/**
Function gets the file information from an open file descriptor, and stores it
in a buffer allocated from pool.
@param FHand File Handle.
@return A pointer to a buffer with file information or NULL is returned
**/
EFI_FILE_INFO *
EfiLibFileInfo (
IN EFI_FILE_HANDLE FHand
)
{
EFI_STATUS Status;
EFI_FILE_INFO *Buffer;
UINTN BufferSize;
//
// Initialize for GrowBuffer loop
//
Buffer = NULL;
BufferSize = SIZE_OF_EFI_FILE_INFO + 200;
//
// Call the real function
//
while (EfiGrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) {
Status = FHand->GetInfo (
FHand,
&gEfiFileInfoGuid,
&BufferSize,
Buffer
);
}
return Buffer;
}
/**
Function gets the file system information from an open file descriptor,
and stores it in a buffer allocated from pool.
@param FHand The file handle.
@return A pointer to a buffer with file information.
@retval NULL is returned if failed to get Vaolume Label Info.
**/
EFI_FILE_SYSTEM_VOLUME_LABEL *
EfiLibFileSystemVolumeLabelInfo (
IN EFI_FILE_HANDLE FHand
)
{
EFI_STATUS Status;
EFI_FILE_SYSTEM_VOLUME_LABEL *Buffer;
UINTN BufferSize;
//
// Initialize for GrowBuffer loop
//
Buffer = NULL;
BufferSize = SIZE_OF_EFI_FILE_SYSTEM_VOLUME_LABEL + 200;
//
// Call the real function
//
while (EfiGrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) {
Status = FHand->GetInfo (
FHand,
&gEfiFileSystemVolumeLabelInfoIdGuid,
&BufferSize,
Buffer
);
}
return Buffer;
}
/**
Function gets the file information from an open file descriptor, and stores it
in a buffer allocated from pool.
@param FHand File Handle.
@return A pointer to a buffer with file information or NULL is returned
**/
EFI_FILE_INFO *
EfiLibFileInfo (
IN EFI_FILE_HANDLE FHand
)
{
#if 0
EFI_STATUS Status = EFI_SUCCESS;
EFI_FILE_INFO *Buffer = NULL;
UINTN BufferSize = 0;
//
// Initialize for GrowBuffer loop
//
Buffer = NULL;
BufferSize = SIZE_OF_EFI_FILE_INFO + 200;
//
// Call the real function
//
while (EfiGrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) {
Status = FHand->GetInfo (
FHand,
&gEfiFileInfoGuid,
&BufferSize,
Buffer
);
}
return Buffer;
#else
EFI_STATUS Status;
EFI_FILE_INFO *FileInfo = NULL;
UINTN Size = 0;
Status = FHand->GetInfo (FHand, &gEfiFileInfoGuid, &Size, FileInfo);
if (Status == EFI_BUFFER_TOO_SMALL) {
// inc size by 2 because some drivers (HFSPlus.efi) do not count 0 at the end of file name
Size += 2;
FileInfo = AllocateZeroPool (Size);
Status = FHand->GetInfo (FHand, &gEfiFileInfoGuid, &Size, FileInfo);
}
return EFI_ERROR(Status)?NULL:FileInfo;
#endif
}
/**
Function gets the file system information from an open file descriptor,
and stores it in a buffer allocated from pool.
@param FHand The file handle.
@return A pointer to a buffer with file information.
@retval NULL is returned if failed to get Vaolume Label Info.
**/
EFI_FILE_SYSTEM_VOLUME_LABEL *
EfiLibFileSystemVolumeLabelInfo (
IN EFI_FILE_HANDLE FHand
)
{
#if 0
EFI_STATUS Status = EFI_SUCCESS;
EFI_FILE_SYSTEM_VOLUME_LABEL *Buffer;
UINTN BufferSize;
//
// Initialize for GrowBuffer loop
//
Buffer = NULL;
BufferSize = SIZE_OF_EFI_FILE_SYSTEM_VOLUME_LABEL + 200;
//
// Call the real function
//
while (EfiGrowBuffer (&Status, (VOID **) &Buffer, BufferSize)) {
Status = FHand->GetInfo (
FHand,
&gEfiFileSystemVolumeLabelInfoIdGuid,
&BufferSize,
Buffer
);
}
return Buffer;
#else
EFI_STATUS Status;
EFI_FILE_SYSTEM_VOLUME_LABEL *VolumeInfo = NULL;
UINTN Size = 0;
Status = FHand->GetInfo (FHand, &gEfiFileSystemVolumeLabelInfoIdGuid, &Size, VolumeInfo);
if (Status == EFI_BUFFER_TOO_SMALL) {
// inc size by 2 because some drivers (HFSPlus.efi) do not count 0 at the end of file name
Size += 2;
VolumeInfo = AllocateZeroPool (Size);
Status = FHand->GetInfo (FHand, &gEfiFileSystemVolumeLabelInfoIdGuid, &Size, VolumeInfo);
// Check to make sure this isn't actually EFI_FILE_SYSTEM_INFO
if (!EFI_ERROR(Status))
{
EFI_FILE_SYSTEM_INFO *FSInfo = (EFI_FILE_SYSTEM_INFO *)VolumeInfo;
if (FSInfo->Size == (UINT64)Size)
{
// Allocate a new volume label
VolumeInfo = (EFI_FILE_SYSTEM_VOLUME_LABEL *)EfiStrDuplicate(FSInfo->VolumeLabel);
FreePool(FSInfo);
}
}
if (!EFI_ERROR(Status))
{
return VolumeInfo;
}
FreePool(VolumeInfo);
}
return NULL;
#endif
}
