Create utils file

Move some functions currently used within fallback that will later also
be used in shim.

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>

1 files changed, 0 insertions, 83 deletions

diff --git a/fallback.c b/fallback.c
index c5e35e5a..5a4786d6 100644
--- a/fallback.c
+++ b/fallback.c
@@ -94,89 +94,6 @@ FindSubDevicePath(EFI_DEVICE_PATH *In, UINT8 Type, UINT8 SubType,
 	return EFI_NOT_FOUND;
 }
 
-static EFI_STATUS
-get_file_size(EFI_FILE_HANDLE fh, UINTN *retsize)
-{
-	EFI_STATUS efi_status;
-	void *buffer = NULL;
-	UINTN bs = 0;
-
-	/* The API here is "Call it once with bs=0, it fills in bs,
-	 * then allocate a buffer and ask again to get it filled. */
-	efi_status = fh->GetInfo(fh, &EFI_FILE_INFO_GUID, &bs, NULL);
-	if (EFI_ERROR(efi_status) && efi_status != EFI_BUFFER_TOO_SMALL)
-		return efi_status;
-	if (bs == 0)
-		return EFI_SUCCESS;
-
-	buffer = AllocateZeroPool(bs);
-	if (!buffer) {
-		console_print(L"Could not allocate memory\n");
-		return EFI_OUT_OF_RESOURCES;
-	}
-	efi_status = fh->GetInfo(fh, &EFI_FILE_INFO_GUID, &bs, buffer);
-	/* This checks *either* the error from the first GetInfo, if it isn't
-	 * the EFI_BUFFER_TOO_SMALL we're expecting, or the second GetInfo
-	 * call in *any* case. */
-	if (EFI_ERROR(efi_status)) {
-		console_print(L"Could not get file info: %r\n", efi_status);
-		if (buffer)
-			FreePool(buffer);
-		return efi_status;
-	}
-	EFI_FILE_INFO *fi = buffer;
-	*retsize = fi->FileSize;
-	FreePool(buffer);
-	return EFI_SUCCESS;
-}
-
-EFI_STATUS
-read_file(EFI_FILE_HANDLE fh, CHAR16 *fullpath, CHAR16 **buffer, UINT64 *bs)
-{
-	EFI_FILE_HANDLE fh2;
-	EFI_STATUS efi_status;
-
-	efi_status = fh->Open(fh, &fh2, fullpath, EFI_FILE_READ_ONLY, 0);
-	if (EFI_ERROR(efi_status)) {
-		console_print(L"Couldn't open \"%s\": %r\n", fullpath, efi_status);
-		return efi_status;
-	}
-
-	UINTN len = 0;
-	CHAR16 *b = NULL;
-	efi_status = get_file_size(fh2, &len);
-	if (EFI_ERROR(efi_status)) {
-		console_print(L"Could not get file size for \"%s\": %r\n",
-			      fullpath, efi_status);
-		fh2->Close(fh2);
-		return efi_status;
-	}
-
-	if (len > 1024 * PAGE_SIZE) {
-		fh2->Close(fh2);
-		return EFI_BAD_BUFFER_SIZE;
-	}
-
-	b = AllocateZeroPool(len + 2);
-	if (!b) {
-		console_print(L"Could not allocate memory\n");
-		fh2->Close(fh2);
-		return EFI_OUT_OF_RESOURCES;
-	}
-
-	efi_status = fh->Read(fh, &len, b);
-	if (EFI_ERROR(efi_status)) {
-		FreePool(b);
-		fh2->Close(fh2);
-		console_print(L"Could not read file: %r\n", efi_status);
-		return efi_status;
-	}
-	*buffer = b;
-	*bs = len;
-	fh2->Close(fh2);
-	return EFI_SUCCESS;
-}
-
 EFI_STATUS
 make_full_path(CHAR16 *dirname, CHAR16 *filename, CHAR16 **out, UINT64 *outlen)
 {