It's highly confusing to reference the command line parameters via
argv[] indexes. Let's clean this up, and introduce properly named local
variables that make this easier to follow.
No actualy code changes, just some renaming of variables.
In preparation for logging more mmap-cache statistics get rid of this
piecemeal stats accessor api and just have a debug log output function
for producing the stats.
Updates the one call site using these accessors, moving what that site
did into the new log function. So the output is unchanged for now,
just a trivial refactor.
The BLKID and ELFUTILS strings were present twice. Let's reaarange things so that
each times requires definition in exactly one place.
Also let's sort things a bit:
the "heavy hitters" like PAM/MAC first,
then crypto libs,
then other libs, alphabetically,
compressors,
and external compat integrations.
I think it's useful for users to group similar concepts together to some extent.
For example, when checking what compression is available, it helps a lot to have
them listed together.
FDISK is renamed to LIBFDISK to make it clear that this is about he library and
the executable.
Similar to the previous commit. All callers pass NULL. This will
ease initial nftables backend implementation (less features to cover).
Add the function parameters as local variables and let compiler
remove branches. Followup patch can remove the if (NULL) conditionals.
All users pass a NULL/0 for those, things haven't changed since 2015
when this was added originally, so remove the arguments.
THe paramters are re-added as local function variables, initalised
to NULL or 0. A followup patch can then manually remove all
if (NULL) rather than leaving dead-branch optimization to compiler.
Reason for not doing it here is to ease patch review.
Not requiring support for this will ease initial nftables backend
implementation.
In case a use-case comues up later this feature can be re-added.
After fe841414ef, broadcast address is
also compared with existing one to determine whether the address is
foregin or not. So, the address object should not contain unnecessary
information.
Fixes#17803.
Either suppress the entry entirely, or not at all. But do not suppress
the "localhost" names we recognize, leaving the ones we do not in place.
On Fedora, where "localhost4.localdomain4" is among those listed in
/etc/hosts for 127.0.0.1 we'd thus otherwise drop the "localhost" but
keep the "localhost4.localdomain4" and then on reverse lookups only
return that, which is highly confusing.
Make them rather fail than go to the network.
Previously we'd filter them on LLMNR (explicitly) and MDNS (implicitly,
because it doesn't have .local suffix), but not on DNS.
In order to make _gateway truly reliable, let's not allow it to go to
DNS either, and keep it local.
This is particular relevant, as clients can now request lookups without
local RR synthesis, where we'd rather have NXDOMAIN returned for
_gateway than have it hit the network.
Apparently 30s is a bit too long for some cases, see #5552. But not
caching SERVFAIL at all also breaks stuff, see explanation in
201d99584e.
Let's try to find some middle ground, by lowering the cache timeout to
10s. This should be ample for the problem
201d99584e attackes, but not as long as
half a miute, as #5552 complains.
Fixes: #5552
DNSSEC validation takes the system clock into account to validate
signatures. This means if we had incorrect time and the time is then
changed to the correct one we should flush out everything and
re-validate taking the new time into account.
(This logic will also trigger after system suspend, which is not bad
either, given that quite possibly we are connected to a different
network, and thus would get different DNS data, without us noticing
otherwise via link beat).
UML runs as a user-process so it can quite easily be ran inside of
another hypervisor, for instance inside a KVM instance. UML passes
through the CPUID from the host machine so in this case detect_vm
incorrectly identifies as running under KVM. So check we are running
a UML kernel first, before we check any other hypervisors.
Resolves: #17754
Signed-off-by: Christopher Obbard <chris.obbard@collabora.com>
Apparently, IF_UNICAST_IF does not influence the routing decisions done
during connect(). But SO_BINDTODEVICE/SO_BINDTOINDEX does, which however
brings a lot of other semantics with it, we are not so interested in
(i.e. it doesn't not allow packets from any other iface to us, even if
routing otherwise allows it).
Hence, let's bind to the ifindex immediately before the connect() and
unbind right after again, so that we get the semantics we want, but not
the ones we don't.
Fixes: #11935
Replaces: #12004
Daan De Meyer