Code Scrub: Code has been checked with MDE spec
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6606 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -120,12 +120,18 @@ PeiGetExtractGuidedSectionHandlerInfo (
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}
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/**
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Get the supported exract guided section Handler guid list.
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If ExtractHandlerGuidTable = NULL, then ASSERT.
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Retrieve the list GUIDs that have been registered through ExtractGuidedSectionRegisterHandlers().
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@param[out] ExtractHandlerGuidTable The extract Handler guid pointer list.
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Sets ExtractHandlerGuidTable so it points at a callee allocated array of registered GUIDs.
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The total number of GUIDs in the array are returned. Since the array of GUIDs is callee allocated
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and caller must treat this array of GUIDs as read-only data.
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If ExtractHandlerGuidTable is NULL, then ASSERT().
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@param[out] ExtractHandlerGuidTable A pointer to the array of GUIDs tht have been registerd through
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ExtractGuidedSectionRegisterHandlers().
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@return the number of the supported extract guided Handler.
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**/
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UINTN
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EFIAPI
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@@ -154,15 +160,28 @@ ExtractGuidedSectionGetGuidList (
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}
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/**
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Register Guided Section Extract and GetInfo handler.
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Registers handlers of type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER and EXTRACT_GUIDED_SECTION_DECODE_HANDLER
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for a specific GUID section type.
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@param[in] SectionGuid The guid matches this Extraction function.
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@param[in] GetInfoHandler Function to get info from guided section.
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@param[in] DecodeHandler Function to extract guided section.
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Registers the handlers specified by GetInfoHandler and DecodeHandler witg the GUID specified by SectionGuid.
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If the GUID value specified by SectionGuid has already been registered, then return RETURN_ALREADY_STARTED.
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If there are not enough resources available to register the handlers then RETURN_OUT_OF_RESOURCES is returned.
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If SectionGuid is NULL, then ASSERT().
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If GetInfoHandler is NULL, then ASSERT().
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If DecodeHandler is NULL, then ASSERT().
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@param[in] SectionGuid A pointer to the GUID associated with the the handlers
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of the GUIDed section type being registered.
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@param[in] GetInfoHandler Pointer to a function that examines a GUIDed section and returns the
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size of the decoded buffer and the size of an optional scratch buffer
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required to actually decode the data in a GUIDed section.
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@param[in] DecodeHandler Pointer to a function that decodes a GUIDed section into a caller
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allocated output buffer.
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@retval RETURN_SUCCESS The handlers were registered.
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@retval RETURN_ALREADY_STARTED Handlers have already been registered for the GUID specified by SectionGuid.
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@retval RETURN_OUT_OF_RESOURCES There are not enough resources available to register the handlers.
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@retval RETURN_SUCCESS Register Guided Section Extract function successfully.
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@retval RETURN_OUT_OF_RESOURCES Resource is not enough to register new function.
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@retval RETURN_INVALID_PARAMETER Input pointer to Guid value is not valid.
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**/
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RETURN_STATUS
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EFIAPI
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@@ -177,11 +196,13 @@ ExtractGuidedSectionRegisterHandlers (
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PEI_EXTRACT_GUIDED_SECTION_HANDLER_INFO *HandlerInfo;
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//
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// Check input paramter.
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// Check input paramter
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//
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if (SectionGuid == NULL) {
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return RETURN_INVALID_PARAMETER;
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}
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ASSERT (SectionGuid != NULL);
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ASSERT (GetInfoHandler != NULL);
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ASSERT (DecodeHandler != NULL);
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//
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// Get the registered handler information
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@@ -223,24 +244,36 @@ ExtractGuidedSectionRegisterHandlers (
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}
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/**
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Get information from the guided section. This function first gets the guid value
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from guided section header, then match this guid in the registered extract Handler list
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to its corresponding getinfo Handler.
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If not found, RETURN_INVALID_PARAMETER will be return.
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If found, it will call the getinfo Handler to get the required size and attribute.
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Retrives a GUID from a GUIDed section and uses that GUID to select an associated handler of type
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EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers().
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The selected handler is used to retrieve and return the size of the decoded buffer and the size of an
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optional scratch buffer required to actually decode the data in a GUIDed section.
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It will ASSERT () if the pointer to OutputBufferSize is NULL.
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It will ASSERT () if the pointer to ScratchBufferSize is NULL.
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It will ASSERT () if the pointer to SectionAttribute is NULL.
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Examines a GUIDed section specified by InputSection.
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If GUID for InputSection does not match any of the GUIDs registered through ExtractGuidedSectionRegisterHandlers(),
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then RETURN_UNSUPPORTED is returned.
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If the GUID of InputSection does match the GUID that this handler supports, then the the associated handler
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of type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers()
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is used to retrieve the OututBufferSize, ScratchSize, and Attributes values. The return status from the handler of
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type EXTRACT_GUIDED_SECTION_GET_INFO_HANDLER is returned.
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If InputSection is NULL, then ASSERT().
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If OutputBufferSize is NULL, then ASSERT().
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If ScratchBufferSize is NULL, then ASSERT().
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If SectionAttribute is NULL, then ASSERT().
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@param[in] InputSection Buffer containing the input GUIDed section to be processed.
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@param[out] OutputBufferSize The size of OutputBuffer.
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@param[out] ScratchBufferSize The size of ScratchBuffer.
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@param[out] SectionAttribute The attribute of the input guided section.
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@param[in] InputSection A pointer to a GUIDed section of an FFS formatted file.
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@param[out] OutputBufferSize A pointer to the size, in bytes, of an output buffer required if the buffer
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specified by InputSection were decoded.
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@param[out] ScratchBufferSize A pointer to the size, in bytes, required as scratch space if the buffer specified by
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InputSection were decoded.
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@param[out] SectionAttribute A pointer to the attributes of the GUIDed section. See the Attributes field of
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EFI_GUID_DEFINED_SECTION in the PI Specification.
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@retval RETURN_SUCCESS Get the required information successfully.
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@retval RETURN_UNSUPPORTED Guided section data is not supported.
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@retval RETURN_INVALID_PARAMETER The input data is not the valid guided section.
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@retval RETURN_SUCCESS Get the required information successfully.
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@retval RETURN_UNSUPPORTED The GUID from the section specified by InputSection does not match any of
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the GUIDs registered with ExtractGuidedSectionRegisterHandlers().
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@retval Others The return status from the handler associated with the GUID retrieved from
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the section specified by InputSection.
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**/
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RETURN_STATUS
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@@ -259,10 +292,7 @@ ExtractGuidedSectionGetInfo (
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//
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// Check input paramter
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//
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if (InputSection == NULL) {
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return RETURN_INVALID_PARAMETER;
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}
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ASSERT (InputSection != NULL);
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ASSERT (OutputBufferSize != NULL);
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ASSERT (ScratchBufferSize != NULL);
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ASSERT (SectionAttribute != NULL);
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@@ -299,28 +329,37 @@ ExtractGuidedSectionGetInfo (
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}
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/**
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Extract data from the guided section. This function first gets the guid value
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from guided section header, then match this guid in the registered extract Handler list
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to its corresponding extract Handler.
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If not found, RETURN_INVALID_PARAMETER will be return.
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If found, it will call this extract Handler to get output data and AuthenticationStatus.
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Retrives the GUID from a GUIDed section and uses that GUID to select an associated handler of type
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EXTRACT_GUIDED_SECTION_DECODE_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers().
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The selected handler is used to decode the data in a GUIDed section and return the result in a caller
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allocated output buffer.
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It will ASSERT () if the pointer to OutputBuffer is NULL.
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It will ASSERT () if the pointer to AuthenticationStatus is NULL.
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Decodes the GUIDed section specified by InputSection.
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If GUID for InputSection does not match any of the GUIDs registered through ExtractGuidedSectionRegisterHandlers(),
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then RETURN_UNSUPPORTED is returned.
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If the GUID of InputSection does match the GUID that this handler supports, then the the associated handler
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of type EXTRACT_GUIDED_SECTION_DECODE_HANDLER that was registered with ExtractGuidedSectionRegisterHandlers()
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is used to decode InputSection into the buffer specified by OutputBuffer and the authentication status of this
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decode operation is returned in AuthenticationStatus. If the decoded buffer is identical to the data in InputSection,
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then OutputBuffer is set to point at the data in InputSection. Otherwise, the decoded data will be placed in caller
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allocated buffer specified by OutputBuffer. This function is responsible for computing the EFI_AUTH_STATUS_PLATFORM_OVERRIDE
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bit of in AuthenticationStatus. The return status from the handler of type EXTRACT_GUIDED_SECTION_DECODE_HANDLER is returned.
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If InputSection is NULL, then ASSERT().
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If OutputBuffer is NULL, then ASSERT().
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If ScratchBuffer is NULL and this decode operation requires a scratch buffer, then ASSERT().
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If AuthenticationStatus is NULL, then ASSERT().
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@param[in] InputSection Buffer containing the input GUIDed section to be processed.
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@param[out] OutputBuffer OutputBuffer to point the start of the section's contents
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if guided data is not required prcessing. Otherwise,
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OutputBuffer to contain the output data, which is
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allocated by the caller.
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@param[out] ScratchBuffer A pointer to a caller-allocated buffer for function internal use.
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@param[in] InputSection A pointer to a GUIDed section of an FFS formatted file.
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@param[out] OutputBuffer A pointer to a buffer that contains the result of a decode operation.
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@param[in] ScratchBuffer A caller allocated buffer that may be required by this function as a scratch buffer to perform the decode operation.
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@param[out] AuthenticationStatus
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A pointer to a caller-allocated UINT32 that indicates the
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authentication status of the output buffer.
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A pointer to the authentication status of the decoded output buffer. See the definition
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of authentication status in the EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI section of the PI
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Specification.
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@retval RETURN_SUCCESS Get the output data, size and AuthenticationStatus successfully.
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@retval RETURN_UNSUPPORTED Guided section data is not supported to be decoded.
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@retval RETURN_INVALID_PARAMETER The input data is not the valid guided section.
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@retval RETURN_SUCCESS The buffer specified by InputSection was decoded.
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@retval RETURN_UNSUPPORTED The section specified by InputSection does not match the GUID this handler supports.
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@retval RETURN_INVALID_PARAMETER The section specified by InputSection can not be decoded.
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**/
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RETURN_STATUS
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@@ -328,7 +367,7 @@ EFIAPI
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ExtractGuidedSectionDecode (
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IN CONST VOID *InputSection,
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OUT VOID **OutputBuffer,
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OUT VOID *ScratchBuffer, OPTIONAL
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IN VOID *ScratchBuffer, OPTIONAL
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OUT UINT32 *AuthenticationStatus
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)
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{
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@@ -339,9 +378,7 @@ ExtractGuidedSectionDecode (
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//
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// Check input parameter
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//
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if (InputSection == NULL) {
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return RETURN_INVALID_PARAMETER;
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}
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ASSERT (InputSection != NULL);
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ASSERT (OutputBuffer != NULL);
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ASSERT (AuthenticationStatus != NULL);
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