From: Michael Kubacki <michael.kubacki@microsoft.com>
Adds a new module (dynamic shell command) to ShellPkg that lists
variable policy information for all UEFI variables on the system.
Some other UEFI variable related functionality is also included to
give a greater sense of platform UEFI variable state.
Like all dynamic shell commands, a platform only needs to include
VariablePolicyDynamicCommand.inf in their flash image to have
the command registered in their UEFI shell.
The shell command is added to OvmfPkg so it is available in an
easily obtainable virtual platform.
This is being made available to ease auditing and enabling of UEFI
variable policy to encourage its adoption for securing UEFI
variables.
---
Command Help:
Lists UEFI variable policy information.
VARPOLICY [-p] [-s] [-v]
-p - The policy flag will print variable policy info for each variable.
-s - The stats flag will print overall UEFI variable policy statistics.
-v - The verbose flag indicates all known information should be printed.
This includes a dump of the corresponding UEFI variable data in
addition to all other UEFI variable policy information.
EXAMPLES:
* To dump all active UEFI variables:
fs0:\> varpolicy
* To include UEFI variable policy information:
varpolicy -p
* To include UEFI variable statistics:
varpolicy -s
Press ENTER to continue or 'Q' break:
---
Images showing example output are available in the PR:
https://github.com/tianocore/edk2/pull/4835
Cc: Anatol Belski <anbelski@linux.microsoft.com>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jianyong Wu <jianyong.wu@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Julien Grall <julien@xen.org>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Michael Kubacki (3):
MdeModulePkg/VariablePolicy: Add more granular variable policy
querying
ShellPkg: Add varpolicy dynamic shell command
OvmfPkg: Add varpolicy shell command
MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c | 174 +++-
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.c | 304 ++++++
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c | 4 +-
MdeModulePkg/Universal/Variable/RuntimeDxe/VariablePolicySmmDxe.c | 346 ++++++-
ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.c | 1009 ++++++++++++++++++++
MdeModulePkg/Include/Guid/VarCheckPolicyMmi.h | 39 +-
MdeModulePkg/Include/Library/VariablePolicyLib.h | 107 +++
MdeModulePkg/Include/Protocol/VariablePolicy.h | 133 ++-
MdeModulePkg/Library/VariablePolicyLib/VariablePolicyLib.inf | 1 +
OvmfPkg/CloudHv/CloudHvX64.dsc | 4 +
OvmfPkg/Microvm/MicrovmX64.dsc | 4 +
OvmfPkg/OvmfPkgIa32.dsc | 4 +
OvmfPkg/OvmfPkgIa32X64.dsc | 4 +
OvmfPkg/OvmfPkgX64.dsc | 4 +
OvmfPkg/OvmfXen.dsc | 4 +
ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.h | 94 ++
ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.inf | 56 ++
ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.uni | 86 ++
ShellPkg/ShellPkg.dsc | 1 +
19 files changed, 2332 insertions(+), 46 deletions(-)
create mode 100644 ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.c
create mode 100644 ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.h
create mode 100644 ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.inf
create mode 100644 ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.uni
--
2.42.0.windows.2
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