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ShellPkg: Set CRC value whenever changing a system table.

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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 Funcion will replace the current StdIn and StdOut in the ShellParameters protocol
structure by parsing NewCommandLine. The current values are returned to the structure by parsing NewCommandLine. The current values are returned to the
@ -1039,6 +1064,8 @@ UpdateStdInStdOutStdErr(
} }
FreePool(CommandLineCopy); FreePool(CommandLineCopy);
CalculateEfiHdrCrc(&gST->Hdr);
if (gST->ConIn == NULL ||gST->ConOut == NULL) { if (gST->ConIn == NULL ||gST->ConOut == NULL) {
return (EFI_OUT_OF_RESOURCES); return (EFI_OUT_OF_RESOURCES);
} }
@ -1112,6 +1139,8 @@ RestoreStdInStdOutStdErr (
gST->StandardErrorHandle = SystemTableInfo->ConErrHandle; gST->StandardErrorHandle = SystemTableInfo->ConErrHandle;
} }
CalculateEfiHdrCrc(&gST->Hdr);
return (EFI_SUCCESS); return (EFI_SUCCESS);
} }
/** /**