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Add API to ExtractGuidedSectionLib.h to retrieve the set of registered handlers.

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API Function name is ExtractGuidedSectionGetHandlers.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11002 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10
2010-11-04 05:51:32 +00:00
parent 0a6c090521
commit 9be899c5cc
4 changed files with 247 additions and 1 deletions
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74
MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.c
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@@ -386,3 +386,77 @@ ExtractGuidedSectionDecode (
//
return RETURN_UNSUPPORTED;
}
/**
Retrieves handlers of type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER and
EXTRACT_GUIDED_SECTION_DECODE_HANDLER for a specific GUID section type.
Retrieves the handlers associated with SectionGuid and returns them in
GetInfoHandler and DecodeHandler.
If the GUID value specified by SectionGuid has not been registered, then
return RETURN_NOT_FOUND.
If SectionGuid is NULL, then ASSERT().
@param[in] SectionGuid A pointer to the GUID associated with the handlersof the GUIDed
section type being retrieved.
@param[out] GetInfoHandler Pointer to a function that examines a GUIDed section and returns
the size of the decoded buffer and the size of an optional scratch
buffer required to actually decode the data in a GUIDed section.
This is an optional parameter that may be NULL. If it is NULL, then
the previously registered handler is not returned.
@param[out] DecodeHandler Pointer to a function that decodes a GUIDed section into a caller
allocated output buffer. This is an optional parameter that may be NULL.
If it is NULL, then the previously registered handler is not returned.
@retval RETURN_SUCCESS The handlers were retrieved.
@retval RETURN_NOT_FOUND No handlers have been registered with the specified GUID.
**/
RETURN_STATUS
EFIAPI
ExtractGuidedSectionGetHandlers (
IN CONST GUID *SectionGuid,
OUT EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER *GetInfoHandler, OPTIONAL
OUT EXTRACT_GUIDED_SECTION_DECODE_HANDLER *DecodeHandler OPTIONAL
)
{
UINT32 Index;
RETURN_STATUS Status;
EXTRACT_GUIDED_SECTION_HANDLER_INFO *HandlerInfo;
//
// Check input paramter
//
ASSERT (SectionGuid != NULL);
//
// Get the registered handler information
//
Status = GetExtractGuidedSectionHandlerInfo (&HandlerInfo);
if (RETURN_ERROR (Status)) {
return Status;
}
//
// Search the match registered GetInfo handler for the input guided section.
//
ASSERT (HandlerInfo != NULL);
for (Index = 0; Index < HandlerInfo->NumberOfExtractHandler; Index ++) {
if (CompareGuid (HandlerInfo->ExtractHandlerGuidTable + Index, SectionGuid)) {
//
// If the guided handler has been registered before, then return the registered handlers.
//
if (GetInfoHandler != NULL) {
*GetInfoHandler = HandlerInfo->ExtractGetInfoHandlerTable[Index];
}
if (DecodeHandler != NULL) {
*DecodeHandler = HandlerInfo->ExtractDecodeHandlerTable[Index];
}
return RETURN_SUCCESS;
}
}
return RETURN_NOT_FOUND;
}