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DuetPkg FSVariable: return error for empty str VariableName to GetVariable

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Current GetVariable implementation will return the first variable for
empty str VariableName, it is because GetVariable and GetNextVariablename
are sharing same function FindVariable.
But UEFI sepc defines SetVariable that If VariableName is an empty string,
then EFI_INVALID_PARAMETER is returned, that means an empty string variable
could never be set successfully, so GetVariable should return error for
empty string VariableName.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng 2016-05-13 13:01:28 +08:00
parent e19eab6153
commit 053d95e7e5
1 changed files with 4 additions and 0 deletions
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4
DuetPkg/FSVariable/FSVariable.c
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@ -1337,6 +1337,10 @@ Returns:
return EFI_INVALID_PARAMETER;
}
if (VariableName[0] == 0) {
return EFI_NOT_FOUND;
}
//
// Find existing variable
//