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cryptsetup-generator: Add support for header device in crypttab

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This commit is contained in:
Ondrej Kozina 2020-08-24 12:54:14 +02:00
parent a8574d0055
commit 13445d9775
2 changed files with 22 additions and 3 deletions
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7
man/crypttab.xml
View File

@ -112,7 +112,12 @@
relevant for LUKS devices. See
<citerefentry project='die-net'><refentrytitle>cryptsetup</refentrytitle><manvolnum>8</manvolnum></citerefentry>
for possible values and the default value of this
option.</para></listitem>
option.</para>
<para>Optionally, the path may be followed by <literal>:</literal> and an fstab device specification
(e.g. starting with <literal>UUID=</literal> or similar); in which case, the path is relative to the
device file system root. The device gets mounted automatically for LUKS device activation duration only.
</para></listitem>
</varlistentry>
<varlistentry>

18
src/cryptsetup/cryptsetup-generator.c
View File

@ -789,7 +789,8 @@ static int add_crypttab_devices(void) {
}
for (;;) {
_cleanup_free_ char *line = NULL, *name = NULL, *device = NULL, *keyspec = NULL, *options = NULL, *keyfile = NULL, *keydev = NULL;
_cleanup_free_ char *line = NULL, *name = NULL, *device = NULL, *keyspec = NULL, *options = NULL,
*keyfile = NULL, *keydev = NULL, *headerdev = NULL, *filtered_header = NULL;
crypto_device *d = NULL;
char *l, *uuid;
int k;
@ -829,7 +830,20 @@ static int add_crypttab_devices(void) {
if (r < 0)
return r;
r = create_disk(name, device, keyfile, keydev, d ? d->headerdev : NULL, (d && d->options) ? d->options : options, arg_crypttab);
if (options && (!d || !d->options)) {
r = filter_header_device(options, &headerdev, &filtered_header);
if (r < 0)
return r;
free_and_replace(options, filtered_header);
}
r = create_disk(name,
device,
keyfile,
keydev,
(d && d->options) ? d->headerdev : headerdev,
(d && d->options) ? d->options : options,
arg_crypttab);
if (r < 0)
return r;