* Detect at install time the kernel the user is running
* If a 64-bit kernel is detected skip any question and just build
the ZFS kernel module.
* If a 32-bit kernel is detected, then the user is warned (via debconf)
about that. And the user is asked to stop the build (the default
is to stop the build). If the user selects to stop the build then
we exit with status 0 on postinst before building the module so
the package gets as installed correctly on the dpkg database but
the module is not built.
* If we can't detect if the kernel is 32 or 64 bit we tell the user that
we couldn't detect that and we tell him that he shouldn't continue
building ZFS on a 32-bit kernel.
We also ask him to stop the build and we proceed like in the previous
case.
* If the user asks by mistake "no" to build the kernel and later he changes
his mind and wants to build it, he just needs to reconfigure the package:
dpkg-reconfigure zfs-dkms
* TODO: Add translations for the debhelper templates.
* The compilation of the module happens inside the #DEBHELPER# block
(automatically handled by dh_dkms). So call notify-reboot-required
after it was built.
* The postinst script is ran with "set -e" which means that it will abort on any
command returning non-zero and therefore the package will fail to install.
* false && anything => false
* Ex:
clopez ~ $ false && true
clopez ~ $ echo $?
1
* The check should be done with if-then-fi
* Ex:
clopez ~ $ if false; then anything; fi
clopez ~ $ echo $?
0
The #DEBHELPER# macro produces code for DKMS that can cause sporadic
failures if it is not run last. Identical code is executed differently
depending on whether it is before or after the template expansion.
Closes: zfsonlinux/zfs#629
Call `/usr/share/update-notifier/notify-reboot-required` in the
zfs-dkms postinst script to advise the system that kernel module
upgrades are activated by a reboot.
Closes: dajhorn/pkg-zfs#25
Resolve this lintian warning:
W: zfs-dkms: maintainer-script-ignores-errors postinst
N:
N: The maintainer script doesn't seem to set the -e flag which ensures that
N: the script's execution is aborted when any executed command fails.
N:
N: Refer to Debian Policy Manual section 10.4 (Scripts) for details.
N:
N: Severity: normal, Certainty: certain
N:
