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A long time some function only worked when in a session, and the test
didn't execute them when sd_pid_get_session() failed. Let's always call
them to increase coverage.
While at it, let's test for ==0 not >=0 where we don't expect the function
to return anything except 0 or error.
When peer address is set, address_compare_func() (or address_equal())
does not work in link_is_static_address_configured(), as an Address object
stored in a Link does not contain peer addresses. So, we need to also
compare with in_addr element for IPv4 case.
Fixes#17304.
We need to make sure that our coredump pattern handler manages to read
process metadata from /proc/$PID/ before the kernel reaps the crashed
process. By default the kernel will reap the process as soon as it can.
By setting kernel.core_pipe_limit to a non-zero the kernel will wait for
userspace to finish before reaping.
We'll set the value to 16, which allows 16 crashes to be
processed in parallel. This matches the MaxConnections= setting in
systemd-coredump.socket.
See: #17301
(This doesn't close 17301, since we probably should also gracefully
handle if /proc/$PID/ vanished already while our coredump handler runs,
just in case people loclly set the sysctl back to zero. i.e. we should
collect what we can and rather issue an incomplete log record than
none.)
When doing import-environment, we shouldn't fail if some assignment is invalid.
OTOH, if the invalid assignment is specified as a positional argument, we should
keep failing.
This would also fix https://bugzilla.redhat.com/show_bug.cgi?id=1754395, by
ignoring certain variables which are not important in that scenario. It seems
like the right thing to do in general.
There was some confusion about what POSIX says about variable names:
names shall not contain the character '='. For values to be portable
across systems conforming to POSIX.1-2008, the value shall be composed
of characters from the portable character set (except NUL and as
indicated below).
i.e. it allows almost all ASCII in variable names (without NUL and DEL and
'='). OTOH, it says that *utilities* use a smaller set of characters:
Environment variable names used by the utilities in the Shell and
Utilities volume of POSIX.1-2008 consist solely of uppercase letters,
digits, and the <underscore> ( '_' ) from the characters defined in
Portable Character Set and do not begin with a digit.
When enforcing variable names in environment blocks, we need to use this
first definition, so that we can propagate all valid variables.
I think having non-printable characters in variable names is too much, so
I took out the whitespace stuff from the first definition.
OTOH, when we use *shell syntax*, for example doing variable expansion,
it seems enough to support expansion of variables that the shell would allow.
Fixes#14878,
https://bugzilla.redhat.com/show_bug.cgi?id=1754395,
https://bugzilla.redhat.com/show_bug.cgi?id=1879216.
Latest glibc has deprecated mallinfo(), so it might become unavailable at some point
in the future. There is malloc_info(), but it returns XML, ffs. I think the information
that we get from mallinfo() is quite useful, so let's use mallinfo() if available, and
not otherwise.
It is expected for numerous autostart files to not be convertible to
corresponding units. The information is only useful for someone
debugging why a file might not be started, but it is not generally
useful for users in most situations.
As such, lower the warnings. Anyone wondering why an application is not
started will easily notice that the unit is not generated. From there it
will be somewhat harder to figure out why, but the overall trade-off is
still improved.
Fixes: #17305
We previously checked the QR bit to decide whether the RFC6975 algorithm
data in our packets. But that doesn't work in many cases, since we
initialize the QR flags along with the other flags usually only after
appending OPT (since success to do so propagates into flags). Hence,
let's add an explicit parameter that controls whether to include RFC6975
data in DNS packets, and set it to false for stub reply, and on true for
upstream queries.
Fixes: #17217
My logs have lines like this:
Oct 10 09:38:38 krowka systemd-logind[1889]: External (2) displays connected.
Oct 10 09:38:38 krowka systemd-logind[1889]: Refusing operation, as it is turned off.
Without some hint *what* operation is ignored, this is not very informative.
(I remember this came up before, but I don't remember why we didn't change this
log line back then...)
to drop braces around single-line if statements. Also, prefix it with
zz- so it runs as the last one, so it's able to fix stuff tweaked by
previous transformations.
Coccinelle can't do this automagically and requires we supply it
respective header files. Unfortunately, the option for this
(--macro-file=) can be used only once, so let's create our own
macro file by collecting macros needed for the semantic parser
to be happy.
This fixes a race where a block device that pops up and immediately is
locked (such as a loopback device in preparation) might result in
udev never run any rules for it, and thus never turn on inotify watching
for it (as inotify watching is controlled via an option set via udev
rules), thus not noticing when the device is unlocked/closed again
(which is noticed via IN_CLOSE_WRITE inotify events).
This changes two things:
1. Whenever we encounter a locked block device we'll now inotify watch
it, so that it is guaranteed we'll notice when the BSD lock fd is
closed again, and will reprobe.
2. We'll now turn off inotify watching again once we realise the
udev rules don't actually want that. Previously, once watching a
device was enabled via a udev rule, it would be watched forever until
the device disappeared, even if the option was dropped by the rules
for later events.
Together this will make sure that we'll watch the device via inotify
in both of the following cases:
a) The block device has been BSD locked when udev wanted to look at it
b) The udev rules run for the last seen event for the device say so
In all other cases inotify is off for block devices.
This new behaviour both fixes the race, but also makes the most sense,
as the rules (when they are run) actually really control the watch state
now. And if someone BSD locks a block device then it should be OK to
inotify watch it briefly until the lock is released again as the user
this way more or less opts into the locking protocol.
It makes sense to ignore all the common fields that are expected and
that we can safely ignore. Note that it is fine to ignore URL as we will
already warn about the type= being wrong in that case.
Closes: #17276
This helper alone doesn't make too much sense, but it's preparatory work
for #17274, and I guess it can't hurt to land it early, it does make the
ratelimit code a tiny bit prettier after all.
