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Enumerating DNS-SD PTR resource records are a special case and
are supposed to have non-unique keys pointing to services of the
same type running on different hosts. There's no need for them
to be checked for conflicts.
Thus don't check for conflicts such RRs.
Refcounting for a RR's key is done separately from refcounting
for the RR itself, but in dns_scope_notify_conflict() we don't
do that. This may lead to a situation when a RR key put in the
conflict_queue hash as a value's key gets freed upon
cache reduction when it's still referenced by the hash.
Thus increase refcount for the key when putting it into the hash
and unreference it upon removing from the hash.
Closes#6456
The __get_cpuid() function only calls __cpuid() if __get_cpuid_max()
returns a value that is less than or equal to the leaf value.
In QEMU/KVM, I found that the special hypervisor leaf value (0x40000000U)
is always larger than the value retured by __get_cpuid_max().
Avoid this problem by calling the __cpuid() macro directly once we have
checked the hypervisor bit from leaf 1.
Fixes: d31b0033b7
It's a bit weird to test these strings after the fact instead of before.
Let's make sure that we don't even attempt the string escaping if the
strings are NULL.
Follow-up for #7688
This adds a simple condition/assert/match to the service manager, to
udev's .link handling and to networkd, for matching the kernel version
string.
In this version we only do fnmatch() based globbing, but we might want
to extend that to version comparisons later on, if we like, by slightly
extending the syntax with ">=", "<=", ">", "<" and "==" expressions.
Follow-up to @poettering’s comments in #7723:
- Slightly expand on the difference between using tmpfiles.d and service
directives
- Mention CacheDirectory=
- Mention LogsDirectory=
- Abbreviate and unify some later descriptions
ConfigDirectory= is not mentioned, since it does not support the
functionality mentioned in the manpage which tmpfiles.d provides:
copying or symlinking default configuration from /usr/share/factory. And
the user package variable file locations don’t mention the directives
because in user units the service can always create the directories
itself (whereas in system units lesser-privileged services lack
permission to create them).
Let's unify the code for parsing command line verbs, and reuse the
common verbs.[ch] API in systemd-analyze too.
This adds a couple of error messages when people pass too many
arguments. Moreover thus pushes bus allocation into the verb functions,
which corrects a couple of cases where we previously allocated a bus but
really didn't need to.
Other than that behaviour shouldn't really change.
The boot loader systemd-boot removes ".conf" from file name of entry
configs, and determine which entry is the default entry.
However, bootspec, which is used by systemctl and bootctl did not
remove ".conf", then sometimes bootctl marks wrong entry as default.
This fixes the logic to choose the default entry in bootspec, to
match the logic used in systemd-boot boot loader.
Fixes#7727.
We of course don't know in which header glibc will export pivot_root()
and if it ever will. But there's a good chance they'll place it where
chroot() is located, given the similarity in the operations, hence let's
try our luck and look for it at the same place.
If we are lucky this means we don't have to patch our code if glibc
decides to expose the call one day.
This reworks how we set _GNU_SOURCE when checking for the availability
of functions:
1. We set it for most of the functions we look for. After all we set it
for our entire built anyway, and it's usually how Linux-specific
definitions in glibc are protected these days. Given that we usually
have checks for such modern stuff only anyway, let's just blanket enable
it.
2. Use "args" instead of "prefix" to set the macro. This is what is
suggested in the meson docs, hence let's do it.
We make assumptions about the comm name we set via PR_SET_NAME: that it
would reflect the process name, but that's only the case for the main
thread. Moreover, we cache the mmap() region without locking.
Let's hence be safe rather than sorry and support all this only in the
main thread.
It's a relatively small wrapper around safe_fork() now, hence let's move
it over, and make its signature even more alike. Also, set a different
process name for the polkit and askpw agents.
