On Mon, Jun 21, 2021 at 12:49:01PM -0400, Theodore Ts'o wrote:
> Some older kernels support ext4 file systems with encryption enabled,
> and with casefold enabled, but not file systems have both encryption
> *and* casefolding enabled. On those kernels, generic/556 will fail.
> Fortunately, we can test if ext4 supports encrypted casefold via the
> presence of /sys/fs/ext4/features/encrypted_casefold.
>
> Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
> ---
> common/casefold | 17 +++++++++++++++++
> tests/generic/556 | 1 +
> 2 files changed, 18 insertions(+)
>
> diff --git a/common/casefold b/common/casefold
> index 9172d818..7b76b986 100644
> --- a/common/casefold
> +++ b/common/casefold
> @@ -43,6 +43,23 @@ _require_scratch_casefold()
> _require_command "$LSATTR_PROG" lsattr
> }
>
> +_require_encrypted_casefold ()
> +{
> + case $FSTYP in
> + ext4)
> + if test ! -f /sys/fs/ext4/features/casefold ; then
> + _notrun "casefolding not supported"
> + fi
> + if test ! -f /sys/fs/ext4/features/encryption ; then
> + _notrun "file system encryption not supported"
> + fi
> + if test ! -f /sys/fs/ext4/features/encrypted_casefold ; then
> + _notrun "encrypted casefolding not supported"
Dumb question: Are there kernels that support encrypted casefold but not
those two components separately?
--D
> + fi
> + ;;
> + esac
> +}
> +
> _scratch_mkfs_casefold()
> {
> case $FSTYP in
> diff --git a/tests/generic/556 b/tests/generic/556
> index 3145188c..7916a08e 100755
> --- a/tests/generic/556
> +++ b/tests/generic/556
> @@ -16,6 +16,7 @@ status=1 # failure is thea default
> . ./common/attr
>
> _supported_fs generic
> +_require_encrypted_casefold
> _require_scratch_nocheck
> _require_scratch_casefold
> _require_symlinks
> --
> 2.31.0
>
