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I think I am developing OCD... Let's fix this before this actually gets used in
the wild.
A follow-up for #3986 (5fc9e4abb41e7f58f6c308f54881c596713fba75).
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networkd: various fixes for route configuration
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Journald dynamic users
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https://bugs.freedesktop.org/show_bug.cgi?id=97347
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Dynamic users should be treated like system users, and their logs
should end up in the main system journal.
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Also return the first error, since it's most likely to be interesting.
If unlink fails, symlink will usually return EEXIST.
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The parsing functions for [User]TasksMax were inconsistent. Empty string and
"infinity" were interpreted as no limit for TasksMax but not accepted for
UserTasksMax. Update them so that they're consistent with other knobs.
* Empty string indicates the default value.
* "infinity" indicates no limit.
While at it, replace opencoded (uint64_t) -1 with CGROUP_LIMIT_MAX in TasksMax
handling.
v2: Update empty string to indicate the default value as suggested by Zbigniew
Jędrzejewski-Szmek.
v3: Fixed empty UserTasksMax handling.
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Add udev property for horizontal wheel click angles
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add RemoveIPC= service file setting
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The Logitech MX Master has a horizontal scroll wheel with a different click
angle than the vertical one. Add a new property for this case, we can't add
values to the normal one without risking upsetting existing parsers.
Fixes #3947
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Rework 17eb9a9ddba3f03fcba33445c1c1eedeb948da04 a bit.
Let's make sure we don't clobber the input parameter args[1], following our
coding style to not clobber parameters unless explicitly indicated. (in
particular, as we don't want to have our changes appear in the command line
shown in "ps"...)
No functional change.
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Inspired from the new logic in nss-systemd let's make sure we don't end up
deadlocking in nss-mymachines either in case dbus-daemon tries to a look up a
name and we want to connect to the bus.
This case is much simpler though, as there's no point in resolving virtual
machine UIDs by dbus-daemon as those should never be able to connect to the
host's busses.
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dbus-daemon does NSS name look-ups in order to enforce its bus policy. This
might dead-lock if an NSS module use wants to use D-Bus for the look-up itself,
like our nss-systemd does. Let's work around this by bypassing bus
communication in the NSS module if we run inside of dbus-daemon. To make this
work we keep a bit of extra state in /run/systemd/dynamic-uid/ so that we don't
have to consult the bus, but can still resolve the names.
Note that the normal codepath continues to be via the bus, so that resolving
works from all mount namespaces and is subject to authentication, as before.
This is a bit dirty, but not too dirty, as dbus daemon is kinda special anyway
for PID 1.
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This adds the boolean RemoveIPC= setting to service, socket, mount and swap
units (i.e. all unit types that may invoke processes). if turned on, and the
unit's user/group is not root, all IPC objects of the user/group are removed
when the service is shut down. The life-cycle of the IPC objects is hence bound
to the unit life-cycle.
This is particularly relevant for units with dynamic users, as it is essential
that no objects owned by the dynamic users survive the service exiting. In
fact, this patch adds code to imply RemoveIPC= if DynamicUser= is set.
In order to communicate the UID/GID of an executed process back to PID 1 this
adds a new "user lookup" socket pair, that is inherited into the forked
processes, and closed before the exec(). This is needed since we cannot do NSS
from PID 1 due to deadlock risks, However need to know the used UID/GID in
order to clean up IPC owned by it if the unit shuts down.
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This makes it easier to discern the relevant and obsolete parts of the vtables,
and in particular helps when comparing introspection data with the actual
vtable definitions.
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The default route table used by sd-netlink (and iproute2) is
RT_TABLE_MAIN, not RT_TABLE_DEFAULT. Ensure networkd has the same idea.
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link_messages is used during link configuration to advance the link
state machine through SETTING_ADDRESSES -> SETTING_ROUTES -> CONFIGURED.
If a route expires in the middle of this, it is possible for
link_messages to hit zero inside route_expire_callback, rather than in
route_handler or address_handler where it would trigger the next step in
configuration. Should this happen, the link will not complete
configuration, and it may not have its static routes configured.
Since route_expire_callback does not need to do anything once the
expired route has been removed from the kernel, it is safe to simply not
account for the netlink request.
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Make journalctl more flexible
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Currently in the journal you get messages without context like:
systemd-sysv-generator[$pid]: Failed to build name: Invalid argument
When parsing the init script, show the file and line number where the
error was found. At the same time, add more context information if
available.
Thus turning the message into something like:
systemd-sysv-generator[$pid]: [/etc/init.d/root-system-proofd:13] Could not build name for facility $network,: Invalid argument
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If journals get into a closed state like when rotate fails due to
ENOSPC, when space is made available it currently goes unnoticed leaving
the journals in a closed state indefinitely.
By calling system_journal_open() on entry to find_journal() we ensure
the journal has been opened/created if possible.
Also moved system_journal_open() up to after open_journal(), before
find_journal().
Fixes https://github.com/systemd/systemd/issues/3968
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$ ls -l /dev/disk/by-id/nvme*
lrwxrwxrwx. 1 root root 13 Aug 17 04:25 /dev/disk/by-id/nvme-HUSPR3216AHP301_STM0001B6780 -> ../../nvme0n1
lrwxrwxrwx. 1 root root 15 Aug 17 04:25 /dev/disk/by-id/nvme-HUSPR3216AHP301_STM0001B6780-part1 -> ../../nvme0n1p1
https://github.com/systemd/systemd/issues/1453
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=779ff75617099f4defe14e20443b95019a4c5ae8
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build-sys: clarify that --disable-efi is about sd-boot and bootctl
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This will now also handle `journalctl --directory=/var/log/journal`
properly.
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After `journalctl -D /var/log/journal` "--directory", "--file",
"--machine" and "--root" should not be available for completion, because
they are exclusive. But multiple `--file` arguments are allowed.
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If no result parameter is provided, do not attempt to write the
found/newly-created route to it. This is presently not an issue as all
callers currently provide a non-NULL result parameter, however we should
do this for symmetry with address_add and future code robustness.
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core: add cgroup CPU controller support on the unified hierarchy
(zj: merging not squashing to make it clear against which upstream this patch was developed.)
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If wasn't obvious what the effect of --disable-efi was without
going through Makefile.am.
Fixes #3959.
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Random numbers are provided by the host kernel, we don't need to do anything.
https://bugzilla.redhat.com/show_bug.cgi?id=1329124
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In 68c4f6d the following was added:
local -a _modes; _modes=("--user" "--system")
local _sys_service_mgr=${${words:*_modes}[(R)(${(j.|.)_modes})]:---system}
With the following comment:
> If neither are on the line, --system is set; for system services to be
> completed.
But it does not work as documented:
% _modes=(--user --system)
% words=()
% echo ${${words:*_modes}[(R)(${(j.|.)_modes})]:---system}
However, it should not use `--system` in that case anyway, so this patch
removes the part that should cause a default to be used and adds some
comments.
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This only completes fields from `journalctl --user` in _journal_fields when `--user`
is used.
It also changes $_sys_service_mgr to include both `--system` and `--user`,
because `journalctl` behaves different from `systemctl` in this regard.
No attempt is made to filter out invalid combinations, e.g. when using both
`--directory` and `--system` (see https://github.com/systemd/systemd/issues/3949).
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It is useful to look at a (possibly inactive) container or other os tree
with --root=/path/to/container. This is similar to specifying
--directory=/path/to/container/var/log/journal --directory=/path/to/container/run/systemd/journal
(if using --directory multiple times was allowed), but doesn't require
as much typing.
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The directory argument that is given to sd_j_o_d was ignored when
SD_JOURNAL_OS_ROOT was given, and directories relative to the root of the host
file system were used. With that flag, sd_j_o_d should do the same as
sd_j_open_container: use the path as "prefix", i.e. the directory relative to
which everything happens.
Instead of touching sd_j_o_d, journal_new is fixed to do what sd_j_o_c
was doing, and treat the specified path as prefix when SD_JOURNAL_OS_ROOT is
specified.
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There is no reason not to. This makes journalctl -D ... --system work,
useful for example when viewing files from a deactivated container.
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… in preparation for future changes.
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zsh completion: handle --user mode when filtering by state and in journalctl commands
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This uses the same mechanism from _systemctl to inject `--user` into the
`journalctrl -F _EXE` call to list executables.
Before this patch the "commands" section would list executables from
system units always.
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Use `$_sys_service_mgr` to handle `--user`, so that `systemctl --user
stop` will correctly filter the active (user) units. Before this patch,
only user units that also exist as system units and are stoppable there
would be listed.
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The kernel treats values below a certain threshold (minfmt->min_coredump
which is initialized do ELF_EXEC_PAGESIZE, which varies between architectures,
but is usually the same as PAGE_SIZE) as disabling coredumps [1].
Any core image below ELF_EXEC_PAGESIZE will yield an invalid backtrace anyway [2],
so follow the kernel and not try to parse or store such images.
[1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/fs/coredump.c#n660
[2] systemd-coredump[16260]: Process 16258 (sleep) of user 1002 dumped core.
Stack trace of thread 16258:
#0 0x00007f1d8b3d3810 n/a (n/a)
https://bugzilla.redhat.com/show_bug.cgi?id=1309172#c19
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Add hwdb parser to check for inconsistencies
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Under NixOS, the config_path /etc/systemd/system is a symlink to
/etc/static/systemd/system. Commands such as `systemctl list-unit-files`
and `systemctl is-enabled` did not work as the symlink was not followed.
This does not affect how symlinks are treated within the config_path
directory.
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the /) (#3934)
Fixes #3927.
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