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test_firmware: Test platform fw loading on non-EFI systems

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On non-EFI systems, it wasn't possible to test the platform firmware
loader because it will have never set "checked_fw" during __init.
Instead, allow the test code to override this check. Additionally split
the declarations into a private symbol namespace so there is greater
enforcement of the symbol visibility.

Fixes: 548193cba2 ("test_firmware: add support for firmware_request_platform")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20200909225354.3118328-1-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kees Cook
2020-09-09 15:53:54 -07:00
committed by Greg Kroah-Hartman
parent 1c30474826
commit baaabecfc8
3 changed files with 16 additions and 9 deletions
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6
include/linux/efi_embedded_fw.h
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@@ -8,8 +8,8 @@
#define EFI_EMBEDDED_FW_PREFIX_LEN 8
/*
* This struct and efi_embedded_fw_list are private to the efi-embedded fw
* implementation they are in this header for use by lib/test_firmware.c only!
* This struct is private to the efi-embedded fw implementation.
* They are in this header for use by lib/test_firmware.c only!
*/
struct efi_embedded_fw {
struct list_head list;
@@ -18,8 +18,6 @@ struct efi_embedded_fw {
size_t length;
};
extern struct list_head efi_embedded_fw_list;
/**
* struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
* code to search for embedded firmwares.