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14 Commits

Author SHA1 Message Date
niruiyu ff8438477f Add EDKII_VARIABLE_LOCK_PROTOCOL and the implementation in MdeModulePkg variable drivers. 
Add code in BdsDxe driver to call the protocol to mark the read-only variables defined in the UEFI Spec.

Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14372 6f19259b-4bc3-4df7-8a09-765794883524
 2013-05-17 03:49:35 +00:00
lzeng14 5e5bb2a9ba 1. Fix TOCTOU issue in VariableSmm, FtwSmm, FpdtSmm, SmmCorePerformance SMM handler. For VariableSmm, pre-allocate a mVariableBufferPayload buffer with mVariableBufferPayloadSize(match with mVariableBufferPayloadSize in VariableSmmRuntimeDxe) to hold communicate buffer payload to avoid TOCTOU issue. 
2. Add check to ensure CommBufferPayloadSize not exceed mVariableBufferPayloadSize or is enough to hold function structure in VariableSmm and FtwSmm.
3. Align FtwGetLastWrite() in FaultTolerantWriteSmmDxe.c to FtwGetLastWrite() in FaultTolerantWrite.c.

Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14325 6f19259b-4bc3-4df7-8a09-765794883524
 2013-05-07 05:38:32 +00:00
lzeng14 9d00d20ed4 1. Use the check IsAddressValid() to prevent SMM communication buffer overflow in SmmVariable, FtwSmm, FpdtSmm, SmmCorePerformance and SmmBaseHelper, and add check to prevent InfoSize overflows in SmmVariableHandler. 
2. Refine the debug message.
3. Add check to make sure the input VariableName is A Null-terminated string.
4. Use local variable to hold StrSize (VariableName) to avoid duplicated StrSize calculation.

Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14317 6f19259b-4bc3-4df7-8a09-765794883524
 2013-04-25 10:49:45 +00:00
czhang46 56251c669f Fix potential overflow for SetVariable interface 
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by  : Guo Dong   <dong.guo@intel.com>
Reviewed-by  : Siyuan Fu  <siyuan.fu@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14305 6f19259b-4bc3-4df7-8a09-765794883524
 2013-04-22 08:52:58 +00:00
czhang46 3a146f2a7d Fix SMM Variable driver stack GetVariable return INVALID_PARAMETER when DataSize is bigger than SMM communication buffer. 
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by  : Dong Guo   <guo.dong@intel.com>
Reviewed-by  : Fu Siyuan  <siyuan.fu@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14276 6f19259b-4bc3-4df7-8a09-765794883524
 2013-04-15 01:56:31 +00:00
czhang46 0c55190f40 Update SMM variable DXE driver GetNextVariable interface to comply with UEFI spec 
VariableNameSize is the returned buffer size. GetNextVariable should behavior correct if it is bigger than SMM communication buffer or less than string size of VariableName. 

Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by  : Dong Guo   <guo.dong@intel.com>
Reviewed-by  : Fu Siyuan  <siyuan.fu@intel.com>
Reviewed-by  : Zeng Star  <star.zeng@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14258 6f19259b-4bc3-4df7-8a09-765794883524
 2013-04-12 05:59:11 +00:00
lzeng14 3588bb3529 If DataSize or VariableNameSize is near MAX_ADDRESS, this can cause the computed PayLoadSize to overflow to a small value and pass the check in InitCommunicateBuffer(). To protect against this vulnerability, check DataSize and VariableNameSize to make sure PayloadSize doesn't overflow. 
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14252 6f19259b-4bc3-4df7-8a09-765794883524
 2013-04-08 06:56:08 +00:00
lzeng14 aab9212fa9 Fix the issue that RuntimeServiceQueryVariableInfo() in VariableSmmRuntimeDxe always return EFI_SUCCESS. 
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14050 6f19259b-4bc3-4df7-8a09-765794883524
 2013-01-15 06:43:24 +00:00
lzeng14 6ed1ec5946 Add the TPL raise/restore code for VariableSmmRuntimeDxe to avoid variable services reentry. 
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14038 6f19259b-4bc3-4df7-8a09-765794883524
 2013-01-08 02:07:14 +00:00
ydong10 96277f7402 Include read data buffer in CommBufferSize when calculate the buffer size. 
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13512 6f19259b-4bc3-4df7-8a09-765794883524
 2012-07-09 02:03:47 +00:00
gdong1 d00ed85e0a Puts SMM variable common definitions in SmmVariableCommon.h. 
Fixed a bug that SMM_VARIABLE_COMMUNICATE_VARIABLE_INFO_ENTRY was misused as SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11339 6f19259b-4bc3-4df7-8a09-765794883524
 2011-02-28 07:31:45 +00:00
gdong1 32732a333a Update inappropriate comments. 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11170 6f19259b-4bc3-4df7-8a09-765794883524
 2010-12-15 01:51:46 +00:00
gdong1 5c7fa42941 Add typecast to remove warning with ICC. 
VariableSmm.inf: Remove SmmLib 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11156 6f19259b-4bc3-4df7-8a09-765794883524
 2010-12-11 11:17:47 +00:00
gdong1 8a2d49964e Add SMM Variable implementation. 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11151 6f19259b-4bc3-4df7-8a09-765794883524
 2010-12-10 09:27:54 +00:00