Link to previous cover letter: https://lore.kernel.org/linux-integrity/1540193596.3202.7.camel@xxxxxxxxxxxxxxxxxxxxx/ This is marked v6 instead of v5 because I did a v5 after feedback on v4 but didn't get around to posting it and then had to rework the whole of the kernel space handling while I was on holiday. I also added the documentation of how the whole thing works and the rationale for doing it in tpm-security.rst (patch 11). The main reason for doing this now is so we have something to discuss at Plumbers. The new patch set implements the various splits requested, but the main changes are that the kernel space is gone and is replaced by a context save and restore of the generated null seed. This is easier to handle than a full kernel space given the new threading for TPM spaces, but conceptually it is still very like a space. I've also made whether integrity and encryption is turned on a Kconfig option. James --- James Bottomley (12): tpm-buf: move from static inlines to real functions tpm-buf: add handling for TPM2B types tpm-buf: add cursor based functions for response parsing tpm2-space: export the context save and load commands tpm2-sessions: Add full HMAC and encrypt/decrypt session handling tpm-buf: add tpm_buf_parameters() tpm2: add hmac checks to tpm2_pcr_extend() tpm2: add session encryption protection to tpm2_get_random() trusted keys: Add session encryption protection to the seal/unseal path tpm: add the null key name as a tpm2 sysfs variable Documentation: add tpm-security.rst tpm2-sessions: NOT FOR COMMITTING add sessions testing Documentation/security/tpm/tpm-security.rst | 204 +++++ drivers/char/tpm/Kconfig | 11 + drivers/char/tpm/Makefile | 4 + drivers/char/tpm/tpm-buf.c | 202 +++++ drivers/char/tpm/tpm-chip.c | 1 + drivers/char/tpm/tpm-sysfs.c | 27 +- drivers/char/tpm/tpm.h | 117 +-- drivers/char/tpm/tpm2-cmd.c | 202 +++-- drivers/char/tpm/tpm2-sessions-test.c | 795 ++++++++++++++++++ drivers/char/tpm/tpm2-sessions.c | 1204 +++++++++++++++++++++++++++ drivers/char/tpm/tpm2-sessions.h | 138 +++ drivers/char/tpm/tpm2-space.c | 8 +- include/linux/tpm.h | 29 + 13 files changed, 2787 insertions(+), 155 deletions(-) create mode 100644 Documentation/security/tpm/tpm-security.rst create mode 100644 drivers/char/tpm/tpm-buf.c create mode 100644 drivers/char/tpm/tpm2-sessions-test.c create mode 100644 drivers/char/tpm/tpm2-sessions.c create mode 100644 drivers/char/tpm/tpm2-sessions.h -- 2.16.4
