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and generate them, don't hardcode them - this reduces
the chance of race conditions, which we have seen in
the past and which current execution flow in xbmk even
mitigates in a few places, by doing things in a certain
order.
this change makes the code more robust and easier to
maintain.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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we no longer separate them. xbloc was the on-disk
tmp directory, whereas xbtmp used to be in /tmp
which we assumed to be tmpfs (it may not be, but
often is on many workstation setups - and our
documentation recommended doing this).
as mentioned in the previous commit, benchmarking
shows little speed difference using tmpfs /tmp
versus on-disk /tmp, for our purposes at least.
therefore, the handling of tmp files is being
greatly simplified.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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This way, all operations will be done inside the xbmk
work directory. This is being done, so that I can then
reliably sandybox certain commands in future commits,
for example the "rm" command.
This will also allow me to unify the location of all
temporary files, in future commits. I previously used
the /tmp directory because it's tmpfs-based on many
setups, and this is great for performance. However, in
practise, I never noticed any difference in performance
when benchmarking it (testing /tmp on-disk versus tmpfs).
Signed-off-by: Leah Rowe <leah@libreboot.org>
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it is entirely unused
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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this lets you change the directory for outputted
release files, versus the default "release" directory.
this code is buggy, because it could let you overwrite
a part of xbmk or worse - and checking for such bad
usage would require a lot more code.
knobs are for nobs.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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the actual code works fine, but it's quite hacky.
there are times when use of eval is acceptable; this
is not one of those times, but i'd used it in this
instance when i was being a bit crazy about code size
reductions during my audits.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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setting a variable in this way will never result in
an error. this is a relic from a prior re-factoring
versus older versions of the code.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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we need to copy the main lock file, rather than creating
a new, empty one. this is because the new lock file
handling requires it, and the release lock file will
be used during release builds.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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error out under fault condition
Signed-off-by: Leah Rowe <leah@libreboot.org>
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set - as soon as possible, for example in the extract_me
function.
we only turn off error handling when certain error-prone
tasks are performed, and mitigations are in place after
these commands run to make sure that the result was valid.
this is because in some cases, we want certain buggy behaviours
to be permitted, with errors handled in a more fine-tuned way,
because sh can sometimes be much stricter depending on the
implementation; otherwise, we almost always rely on -e -u in
most of the build system.
this mainly affects the vendorfile insertion logic.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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this is a general function that sets variables,
but there are many types of variables to be set.
rather than have all the logic inside this function,
handle it in subfunctions called by xbmk_set_env.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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the checks of xbmk cache/threads is unrelated.
this has been moved back to the calling function.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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we don't need these anymore, because we now know
whether or not the lock file exists in these cases.
this is because child/parent instance determination
is now done based on the presence of that file, rather
than how TMPDIR is set; and TMPDIR is now set accordingly,
via more robust logic as in previous patching.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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this makes xbmk_set_env easier to read
Signed-off-by: Leah Rowe <leah@libreboot.org>
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it is extremely unlikely to occur, but this patch reduces
the likelihood even further. that unlikely occurance is:
when creating a TMPDIR, it's possible that it was already
created before. this is OK on child instances, where that
is the intended behaviour (unified TMPDIR), but not for
parent instances.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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we previously checked whether xbmk was running a child
instance, based on the initialisation of TMPDIR, but
this relied on unreliable string substitutions, which
could not be made inherently reliable. there were also
no checks on whether the given TMPDIR, even if correct,
was a directory or whether it was a symlink; there were
also no checks on whether it changed.
now with this change, child instances are detected by
the presence of the lock file. the parent instance
writes the generated TMPDIR location in that file, and
this is checked again in the child instance, to ensure
that the TMPDIR didn't change; it also errors out if
the TMPDIR doesn't exist or if it is a symlink.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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for the grep command, we must ensure that errors are
suppressed *BEFORE* outputting to a file. depending
on the sh implementation, the previous code might
have begun outputting to a file before suppressing
errors.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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too many chained commands. break it out a bit.
this makes it more readable, without changing behaviour.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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the output to a file also has its own error handling,
but x_ can be used safely to provide additional assurance
that the script will break if an error occurs.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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group related operations together, without whitespace.
declare all variables at the start of the function.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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instead, create a file indicating that a given xgcc
target had already been built successfully, within a
given coreboot tree.
this will considerably speed up the building of release
archives, especially when there are a lot of boards.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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if e.g. elf/coreboot/default/w500_16mb contains readied
images from before, crossgcc is still being checked.
if you already built all the coreboot images, and wanted
to just modify all the payloads for example, this would
result in a much slower re-build process, because it is
needlessly re-checking crossgcc every time.
by doing it this way, we need up the testing of payloads
quite considerably, during xbmk development.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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instead of copying to a temp file and then
concatenating with padding back to the main
file, we concatenate and create the temp file,
then move the temp file back to the main file.
this is because cat can be quite error prone,
more so than mv, so this will reduce the chance
of corrupt files being left behind depending
on the context (of course, the latter is often
avoided due to xbmk's design, which emphasises
use of temporary files first).
this matches the same design used in the function
unpad_one_byte, which creates the deconcatenated
output in a temporary file first, moving it back.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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The current logic deletes old project files e.g. sources,
but *after* updating the project hash.
This means that if a deletion fails, and the directory
is still there (e.g. src/coreboot/default/) afterward, it's
now a tainted archive, yet the hash has been updated, so
subsequent runs of the build system will cause unknown
errors.
This patch fixes that, by first copying the new hash to
a temporary file. *Then*, deletions are handled, and the
final hash file is updated afterward.
The code is now a bit more bloated as a result, but this will
reduce the risk of tainted sources being handled under fault
conditions.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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since it's the name, e.g. "default", referring to a
project tree (in this example, coreboot/default).
Signed-off-by: Leah Rowe <leah@libreboot.org>
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since it's only ever used as a directory name
Signed-off-by: Leah Rowe <leah@libreboot.org>
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now the code that uses it makes a bit more sense
to the casual reader.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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the new function names make the comments redundant. the
code is now self-explanatory.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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in that case, the previous tree-wide check will cover
it, so the current logic wastes computational time.
this patch therefore somewhat optimises the code.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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the target/project hash checks are basically identical,
so let's unify them under a single function.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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This fixes the following error on ./mk release:
cp: cannot stat 'elf/coreboot/default/d510mo/libgfxinit_txtmode/coreboot.rom': No such file or directory
I recently re-wrote the handling of coreboot images, and
I overlooked this entirely. When a given target specifies
release=n, it has to be skipped, so builds are not done.
The "release" variable is already checked, in mkcoreboottar.
Let's also put it in the other mkhelper functions, to make sure
there are no errors.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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This fixes a build error when doing ./mk release, after
a regression caused by the last few commits.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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This was a problem when I did it before, because individual
target builds weren't automatically re-compiled when needed.
The recent design improvements in lbmk enable this to be
done again.
Cached images in elf/ have no payloads, so they are a liability,
therefore they are padded by one byte to prevent flashing. This
solves the problem that the previous caching had.
With this change, modifying payloads can be tested without
needing to re-build coreboot each time.
The cached coreboot builds are also automatically re-built when
needed, which is another improvement this time, compared to
the last time coreboot builds were cached in this manner.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Detect when a config changes. This is done even if the
entire tree doesn't change.
This is already done per-tree if files change, but
individual project files don't change.
For example, if a grub.cfg changes, the given cached
build for that GRUB tree isn't deleted. Same thing if
a given U-Boot config doesn't change.
This patch fixes a longstanding design flaw of lbmk,
making auto-re-builds more reliable. This complements
another recent change, that deletes all target builds
of a given tree when the tree changes.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Target builds go inside a common directory for
the given tree now, which gets deleted, thus
deleting all target builds of that given tree.
Therefore, the deletion being removed is redundant.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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as opposed to target/
for example:
image the command:
./mk -b u-boot amd64coreboot
This would put the U-Boot binaries here:
elf/u-boot/amd64coreboot/default/
With this change, they now go here:
elf/u-boot/x86_64/amd64coreboot/default/
This solves a problem that existed previously, where
you could modify a given tree in a multi-tree project,
but cached builds for targets branching separately off
of each tree would not be deleted, and thus not re-built.
This accomplishes such a result, without needing to
further check hashes of individual targets.
The latter will still be done, in a future change, because
this change doesn't fix another problem:
If you change a given config, e.g. targetname "foo" which
uses tree "bar", elf/foo/ would not be removed automatically
for re-build.
So this change only deletes individual target builds when
their master tree changes.
Where the target and tree are the same, this also means
elf/tree/target/
for example: seabios/default would create binaries in:
elf/seabios/default/default/
not:
elf/seabios/default/
Signed-off-by: Leah Rowe <leah@libreboot.org>
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it's 2019-2025 now, not 2019-2024, because i recently imported
new pcsx-redux upstream changes that go up to June 2025.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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it means nothing here. in context, if a non-zero return
is observed, we should not do anything here, which is
already the behaviour anyway, except that "break" means
nothing since we're not in a loop here.
where an error exit should be observed, x_ is used inside
the command given for fx_
Signed-off-by: Leah Rowe <leah@libreboot.org>
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handle errors on sha512sum - also handle awk errors inside
the mini subshell, and provide overall error handling.
we know that the project.hash file should always exist, and
always be read no matter what; technically, the find command
that proceeds it might not yield any results, but an empty
file would then be produced.
the edge case of an empty file would have lead to an error
beforehand, when configuring the project in function,
configure_project(), so we've already got that covered.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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when reading old_pjhash, we need to error out where a read
error occurs. such an error is unlikely, but could occur under
certain edge cases.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Don't do no-op if it fails; fall back to "clean" instead,
and fail if that fails.
The no-op was there was not all projects have distclean,
but we do intend for them all to be cleaned.
We mitigate further error by only running make-clean if
a makefile exists.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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i overlooked this one in the previous commit
there is always one.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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not elf/UTIL/TREE
This way, they are automatically deleted when a tree
has to be re-built.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Don't copy the files directly, because we might be doing
this from a work directory that has no files; in this case,
generic "unknown" variables are used, without generating
any files, so the current logic would produce an error.
However, we do need to create those dot files, because
we then rely on them for building release binaries.
The new logic maintains current behaviour, while fixing
this technical edge-case scenario via mitigation.
Signed-off-by: Leah Rowe <leah@libreboot.org>
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Signed-off-by: Leah Rowe <leah@libreboot.org>
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