[Bug 1332518] Re: keyscript=passdev for keyfiles via usb does not timeout

[Philippe Gaucher]

I have the same problem. I posted this question a long time ago here: 
http://askubuntu.com/questions/381604/crypttab-syntax-for-luks-container-with-key-file-or-passphrase
without getting any answer. It would be safe to have a script which asks for a password if no usb key is plugged.

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https://bugs.launchpad.net/bugs/1332518

Title:
  keyscript=passdev for keyfiles via usb does not timeout

Status in “cryptsetup” package in Ubuntu:
  Confirmed

Bug description:
  1.) ubuntu-release
  root at ubuntu-4crypt:/var/log# lsb_release -rd
  Description:	Ubuntu 14.04 LTS
  Release:	14.04

  2.)pkg-version
  root at ubuntu-4crypt:/var/log# apt-cache policy cryptsetup
  cryptsetup:
    Installiert:           2:1.6.1-1ubuntu1
    Installationskandidat: 2:1.6.1-1ubuntu1

  3.)expected
  root at ubuntu-4crypt:/var/log# zless /usr/share/doc/cryptsetup/README.initramfs.gz | grep timeout
  The "key" part of /etc/crypttab will be interpreted as <device>:<path>[:<timeout>],
  The timeout option has to be in seconds.

  After timeout cryptsetup should ask for a passphrase to unlock the
  encrypted filesystem.

  4.)unexpected
  With my keyfile the system starts as expected; however the timeout option from the documentation has no effect at all...
  Others already tried to report this, eg: https://answers.launchpad.net/ubuntu/+source/cryptsetup/+question/248155

  5.)no logfiles
  I can not provide logfiles, as I do not know how to log information about initramfs/upstart.
  I have setup a vm to test this with lvm/sdaX_crypt.

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