Implement UninstallMultipleProtocolInterfaces. The efi_uninstall_multipled_protocol_interfaces tries to uninstall protocols one by one. If an error occurs all uninstalled protocols are reinstalled.
As the implementation efi_uninstall_protocol_interface is still incomplete the function will fail.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 40 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index f2f9e87635..f7e8367091 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1812,7 +1812,45 @@ static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( void *handle, ...) { EFI_ENTRY("%p", handle); - return EFI_EXIT(EFI_INVALID_PARAMETER); + + va_list argptr; + const efi_guid_t *protocol; + void *protocol_interface; + efi_status_t r = EFI_SUCCESS; + size_t i = 0; + + if (!handle) + return EFI_EXIT(EFI_INVALID_PARAMETER); + + va_start(argptr, handle); + for (;;) { + protocol = va_arg(argptr, efi_guid_t*); + if (!protocol) + break; + protocol_interface = va_arg(argptr, void*); + r = EFI_CALL(efi_uninstall_protocol_interface( + handle, protocol, + protocol_interface)); + if (r != EFI_SUCCESS) + break; + i++; + } + va_end(argptr); + if (r == EFI_SUCCESS) + return EFI_EXIT(r); + + /* If an error occurred undo all changes. */ + va_start(argptr, handle); + for (; i; --i) { + protocol = va_arg(argptr, efi_guid_t*); + protocol_interface = va_arg(argptr, void*); + EFI_CALL(efi_install_protocol_interface(&handle, protocol, + EFI_NATIVE_INTERFACE, + protocol_interface)); + } + va_end(argptr); + + return EFI_EXIT(r); }
/*