Add more context to possibly failing kernel keyring routines
in log debug output.
Mostly split debug output for errors while trying to search the kernel
key by description and errors while trying to read/unlink the key
by its id.
It makes key verification easier and also allows digest
verification for keys not assigned to device segment
(unbound keys) for more keyslot context types (tokens).
LUKS2 devices with configured HW OPAL encryption (any configuration)
get activated with private dm uuid prefix LUKS2-OPAL so that we
can properly detect devices with HW OPAL encryption even with
missing LUKS2 header (detached header). Internally LUKS2-OPAL
prefix matches LUKS2 device type.
Move all metadata size and data offset calculations
logic away from LUKS2_generate_hdr. The function
was meant to generate solely LUKS2 header on disk json
format.
The aim is to have all logic related data offset and metadata
size in one place available to be calculated in advance so
that we can easily extend the code.
Benchmark for memory-hard KDF is tricky, seems that relying
on maximum half of physical memory is not enough.
Let's allow only free physical available space if there is no swap.
This should not cause changes on normal systems, at least.
System FIPS mode check is no longer dependent on /etc/system-fips
file. The change should be compatible with older distributions since
we now depend on crypto backend internal routine.
This commit affects only FIPS enabled systems (with FIPS enabled
builds). In case this causes any regression in current distributions
feel free to drop the patch.
For reference see https://bugzilla.redhat.com/show_bug.cgi?id=2080516
Starting with GCC10 and LTO enabled, current symbols
versioning hack does not work anymore. This patch
reflects on that and should be compatible with older
compilers that does not support __attribute__((symver))
yet.
Inspired by following code:
https://github.com/linux-rdma/rdma-core/blob/master/util/symver.h
To avoid confusion, use just one lib include and specify sub-directories
for format inclusions.
This should also help some analysis tools to find proper includes.
LUKS2 and other device types allow stacking of dm devices
underneath public top level device.
The new type identifies clearly those private devices in respective
device stack so that they can be easily removed while removing
top level public device.
Switch LUKS2 reencryption device stack to use SUBDEV type immmediately
for hotzone and overlay devices. Other devices will follow in later
releases.
It's useful to reencrypt only initial device part only.
For example with golden image reencryption it may be useful
to reencrypt only first X bytes of device because we know
the rest of device is empty.
This is very ugly workaround for situation when multiple
devices are being activated in parallel (systemd crypttab)
and system instead of returning ENOMEM use OOM killer
to randomly kill processes.
This flag is intended to be used only in very specific situations.
crypt_drop_keyring_key function allow to drop all keys in keyring
assocatiated with passed volume key list.
crypt_drop_keyring_key_by_description is used to drop independent key.
