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types from the official headers
Make sure that the sym_xyz function pointers have the types that the
functions we'll assign them have.
And of course, this found a number of incompatibilities right-away, in
particular in the bpf hookup.
(Doing this will trigger deprecation warnings from libbpf. I simply
turned them off locally now, since we are well aware of what we are
doing in that regard.)
There's one return type fix (bool → int), that actually matters I think,
as it might have created an incompatibility on some archs.
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Offline encryption can be done without mounting the luks device. For
now we still use loop devices to split out the partition we want to
write to but in a later commit we'll replace this with a regular file.
For offline encryption, we need to keep 2x the luks header size space
free at the end of the partition, so this means our encrypted partitions
will be 16M larger than before.
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This splits out the JSON parser used by the systemd-cryptsetup code.
This is preparation for later work to reuse it in the tpm2 cryptsetup
token module, which currently uses a separate but very similar parser
for the same data.
No change in behaviour.
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We warn when the operation fails, not when it succeeds. Hence this should be
"<do>_or_<handle failure>", not "<do>_and_<handle failure>". We *could* use
whatever convention we want, but rust and perl are rather consistent in using
the logical convention. We don't care about perl that much, but having a naming
convention inverted wrt. rust would be rather confusing.
Also, pretty much every implementation does similar steps, so add a nice
wrapper which combines opening of the library and loading of the symbols.
Also add missing sentinel attribute in dlopen_or_warn().
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homed: catch up with FIDO2 features in cryptsetup + other fixes
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dynamically
So far we only set the per-crypt_device log functions, but some
libcryptsetup calls we invoke without a crypt_device objects, and we
want those to redirect to our infra too.
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No need to benchmark pbkdf when asking for minimal values
anyway.
1000 iterations count is minimum for both LUKS1 and LUKS2
pbkdf2 keyslot parameters according to NIST SP 800-132, ch. 5.2.
Iterations count can not be lower than recommended minimum
when benchmark is disabled. The time_ms member is ignored with
benchmark disabled.
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New API added upstream:
https://gitlab.com/cryptsetup/cryptsetup/-/commit/8a12f6dc2c75f8fd0c4969fbdc421895eb418072
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Let's make libcryptsetup a dlopen() style dep for PID 1 (i.e. for
RootImage= and stuff), systemd-growfs and systemd-repart. (But leave to
be a regulra dep in systemd-cryptsetup, systemd-veritysetup and
systemd-homed since for them the libcryptsetup support is not auxiliary
but pretty much at the core of what they do.)
This should be useful for container images that want systemd in the
payload but don't care for the cryptsetup logic since dm-crypt and stuff
isn't available in containers anyway.
Fixes: #8249
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"crypt-util.c" is such a generic name, let's avoid that, in particular
as libc's/libcrypt's crypt() function is so generically named too that
one might thing this is about that. Let's hence be more precise, and
make clear that this is about cryptsetup, and nothing else.
We already had cryptsetup-util.[ch] in src/cryptsetup/ doing keyfile
management. To avoid the needless confusion, let's rename that file to
cryptsetup-keyfile.[ch].
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