[pkg-cryptsetup-devel] Bug#913233: "/etc/crypttab" ’s manual, an initramfs image can use "/etc/cryptsetup-initramfs/conf-hook" to unlock

[21naown at gmail.com]

Package: cryptsetup
Version: 2:1.7.3-4
Severity: normal


In the example below, “root” is in parentheses because I do not really 
know if this mechanism works for any encrypted filesystem which is not 
an encrypted root filesystem (it does not work from my tests, but maybe 
there are differences to take into account).

Example of a sentence which could be added just before the description 
of the field “options”:
An encrypted (root) filesystem containing its key file can be unlocked 
by the initramfs image if the value of the variable “KEYFILE_PATTERN”, 
in the file “/etc/cryptsetup-initramfs/conf-hook”, matches the key file 
path during the generation of the initramfs image.


-- Package-specific info:

-- System Information:
Debian Release: 9.5
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 4.9.0-8-686-pae (SMP w/1 CPU core)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), 
LANGUAGE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages cryptsetup depends on:
ii  cryptsetup-bin         2:1.7.3-4
ii  debconf [debconf-2.0]  1.5.61
ii  dmsetup                2:1.02.137-2
ii  libc6                  2.24-11+deb9u3

Versions of packages cryptsetup recommends:
ii  busybox                                 1:1.22.0-19+b3
ii  console-setup                           1.164
ii  initramfs-tools [linux-initramfs-tool]  0.130
ii  kbd                                     2.0.3-2+b1

Versions of packages cryptsetup suggests:
ii  dosfstools              4.1-1
pn  keyutils                <none>
ii  liblocale-gettext-perl  1.07-3+b1

-- debconf information excluded