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OcFileLib: Provide slow path for getting file size

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This commit is contained in:
vit9696 2021-01-17 01:57:19 +03:00
parent 7a569d7d7a
commit 2b7ed55cf2
1 changed files with 15 additions and 2 deletions
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17
Library/OcFileLib/FileProtocol.c
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@ -124,11 +124,24 @@ GetFileSize (
OUT UINT32 *Size
)
{
EFI_STATUS Status;
UINT64 Position;
EFI_STATUS Status;
UINT64 Position;
EFI_FILE_INFO *FileInfo;
Status = File->SetPosition (File, 0xFFFFFFFFFFFFFFFFULL);
if (EFI_ERROR (Status)) {
//
// Some drivers, like EfiFs, return EFI_UNSUPPORTED when trying to seek
// past the file size. Use slow method via attributes for them.
//
FileInfo = GetFileInfo (File, &gEfiFileInfoGuid, sizeof (*FileInfo), NULL);
if (FileInfo != NULL) {
if ((UINT32) FileInfo->FileSize == FileInfo->FileSize) {
*Size = (UINT32) FileInfo->FileSize;
Status = EFI_SUCCESS;
}
FreePool (FileInfo);
}
return Status;
}