Although this slightly more verbose it makes it much easier to reason
about. The code that produces the tests heavily benefits from this.
Test lists are also now sorted by test name.
A lot of tests can be defined by just their filename. Moving into their
own list keeps things simpler, especially with the next commit. It also
makes it easier to keep the lists sorted.
It had two symbols which were not actually exported because they were not
listed in libsystemd.sym. They were also entirely unused in our codebase.
I don't think it makes much sense to export just those two functions, and
it doesn't make to build a string processing library in systemd either.
History of the file shows that it was created in
faaa5728d9 'utf8: export utf8 validation functions as part of sd-bus'
and hasn't gone even one non-trivial change since then ;)
Before we had the following scheme:
mempool_enabled() would check mempool_use_allowed, and
libsystemd-shared would be linked with a .c file that provides mempool_use_allowed=true,
while other things would linked with a different .c file with mempool_use_allowed=false.
In the new scheme, mempool_enabled() itself is a weak symbol. If it's
not found, we assume false. So it only needs to be provided for libsystemd-shared,
where it can return false or true.
test-set-disable-mempool is libshared, so it gets the symbol. But then we
actually disable the mempool via envvar. mempool_enable() is called to check
its return value directly.
Some compiler wrappers like honggfuzz pass -fno-builtin explicitly
and because of that the tests where fabs is used fail to compile
with something like
```
FAILED: test-bus-marshal
...
/usr/bin/ld: test-bus-marshal.p/src_libsystemd_sd-bus_test-bus-marshal.c.o: undefined reference to symbol 'fabs@@GLIBC_2.2.5'
/usr/bin/ld: /usr/lib64/libm.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
```
Fun fact: it took honggfuzz less than a minute to discover
https://github.com/advisories/GHSA-gmc7-pqv9-966m used by
systemd to compress/descompress some stuff.
The compression helpers are used both in journal code and in coredump
code, and there's a good chance we'll use them later for other stuff.
Let's hence move them into src/basic/, to make them a proper internal
API we can use from everywhere where that's desirable. (pstore might be
a candidate, for example)
No real code changes, just some moving around, build system
rearrangements, and stripping of journal-def.h inclusion.
GIT_VERSION is not available as a config.h variable, because it's rendered
into version.h during builds. Let's rework jinja2 rendering to also
parse version.h. No functional change, the new variable is so far unused.
I guess this will make partial rebuilds a bit slower, but it's useful
to be able to use the full version string.
The approach to use '''…'''.split() instead of a list of strings was initially
used when converting from automake because it allowed identical blocks of lines
to be used for both, making the conversion easier.
But over the years we have been using normal lists more and more, especially
when there were just a few filenames listed. This converts the rest.
No functional change.
The meson default for static_library() are:
build_by_default=true, install=false. We never interact with the
static libraries, and we only care about them as a stepping-stone towards
the installable executables or libraries. Thus let's only build them if
they are a dependency of something else we are building.
While at it, let's drop install:false, since this appears to be the default.
This change would have fixed the issue with lib_import_common failing
to build too: we wouldn't attempt to build it.
In practice this changes very little, because we generally only declare static
libraries where there's something in the default target that will make use of
them. But it seems to be a better pattern to set build_by_default to false.
Currently, all the logic related to writing journal files lives in
journal-file.c which is part of libsystemd (sd-journal). Because it's
part of libsystemd, we can't depend on any code from src/shared.
To allow using code from src/shared when writing journal files, let's
gradually move the write related logic from journal-file.c to
journald-file.c in src/journal. This directory is not part of libsystemd
and as such can use code from src/shared.
We can safely remove any journal write related logic from libsystemd as
it's not used by any public APIs in libsystemd.
This commit introduces the new file along with the JournaldFile struct
which wraps an instance of JournalFile. The goal is to gradually move
more functions from journal-file.c and fields from JournalFile to
journald-file.c and JournaldFile respectively.
This commit also modifies all call sites that write journal files to
use JournaldFile instead of JournalFile. All sd-journal tests that
write journal files are moved to src/journal so they can make use of
journald-file.c.
Because the deferred closes logic is only used by journald, we move it
out of journal-file.c as well. In journal_file_open(), we would wait for
any remaining deferred closes for the file we're about to open to complete
before continuing if the file was not newly created. In journald_file_open(),
we call this logic unconditionally since it stands that if a file is newly
created, it can't have any outstanding deferred closes.
No changes in behavior are introduced aside from the earlier execution
of waiting for any deferred closes to complete when opening a new journal
file.
When using "capture : true" in custom_target()s the mode of the source
file is not preserved when the generated file is not installed and so
needs to be tweaked manually. Switch from output capture to creating the
target file and copy the permissions from the input file.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Using OpenSSL brings in an additional dependency for all users of
libsystemd.so even though it's just one API that makes use of it.
The khash implementation is awkward as it requires context switches and
computation inside the kernel, thus leaving the process.
Remove both from libsystemd.so, and use exclusively the internal hmac fallback.
While this is not optimized, the sd-id128 API is not used in
performance-critical contexts where hardware acceleration would make a
noticeable difference.
So, as it turns out AF_ALG is turned off in a lot of kernels/container
environments, including our CI. Hence, if we link against OpenSSL
anyway, let's just use that client side. It's also faster.
One of those days we should drop the khash code, and ust use OpenSSL,
once the licensing issues are resolved.
This fuzzer is based on test-bus-match. Even the initial corpus is
derived entirely from it.
https://bugzilla.redhat.com/show_bug.cgi?id=1935084 shows an crash
in bus_match_parse(). I checked the coverage stats on oss-fuzz, and
sadly existing fuzzing did not cover this code at all.
add nfnetlink_nftables helper functions to:
* open a new nfnetlink socket to kernel
* add tables, chains, rules, sets and maps
* delete/flush table
* add and delete elements from sets/maps
This code is not part of the public API of sd-netlink, nor used by it
internally and hence should not be in the sd-netlink directory.
Also, move the test case for it to src/test/.
The idea was that those vars could be configured to 'no' to not install the .pc
files, or they could be set to '', and then they would be built but not
installed. This was inherited from the autoconf build system. This couldn't
work because '' is replaced by the default value. Also, having this level of
control doesn't seem necessary, since creating those files is very
quick. Skipping with 'no' was implemented only for systemd.pc and not the other
.pc files. Let's simplify things and skip installation if the target dir
is configured as 'no' for all .pc files.
_c is misleading because .h files should be included in those lists too
(this tells meson that the build outputs should be rebuilt if the header
files change).
Follow-up for 1437822638.
Yu Watanabe
Lennart Poettering
Jan Janssen
Franck Bui
Zbigniew Jędrzejewski-Szmek
Luca Boccassi
Evgeny Vereshchagin
Mike Gilbert
Daan De Meyer
Christian Brauner
Luca Boccassi
Florian Westphal