On Mon, Nov 13, 2023 at 10:50 PM Heinrich Schuchardt <heinrich.schucha...@canonical.com> wrote: > > It is unclear to developers why efi_var_from_file() returns EFI_SUCCESS if > file ubootefi.var is missing or corrupted. Improve the description. > > Reported-by: Weizhao Ouyang <o451686...@gmail.com> > Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com> > --- > lib/efi_loader/efi_var_file.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/lib/efi_loader/efi_var_file.c b/lib/efi_loader/efi_var_file.c > index 62e071bd83..dbf76f93de 100644 > --- a/lib/efi_loader/efi_var_file.c > +++ b/lib/efi_loader/efi_var_file.c > @@ -204,8 +204,11 @@ efi_status_t efi_var_restore(struct efi_var_file *buf, > bool safe) > * File ubootefi.var is read from the EFI system partitions and the variables > * stored in the file are created. > * > - * In case the file does not exist yet or a variable cannot be set > EFI_SUCCESS > - * is returned. > + * On first boot the file ubootefi.var does not exist yet. This is if why we > + * must return EFI_SUCCESS in this case. > + * > + * If the variable file is corrupted, e.g. incorrect CRC32, we do not want to > + * stop the boot process. We deliberately return EFI_SUCCESS in this case, > too.
Reviewed-by: Weizhao Ouyang <o451686...@gmail.com> > * > * Return: status code > */ > -- > 2.40.1 >
