cryptsetup-generator: introduce basic keydev support (#1656869) #251
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Dracut has a support for unlocking encrypted drives with keyfile stored
on the external drive. This support is included in the generated initrd
only if systemd module is not included.
When systemd is used in initrd then attachment of encrypted drives is
handled by systemd-cryptsetup tools. Our generator has support for
keyfile, however, it didn't support keyfile on the external block
device (keydev).
This commit introduces basic keydev support. Keydev can be specified per
luks.uuid on the kernel command line. Keydev is automatically mounted
during boot and we look for keyfile in the keydev
mountpoint (i.e. keyfile path is prefixed with the keydev mount point
path). After crypt device is attached we automatically unmount
where keyfile resides.
Example:
rd.luks.key=70bc876b-f627-4038-9049-3080d79d2165=/key:LABEL=KEYDEV
(cherry-picked from commit 70f5f48)
Resolves: #1656869
We are not the ones receiving an error here, but the ones generating it, hence we shouldn't show it with %m, that's just confusing, as it suggests we received an error from some other call. (cherry-picked from commit 2abe646) Related: #1656869
…exists (cherry-picked from commit 579875b) Related: #1656869
…tion For example, <luks.uuid>=/keyfile:LABEL="KEYFILE FS" previously wouldn't work, because we truncated label at the first whitespace character, i.e. LABEL="KEYFILE". (cherry-picked from commit 7949dfa) Related: #1656869
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