linux-kernel - [PATCH RFC v4 0/5] RFC: in-kernel resource manager

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Date:   Mon, 23 Jan 2017 01:44:28 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     tpmdd-devel@...ts.sourceforge.net
Cc:     linux-security-module@...r.kernel.org,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH RFC v4 0/5] RFC: in-kernel resource manager

This patch set adds support for TPM spaces that provide a context
for isolating and swapping transient objects. The content does
not yet include support for policy and HMAC sessions.

There's a test script for trying out TPM spaces in

  git://git.infradead.org/users/jjs/tpm2-scripts.git

A simple smoke test can be run by

  sudo python -m unittest -v tpm2_smoke.SpaceTest   

v2:
Changed to James' proposal of API. I did not make any other changes
except split core TPM space code its own patch because I want to find
consensus on the API before polishing the corners. Thus, this version
also carries the RFC tag. I have not yet locked in my standpoint whether
ioctl or a device file is a better deal.

v3:
- Check TPM return code in tpm_map_response.
- Reference tracking for /dev/tpms0.
- clear_bit(is_open) was removed from tpm-dev.c. Added it back.
- Use response length as the buffer size limit in tpm2_commit_space.
- This version now passes again my smoke tests.

v4:
- Lots of small bug fixes and clean ups.
- Quirk for TPM2_CC_FlushHandle

James Bottomley (2):
  tpm: split out tpm-dev.c into tpm-dev.c and tpm-common-dev.c
  tpm2: expose spaces via a device link /dev/tpms<n>

Jarkko Sakkinen (3):
  tpm: validate TPM 2.0 commands
  tpm: export tpm2_flush_context_cmd
  tpm: infrastructure for TPM spaces

 drivers/char/tpm/Makefile         |   2 +-
 drivers/char/tpm/tpm-chip.c       |  78 ++++++++-
 drivers/char/tpm/tpm-dev-common.c | 145 ++++++++++++++++
 drivers/char/tpm/tpm-dev.c        | 140 ++--------------
 drivers/char/tpm/tpm-dev.h        |  27 +++
 drivers/char/tpm/tpm-interface.c  | 113 +++++++++----
 drivers/char/tpm/tpm-sysfs.c      |   2 +-
 drivers/char/tpm/tpm.h            |  57 ++++++-
 drivers/char/tpm/tpm2-cmd.c       | 150 ++++++++++++-----
 drivers/char/tpm/tpm2-space.c     | 336 ++++++++++++++++++++++++++++++++++++++
 drivers/char/tpm/tpms-dev.c       |  65 ++++++++
 11 files changed, 903 insertions(+), 212 deletions(-)
 create mode 100644 drivers/char/tpm/tpm-dev-common.c
 create mode 100644 drivers/char/tpm/tpm-dev.h
 create mode 100644 drivers/char/tpm/tpm2-space.c
 create mode 100644 drivers/char/tpm/tpms-dev.c

-- 
2.9.3