest.dsc |
11 +
MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/Readme.md
| 55 +

MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/VariablePolicyFu
ncTestApp.inf | 47 +

MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/VariablePolicyTe
stAuthVar.h | 128 +
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
| 5 +
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf
| 4 +

MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmmRuntimeDxe.i
nf | 11 +

MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf
| 4 +
OvmfPkg/OvmfPkgIa32.dsc | 5 +
OvmfPkg/OvmfPkgIa32X64.dsc | 5 +
OvmfPkg/OvmfPkgX64.dsc | 5 +
OvmfPkg/OvmfXen.dsc | 4 +
SecurityPkg/Library/AuthVariableLib/AuthVariableLib.inf |
2 +
UefiPayloadPkg/UefiPayloadPkgIa32.dsc | 4 +
UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc | 4 +
49 files changed, 8865 insertions(+), 79 deletions(-) create mode 100644
MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c
create mode 100644
MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.c
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitNull.c
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitRuntimeDx
e.c
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.c
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyUnitTest/VariablePo
licyUnitTest.c
create mode 100644
MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/VariablePolicyFu
ncTestApp.c
create mode 100644
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableLockRequstToLock
.c
create mode 100644
MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c
create mode 100644 MdeModulePkg/Include/Guid/VarCheckPolicyMmi.h
create mode 100644
MdeModulePkg/Include/Library/VariablePolicyHelperLib.h
create mode 100644 MdeModulePkg/Include/Library/VariablePolicyLib.h
create mode 100644 MdeModulePkg/Include/Protocol/VariablePolicy.h
create mode 100644
MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.inf
create mode 100644
MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.uni
create mode 100644
MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.inf
create mode 100644
MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.uni
create mode 100644 MdeModulePkg/Library/VariablePolicyLib/ReadMe.md
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.inf
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.uni
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLibRuntimeDxe.inf
create mode 100644
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyUnitTest/VariablePo
licyUnitTest.inf
create mode 100644
MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/Readme.md
create mode 100644
MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/VariablePolicyFu
ncTestApp.inf
create mode 100644
MdeModulePkg/Test/ShellTest/VariablePolicyFuncTestApp/VariablePolicyTe
stAuthVar.h

--
2.28.0.windows.1


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