From e7c3cd6b67d87383fa48b41c1b4037b75ceab597 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sun, 5 May 2019 11:24:53 +0200
Subject: [PATCH] efi_loader: HandleProtocol parameter checks
HandleProtocol() and OpenProtocol() have to return EFI_UNSUPPORTED if the
protocol is not installed on the handle.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
lib/efi_loader/efi_boottime.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index ab299aa17f..6d86dafc16 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -2636,8 +2636,15 @@ static efi_status_t EFIAPI efi_open_protocol
}
r = efi_search_protocol(handle, protocol, &handler);
- if (r != EFI_SUCCESS)
+ switch (r) {
+ case EFI_SUCCESS:
+ break;
+ case EFI_NOT_FOUND:
+ r = EFI_UNSUPPORTED;
goto out;
+ default:
+ goto out;
+ }
r = efi_protocol_open(handler, protocol_interface, agent_handle,
controller_handle, attributes);
--
2.39.5