From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web08.8759.1605789980838394198 for ; Thu, 19 Nov 2020 04:46:21 -0800 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: arm.com, ip: 217.140.110.172, mailfrom: ard.biesheuvel@arm.com) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8C49C1396; Thu, 19 Nov 2020 04:46:20 -0800 (PST) Received: from [192.168.1.81] (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 095593F718; Thu, 19 Nov 2020 04:46:17 -0800 (PST) Subject: Re: [PATCH v9 00/13] Add the VariablePolicy feature To: Bret Barkelew , devel@edk2.groups.io Cc: Jiewen Yao , Dandan Bi , Chao Zhang , Jian J Wang , Hao A Wu , Liming Gao , Jordan Justen , Laszlo Ersek , Andrew Fish , Ray Ni , Bret Barkelew References: <20201109064522.919-1-bret.barkelew@microsoft.com> From: "Ard Biesheuvel" Message-ID: <0c1ea26d-e7f2-11d7-b7d1-66cd5def51b3@arm.com> Date: Thu, 19 Nov 2020 13:46:05 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201109064522.919-1-bret.barkelew@microsoft.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit On 11/9/20 7:45 AM, Bret Barkelew wrote: > 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 > Cc: Dandan Bi > Cc: Chao Zhang > Cc: Jian J Wang > Cc: Hao A Wu > Cc: Liming Gao > Cc: Jordan Justen > Cc: Laszlo Ersek > Cc: Ard Biesheuvel > Cc: Andrew Fish > Cc: Ray Ni > Cc: Bret Barkelew > Signed-off-by: Bret Barkelew > This series has now made it into edk2, and has subsequently broken every single platform in edk2-platforms. Is anyone intending to propose any fixes for this? > v9 changes: > * Rebase > * Address the event ordering issues around MorLock at EndOfDxe > * Drop problematic tests > * Address ECC issues > > v8 changes: > * Rebase > * Small tweaks from final PRs > * Drank a lot > * Enrolled several members and a steward in CatFacts > > 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 (13): > 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/Library/VarCheckPolicyLib/VarCheckPolicyLib.c | 346 ++++++++ > MdeModulePkg/Library/VariablePolicyHelperLib/VariablePolicyHelperLib.c | 396 ++++++++++ > MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitNull.c | 46 ++ > MdeModulePkg/Library/VariablePolicyLib/VariablePolicyExtraInitRuntimeDxe.c | 85 ++ > MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.c | 830 ++++++++++++++++++++ > 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 | 60 ++ > MdeModulePkg/Universal/Variable/RuntimeDxe/VariableLockRequestToLock.c | 71 ++ > MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c | 573 ++++++++++++++ > MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c | 7 + > MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmmRuntimeDxe.c | 14 + > SecurityPkg/Library/AuthVariableLib/AuthService.c | 30 +- > 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 | 406 ++++++++++ > MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.inf | 48 ++ > MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.uni | 12 + > MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLibRuntimeDxe.inf | 51 ++ > MdeModulePkg/MdeModulePkg.ci.yaml | 4 +- > MdeModulePkg/MdeModulePkg.dec | 26 +- > MdeModulePkg/MdeModulePkg.dsc | 9 + > MdeModulePkg/MdeModulePkg.uni | 7 + > MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf | 5 + > MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf | 4 + > MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmmRuntimeDxe.inf | 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 + > 43 files changed, 3845 insertions(+), 80 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/VariablePolicyExtraInitRuntimeDxe.c > create mode 100644 MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.c > create mode 100644 MdeModulePkg/Universal/Variable/RuntimeDxe/VariableLockRequestToLock.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 >