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In some cases, we want to exclude a directory's contents but not
the directory itself. In other cases, we want to exclude a directory
and its contents. Let's extend the denylist logic in copy.h to support
both by changing the denylist from a set to hashmap so we can store the
deny type as the value.
We also modify the repart ExcludeFiles= option to make use of this. If
a directory to exclude ends with a "/", we'll only exclude its contents.
Otherwise, we'll exclude the full directory.
I left this one as a separate commit because it is more involved.
We want people to compile with valgrind support, but we don't want to
use a slow hash function unless we're actually running under valgrind.
So the compile-time check is changed to a runtime check. When compiled
with optimization, the compiler should elide the checks on the constants,
and only leave the check for RUNNING_ON_VALGRIND. It is wrapped with
_unlikely_ so that the else branch is put in the hot path.
Most of the support for valgrind was under HAVE_VALGRIND_VALGRIND_H, i.e. we
would enable if the valgrind headers were found. The operations then we be
conditionalized on RUNNING_UNDER_VALGRIND.
But in a few places we had code which was conditionalized on VALGRIND, i.e. the
config option. I noticed because I compiled with -Dvalgrind=true on a machine
that didn't have valgrind.h, and the build failed because
RUNNING_UNDER_VALGRIND was not defined. My first idea was to add a check that
the header is present if the option is set, but it seems better to just remove
the option. The code to support valgrind is trivial, and if we're
!RUNNING_UNDER_VALGRIND, it has negligible cost. And the case of running under
valgrind is always some special testing/debugging mode, so we should just do
those extra steps to make valgrind output cleaner. Removing the option makes
things simpler and we don't have to think if something should be covered by the
one or the other configuration bit.
I had a vague recollection that in some places we used -Dvalgrind=true not
for valgrind support, but to enable additional cleanup under other sanitizers.
But that code would fail to build without the valgrind headers anyway, so
I'm not sure if that was still used. If there are uses like that, we can
extend the condition for cleanup_pools().
There are three conditionalizations in the status quo ante function,
which kinda indicates this should not be the same function in the first
place. Hence split this up, simplify it, and have two distinct functions
without conditionalizations.
It's only used from sd-journal.c, and we soon would like to pass in an
sd_journal object, hence let's move this over.
This only moves code, doesn't change behaviour
These are provided by libc instead of the compiler and are not supposed
to be used in freestanding environments.
When cross-compiling with clang and the corresponding gcc
cross-toolchain is not around, clang may pick up the wrong header from
the host system.
An rpminspect test in Fedora/RHEL is flagging our stub files as having an
executable stack. The check is correct:
$ readelf --wide --program-headers build/src/boot/efi/linuxx64.elf.stub | rg -i stack
GNU_STACK 0x000000 0x0000000000000000 0x0000000000000000 0x000000 0x000000 RWE 0x10
It seems to be just an omission in the linker script… None of the objects that
are linked into the stub are marked as requiring an executable stack:
$ readelf --wide --sections build/src/boot/efi/*.c.o \
/usr/lib/gnuefi/x64/libgnuefi.a \
/usr/lib/gnuefi/x64/libefi.a \
/usr/lib/gcc/x86_64-redhat-linux/12/libgcc.a \
| rg '.note.GNU-stack.*X'
(nothing)
On aarch64 we end up with a nonexecutable stack, but on ia32 and x64 we get one,
so this might be just a matter of defaults in the linker. It doesn't matter
greatly, but let's mark the stack as non-executable to avoid the warning.
Note: '-Wl,-z' is not needed, things work with just '-z'.
Before this commit, battery_is_low() returns
true if there's no battery on the system.
It's now modified to check if the system is
on AC power first, and returns false early
if that's the case.
Fixes#26492
We already have this nice code in system that determines the block
device backing the root file system, but it's only used internally in
systemd-gpt-generator. Let's make this more accessible and expose it
directly in bootctl.
It doesn't fit immediately into the topic of bootctl, but I think it's
close enough and behaves very similar to the existing "bootctl
--print-boot-path" and "--print-esp-path" tools.
If --print-root-device (or -R) is specified once, will show the block device
backing the root fs, and if specified twice (probably easier: -RR) it
will show the whole block device that block device belongs to in case it
is a partition block device.
Suggested use:
# cfdisk `bootctl -RR`
To get access to the partition table, behind the OS install, for
whatever it might be.
Let's move stuff that only applies to the final image to the
postinst script. Let's also move out some of the static files to
mkosi.extra/ instead of hardcoding them in scripts.
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.
