Notes:
- No bootloader is configured; images must be booted via direct kernel
- Tested via qemu + opensbi fw_jump.elf + kernel/initrd
- As riscv64 is currently in ports, the following options are required:
--distribution unstable
--mirror-bootstrap http://ftp.ports.debian.org/debian-ports/
--security false
--debootstrap-options --keyring=/usr/share/keyrings/debian-ports-archive-keyring.gpg
- Normally ports require stacking two dists, unstable and unreleased.
debootstrap does not support doing this, but as of this writing, there
is nothing in riscv64 unreleased which is required to bootstrap.
However, this would not have been possible a year ago.
this was previously not done in 8b109ffb96
to keep the renaming simple, but leaving the variable plural is a cause
for confusion.
since this property is stored in the INI style config/build config file
rather than a shell script based one, at the property there is already
singular, there was no need for a backwards compatibility hack.
Gbp-Dch: Short
this function takes one or more required stage fileS _plural_, and exits
if any are missing (or at least it does now after the refactor).
let's rename it to make things more clear
Gbp-Dch: Short
as suggested by Raphaël
rather than have fixed stagefile filename strings at all in the scripts,
use `$(basename $0)` to use the name of the script (which is the same for
almost all cases anyway, and the stage files are supposed to be almost
exclusively unique per-script). we can thus simplify things by determining
the filename for most use cases within the functions themselves.
this does change the file used by a couple of scripts, affecting backwards
compatibility of executing live-build upon an existing partially or fully
completed build:
- binary_grub-pc used "binary_grub"
- chroot_includes used "includes.chroot"
care had to be taken for the following cases:
- there are some cases like bootstrap_cache, source_debian and
bootstrap_debootstrap which are dealing with more than one file, and/or
otherwise a filename that is not specific to the script itself exactly,
or should not be based upon its name.
- some cases like chroot_cache, bootstrap_cache and
chroot_install-packages need to append something to the end of the name
depending upon which pass/action mode the script is being executed with.
- furthermore in the bootstrap_cache case one of the filenames is used
within the bootstrap_debootstrap and thus needs very careful handling
to be certain that a change in filename of bootstrap_cache does not
break bootstrap_debootstrap.
Gbp-Dch: Short
- avoid all need to pass ".build/" path in stage file names into the
functions
- add a helper to remove a stage file (required to complete the above
properly)
- avoid duplicating filenames within scripts which makes them prone to
mistakes (some instances of which I've actually encountered and had
to fix)
Gbp-Dch: Short
Combine the check+create done in each script. (The original functions
are still callable as before, but a new combined `Aquire_lockfile`
function can be called instead, as now used).
Note, a further simplification could be done in removing the passing of
the lock filename in as a parameter since every use of the functions is
with ".lock". The lock functions already have a fallback to ".build/lock"
though. Checking the history, the fallback used to be for a system wide
lock, which was then replaced with this config-tree specific one. As long
as that is not used implicitly by 3rd-party hooks then surely we are free
to change the fallback to ".lock" and further remove passing in a name as
a param...?
history:
db5d2b0dcd0aa8289a37
Gbp-Dch: Short
Closes: #952918
(part of never completed side-by-side multi archi support)
Several scripts make a call to a function called Check_multiarchitectures,
the purpose of which is to adjust the target directory that certain 'live'
and 'install' files are located in. The idea is that a script sets up
'DESTDIR', 'DESTDIR_LIVE' and 'DESTDIR_INSTALL' as appropriate and then
the script appends a suitable arch dependant postfix to the directory
name, depending upon the arch currently being targetted. This would allow
the script to be run multiple times, each for a different architecture.
This is a part of an implementation of allowing multiple architectures to
sit side by side within the same live image, selectable from the
bootloader menus. (As opposed to multiple architectures mixed within the
same userland).
This is evidently the case both from the fact that:
1) The arch specific postfix chosen in that function depends on a var
called LB_CURRENT_ARCHITECTURE, which is never set. In fact going
back through the git history to the introduction of the function in
0d5ff4ca75, the var (even considering
var name changes) has never been set by anything. So effectively the
call to the function has been entirely redundant all this time.
2) The major build stages do not perform multiple executions of substages
per arch. Thus from this perspective it seems that the support was
never fully implemented.
3) If any doubt remained, there is an old branch called 'tmp-multiarch'
which has a couple of commits making progress with completing support,
such as implementing the above missing pieces.
The above mentioned branch is 10 years old and can be considered abandoned.
It is not clear whether the original author ever intended to complete and
merge this; nor is it at all clear at what stage of completion it was at.
At any rate, imo it is not at all particularly useful to have extra code
and complexity in order to be able to cram multiple environments side by
side in one image, not when CDs/DVDs and even to some extent USB pen drives
are so cheap. And who really needs more than one environment so
desperately on just one such medium.
If this was not enough to justify removal, then there is also the fact that
the support that was implemented has become completely broken over the
years with scripts diverging in terms of the variable names the function
modifies such that they are incompatible with it.
A quick assessment of the state of this latter aspect:
good:
- grub-legacy uses the correct var names so is fine
- memtest similarly good
- installer_debian-installer looks okay
questionable:
- binary_linux-image uses the correct vars but might not select the
right kernel and initrd files to copy (seems to copy all)
bad:
- grub-pc is making a redundant call, after functionality was moved
to the loopback script
- loopback is using the wrong vars (INITFS instead of DESTDIR +
DESTDIR_INSTALL + DESTDIR_LIVE), plus is doing its own amd64+i686
thing anyway, so the function call would achieve nothing anyway.
- syslinux is also using the wrong var names so would not work with
it and is not even making the necessary function call. Also the
install paths are fixed in the hard coded cfg files anyway so this
would need addressing with placeholders and sed replacement, but
then it is not entirely clear how things should work with respect
to install entries and multi-arch anyway, are we having multiple
copies of the installer, one for each target arch and then multiple
copies of the install menus, perhaps under different submenus?
So, this removes the artefacts of this never completed feature.
Gbp-Dch: Short
Current versions of the project files are built upon versions published
and licensed by Daniel Baumann, but are modified copies of those files and
thus need to be marked as such per licensing requirements (afaik he did
not pass along ownership / licensing rights to anyone when he left the
project). We should also be careful to not be misrepresenting such
modified copies as being attributed to Daniel.
Adding a new copyright line referring to "The Debian Live team" should
suffice for this.
The authorship block in man pages has also similarly been updated.
Notes:
- tweaked a copy of daniel copyright lines stating 2014 instead of 2015.
both of these cases were in files that i had personally introduced in
some of my past merged commits that moved some code around. i don't know
why they stated 2014.
- binary_onie was introduced in 2018, so that has a 2018 date instead of
2016 unlike the rest.
- 'efi-image' is a 3rd-party (Canonical Ltd) work that we bundle, but it
has been modified by 674794a8f4 and
36a3ba7634 so I similarly added a
debian live copyright line.
- 'grub-cpmodules' is similar. it was only changed by the indentation fix
of 36a3ba7634 but modification is
modification, and this does help cover any possible future changes that
might be made.
Future live-build versions will still allow to use casper,
but its configuration will be done differently by hooks
in the config tree, rather than embedded and maintenance intensive
code in live-build itself.
Rather than a half broken image type, we'll bet our money on having proper
partman recipies support implemented for hdd image types.
Even if we don't make it for wheezy, it's better to not have virtual-hdd
in there and tell users to use the jessie version for proper hdd images.
Previously, we needed to keep the lb_* prefix as the scripts
could also be executed standalone. Since the lb wrapper is
mandatory since squeeze, we can drop this now.
Roland Clobus
Ryan Finnie
Lyndon Brown
Balint Reczey
Daniel Baumann
Daniel Baumann