This is done to break a circular DEPENDency as we want to
send UMA stats from tcsd. Without this, metrics depends on
vboot_reference which depends on trousers which depends on
metrics. Technically the vboot_reference dependency on trousers
is header-file only, but we can't cope with that.
BUG=chromium:481552
TEST=compiled with emerge-<something> vboot_reference
BRANCH=none
Change-Id: Iea5c0c39bb70977c9d375e63ea607687debe9f9f
Reviewed-on: https://chromium-review.googlesource.com/267744
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Luigi Semenzato <semenzato@chromium.org>
Tested-by: Luigi Semenzato <semenzato@chromium.org>
Since the "ownership" permament flag does not indicate if the TPM is
currently owned, the state of TPM Ownership must be read via a Capability
read of TPM_CAP_PROP_OWNER. This adds the "getownership" function.
BUG=chromium-os:22172
TEST=x86-alex build & manual test
Change-Id: I2fc9e933e891ba40190d008436b22496dced1c93
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/24784
Reviewed-by: Will Drewry <wad@chromium.org>
Add ability to report a single PCR value via the tpmc utility. Using
/sys/devices/platform/tpm_tis/pcrs is too slow, since it reads all
PCRs before returning. Anything wanting to read PCR0 on a time-critical
path needs maximum speed.
BUG=chromium-os:22172
TEST=install and test x86-alex.
Change-Id: I2d450961d33fa314d54b909135a74aa756279ec6
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/13891
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
Do not directly manipulate global structs. Work on the local copy instead.
In firmware-land, globals are a bad idea.
Review URL: http://codereview.chromium.org/3027011
