[DSE-Dev] Bug#765392: selinux-basics: Installation fails on Xen DomU, update-grub doesn't exist

[Bodo Bellut]

Package: selinux-basics
Version: 0.5.0
Severity: important

Dear Maintainer,

installation of selinux-basics fails on a Xen DomU where no update-grub
exists:

Setting up selinux-basics (0.5.0) ...
/var/lib/dpkg/info/selinux-basics.postinst: 17: /var/lib/dpkg/info/selinux-basics.postinst: update-grub: not found
dpkg: error processing selinux-basics (--configure):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 selinux-basics

Creating /usr/local/sbin/update-grub which does nothing but returns
exit value 0, installation then succeeds.

Secondary to this bug, when the installation failed, the next attempt
fails already with

Setting up selinux-basics (0.5.0) ...
ln: failed to create symbolic link `/etc/udev/rules.d/010-no-legacy-ptys.rules': File exists
dpkg: error processing selinux-basics (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 selinux-basics

Removing the link then resolves the installation issues.

Please consider testing for the existence of both update-grub and
the above mentioned link instead of failing.

Thanks and regards,
Bodo

-- System Information:
Debian Release: 7.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages selinux-basics depends on:
ii  checkpolicy      2.1.8-2
ii  policycoreutils  2.1.10-9
ii  python           2.7.3-4+deb7u1
ii  selinux-utils    2.1.9-5

Versions of packages selinux-basics recommends:
ii  selinux-policy-default  2:2.20110726-12
pn  setools                 <none>

Versions of packages selinux-basics suggests:
ii  logcheck        1.3.15
pn  syslog-summary  <none>

-- no debconf information