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Commit Graph

72 Commits

Author SHA1 Message Date
Lennart Poettering
d81afec1c9 core: split up "starting" manager state into "initializing" and "starting"
We'll stay in "initializing" until basic.target has reached, at which
point we will enter "starting".

This is preparation so that we can change the startip timeout to only
apply to the first phase of startup, not the full procedure.
2014-08-22 18:10:31 +02:00
Lennart Poettering
2928b0a863 core: add support for a configurable system-wide start-up timeout
When this system-wide start-up timeout is hit we execute one of the
failure actions already implemented for services that fail.

This should not only be useful on embedded devices, but also on laptops
which have the power-button reachable when the lid is closed. This
devices, when in a backpack might get powered on by accident due to the
easily reachable power button. We want to make sure that the system
turns itself off if it starts up due this after a while.

When the system manages to fully start-up logind will suspend the
machine by default if the lid is closed. However, in some cases we don't
even get as far as logind, and the boot hangs much earlier, for example
because we ask for a LUKS password that nobody ever enters.

Yeah, this is a real-life problem on my Yoga 13, which has one of those
easily accessible power buttons, even if the device is closed.
2014-08-22 18:10:31 +02:00
Stef Walter
283868e1dc core: Verify systemd1 DBus method callers via polkit
DBus methods that retrieve information can be called by anyone.

DBus methods that modify state of units are verified via polkit
action: org.freedesktop.systemd1.manage-units

DBus methods that modify state of unit files are verified via polkit
action: org.freedesktop.systemd1.manage-unit-files

DBus methods that reload the entire daemon state are verified via polkit
action: org.freedesktop.systemd1.reload-daemon

DBus methods that modify job state are callable from the clients
that started the job.

root (ie: CAP_SYS_ADMIN) can continue to perform all calls, property
access etc. There are several DBus methods that can only be
called by root.

Open up the dbus1 policy for the above methods.

(Heavily modified by Lennart, making use of the new
bus_verify_polkit_async() version that doesn't force us to always
pass the original callback around. Also, interactive auhentication must
be opt-in, not unconditional, hence I turned this off.)
2014-08-18 18:08:28 +02:00
Zbigniew Jędrzejewski-Szmek
0d8c31ff72 test-engine: fix access to unit load path
Also add a bit of debugging output to help diagnose problems,
add missing units, and simplify cppflags.

Move test-engine to normal tests from manual tests, it should now
work without destroying the system.
2014-07-20 19:48:16 -04:00
Lennart Poettering
e26807239b firstboot: get rid of firstboot generator again, introduce ConditionFirstBoot= instead
As Zbigniew pointed out a new ConditionFirstBoot= appears like the nicer
way to hook in systemd-firstboot.service on first boots (those with /etc
unpopulated), so let's do this, and get rid of the generator again.
2014-07-07 21:05:09 +02:00
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
9a05490933 cgroups: simplify CPUQuota= logic
Only accept cpu quota values in percentages, get rid of period
definition.

It's not clear whether the CFS period controllable per-cgroup even has a
future in the kernel, hence let's simplify all this, hardcode the period
to 100ms and only accept percentage based quota values.
2014-05-22 11:53:12 +09:00
WaLyong Cho
95ae05c0e7 core: add startup resource control option
Similar to CPUShares= and BlockIOWeight= respectively. However only
assign the specified weight during startup. Each control group
attribute is re-assigned as weight by CPUShares=weight and
BlockIOWeight=weight after startup.  If not CPUShares= or
BlockIOWeight= be specified, then the attribute is re-assigned to each
default attribute value. (default cpu.shares=1024, blkio.weight=1000)
If only CPUShares=weight or BlockIOWeight=weight be specified, then
that implies StartupCPUShares=weight and StartupBlockIOWeight=weight.
2014-05-22 07:13:56 +09:00
Lennart Poettering
b2f8b02ec2 core: expose CFS CPU time quota as high-level unit properties 2014-04-25 13:27:25 +02:00
Lennart Poettering
bd8f585b99 core: add a setting to globally control the default for timer unit accuracy 2014-03-24 16:24:07 +01:00
Lennart Poettering
f755e3b74b core: introduce system state enum
The system state knows the states starting →
running/degraded/maintenance → stopping, where:

starting = system startup
running = normal operation
degraded = at least one unit is currently in failed state
maintenance = rescue/emergency mode is active or queued
stopping = system shutdown
2014-03-12 20:55:13 +01:00
Lennart Poettering
517d56b1d0 missing: if RLIMIT_RTTIME is not defined by the libc, then we need a new define for the max number of rlimits, too 2014-03-05 02:31:09 +01:00
Lennart Poettering
4d7213b274 core: move ShowStatus type into the core
Let's make the scope of the show-status stuff a bit smaller, and make it
private to the core, rather than shared API in shared/.
2014-03-03 21:23:12 +01:00
Lennart Poettering
e66cf1a3f9 core: introduce new RuntimeDirectory= and RuntimeDirectoryMode= unit settings
As discussed on the ML these are useful to manage runtime directories
below /run for services.
2014-03-03 17:55:32 +01:00
Lennart Poettering
8f8f05a919 bus: add sd_bus_track object for tracking peers, and port core over to it
This is primarily useful for services that need to track clients which
reference certain objects they maintain, or which explicitly want to
subscribe to certain events. Something like this is done in a large
number of services, and not trivial to do. Hence, let's unify this at
one place.

This also ports over PID 1 to use this to ensure that subscriptions to
job and manager events are correctly tracked. As a side-effect this
makes sure we properly serialize and restore the track list across
daemon reexec/reload, which didn't work correctly before.

This also simplifies how we distribute messages to broadcast to the
direct busses: we only track subscriptions for the API bus and
implicitly assume that all direct busses are subscribed. This should be
a pretty OK simplification since clients connected via direct bus
connections are shortlived anyway.
2014-03-03 02:34:13 +01:00
Lennart Poettering
085afe36cb core: add global settings for enabling CPUAccounting=, MemoryAccounting=, BlockIOAccounting= for all units at once 2014-02-24 23:50:10 +01:00
Lennart Poettering
5ba6985b6c core: allow PIDs to be watched by two units at the same time
In some cases it is interesting to map a PID to two units at the same
time. For example, when a user logs in via a getty, which is reexeced to
/sbin/login that binary will be explicitly referenced as main pid of the
getty service, as well as implicitly referenced as part of the session
scope.
2014-02-07 15:14:36 +01:00
Zbigniew Jędrzejewski-Szmek
cb8ccb2271 manager: also turn on output on unit failure 2014-01-27 23:17:03 -05:00
Zbigniew Jędrzejewski-Szmek
d450b6f2a9 manager: add systemd.show_status=auto mode
When set to auto, status will shown when the first ephemeral message
is shown (a job has been running for five seconds). Then until the
boot or shutdown ends, status messages will be shown.

No indication about the switch is done: I think it should be clear
for the user that first the cylon eye and the ephemeral messages appear,
and afterwards messages are displayed.

The initial arming of the event source was still wrong, but now should
really be fixed.
2014-01-27 23:17:03 -05:00
Lennart Poettering
e3dd987cfc core: allocate a kdbus bus for each systemd instance, if we can 2013-11-30 03:53:42 +01:00
Lennart Poettering
9670d583d3 swap: always track the current real device node of all swap devices, even when not active
This way, we can avoid executing two /bin/swapon jobs to be dispatched
for the same swap device if it is configured for two different paths.

Previously we were just tracking the device nodes of active swap
devices, which would not allow us to recognize the identity of two swap
devices before they are active.

https://bugs.freedesktop.org/show_bug.cgi?id=69835
2013-11-25 22:10:22 +01:00
Lennart Poettering
5bcb0f2ba0 swap: split state machine state ACTIVATING into two
We expect the event on /proc/swaps before we expect the SIGCHILD,
reflect this in the state machine.
2013-11-25 17:40:53 +01:00
Lennart Poettering
752b590500 core: dispatch run queue only if there's nothing else to do
Always read all external events before we decide what we do next.
2013-11-25 17:40:53 +01:00
Lennart Poettering
718db96199 core: convert PID 1 to libsystemd-bus
This patch converts PID 1 to libsystemd-bus and thus drops the
dependency on libdbus. The only remaining code using libdbus is a test
case that validates our bus marshalling against libdbus' marshalling,
and this dependency can be turned off.

This patch also adds a couple of things to libsystem-bus, that are
necessary to make the port work:

- Synthesizing of "Disconnected" messages when bus connections are
  severed.

- Support for attaching multiple vtables for the same interface on the
  same path.

This patch also fixes the SetDefaultTarget() and GetDefaultTarget() bus
calls which used an inappropriate signature.

As a side effect we will now generate PropertiesChanged messages which
carry property contents, rather than just invalidation information.
2013-11-20 20:52:36 +01:00
Thomas Hindoe Paaboel Andersen
c2e0d600ed analyze: plot the time spent setting up security modules 2013-11-10 23:21:15 +01:00
Lennart Poettering
9588bc3209 Remove dead code and unexport some calls
"make check-api-unused" informs us about code that is not used anymore
or that is exported but only used internally. Fix these all over the
place.
2013-11-08 18:12:45 +01:00
Lukas Nykryn
3f41e1e595 manager: configurable StartLimit default values
https://bugzilla.redhat.com/show_bug.cgi?id=821723
2013-11-08 17:00:01 +01:00
Oleksii Shevchuk
1f19a534ea Configurable Timeouts/Restarts default values
https://bugs.freedesktop.org/show_bug.cgi?id=71132

Patch adds DefaultTimeoutStartSec, DefaultTimeoutStopSec, DefaultRestartSec
configuration options to manager configuration file.
2013-11-05 19:57:22 +01:00
Lennart Poettering
44b601bc79 macro: clean up usage of gcc attributes
Always use our own macros, and name all our own macros the same style.
2013-10-16 06:14:59 +02:00
Lennart Poettering
a57f7e2c82 core: rework how we match mount units against each other
Previously to automatically create dependencies between mount units we
matched every mount unit agains all others resulting in O(n^2)
complexity. On setups with large amounts of mount units this might make
things slow.

This change replaces the matching code to use a hashtable that is keyed
by a path prefix, and points to a set of units that require that path to
be around. When a new mount unit is installed it is hence sufficient to
simply look up this set of units via its own file system paths to know
which units to order after itself.

This patch also changes all unit types to only create automatic mount
dependencies via the RequiresMountsFor= logic, and this is exposed to
the outside to make things more transparent.

With this change we still have some O(n) complexities in place when
handling mounts, but that's currently unavoidable due to kernel APIs,
and still substantially better than O(n^2) as before.

https://bugs.freedesktop.org/show_bug.cgi?id=69740
2013-09-26 20:20:30 +02:00
Kay Sievers
e21fea24ae rework systemd's own process environment handling/passing
Stop importing non-sensical kernel-exported variables. All
parameters in the kernel command line are exported to the
initial environment of PID1, but suppressed if they are
recognized by kernel built-in code. The EFI booted kernel
will add further kernel-internal things which do not belong
into userspace.

The passed original environ data of the process is not touched
and preserved across re-execution, to allow external reading of
/proc/self/environ for process properties like container*=.
2013-07-26 18:40:40 +02:00
Zbigniew Jędrzejewski-Szmek
31a7eb86f1 systemd: do not output status messages once gettys are running
Make Type=idle communication bidirectional: when bootup is finished,
the manager, as before, signals idling Type=idle jobs to continue.
However, if the boot takes too long, idling jobs signal the manager
that they have had enough, wait a tiny bit more, and continue, taking
ownership of the console. The manager, when signalled that Type=idle
jobs are done, makes a note and will not write to the console anymore.

This is a cosmetic issue, but quite noticable, so let's just fix it.

Based on Harald Hoyer's patch.

https://bugs.freedesktop.org/show_bug.cgi?id=54247
http://unix.stackexchange.com/questions/51805/systemd-messages-after-starting-login/
2013-07-15 21:34:57 -04:00
Lennart Poettering
71445ae75b core: send out "Reloading" signal before and after doing a full reload/reexec of PID 1
Since we'll unload all units/job during a reload, and then readd them it
is really useful for clients to be aware of this phase hence sent a
signal out before and after. This signal is called "Reloading" (despite
the fact that it is also sent out during reexecution, which we consider
a special case in this context) and has one boolean parameter which is
true for the signal sent before the reload, and false for the signal
after the reload. The UnitRemoved/JobRremoved and UnitNew/JobNew due to
the reloading are guranteed to be between the pair of Reloading
messages.
2013-07-10 23:41:03 +02:00
Lennart Poettering
6fa4853328 core: serialize/deserialize bus subscribers 2013-07-10 23:41:03 +02:00
Lennart Poettering
cf1265e188 core: make GC more aggressive
Since we should allow registering/unregistering transient units with the
same name in a tight-loop, we need to make the GC more aggressive, so
that dead units are cleaned up immediately instead of later.

hence, execute the GC sweep on every event loop iteration and clean up
units. This of course, means we need to be careful with adding units to
the GC queue, which we already are since we execute check_gc() of each
unit type already when adding something to the queue.
2013-07-02 17:46:57 +02:00
Lennart Poettering
4ad490007b core: general cgroup rework
Replace the very generic cgroup hookup with a much simpler one. With
this change only the high-level cgroup settings remain, the ability to
set arbitrary cgroup attributes is removed, so is support for adding
units to arbitrary cgroup controllers or setting arbitrary paths for
them (especially paths that are different for the various controllers).

This also introduces a new -.slice root slice, that is the parent of
system.slice and friends. This enables easy admin configuration of
root-level cgrouo properties.

This replaces DeviceDeny= by DevicePolicy=, and implicitly adds in
/dev/null, /dev/zero and friends if DeviceAllow= is used (unless this is
turned off by DevicePolicy=).
2013-06-27 04:17:34 +02:00
Umut Tezduyar
97d0e5f83b manager: add DefaultEnvironment option
This complements existing functionality of setting variables
through 'systemctl set-environment', the kernel command line,
and through normal environment variables for systemd in session
mode.
2013-06-20 16:27:45 -04:00
Lennart Poettering
9444b1f20e logind: add infrastructure to keep track of machines, and move to slices
- This changes all logind cgroup objects to use slice objects rather
  than fixed croup locations.

- logind can now collect minimal information about running
  VMs/containers. As fixed cgroup locations can no longer be used we
  need an entity that keeps track of machine cgroups in whatever slice
  they might be located. Since logind already keeps track of users,
  sessions and seats this is a trivial addition.

- nspawn will now register with logind and pass various bits of metadata
  along. A new option "--slice=" has been added to place the container
  in a specific slice.

- loginctl gained commands to list, introspect and terminate machines.

- user.slice and machine.slice will now be pulled in by logind.service,
  since only logind.service requires this slice.
2013-06-20 03:49:59 +02:00
Thomas Hindoe Paaboel Andersen
d9acfb71db analyze: show unit file loading on plot
This will add another color to the legend called "Loading unit files"
Like the generators it will mark a part of the systemd bar indicating
the time spent while loading unit files.
2013-06-02 22:26:13 +02:00
Umut Tezduyar
518d10e985 analyze: show generators on plot 2013-06-02 22:26:05 +02:00
Zbigniew Jędrzejewski-Szmek
44a6b1b680 Add __attribute__((const, pure, format)) in various places
I'm assuming that it's fine if a _const_ or _pure_ function
calls assert. It is assumed that the assert won't trigger,
and even if it does, it can only trigger on the first call
with a given set of parameters, and we don't care if the
compiler moves the order of calls.
2013-05-02 22:52:09 -04:00
Cristian Rodríguez
b1e2b33c52 Add some extra __attribute__ ((format)) s 2013-04-25 21:50:48 -04:00
Lennart Poettering
31afa0a44c unit: rework stop pending logic
When a trigger unit wants to know if a stop is queued for it, we should
just check precisely that and do not check whether it is actually
stopped already. This is because we use these checks usually from state
change calls where the state variables are not updated yet.

This change splits unit_pending_inactive() into two calls
unit_inactive_or_pending() and unit_stop_pending(). The former checks
state and pending jobs, the latter only pending jobs.
2013-04-25 22:01:49 -03:00
Harald Hoyer
b3680f49e2 Do not serialize environment, when switching root
When switching root, i.e. LANG can be set to the locale of the initramfs
or "C", if it was unset. When systemd deserializes LANG in the real root
this would overwrite the setting previously gathered by locale_set().

To reproduce, boot with an initramfs without locale.conf or change
/etc/locale.conf to a different language than the initramfs and check a
daemon started by systemd:

$ tr "$\000" '\n' </proc/$(pidof sshd)/environ | grep LANG
LANG=C

To prevent that, serialization of environment variables is skipped, when
serializing for switching root.

https://bugzilla.redhat.com/show_bug.cgi?id=949525
2013-04-08 14:45:19 +02:00
Michal Sekletar
c17ec25e4d core: reuse the same /tmp, /var/tmp and inaccessible dir
All Execs within the service, will get mounted the same
/tmp and /var/tmp directories, if service is configured with
PrivateTmp=yes. Temporary directories are cleaned up by service
itself in addition to systemd-tmpfiles. Directory which is mounted
as inaccessible is created at runtime in /run/systemd.
2013-03-15 22:56:40 -04:00
Michal Schmidt
03b717a3c4 core/manager: print status messages about running jobs
Sometimes the boot gets stuck until a timeout hits. The usual timeouts
are on the order of minutes, so users may lose patience.

Print animated status messages telling the names of units with running
jobs to make it easy to see what systemd is waiting for.

The animation looks cooler with a shorter interval, but 1 s is OK and
should not be too hard on slow serial console users.
2013-02-28 02:24:02 +01:00
Michal Schmidt
7ed9f6cd78 core: count active units that may mind our printing to /dev/console 2013-02-28 02:24:01 +01:00
Michal Schmidt
984a2be450 util, core: add support for ephemeral status lines
Ephemeral status lines do not end with a newline and they expect to be
overwritten by the next printed status line.
2013-02-28 02:23:27 +01:00
Michal Schmidt
6084e22e57 core/manager: make a couple of functions static
They're not used outside manager.c anymore.
2013-02-28 02:23:14 +01:00
Michal Schmidt
25cee55076 core: add manager_status_printf()
unit_status_printf() checks the state of the manager, not of the unit
as such. Move it to manager.c and rename it to manager_status_printf().

Temporarily keep unit_status_printf as a wrapper macro.
2013-02-28 00:14:40 +01:00