diff options
Diffstat (limited to 'shim.c')
| -rw-r--r-- | shim.c | 32 |
1 files changed, 32 insertions, 0 deletions
@@ -2317,6 +2317,24 @@ get_load_option_optional_data(UINT8 *data, UINTN data_size, return EFI_SUCCESS; } +static int is_our_path(EFI_LOADED_IMAGE *li, CHAR16 *path, UINTN len) +{ + CHAR16 *dppath = NULL; + int ret = 1; + + dppath = DevicePathToStr(li->FilePath); + if (!dppath) + return 0; + + Print(L"dppath: %s\n", dppath); + Print(L"path: %s\n", path); + if (StrnCaseCmp(dppath, path, len)) + ret = 0; + + FreePool(dppath); + return ret; +} + /* * Check the load options to specify the second stage loader */ @@ -2486,6 +2504,20 @@ EFI_STATUS set_second_stage (EFI_HANDLE image_handle) return EFI_SUCCESS; /* + * And then I found a version of BDS that gives us our own path in + * LoadOptions: + +77162C58 5c 00 45 00 46 00 49 00 |\.E.F.I.| +77162C60 5c 00 42 00 4f 00 4f 00 54 00 5c 00 42 00 4f 00 |\.B.O.O.T.\.B.O.| +77162C70 4f 00 54 00 58 00 36 00 34 00 2e 00 45 00 46 00 |O.T.X.6.4...E.F.| +77162C80 49 00 00 00 |I...| + + * which is just cruel... So yeah, just don't use it. + */ + if (strings == 1 && is_our_path(li, start, loader_len)) + return EFI_SUCCESS; + + /* * Set up the name of the alternative loader and the LoadOptions for * the loader */ |