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SubjectRe: [PATCH v2] Kernel selftests: TPM2: upgrade TPM2 tests from Python 2 to Python 3
Hi Jarkk,
Thanks for your comments!
My feedback is as below.

BR.

On 2020-06-23 at 00:47:39 +0300, Jarkko Sakkinen wrote:
> On Tue, Jun 23, 2020 at 12:46:18AM +0300, Jarkko Sakkinen wrote:
> > On Thu, Jun 18, 2020 at 04:15:02PM +0800, Pengfei Xu wrote:
> > > Python 2 is no longer supported by the Python upstream project, so
> > > upgrade TPM2 tests to Python 3.
> > >
> > > Signed-off-by: Pengfei Xu <pengfei.xu@intel.com>
> >
> > Use "selftests: tpm: <short summary>".
> >

Will do.

> > > ---
> > > tools/testing/selftests/tpm2/test_smoke.sh | 4 +-
> > > tools/testing/selftests/tpm2/test_space.sh | 2 +-
> > > tools/testing/selftests/tpm2/tpm2.py | 68 ++++++++++++++--------
> > > tools/testing/selftests/tpm2/tpm2_tests.py | 24 +++++---
> > > 4 files changed, 61 insertions(+), 37 deletions(-)
> > >
> > > diff --git a/tools/testing/selftests/tpm2/test_smoke.sh b/tools/testing/selftests/tpm2/test_smoke.sh
> > > index 663062701d5a..d05467f6d258 100755
> > > --- a/tools/testing/selftests/tpm2/test_smoke.sh
> > > +++ b/tools/testing/selftests/tpm2/test_smoke.sh
> > > @@ -6,8 +6,8 @@ ksft_skip=4
> > >
> > > [ -f /dev/tpm0 ] || exit $ksft_skip
> > >
> > > -python -m unittest -v tpm2_tests.SmokeTest
> > > -python -m unittest -v tpm2_tests.AsyncTest
> > > +python3 -m unittest -v tpm2_tests.SmokeTest
> > > +python3 -m unittest -v tpm2_tests.AsyncTest
> > >
> > > CLEAR_CMD=$(which tpm2_clear)
> > > if [ -n $CLEAR_CMD ]; then
> > > diff --git a/tools/testing/selftests/tpm2/test_space.sh b/tools/testing/selftests/tpm2/test_space.sh
> > > index 36c9d030a1c6..151c64e8ee9f 100755
> > > --- a/tools/testing/selftests/tpm2/test_space.sh
> > > +++ b/tools/testing/selftests/tpm2/test_space.sh
> > > @@ -6,4 +6,4 @@ ksft_skip=4
> > >
> > > [ -f /dev/tpmrm0 ] || exit $ksft_skip
> > >
> > > -python -m unittest -v tpm2_tests.SpaceTest
> > > +python3 -m unittest -v tpm2_tests.SpaceTest
> > > diff --git a/tools/testing/selftests/tpm2/tpm2.py b/tools/testing/selftests/tpm2/tpm2.py
> > > index d0fcb66a88a6..b0ccc1499c53 100644
> > > --- a/tools/testing/selftests/tpm2/tpm2.py
> > > +++ b/tools/testing/selftests/tpm2/tpm2.py
> > > @@ -247,14 +247,18 @@ class ProtocolError(Exception):
> > > class AuthCommand(object):
> > > """TPMS_AUTH_COMMAND"""
> > >
> > > - def __init__(self, session_handle=TPM2_RS_PW, nonce='', session_attributes=0,
> > > - hmac=''):
> > > + def __init__(self, session_handle=TPM2_RS_PW, nonce=''.encode(),
> > > + session_attributes=0, hmac=''.encode()):
> > > + if not isinstance(nonce, bytes):
> > > + nonce = nonce.encode()
> > > + if not isinstance(hmac, bytes):
> > > + hmac = hmac.encode()
> >
> > This looks messy. Please, instead
> >
> > def __init__(self, session_handle=TPM2_RS_PW, nonce=bytes(),
> > session_attributes=0, hmac=bytes()):
> > self.session_handle = session_handle
> > self.nonce = nonce
> > self.session_attributes = session_attributes
> >
> > Applies also to other places.
>
> I.e. use '.encode()' in the call site.
>

I tried to use bytes(parm, encoding='UTF-8') way, it met the situation
that sometimes parm is string, sometimes parm is bytes.
And it's better we could convert all types value to bytes in
__init__ function.

Could we modify it as below:
def ConvertToBytes(parm):
if not isinstance(parm, bytes):
parm = parm.encode()
return parm

class AuthCommand(object):
"""TPMS_AUTH_COMMAND"""

def __init__(self, session_handle=TPM2_RS_PW, nonce='',
session_attributes=0, hmac=''):
self.session_handle = session_handle
self.nonce = ConvertToBytes(nonce)
self.session_attributes = session_attributes
self.hmac = ConvertToBytes(hmac)

Thanks!

> /Jarkko

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