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ShellPkg: Set CRC value whenever changing a system table. 

This adds a function (from DxeMain.c) that calculates and sets a CRC into a system table header and then calls the function in the 2 places where the shell changes the system table.

signed-off-by: jcarsey
reviewed-by: geekboy15a

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12536 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jcarsey 2011-10-13 23:05:08 +00:00
parent 7a95efda40
commit cf6a8f1453
1 changed files with 29 additions and 0 deletions
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29
ShellPkg/Application/Shell/ShellParametersProtocol.c
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@ -470,6 +470,31 @@ StripQuotes (
}
}
/**
Calcualte the 32-bit CRC in a EFI table using the service provided by the
gRuntime service.
@param Hdr Pointer to an EFI standard header
**/
VOID
CalculateEfiHdrCrc (
IN OUT EFI_TABLE_HEADER *Hdr
)
{
UINT32 Crc;
Hdr->CRC32 = 0;
//
// If gBS->CalculateCrce32 () == CoreEfiNotAvailableYet () then
// Crc will come back as zero if we set it to zero here
//
Crc = 0;
gBS->CalculateCrc32 ((UINT8 *)Hdr, Hdr->HeaderSize, &Crc);
Hdr->CRC32 = Crc;
}
/**
Funcion will replace the current StdIn and StdOut in the ShellParameters protocol
structure by parsing NewCommandLine. The current values are returned to the
@ -1039,6 +1064,8 @@ UpdateStdInStdOutStdErr(
}
FreePool(CommandLineCopy);
CalculateEfiHdrCrc(&gST->Hdr);
if (gST->ConIn == NULL ||gST->ConOut == NULL) {
return (EFI_OUT_OF_RESOURCES);
}
@ -1112,6 +1139,8 @@ RestoreStdInStdOutStdErr (
gST->StandardErrorHandle = SystemTableInfo->ConErrHandle;
}
CalculateEfiHdrCrc(&gST->Hdr);
return (EFI_SUCCESS);
}
/**