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zkey: Add volume-type property to support LUKS2 volumes

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Allow to specify a volume-type for a key. This applies to all
associated volumes. The volume type can be either 'plain' or
'luks2'. New keys created will default to 'luks2', but existing
keys that do not have a volume-type property default to 'plain'
for compatibility reasons.

The volume type 'luks2' is only available when the define
HAVE_LUKS2_SUPPORT is set in the makefile. This is set only
when libcryptsetup version 2.0.3 or newer is available
at build time. If the define is not set, the volume-type
option is not available to the user, and the volume-type of
a key defaults to 'plain'.

Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Ingo Franzki
2018-06-04 11:29:12 +02:00
committed by Jan Höppner
parent 512b47c004
commit 1f07a41d5a
5 changed files with 626 additions and 203 deletions
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zkey/Makefile
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@@ -12,6 +12,7 @@ ifneq (${HAVE_CRYPTSETUP2},0)
ifneq (${HAVE_JSONC},0)
BUILD_TARGETS += zkey-cryptsetup
INSTALL_TARGETS += install-zkey-cryptsetup
CPPFLAGS += -DHAVE_LUKS2_SUPPORT
else
BUILD_TARGETS += zkey-cryptsetup-skip-jsonc
INSTALL_TARGETS += zkey-cryptsetup-skip-jsonc