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The change in arch-nspawn is subtle:
This was the source of "infamous" "it fails every other time" bug that
took me over a year to solve. <https://labs.parabola.nu/issues/435>
By having a repository of local packages (rather than simply running
`pacman -U`), we are inviting pacman to cache them in
`/var/cache/pacman/pkg`. Besides being needless disk writes, this
actually causes a real issue. If the package gets rebuilt, pacman
will balk, as the file no longer matches the cached signature.
So, how do we prevent pacman from caching these local packages?
Simple: include the directory they are already in in the
pacman.conf:CacheDir list. This will prevent pacman from copying
the files to one of the other cache directories.
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The table is just armv7h->armv7l for now.
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This affects both the usage() text, and the error message if the
`/.arch-chroot` version doesn't match. The latter is the one that I
really care about, and motivates this change.
On Parabola, the `arch-nspawn` program isn't in PATH, it's somewhere
under `/usr/lib/`, and gets called as a helper to user-facing
programs; and the error message is displayed directly to the user.
These programs consistently put two spaces after a period when
printing a message to the terminal.
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This allows signature verification by `makepkg --verifysource`, `git
verify-tag`, and such without requiring the user to manually retrieve
the keys first.
This is based off of devtools32 commit 009695b (2017-06-27) by
Erich Eckner <git@eckner.net>. There are 2 differences from that
commit:
- In this version, gpg.conf is owned by builduser, not by root
- In this version, we don't keep appending duplicate lines if we
re-use a chroot
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This worked properly until eab5aba.
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Support for working with `set -u` was broken by 94160d6. Egg on my
face; I'm the one who wants `set -u` support, and I'm the author of
that commit!
libmakepkg does not work with `set -u`; but mostly because of the include
guards! So we just need to temporarily disable `set -u` (nounset) while
loading libmakepkg. Instead of introducing a new variable, just store the
initial nounset status in _INCLUDE_COMMON_SH; rather than a useless
fixed-string "true".
While we're at it, disable POSIX-mode (just in case we're running as "sh"
instead of "bash"), since libmakepkg uses bash-isms that won't parse in
POSIX mode.
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https://lists.parabola.nu/pipermail/dev/2017-June/005576.html
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Don't use error-prone logic e.g.
foo=true; if $foo ...
This completely fails to act as expected when the variable is unset
because of unrelated bugs.
While this merely causes the default behavior to be "false" rather than
"true" in such cases, it is better to fail to enable explicitly
requested behavior (which will be noticed by the user) than to simply
upgrade to this behavior for free (which may not seem to have any
obvious cause).
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Reviewed-by: Luke Shumaker <lukeshu@parabola.nu>
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Fixes regression in 2fd5931a8c67289a8a4acd327b3ce99a5d64c8c7
$run_namcap will always be set to ""
`if $not_a_var; then ...; fi` is always truthful when $not_a_var is
unset or equal to "" and the `then` clause will always be run.
I'm not sure why global state variables need to be cloned locally for
their sole explicit purpose.
But for now this patch implements the minimum necessary work to properly
pass the "do I want namcap" variable into prepare_chroot() according to
the current logic flow.
Note that I have still not thorougly tested makechrootpkg.
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Reviewed-by: Luke Shumaker <lukeshu@parabola.nu>
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This reverts commit ddd508efc083fc9beb6f2c96e2537521b31c1e6f.
The underlying bug (FS#56529) was fixed in glibc 2.26-9.
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Recent development versions of makepkg support reproducible builds
through the environment variable SOURCE_DATE_EPOCH. Pass this variable
through makechrootpkg to makepkg when available.
Also initialize SOURCE_DATE_EPOCH whenever running archbuild to enforce
reproducible builds for repository packages.
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Levente Polyak <anthraxx@archlinux.org>
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This mirrors dbscripts commit
625fa02 by Pierre Schmitz <pierre@archlinux.de> at 2017-04-18 14:20:49
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A couple of the comments noting which globals are used by functions are
outdated/wrong.
- download_sources() : Remove USER from the list. It was always wrong.
Originally, it should have been SUDO_USER (not USER), but I should have
removed it entirely in 4f23609.
- move_products() : Add SRCPKGDEST to the list. Though the commit adding
the comment was only recently upstreamed (as 2fd5931), it originated in
2013 in a commit that has since been rebased many times. Anyway, in
this rebasing, it missed move_products() starting to pay attention to
SRCPKGDEST in fd1be1b (since nothing made git think there was a
"conflict").
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The reason it wasn't moved before was just to keep the diffs
(with --ignore-all-space) smaller, to make merging and rebasing work
easier. Moving code around in a file tends to make that difficult.
But, readability wise, it belongs in main().
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nspawn does not give us a controlling terminal, hence we ignore
interrupts. Apparently this was lost in systemd at some point.
Hack around this by reopening the console to make it the controlling
terminal.
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Coredumps from build chroots are not generally useful. Prevent
them from being generated.
Avoids a lot of annoyance from the GCC testsuite spawning lots of
systemd-coredump processes.
Just set the soft limit so the user can still raise it in the PKGBUILD
if they insist.
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Whoops, this will of course mess with nspawn arguments passed to
arch-nspawn.
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This was lost at some point.
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As not all commands we run are capable of reaping processes correctly.
For example, pacman is not.
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systemd-nspawn use a default environ PATH value of:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
Since filesystem 2017.08, this is no more overrided by /etc/profile
to the Arch default:
PATH=/usr/local/sbin:/usr/local/bin:/usr/bin
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We've already done these during download_sources().
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Slightly more verbose, but also more understandable.
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download_sources(), while the first invocation of makepkg, is a rather
odd place for this kind of guard.
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Commit 58968cf fixed symlinks for package products in $startdir in
light of the simplified chroot setup. However, a similar change needs
to be made for source-package products. This was an easy omission to
make because makechrootpkg does not produce source-pakcages by
default.
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The added PKGBUILD.proto file is so that shellcheck can know know what
to expect that a PKGBUILD sets.
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- Use `read -r` instead of other forms of read or looping
- Use arrays instead of strings with whitespaces.
- In one instance, use ${var%%.*} instead of $(echo $var|cut -f. -d1)
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These changes are all strictly "slap some double-quotes in there".
Anything more than that is not included in this commit.
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These are purely stylistic changes that make shellcheck complain less.
This does NOT include things like quoting currently unquoted variables.
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The bug isn't currently triggered, but I accidentally did trigger when I
was trying to modify the command a bit. I figure a "caution" sign would be
helpful to any future developers.
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The default m4 quote characters: `QUOTE' are troublesome, because ` is
fairly likely to pop up in a shell script (if not for a subshell, because
it is a useful character in comments and user-facing messages).
So, this changes it to [[[QUOTE]]], as it is unlikely to see three braces
together like that, let alone in unbalanced sets.
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The absence of it was allowing an (m4-produced) syntax error in
in a change I had made to be masked.
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What this is really doing is fixing a conflict that I had incorrectly
resolved when rebasing what became 2fd5931 onto cda9cf4. Of course,
because of dynamic scoping, everything worked out, and everything worked as
intended.
Before cda9cf4, it was appropriate for download_sources to take src_owner
as an argument, but after cda9cf4, it is now appropriate to take
makepkg_user as an argument. However, it still takes src_owner as an
argument, but pays 0 attention to it; instead looking at makepkg_user which
it happily inherited because of dynamic scoping.
So change it to take makepkg_user as the argument.
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The `-xdev` flag to `find` makes it not recurse over subvolumes; so it only
supports recursion with depth=1. Fix this by having the function
recursively call itself.
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This is inspired by the thought that went in to the delete_chroot
is_subvolume commit.
sync_chroot($chrootdir, $copydir) copies `$chrootdir/root` to `$copydir`.
That seems a little silly; why do we care about "$chrootdir"? Have it just
be sync_chroot(source, destination) like every other sync/copy command.
Where this becomes tricky is check to decide if we are going to use btrfs
subvolumes or not. We don't care if "$source/.." is on btrfs; the root
could be a directly-mounted subvolume, but and the destination could be
another subvolume of the same btrfs mounted somewhere else.
The things we do care about are:
- The source is a btrfs subvolume (so that we can snapshot it)
- The source is on the same filesystem as the directory that the copy will
be created in.
- If the destination exists:
* that it is not a mountpoint (so that we can delete and recreate it)
* that it is a btrfs subvolume (so that we can quickly delete it)
On the last point, it isn't necessary for creating the new snapshot, just
for quick deletion. That can be a separate check, where we use regular
`rm` for deleting the existing copy, but use subvolume snapshots for
creating the new one.
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Also, shorten the "Synchronizing" message to only include the full path
to the copy if it was specified.
The capslocked variable names in the Usage comment were references to
things in Parabola's tools, that didn't make much sense here out of
context.
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First of all, it ran `is_btrfs "$chrootdir"` to decide if it was on
btrfs, but $chrootdir wasn't defined locally; it just happens to work
because $chrootdir was defined in main(). (I noticed this because in
Parabola, it is called differently, so $chrootdir was empty).
So I was tempted to just change it to `is_btrfs "$copydir"`, but if
$copydir is just a regular directory on a btrfs filesystem, then it
It would leave much of $copydir intact. What we really care about is
if $copydir is a btrfs subvolume; which we can check by combining the
is_btrfs check with inspecting the inum of the directory.
I put this combined check in lib/archroot.sh:is_subvolume.
https://lists.archlinux.org/pipermail/arch-projects/2013-September/003901.html
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This means wrapping variable initialization in init_variables(), and the
main program routine in main().
I did NOT put `shopt -s nullglob` in to a function.
It make make sense to move init_variables() down into the main()
function, instead of having it as a separate function up top (if this
done, then the `-g` flag passed to `declare` in init_variables() can
be dropped). However, in interest of keeping the `diff -w` small, and
merges/rebases simpler, this isn't done here.
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