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docs: Add documentation on keyfile option to cryptomount

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Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Glenn Washburn 2022-05-20 14:32:19 -05:00 committed by Daniel Kiper
parent af81ecede1
commit d46e65328e
1 changed files with 9 additions and 5 deletions
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docs/grub.texi
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@ -4489,11 +4489,15 @@ Alias for @code{hashsum --hash crc32 arg @dots{}}. See command @command{hashsum}
@node cryptomount
@subsection cryptomount
@deffn Command cryptomount [@option{-p} password] device|@option{-u} uuid|@option{-a}|@option{-b}
Setup access to encrypted device. If @option{-p} is not given, a passphrase
is requested interactively. Otherwise, the given @var{password} will be used and
no passphrase will be requested interactively.
Option @var{device} configures specific grub device
@deffn Command cryptomount [ [@option{-p} password] | [@option{-k} keyfile [@option{-O} keyoffset] [@option{-S} keysize] ] ] device|@option{-u} uuid|@option{-a}|@option{-b}
Setup access to encrypted device. A passphrase will be requested interactively,
if neither the @option{-p} nor @option{-k} options are given. The option
@option{-p} can be used to supply a passphrase (useful for scripts).
Alternatively the @option{-k} option can be used to supply a keyfile with
options @option{-O} and @option{-S} optionally supplying the offset and size,
respectively, of the key data in the given key file.
Argument @var{device} configures specific grub device
(@pxref{Naming convention}); option @option{-u} @var{uuid} configures device
with specified @var{uuid}; option @option{-a} configures all detected encrypted
devices; option @option{-b} configures all geli containers that have boot flag set.