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See https://github.com/systemd/systemd/pull/2576#discussion-diff-52592680
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tests: add test for https://github.com/systemd/systemd/issues/1981
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man: follow up fixes for #2575
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A variety of man page fixes
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The "is-enabled" command doesn't care whether the symlinks are declared in the
[Install] section of a unit file or not, when returning "enabled". Any alias,
.wants/ or .requires/ symlinks suffice.
Fixes: #975
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Fixes: #846
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Fixes: #1502
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(And similar for resolved)
Fixes: #1630
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Fixes: #1774
Fixes: #1090
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References: #2468
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Fixes: #2523
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This is a follow-up to https://github.com/systemd/systemd/pull/2493
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cgroup: remove support for NetClass= directive
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tty-ask-password: Split out password sending
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Coredump fixes and more
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Support for net_cls.class_id through the NetClass= configuration directive
has been added in v227 in preparation for a per-unit packet filter mechanism.
However, it turns out the kernel people have decided to deprecate the net_cls
and net_prio controllers in v2. Tejun provides a comprehensive justification
for this in his commit, which has landed during the merge window for kernel
v4.5:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd1060a1d671
As we're aiming for full support for the v2 cgroup hierarchy, we can no
longer support this feature. Userspace tool such as nftables are moving over
to setting rules that are specific to the full cgroup path of a task, which
obsoletes these controllers anyway.
This commit removes support for tweaking details in the net_cls controller,
but keeps the NetClass= directive around for legacy compatibility reasons.
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Corrects an incompatibility introduced with 36c16a7cdd6c33d7980efc2cd6a2211941f302b4.
Fixes: #2537
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Let's make things more obvious by placing the parse_usec() invocation directly in config_parse_service_timeout().
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Let's add an extra-safety net and change UID/GID to the "systemd-coredump" user when processing coredumps from system
user. For coredumps of normal users we keep the current logic of processing the coredumps from the user id the coredump
was created under.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=87354
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The kernel sets RLIMIT_CORE to 0 by default. Let's bump this to unlimited by
default (for systemd itself and all processes we fork off), so that the
coredump hooks have an effect if they honour it.
Bumping RLIMIT_CORE of course would have the effect that "core" files will end
up on the system at various places, if no coredump hook is used. To avoid this,
make sure PID1 sets the core pattern to the empty string by default, so that
this logic is disabled.
This change in defaults should be useful for all systems where coredump hooks
are used, as it allows useful usage of RLIMIT_CORE from these hooks again. OTOH
systems that expect that coredumps are placed under the name "core" in the
current directory will break with this change. Given how questionnable this
behaviour is, and given that no common distro makes use of this by default it
shouldn't be too much of a loss. Also, the old behaviour may be restored by
explicitly configuring a "core_pattern" of "core", and setting the default
system RLIMIT_CORE to 0 again via system.conf.
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With this change processing/saving of coredumps takes the RLIMIT_CORE resource limit of the crashing process into
account, given the user control whether specific processes shall core dump or not, and how large to make the core dump.
Note that this effectively disables core-dumping for now, as RLIMIT_CORE defaults to 0 (i.e. is disabled) for all
system processes.
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This reworks the coredumping logic so that the coredump handler invoked from the kernel only collects runtime data
about the crashed process, and then submits it for processing to a socket-activate coredump service, which extracts a
stacktrace and writes the coredump to disk.
This has a number of benefits: the disk IO and stack trace generation may take a substantial amount of resources, and
hence should better be managed by PID 1, so that resource management applies. This patch uses RuntimeMaxSec=, Nice=, OOMScoreAdjust=
and various sandboxing settings to ensure that the coredump handler doesn't take away unbounded resources from normally
priorized processes.
This logic is also nice since this makes sure the coredump processing and storage is delayed correctly until
/var/systemd/coredump is mounted and writable.
Fixes: #2286
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Previously, using --accept would enable inetd-style socket activation in addition to per-connection operation. This is
now split into two switches: --accept only switches between per-connection or single-instance operation. --inetd
switches between inetd-style or new-style fd passing.
This breaks the interface of the tool, but given that it is a debugging tool shipped in /usr/lib/systemd/ it's not
really a public interface.
This change allows testing new-style per-connection daemons.
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Remove some old cruft
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NEWS: Various clarification and grammar fixes
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configure.ac: Fix help text of --enable-* options
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Fixes #2567
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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Fix for #2467
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As suggested in: https://github.com/systemd/systemd/pull/2542#issuecomment-181877820
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unit, not just services
This moves the StartLimitBurst=, StartLimitInterval=, StartLimitAction=, RebootArgument= from the [Service] section
into the [Unit] section of unit files, and thus support it in all unit types, not just in services.
This way we can enforce the start limit much earlier, in particular before testing the unit conditions, so that
repeated start-up failure due to failed conditions is also considered for the start limit logic.
For compatibility the four options may also be configured in the [Service] section still, but we only document them in
their new section [Unit].
This also renamed the socket unit failure code "service-failed-permanent" into "service-start-limit-hit" to express
more clearly what it is about, after all it's only triggered through the start limit being hit.
Finally, the code in busname_trigger_notify() and socket_trigger_notify() is altered to become more alike.
Fixes: #2467
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edit config updates, and a new NEWS file
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time-util: make timespec_load_nsec() static
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The timespec_load_nsec() function has no callers outside of the
time-util.c, so we can make it static.
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Totally incomplete, but let's get this started.
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For all other files leave the line width at 79 as before. This is a good idea
since we generally don't want text files such as catalog files, unit files or
README/NEWS files to be line-broken at 119 since they are regularly browsed on
text terminals.
While we are at it, also add a couple of comments to the various files.
(Note that .editorconfig doesn't carry line-width information, simply because
the specification doesn't know the concept.)
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After all, the masked unit file error might be returned when enqueuing a unit that is not masked but requires a masked
unit. In this case it should really be clear which unit is meant here.
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This is similar how we already do it for logind or machined.
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Now that requiring of a masked unit results in failure again, downgrade the dependency on /tmp to Wants= again, so that
our suggested way to disable /tmp-on-tmpfs by masking doesn't result in a failing boot.
References: #2315
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