NAME
cryptsetup-fvault2Dump - dump the header information of a FVAULT2 (FileVault2 compatible) deviceSYNOPSIS
cryptsetup fvault2Dump [<options>] <device>DESCRIPTION
Dump the header information of a FVAULT2 (FileVault2 compatible) device.OPTIONS
--key-file, -d nameRead the passphrase from file.
If the name given is "-", then the passphrase will be read from stdin.
In this case, reading will not stop at newline characters.
See section NOTES ON PASSPHRASE PROCESSING in cryptsetup(8) for
more information.
Skip value bytes at the beginning of
the key file.
Read a maximum of value bytes from the
key file. The default is to read the whole file up to the compiled-in maximum
that can be queried with --help. Supplying more data than the compiled-in
maximum aborts the operation.
This option is useful to cut trailing newlines, for example. If --keyfile-offset
is also given, the size count starts after the offset.
Use a volume key stored in a file. The volume
key is stored in a file instead of being printed out to standard output.
Print the volume key in the displayed
information. Use with care, as the volume key can be used to bypass the
passphrases, see also option --volume-key-file.
The number of seconds to wait before timeout
on passphrase input via terminal. It is relevant every time a passphrase is
asked. It has no effect if used in conjunction with --key-file.
This option is useful when the system should not stall if the user does not
input a passphrase, e.g. during boot. The default is a value of 0 seconds,
which means to wait forever.
Suppresses all confirmation questions. Use
with care!
If the --verify-passphrase option is not specified, this option also switches
off the passphrase verification.
Run in debug mode with full diagnostic logs.
Debug output lines are always prefixed by #.
If --debug-json is used, additional LUKS2 JSON data structures are
printed.
Show the program version.
Show short option help.
Show help text and default parameters.
REPORTING BUGS
Report bugs at cryptsetup <[email protected]>mailing or in Issues project section <https://gitlab.com/cryptsetup/cryptsetup/-/issues/new>.SEE ALSO
Cryptsetup FAQ <https://gitlab.com/cryptsetup/cryptsetup/wikis/FrequentlyAskedQuestions>CRYPTSETUP
Part of cryptsetup project <https://gitlab.com/cryptsetup/cryptsetup/>.2023-12-18 | cryptsetup 2.6.1 |