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Take away kernel keyring access, CPU emulation system calls and various debug
system calls from the various daemons we have.
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Add a line
SystemCallFilter=~@clock @module @mount @obsolete @raw-io ptrace
for daemons shipped by systemd. As an exception, systemd-timesyncd
needs @clock system calls and systemd-localed is not privileged.
ptrace(2) is blocked to prevent seccomp escapes.
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Secure daemons shipped by systemd by enabling MemoryDenyWriteExecute.
Closes: #3459
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In the same vein as commit ac59f0c12c117b9bb5b7e17f33987b0107791239 which added
the --wait option to the emergency service, this patch makes sure that plymouth
has exited before entering into the rescue mode.
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In order to support stateless systems that support offline /usr updates
properly, let's restore the ConditionNeesUpdate=/etc line that makes sure we
are run when /usr is updated and this update needs to be propagated to the
/etc/ld.so.conf file stored in /etc.
This reverts part of #2859, which snuck this change in, but really shouldn't
have.
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Add a synchronization point so that custom initramfs units can run
after the root device becomes available, before it is fsck'd and
mounted.
This is useful for custom initramfs units that may modify the
root disk partition table, where the root device is not known in
advance (it's dynamically selected by the generators).
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fsck determines wheter an automatic quotacheck should be executed.
Hence fsck service needs to run before quotacheck service.
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When enabling ForwardToSyslog=yes, the syslog.socket is active when entering
emergency mode. Any log message then triggers the start of rsyslog.service (or
other implementation) along with its dependencies such as local-fs.target and
sysinit.target. As these might fail themselves (e. g. faulty /etc/fstab), this
breaks the emergency mode.
This causes syslog.socket to fail with "Failed to queue service startup job:
Transition is destructive".
Add Conflicts=syslog.socket to emergency.service to make sure the socket is
stopped when emergency.service is started.
Fixes #266
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nspawn automatic user namespaces
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Container images from Debian or suchlike contain device nodes in /dev. Let's
make sure we can clone them properly, hence pass CAP_MKNOD to machined.
Fixes: #2867 #465
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Now that user namespacing is supported in a pretty automatic way, actually turn
it on by default if the systemd-nspawn@.service template is used.
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That way we can be sure that local users are logged out before the network is
shut down when the system goes down, so that SSH session should be ending
cleanly before the system goes down.
Fixes: #2390
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fix issue #2930
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With the current "Type=forking", systemd tries to guess the PID it
should wait on at reboot (because we have no "PIDFile="). Depending on
how wrong the guess is, we can end up hanging forever at reboot.
Asking it not to do that eliminates the problem.
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Also drop ConditionNeedsUpdate=|/etc. Regardless if system is updated
online or offline, updating dynamic loader cache should always be
responsibility of packaging tools/scripts.
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When using `%I` for instances of `systemd-nspawn@.service`, the result
will be `systemd-nspawn` trying to launch a container named e.g.
`fedora/23` instead of `fedora-23`.
Using `%i` instead prevents escaping `-` in a container name and uses
the unmodified container name from the machine store.
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Remove systemd-bootchart
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This commit rips out systemd-bootchart. It will be given a new home, outside
of the systemd repository. The code itself isn't actually specific to
systemd and can be used without systemd even, so let's put it somewhere
else.
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As kdbus won't land in the anticipated way, the bus-proxy is not needed in
its current form. It can be resurrected at any time thanks to the history,
but for now, let's remove it from the sources. If we'll have a similar tool
in the future, it will look quite differently anyway.
Note that stdio-bridge is still available. It was restored from a version
prior to f252ff17, and refactored to make use of the current APIs.
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units: don't try to mount the mqueue fs if we lack the privileges for it
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See https://github.com/systemd/systemd/pull/2576#discussion-diff-52592680
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See:
https://lists.freedesktop.org/archives/systemd-devel/2016-February/035740.html
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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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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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journal-remote: add SupplementaryGroups to systemd-journal-upload.service
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As discussed on the ML:
http://lists.freedesktop.org/archives/systemd-devel/2016-January/035594.html
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With this kmod commit, modules.devname will be empty by default instead of
containing just a comment:
https://git.kernel.org/cgit/utils/kernel/kmod/kmod.git/commit/?id=4c30a11d5f
Refine the startup condition of kmod-static-nodes.service to not run needlessly
if the list is empty.
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The user manager is still limited by its parent slice user-UID.slice,
which defaults to 4096 tasks. However, it no longer has an additional
limit of 512 tasks.
Fixes #1955.
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Apparently, util-linux' mount command implicitly drops the smack-related
options anyway before passing them to the kernel, if the kernel doesn't
know SMACK, hence there's no point in duplicating this in systemd.
Fixes #1696
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networkd: (de)serialize more state and support expiring routes
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Otherwise we might run into deadlocks, when journald blocks on the
notify socket on PID 1, and PID 1 blocks on IPC to dbus-daemon and
dbus-daemon blocks on logging to journald. Break this cycle by making
sure that journald never ever blocks on PID 1.
Note that this change disables support for event loop watchdog support,
as these messages are sent in blocking style by sd-event. That should
not be a big loss though, as people reported frequent problems with the
watchdog hitting journald on excessively slow IO.
Fixes: #1505.
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That way it's in sync with the other SMACK label settings.
https://github.com/systemd/systemd/pull/1664#issuecomment-150891270
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If SMACK is enabled, 'smackfsroot=*' option should be specified when
/tmp is mounted since many non-root processes use /tmp for temporary
usage. If not, /tmp is labeled as '_' and smack denial occurs when
writing.
In order to do that, 'SmackFileSystemRoot=*' is newly added into
tmp.mount.
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/dev/loop*p* block devices are of the "blkext" subsystem, not of loop,
hence whitelist this too.
Fixes #1446
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This reverts commit 409c2a13fd65692c611b7bcaba12e908ef7cf1e5.
It breaks the bootup of systems which enable smack at compile time, but have no
smack enabled in the kernel. This needs a different solution.
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This is a follow-up to 409c2a13fd656.
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units: add 'smackfsroot=*' option into tmp.mount when SMACK is enabled
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If SMACK is enabled, 'smackfsroot=*' option should be specified in
tmp.mount file since many non-root processes use /tmp for temporary
usage. If not, /tmp is labeled as '_' and smack denial occurs when
writing.
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There's no concept of ctrl-alt-del for user systemd instances, hence
don't suggest it woud make sense to symlink the unit to it.
Fixes #1525.
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Add support for naming fds for socket activation and more
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Usually we try to properly uppercase first characters in the
description, do so here, too. Also, keep it close to the string used in
systemd-networkd.service.
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