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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.
Suggested by Daniele Nicolodi:
https://github.com/systemd/systemd/pull/23160#discussion_r855853716
This is possible only if the macro is never used in #if, but only in C code.
This means that all places that use #if have to be refactored into C, but we
reduce the duplication a bit, and C is nicer to read than preprocessor
conditionals.
Follow-up for da13d2ca07. Instead of having
separate definitions of the bitmask flags, just define DEFAULT_COMPRESSION_FOO=0|1
directly.
(It *should* be possible to do this more simply, but the problem is that
anything that is used in #if cannot refer to C constants or enums. This is the
simplest I could come up with that preserves the property that we don't use #ifdef.)
The return value from compress_blob() is changed to propagate the error instead
of always returning -EOPNOTSUPP. The callers don't care about the specific error
value. compress_blob_*() are changed to return the compression method on success, so
that compress_blob() can be simplified. compress_stream_*() and compress_stream() are
changed in the same way for consistency, even though the callers do not currently use
this information (outside of tests).
Follow-up for cd3c6322db
journal-def.h should be self-contained too, as it represents the journal object ABI.
Duplicate the enums, as they also need to be in config.h for it to be self-contained,
and enums are not available to the preprocessor. Use an assert to ensure they don't
diverge.
Compression and decompression are controlled by the same build flag,
so if one wants to use, say, LZ4 to compress, ZSTD has to be disabled,
which means one loses the ability to read zstd-compressed journals.
Add a default-compression meson option, that allows to select any of
the available compression algorithms as the default.
To make sure we don't miss any _exit() calls let's move the
coverage-related tweaks into a separate header file and include it
explicitly on the compiler command line using -include when a coverage
build is requested.
Follow-up to c6552ad381.
In --help output, change "$0" → "kernel-install". We generally don't include
the full path in --help output, and let's not do this here either.
kernel-install is now in build/ directly, not in the subdirectory.
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.
This is very similar to (and directly based on) the test for --help. I think
it's nice to do this: the test is very quick, but it'll catch cases where we
forgot to hook up the option, or forgot to exit after printing --version, and
it'll also increase our test coverage a bit.
This test has overlap with test-install-root, but it tests things at a
different level, so I think it's useful to add. It immediately shows various
bugs which will be fixed in later patches.
Defaults to /bin/bash, no changes in the default configuration
The fallback shell for non-root users is as-specified,
and the interactive shell for nspawn sessions is started as
exec(default-user-shell, "-" + basename(default-user-shell), ...)
before falling through to bash and sh
mostly to make sure that systemd is buildable without some dependencies
but other than that it should make it easier to build it with MSan without
having to compile all the dependencies with MSan.
ERROR:
Cannot use target systemd as a generator because it is built for the
host machine and no exe wrapper is defined or needs_exe_wrapper is
true. You might want to set `native: true` instead to build it for
the build machine.
The script was probably not used for a very long time. It is currently
passed systemd_boot.so as boot loader, which cannot work. The test
entries it creates are all pointing at non-existant efi/linux binaries,
which means they would not even show up in the menu if the created image
were actually booted. There is also nothing that actually tries to run
the image in the first place.
If we end up creating a proper systemd-boot test suite, it would be
better to start from scratch. In the meantime, mkosi already covers
the bare minimum with a simple bootup test.
Currently, running "meson build" followed by "meson test -C build"
will result in many failed tests due to missing dependencies. This
commit adds the missing dependencies to make sure no tests fail.
The whole point of systemd-stdio-bridge is to be executed on "foreign" systems
where the path might be different, so we use $PATH to find the binary everywhere.
to make it easier to fuzz code that uses external libraries like libelf/libdw.
The dependencies are skipped on OSS-Fuzz because they aren't available
at runtime if they aren't linked statically. This restriction can safely
be lifted when the fuzzers are built locally with all the dependencies
installed. As far as I know there is at least one fuzz target in the systemd
repository that can benefit from this: https://github.com/systemd/systemd/issues/11018
Meson would generate the following compile test:
#define crypt_set_metadata_size meson_disable_define_of_crypt_set_metadata_size
#include <limits.h>
#undef crypt_set_metadata_size
#ifdef __cplusplus
extern "C"
#endif
char crypt_set_metadata_size (void);
#if defined __stub_crypt_set_metadata_size || defined __stub___crypt_set_metadata_size
fail fail fail this function is not going to work
#endif
int main(void) {
return crypt_set_metadata_size ();
}
This works fine when the identifier being queried is an actual function. But
crypt_token_max() is an inline function, so getting the address would fail,
leading to a false negative result. Complation would fail because the function
would be defined twice.
With this patch, the check is changed to include the header:
#include <libcryptsetup.h>
#include <limits.h>
#if defined __stub_crypt_set_metadata_size || defined __stub___crypt_set_metadata_size
fail fail fail this function is not going to work
#endif
int main(void) {
void *a = (void*) &crypt_set_metadata_size;
long long b = (long long) a;
return (int) b;
}
which seems to work correctly.
This should simplify overriding the program locations as the binary
names should now not change if cross compiling.
It's likely any attempts at autodetecting these in cross environments will
be brittle at best so lets just disable it.
