Upcoming libtpms v0.10 and swtpm v0.10 will have TPM profile support that
allows to restrict a TPM's provided set of crypto algorithms and commands
and through which backwards compatibility and migration from newer versions
of libtpms to older ones (up to libtpms v0.9) is supported. For the latter
to work it is necessary that the user chooses the right ('null') profile.
This series adds support for passing a profile choice to swtpm_setup by
setting it in the domain XML using the <profile/> XML node. An optional
attribute 'remove_disabled' can be set in this node and accepts two values:
"check": test a few crypto algorithms (tdes, camellia, unpadded encryption,
and others) for whether they are currently disabled due to FIPS
mode on the host and remove these algorithms in the 'custom'
profile if they are disabled;
"fips-host": do not test but remove all the possibly disabled crypto
algorithms (from list above)
Also extend the documentation but point the user to swtpm and libtpms
documentation for further details.
Follow Deniel's suggestions there's now a PR for swtpm_setup to support
searching for profiles though a configurable local directory, distro
directory and if no profile could be found there (with appended
".json" suffix) it will fall back to try to use a built-in profile by
the provided name: https://github.com/stefanberger/swtpm/pull/918
Stefan
v3:
- 2/10: Adjustments to due rebase
- Applied Marc-André's R-b tags
- 10/10: Read back profile name from swtpm and adjust it in emulator defs
Stefan Berger (10):
conf: Move TPM emulator parameters into own struct
qemu: Pass virQEMUDriverConfig rather than some of its fields
util: Add parsing support for swtpm_setup's cmdarg-profile capability
conf: Define enum virDomainTPMProfileRemoveDisabled
schema: Extend schema for TPM emulator profile node
conf: Add support for profile parameter on TPM emulator in domain XML
docs: Add documentation for the TPM backend profile node
qemu: Extend swtpm_setup command line to set a profile by its name
qemu: Move adding of keys to swtpm command line into own function
qemu: Read the profile name after creation of TPM instance
docs/formatdomain.rst | 30 +++
src/conf/domain_conf.c | 43 +++++
src/conf/domain_conf.h | 35 ++--
src/conf/domain_validate.c | 7 +
src/conf/schemas/domaincommon.rng | 25 +++
src/conf/virconftypes.h | 2 +
src/qemu/qemu_extdevice.c | 5 +-
src/qemu/qemu_tpm.c | 310 ++++++++++++++++++++----------
src/qemu/qemu_tpm.h | 3 +-
src/util/virtpm.c | 2 +
src/util/virtpm.h | 2 +
tests/testutilsqemu.c | 1 +
12 files changed, 355 insertions(+), 110 deletions(-)
--
2.47.0
