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Commit Graph

109 Commits

Author SHA1 Message Date
Lennart Poettering
91214a37ef fstab-generator: add support for volatile boots
This adds support for a new kernel command line option "systemd.volatile=" that
provides the same functionality that systemd-nspawn's --volatile= switch
provides, but for host systems (i.e. systems booting with a kernel).

It takes the same parameter and has the same effect.

In order to implement systemd.volatile=yes a new service
systemd-volatile-root.service is introduced that only runs in the initrd and
rearranges the root directory as needed to become a tmpfs instance. Note that
systemd.volatile=state is implemented different: it simply generates a
var.mount unit file that is part of the normal boot and has no effect on the
initrd execution.

The way this is implemented ensures that other explicit configuration for /var
can always override the effect of these options.  Specifically, the var.mount
unit is generated in the "late" generator directory, so that it only is in
effect if nothing else overrides it.
2016-12-21 19:09:29 +01:00
Zbigniew Jędrzejewski-Szmek
953bf4604f units: add system-update-cleanup.service to guard against offline-update loops
Note: the name is "system-update-cleanup.service" rather than
"system-update-done.service", because it should not run normally, and also
because there's already "systemd-update-done.service", and having them named
so similarly would be confusing.

In https://bugzilla.redhat.com/show_bug.cgi?id=1395686 the system repeatedly
entered system-update.target on boot. Because of a packaging issue, the tool
that created the /system-update symlink could be installed without the service
unit that was supposed to perform the upgrade (and remove the symlink). In
fact, if there are no units in system-update.target, and /system-update symlink
is created, systemd always "hangs" in system-update.target. This is confusing
for users, because there's no feedback what is happening, and fixing this
requires starting an emergency shell somehow, and also knowing that the symlink
must be removed. We should be more resilient in this case, and remove the
symlink automatically ourselves, if there are no upgrade service to handle it.

This adds a service which is started after system-update.target is reached and
the symlink still exists. It nukes the symlink and reboots the machine. It
should subsequently boot into the default default.target.

This is a more general fix for
https://bugzilla.redhat.com/show_bug.cgi?id=1395686 (the packaging issue was
already fixed).
2016-11-29 01:40:34 -05:00
Franck Bui
84a69ca9ba unit: drop console-shell.service (#4298) (#4325)
console-shell.service was supposed to be useful for normal clean boots
(i.e. multi-user.target or so), as a replacement for logind/getty@.service for
simpler use cases.

But due to the lack of documentation and sanity check one can easily be
confused and enable this service in // with getty@.service.

In this case we end up with both services sharing the same tty which ends up in
strange results.

Even worse, console-shell.service might be failing while getty@.service tries
to acquire the terminal which ends up in the system to poweroff since
console-shell.service uses:

  "ExecStopPost=-/usr/bin/systemctl poweroff".

Another issue: this service doesn't work well if plymouth is also used since it
lets the splash screen program run and mess the tty (at least a "plymouth quit"
is missing).

So let's kill it for now.
2016-10-10 12:06:26 +02:00
Daniel Mack
232c84b2d2 Remove systemd-bootchart
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.
2016-02-23 13:30:09 +01:00
Daniel Mack
798c486fbc remove bus-proxyd
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.
2016-02-12 19:10:01 +01:00
Lennart Poettering
3c171f0b1e coredump: rework coredumping logic
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
2016-02-10 16:08:32 +01:00
Tom Gundersen
8ee07361d0 units: .gitignore: units - ignore tmp.mount
This is a follow-up to 409c2a13fd.
2015-10-15 19:28:07 +02:00
Lennart Poettering
d35c1bb1f4 rfkill: rework and make it listen on /dev/rfkill
With this rework we introduce systemd-rfkill.service as singleton that
is activated via systemd-rfkill.socket that listens on /dev/rfkill. That
way, we get notified each time a new rfkill device shows up or changes
state, in which case we restore and save its current setting to disk.

This is nicer than the previous logic, as this means we save/restore
state even of rfkill devices that are around only intermittently, and
save/restore the state even if the system is shutdown abruptly instead
of cleanly.

This implements what I suggested in #1019 and obsoletes it.
2015-10-01 16:21:09 +02:00
Alban Crequy
287419c119 containers: systemd exits with non-zero code
When a systemd service running in a container exits with a non-zero
code, it can be useful to terminate the container immediately and get
the exit code back to the host, when systemd-nspawn returns. This was
not possible to do. This patch adds the following to make it possible:

- Add a read-only "ExitCode" property on PID 1's "Manager" bus object.
  By default, it is 0 so the behaviour stays the same as previously.
- Add a method "SetExitCode" on the same object. The method fails when
  called on baremetal: it is only allowed in containers or in user
  session.
- Add support in systemctl to call "systemctl exit 42". It reuses the
  existing code for user session.
- Add exit.target and systemd-exit.service to the system instance.
- Change main() to actually call systemd-shutdown to exit() with the
  correct value.
- Add verb 'exit' in systemd-shutdown with parameter --exit-code
- Update systemctl manpage.

I used the following to test it:

| $ sudo rkt --debug --insecure-skip-verify run \
|            --mds-register=false --local docker://busybox \
|            --exec=/bin/chroot -- /proc/1/root \
|            systemctl --force exit 42
| ...
| Container rkt-895a0cba-5c66-4fa5-831c-e3f8ddc5810d failed with error code 42.
| $ echo $?
| 42

Fixes https://github.com/systemd/systemd/issues/1290
2015-09-21 17:32:45 +02:00
Tom Gundersen
b5acb956d1 units: make networkd pull in its own .busname unit
The daemon requires the busname unit to operate (on kdbus systems),
since it contains the policy that allows it to acquire its service
name.

This fixes https://bugs.freedesktop.org/show_bug.cgi?id=90287
2015-05-15 22:59:43 +02:00
Lennart Poettering
96d9117ad2 fsck: remove fsckd again, but keep the door open for external replacement
For a longer discussion see this:

http://lists.freedesktop.org/archives/systemd-devel/2015-April/030175.html

This introduces /run/systemd/fsck.progress as a simply
AF_UNIX/SOCK_STREAM socket. If it exists and is connectable we'll
connect fsck's -c switch with it. If external programs want to get
progress data they should hence listen on this socket and will get
all they need via that socket. To get information about the connecting
fsck client they should use SO_PEERCRED.

Unless /run/systemd/fsck.progress is around and connectable this change
reverts back to v219 behaviour where we'd forward fsck output to
/dev/console on our own.
2015-04-28 17:30:00 +02:00
Daniel Mack
d6b07ef796 shutdownd: kill the old implementation
Not that all functionality has been ported over to logind, the old
implementation can be removed. There goes one of the oldest parts of
the systemd code base.
2015-04-24 17:48:12 +02:00
Dimitri John Ledkov
defa8e675b resolved: Do not add .busname dependencies, when compiling without kdbus. 2015-03-19 17:27:39 +01:00
Didier Roche
66f2ff06ca Add fsckd service and socket, retarget systemd-fsck
systemd-fsckd can be socket-activated by systemd-fsck process. Reflect that
in the different unit files.
2015-02-18 16:33:46 +01:00
Lennart Poettering
3d7415f43f import: introduce new mini-daemon systemd-importd, and make machinectl a client to it
The old "systemd-import" binary is now an internal tool. We still use it
as asynchronous backend for systemd-importd. Since the import tool might
require some IO and CPU resources (due to qcow2 explosion, and
decompression), and because we might want to run it with more minimal
priviliges we still keep it around as the worker binary to execute as
child process of importd.

machinectl now has verbs for pulling down images, cancelling them and
listing them.
2015-01-22 04:02:07 +01:00
David Herrmann
a8a1a43f48 bus-proxy: turn into multi-threaded daemon
Instead of using Accept=true and running one proxy for each connection, we
now run one proxy-daemon with a thread per connection. This will enable us
to share resources like policies in the future.
2015-01-17 14:00:19 +01:00
Tom Gundersen
65eb4378c3 systemd-hwdb: introduce new tool
This pulls out the hwdb managment from udevadm into an independent tool.

The old code is left in place for backwards compatibility, and easy of
testing, but all documentation is dropped to encourage use of the new
tool instead.
2014-12-18 15:37:27 +01:00
Lennart Poettering
795bc7e791 gitignore: hide some more files 2014-12-10 00:49:35 +01:00
WaLyong Cho
c18c2a0ea1 gitignore: ignore generated systemd-bootchart.service 2014-12-04 20:43:28 +01:00
Didier Roche
a1405db67c machine-id-commit: add unit file
The unit file only active the machine-id-commit helper if /etc is mounted
writable and /etc/machine-id is an independant mount point (should be a tmpfs).
2014-12-03 03:41:19 +01:00
Daniel Buch
d6bc8348d5 readahead: wipe out readahead 2014-09-25 16:39:18 +02:00
Zbigniew Jędrzejewski-Szmek
9c0804278b units: m4 is not needed for rescue.service 2014-08-31 00:00:06 -04:00
Ivan Shapovalov
42483a7474 hibernate-resume: add a tool to write a device node's major:minor to /sys/power/resume.
This can be used to initiate a resume from hibernation by path to a swap
device containing the hibernation image.

The respective templated unit is also added. It is instantiated using
path to the desired resume device.
2014-08-26 22:19:54 +02:00
Zbigniew Jędrzejewski-Szmek
ad95fd1d2b journal-remote: add units and read certs from default locations 2014-07-15 22:23:49 -04:00
Lennart Poettering
418b9be500 firstboot: add new component to query basic system settings on first boot, or when creating OS images offline
A new tool "systemd-firstboot" can be used either interactively on boot,
where it will query basic locale, timezone, hostname, root password
information and set it. Or it can be used non-interactively from the
command line when prepareing disk images for booting. When used
non-inertactively the tool can either copy settings from the host, or
take settings on the command line.

$ systemd-firstboot --root=/path/to/my/new/root --copy-locale --copy-root-password --hostname=waldi

The tool will be automatically invoked (interactively) now on first boot
if /etc is found unpopulated.

This also creates the infrastructure for generators to be notified via
an environment variable whether they are running on the first boot, or
not.
2014-07-07 15:25:55 +02:00
Lennart Poettering
ecde7065f7 units: rebuild /etc/passwd, the udev hwdb and the journal catalog files on boot
Only when necessary of course, nicely guarded with the new
ConditionNeedsUpdate= condition we added.
2014-06-13 13:26:32 +02:00
Lennart Poettering
8ea48dfcd3 update-done: add minimal tool to manage system updates for /etc and /var, if /usr has changed
In order to support offline updates to /usr, we need to be able to run
certain tasks on next boot-up to bring /etc and /var in line with the
updated /usr. Hence, let's devise a mechanism how we can detect whether
/etc or /var are not up-to-date with /usr anymore: we keep "touch
files" in /etc/.updated and /var/.updated that are mtime-compared with
/usr. This means:

Whenever the vendor OS tree in /usr is updated, and any services that
shall be executed at next boot shall be triggered, it is sufficient to
update the mtime of /usr itself. At next boot, if /etc/.updated and/or
/var/.updated is older than than /usr (or missing), we know we have to
run the update tools once. After that is completed we need to update the
mtime of these files to the one of /usr, to keep track that we made the
necessary updates, and won't repeat them on next reboot.

A subsequent commit adds a new ConditionNeedsUpdate= condition that
allows checking on boot whether /etc or /var are outdated and need
updating.

This is an early step to allow booting up with an empty /etc, with
automatic rebuilding of the necessary cache files or user databases
therein, as well as supporting later updates of /usr that then propagate
to /etc and /var again.
2014-06-13 13:26:32 +02:00
Tom Gundersen
091a364c80 resolved: add daemon to manage resolv.conf
Also remove the equivalent functionality from networkd.
2014-05-19 18:14:56 +02:00
Kay Sievers
a91df40e69 timesyncd: add unit and man page 2014-04-29 09:51:53 +02:00
Tom Gundersen
3a67e927e3 networkd-wait-online: improve interoptability and enable by default
To make sure we don't delay boot on systems where (some) network links are managed by someone else
we don't block if something else has successfully brought up a link.

We will still block until all links we are aware of that are  managed by networkd have been
configured, but if no such links exist, and someone else have configured a link sufficiently
that it has a carrier, it may be that the link is ready so we should no longer block.

Note that in all likelyhood the link is not ready (no addresses/routes configured),
so whatever network managment daemon configured it should provide a similar wait-online
service to block network-online.target until it is ready.

The aim is to block as long as we know networking is not fully configured, but no longer. This
will allow systemd-networkd-wait-online.service to be enabled on any system, even if we don't
know whether networkd is the main/only network manager.

Even in the case networking is fully configured by networkd, the default behavior may not be
sufficient: if two links need to be configured, but the first is fully configured before the
second one appears we will assume the network is up. To work around that, we allow specifying
specific devices to wait for before considering the network up.

This unit is enabled by default, just like systemd-networkd, but will only be pulled in if
anyone pulls in network-online.target.
2014-04-24 00:23:07 +02:00
Kay Sievers
0fbedd1fdc remove bus-driverd, the interface is now handled natively by bus-proxyd 2014-04-22 19:31:26 +02:00
Kay Sievers
8b255ecd99 pam_systemd: export DBUS_SESSION_BUS_ADDRESS 2014-01-08 18:11:37 +08:00
Marc-Antoine Perennou
08c51903fb gitignore: add back user@.service 2013-12-28 15:19:25 +01:00
Zbigniew Jędrzejewski-Szmek
4acbce7979 build-sys: fix generation of user@.service 2013-12-27 12:12:41 -05:00
Lennart Poettering
15e913230c bus: install unit files for new driver service 2013-12-17 15:42:33 +01:00
Lennart Poettering
7c9a6f9063 bus: install systemd-bus-proxyd unit files for compatibility with dbus1 2013-12-13 20:49:57 +01:00
Tom Gundersen
f579559b3a networkd: add a basic network daemon
This daemon listens for and configures network devices tagged with
'systemd-networkd'. By default, no devices are tagged so this daemon
can safely run in parallel with existing network daemons/scripts.

Networks are configured in /etc/systemd/network/*.network. The first .network
file that matches a given link is applied. The matching logic is similar to
the one for .link files, but additionally supports matching on interface name.

The mid-term aim is to provide an alternative to ad-hoc scripts currently used
in initrd's and for wired setups that don't change much (e.g., as seen on
servers/and some embedded systems).

Currently, static addresses and a gateway can be configured.

Example .network file:

[Match]
Name=wlp2s0

[Network]
Description=My Network
Gateway=192.168.1.1
Address=192.168.1.23/24
Address=fe80::9aee:94ff:fe3f:c618/64
2013-11-09 23:41:17 +01:00
Lennart Poettering
04d3927924 machinectl: add new command to spawn a getty inside a container 2013-10-31 01:43:38 +01:00
Lennart Poettering
3990f24765 rfkill: add new rfkill tool to save/restore rfkill state across reboots
This works analogous to the existing backlight and random seed services
2013-10-14 04:31:49 +02:00
Lennart Poettering
3731acf1ac backlight: add minimal tool to save/restore screen brightness across reboots
As many laptops don't save/restore screen brightness across reboots,
let's do this in systemd with a minimal tool, that restores the
brightness as early as possible, and saves it as late as possible. This
will cover consoles and graphical logins, but graphical desktops should
do their own per-user stuff probably.

This only touches firmware brightness controls for now.
2013-08-14 01:57:02 +02:00
Tom Gundersen
edeb68c53f static-nodes: move creation of static nodes from udevd to tmpfiles
As of kmod v14, it is possible to export the static node information from
/lib/modules/`uname -r`/modules.devname in tmpfiles.d(5) format.

Use this functionality to let systemd-tmpfilesd create the static device nodes
at boot, and drop the functionality from systemd-udevd.

As an effect of this we can move from systemd-udevd to systemd-tmpfiles-setup-dev:

 * the conditional CAP_MKNOD (replaced by checking if /sys is mounted rw)
 * ordering before local-fs-pre.target (see 89d09e1b5c)
2013-07-08 21:26:24 +02:00
Lennart Poettering
1ee306e124 machined: split out machine registration stuff from logind
Embedded folks don't need the machine registration stuff, hence it's
nice to make this optional. Also, I'd expect that machinectl will grow
additional commands quickly, for example to join existing containers and
suchlike, hence it's better keeping that separate from loginctl.
2013-07-02 03:47:23 +02:00
Lennart Poettering
3f92e4b4b6 utmp: turn systemd-update-utmp-shutdown.service into a normal runtime service
With this change systemd-update-utmp-shutdown.service is replaced by
systemd-update-utmp.service which is started at boot and stays around
until shutdown. This allows us to properly order the unit against both
/var/log and auditd.

https://bugzilla.redhat.com/show_bug.cgi?id=853104
https://bugs.freedesktop.org/show_bug.cgi?id=64365
2013-05-16 00:19:03 +02:00
Lennart Poettering
c35b956d34 units: rework systemd-random-seed-{load,save}.service to be a single service
That way ordering it with MountsRequiredFor= works properly, as this no
longer results in mount units start requests to be added to the shutdown
transaction that conflict with stop requests for the same unit.
2013-05-15 22:38:51 +02:00
Lennart Poettering
05947befce units: add an easy-to-use unit template file systemd-nspawn@.service for running containers as system services 2013-04-30 08:36:02 -03:00
Tom Gundersen
3e8037f17c units: rename systemd-static-nodes -> systemd-tmpfiles-setup-dev
This is really just a special case of systemd-tmpfiles-setup, moreover it could easily create more than static nodes.
2013-04-22 21:57:39 +02:00
Kay Sievers
4e6db59202 bus: rename KDBUS_CMD_FNAME_POLICY_NONE -> KDBUS_CMD_FNAME_POLICY_OPEN 2013-04-12 21:04:49 +02:00
Michael Biebl
b39ad46de4 Update .gitignore
for the changes in 7b40ce553f
2013-03-11 17:08:03 +01:00
Zbigniew Jędrzejewski-Szmek
652e737517 build-sys: keep intermediate files
Sometimes it is useful to look at them, and they don't take
up any significant amount of space. Keeping them also avoids
the message about files being removed at the end of make
run.
2013-01-29 21:17:40 -05:00
Lennart Poettering
b1c4ca25bf build-sys: make rc-local support part of SYSV compat
This also drops automatic selection of the rc local scripts
based on the local distro. Distributions now should specify the paths
of the rc-local and halt-local scripts on the configure command line.
2013-01-04 23:26:20 +01:00