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.TH "SYSTEMD\-CRYPTSETUP\-GENERATOR" "8" "" "systemd 215" "systemd-cryptsetup-generator"
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.SH "NAME"
systemd-cryptsetup-generator \- Unit generator for /etc/crypttab
.SH "SYNOPSIS"
.PP
/lib/systemd/system\-generators/systemd\-cryptsetup\-generator
.SH "DESCRIPTION"
.PP
systemd\-cryptsetup\-generator
is a generator that translates
/etc/crypttab
into native systemd units early at boot and when configuration of the system manager is reloaded\&. This will create
\fBsystemd-cryptsetup@.service\fR(8)
units as necessary\&.
.PP
systemd\-cryptsetup\-generator
implements the
\m[blue]\fBgenerator specification\fR\m[]\&\s-2\u[1]\d\s+2\&.
.SH "KERNEL COMMAND LINE"
.PP
systemd\-cryptsetup\-generator
understands the following kernel command line parameters:
.PP
\fIluks=\fR, \fIrd\&.luks=\fR
.RS 4
Takes a boolean argument\&. Defaults to
"yes"\&. If
"no", disables the generator entirely\&.
\fIrd\&.luks=\fR
is honored only by initial RAM disk (initrd) while
\fIluks=\fR
is honored by both the main system and the initrd\&.
.RE
.PP
\fIluks\&.crypttab=\fR, \fIrd\&.luks\&.crypttab=\fR
.RS 4
Takes a boolean argument\&. Defaults to
"yes"\&. If
"no", causes the generator to ignore any devices configured in
/etc/crypttab
(\fIluks\&.uuid=\fR
will still work however)\&.
\fIrd\&.luks\&.crypttab=\fR
is honored only by initial RAM disk (initrd) while
\fIluks\&.crypttab=\fR
is honored by both the main system and the initrd\&.
.RE
.PP
\fIluks\&.uuid=\fR, \fIrd\&.luks\&.uuid=\fR
.RS 4
Takes a LUKS superblock UUID as argument\&. This will activate the specified device as part of the boot process as if it was listed in
/etc/fstab\&. This option may be specified more than once in order to set up multiple devices\&.
\fIrd\&.luks\&.uuid=\fR
is honored only by initial RAM disk (initrd) while
\fIluks\&.uuid=\fR
is honored by both the main system and the initrd\&.
.sp
If /etc/crypttab contains entries with the same UUID, then the options for this entry will be used\&.
.sp
If /etc/crypttab exists, only those UUID specified on the kernel command line will be activated in the initrd or the real root\&.
.RE
.PP
\fIluks\&.options=\fR, \fIrd\&.luks\&.options=\fR
.RS 4
Takes a LUKS super block UUID followed by an \*(Aq=\*(Aq and a string of options separated by commas as argument\&. This will override the options for the given UUID\&.
.sp
If only a list of options, without an UUID, is specified, they apply to any UUIDs not specified elsewhere, and without an entry in /etc/crypttab\&.
.sp
\fIrd\&.luks\&.options=\fR
is honored only by initial RAM disk (initrd) while
\fIluks\&.options=\fR
is honored by both the main system and the initrd\&.
.RE
.PP
\fIluks\&.key=\fR, \fIrd\&.luks\&.key=\fR
.RS 4
Takes a password file as argument\&.
.sp
For those entries specified with
\fIrd\&.luks\&.uuid=\fR
or
\fIluks\&.uuid=\fR, the password file will be set to the password file specified by
\fIrd\&.luks\&.key=\fR
or
\fIluks\&.key\fR
.sp
\fIrd\&.luks\&.key=\fR
is honored only by initial RAM disk (initrd) while
\fIluks\&.key=\fR
is honored by both the main system and the initrd\&.
.RE
.SH "SEE ALSO"
.PP
\fBsystemd\fR(1),
\fBcrypttab\fR(5),
\fBsystemd-cryptsetup@.service\fR(8),
\fBcryptsetup\fR(8),
\fBsystemd-fstab-generator\fR(8)
.SH "NOTES"
.IP " 1." 4
generator specification
.RS 4
\%http://www.freedesktop.org/wiki/Software/systemd/Generators
.RE