Hi Heinrich, 2021年6月3日(木) 15:14 Heinrich Schuchardt <xypron.g...@gmx.de>: [..] > > If a volume or file is read only the UEFI spec requires to report this > in EFI_FILE_PROTOCOL.GetInfo().
Yes. > > On partition level we have the following deficiencies in U-Boot: > > * we cannot (re-)mount a partition read-only > * we cannot determine if a partition is read-only Hmm, but I think the filesystem driver itself defined it in fstype_info. Thus we can check it as below. fsinfo = fs_get_info(fs_get_type()); if (fsinfo->write == fs_write_unsupported) // then set the volume readonly BTW, it seems fsinfo->opendir and readdir are also required for EFI_FILE_PROTOCOL, unless it, UEFI application can not follow the directory tree. Hmm. > * we can neither read nor write the volume label > * we cannot determine the free space. > > The current implementation of the FAT driver does not support reading > attributes and dates. I have started looking into what is needed in the > FAT driver. > https://github.com/xypron/u-boot-patches/blob/bfe483ed97978678b124f8fe579682aab6e3e9d8/patch-efi-next.sh#L91 > But it is not ready for submission. Ah, that's great! I would like to test it. Thank you, -- Masami Hiramatsu
