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Commit Graph

42 Commits

Author SHA1 Message Date
Luca Boccassi
93f597013a Add ExtensionImages directive to form overlays
Add support for overlaying images for services on top of their
root fs, using a read-only overlay.
2021-02-23 15:34:46 +00:00
Lennart Poettering
d9d3f05def core: use our usual UINT32_MAX scaling for OOMD limits
So far OOMD limits used permyriads, as an upgrade from the original
percent.

The rest of our codebase typically scales stuff relative to UINT32_MAX.
Let's clean this up, an make sure this happens here too. This is
particularly relevant, as this is exposed in unit files and API, and
before we mark this stable we should get the APIs right.
2021-02-18 22:39:37 +01:00
Zbigniew Jędrzejewski-Szmek
8f50eb04ac
Merge pull request #18481 from keszybz/rpm-restart-post-trans
Restart units after the rpm transaction
2021-02-16 08:25:49 +01:00
Zbigniew Jędrzejewski-Szmek
70666e28a1 core: add EnqueueMarkedJobs method to reload/restart marked units
We support two return types for methods that start jobs. EnqueueJob support the
full-monty mode with affected jobs. I didn't do this here, since it seems
unlikely to be used. In the common case there'd be a huge list of jobs and
affected jobs. EnqueueMarkedJobs() just returns a list of jobs that we can wait
upon.

The name of the method is generic in case we decide to add something other than
just reload/restart later on.

When errors occur, resource errors are treated as fatal, but for other error
types we queue up other jobs, and only return an error at the end. The
assumption is that the caller will ignore the result error anyway, so it's
better to try to reload/restart as much as possible.
2021-02-15 20:49:14 +01:00
Zbigniew Jędrzejewski-Szmek
ff68472a20 core: add Unit.Markers property
The property is never set by systemd, only reset after a stop or restart or
reload. It may externally be set to mark the unit for a later restart/reload.

I wasn't sure whether to configure the property only for the types where this
makes sense (Service, Swap, etc). But Restart() method is defined on the unit,
and also having this always under the same property name is more convenient.
2021-02-15 20:49:14 +01:00
Anita Zhang
d8a4d64bc3 man: document ManagedOOMPreference= 2021-02-12 12:46:22 -08:00
Anita Zhang
0a9f93443b oom: rework *MemoryPressureLimit= properties to have 1/10000 precision
Requested in
https://github.com/systemd/systemd/pull/15206#discussion_r505506657,
preserve the full granularity for memory pressure limits (permyriad)
instead of capping out at percent.
2021-02-02 17:52:48 -08:00
Topi Miettinen
ddc155b2fd New directives NoExecPaths= ExecPaths=
Implement directives `NoExecPaths=` and `ExecPaths=` to control `MS_NOEXEC`
mount flag for the file system tree. This can be used to implement file system
W^X policies, and for example with allow-listing mode (NoExecPaths=/) a
compromised service would not be able to execute a shell, if that was not
explicitly allowed.

Example:
[Service]
NoExecPaths=/
ExecPaths=/usr/bin/daemon /usr/lib64 /usr/lib

Closes: #17942.
2021-01-29 12:40:52 +00:00
Luca Boccassi
af47713952 pid1: add DBUS method to mount image inside a running service namespace
Follow the same pattern as the BindMount method.
2021-01-21 18:37:00 +00:00
Luca Boccassi
5e8deb94c6 core: add DBUS method to bind mount new nodes without service restart
Allow to setup new bind mounts for a service at runtime (via either
DBUS or a new 'systemctl bind' verb) with a new helper that forks into
the unit's mount namespace.
Add a new integration test to cover this.

Useful for zero-downtime addition to services that are running inside
mount namespaces, especially when using RootImage/RootDirectory.

If a service runs with a read-only root, a tmpfs is added on /run
to ensure we can create the airlock directory for incoming mounts
under /run/host/incoming.
2021-01-18 17:24:05 +00:00
Lennart Poettering
394131d5be
Merge pull request #17497 from anitazha/randomizeonce
timer: add new feature FixedRandomDelay=
2020-11-10 13:29:04 +01:00
Yu Watanabe
db9ecf0501 license: LGPL-2.1+ -> LGPL-2.1-or-later 2020-11-09 13:23:58 +09:00
Kristijan Gjoshev
acf24a1a84 timer: add new feature FixedRandomDelay=
FixedRandomDelay=yes will use
`siphash24(sd_id128_get_machine() || MANAGER_IS_SYSTEM(m) || getuid() || u->id)`,
where || is concatenation, instead of a random number to choose a value between
0 and RandomizedDelaySec= as the timer delay.
This essentially sets up a fixed, but seemingly random, offset for each timer
iteration rather than having a random offset recalculated each time it fires.

Closes #10355

Co-author: Anita Zhang <the.anitazha@gmail.com>
2020-11-05 10:59:33 -08:00
Lennart Poettering
95923d7e13 man: document the new Timestamping= option 2020-10-27 14:12:45 +01:00
Anita Zhang
4d824a4e0b core: add ManagedOOM*= properties to configure systemd-oomd on the unit
This adds the hook ups so it can be read with the usual systemd
utilities. Used in later commits by sytemd-oomd.
2020-10-07 16:17:23 -07:00
Zbigniew Jędrzejewski-Szmek
3b1211574b man: use trailing slash on directories in more places 2020-10-05 18:44:05 +02:00
Lennart Poettering
36f8cf0163
Merge pull request #17086 from keszybz/developer-mode-default
Update dbus docs, make developer mode default
2020-09-22 16:29:28 +02:00
Renaud Métrich
1bdecfb8e7 socket: unified documentation for Accept to use 'yes/no' everywhere 2020-09-18 12:57:27 +02:00
Zbigniew Jędrzejewski-Szmek
1f6b4144f5 man: update autogenerated dbus docs
Follow-up for 9df2cdd8ec.
2020-09-17 09:02:29 +02:00
Zbigniew Jędrzejewski-Szmek
c882b71457 man: reorder autogenerated dbus api lists
3e5f04bf64 was trying to do the right thing, but
the resulting list does not match the autogenerated order (which is the same as
the order in vtable definition). I assume the addition was done manually. Fix
the order so that dbus-docs-fresh test is not unhappy.
2020-09-17 00:01:20 +09:00
Luca Boccassi
836540070d core: add [Enable|Disable]UnitFilesWithFlags DBUS methods
The new methods work as the unflavoured ones, but takes flags as a
single uint64_t DBUS parameters instead of different booleans, so
that it can be extended without breaking backward compatibility.
Add new flag to allow adding/removing symlinks in
[/etc|/run]/systemd/system.attached so that portable services
configuration files can be self-contained in those directories, without
affecting the system services directories.
Use the new methods and flags from portablectl --enable.

Useful in case /etc is read-only, with only the portable services
directories being mounted read-write.
2020-09-04 17:56:37 +02:00
Renaud Métrich
3e5f04bf64 socket: New option 'FlushPending' (boolean) to flush socket before entering listening state
Disabled by default. When Enabled, before listening on the socket, flush the content.
Applies when Accept=no only.
2020-09-01 17:20:23 +02:00
Lennart Poettering
3c719357dc man: extend on the usec/sec discrepancy
Let's document the discrepancy between the Sec and USec suffixing of
unit files and D-Bus properties at three places: in "systemctl show"
(where it already was briefly mentioned), in the D-Bus interface
description (at one place at least, i.e. the most prominent of
properties that encapsulate time values, there are many more) and in the
general man page explaining time values.

By documenting this at all three places I think we now do as much as we
can do about this highlighting the discrepancy of the naming and the
reasons behind it.

Fixes: #2047
2020-08-28 18:01:17 +02:00
Zbigniew Jędrzejewski-Szmek
e4b2cea32a man: update dbus doc stubs
For 4e39995371 and
bb0c0d6f29.
2020-08-27 21:30:23 +02:00
Zbigniew Jędrzejewski-Szmek
35f4e010da man: add RootImageOptions and associated bits to dbus api docs
Relevant commits:
b3d133148e,
18d7370587.
2020-08-22 12:39:01 +02:00
Zbigniew Jędrzejewski-Szmek
9653108f11 man: update autogenerated dbus api lists
We forgot to do this before the release :(
Relavant commits are:
4e11ddfdd3,
0bb007f7a2,
a3d19f5d99,
bf76080180,
4793c31083.

Suitable for backporting.
2020-08-22 12:36:43 +02:00
Zbigniew Jędrzejewski-Szmek
d3fcecf3c9 man: import lxml formatting changes
lxml insists on this, see 4fb222c4b2.
2020-08-22 12:28:49 +02:00
Zbigniew Jędrzejewski-Szmek
d08a529518 man: fix typo 2020-08-05 19:44:53 +02:00
Topi Miettinen
f4e1a42592 man: match parentheses
Files found with:
for f in *; do \
    l=`tr -d '[^(]' < $f | wc -c`; \
    r=`tr -d '[^)]' < $f | wc -c`; \
    if [ $l -ne $r ]; then \
       echo $f $l $r; \
    fi; \
done
2020-07-07 13:31:39 +02:00
Zbigniew Jędrzejewski-Szmek
55cf7779f2 man: fix various internal references
Found with linkchecker.
2020-06-25 14:41:44 +02:00
Zbigniew Jędrzejewski-Szmek
b7a4734551 man: fix links to various external man pages
In cases where we used both die-net and man-pages for the same reference,
I switched to use man-pages everywhere.
2020-06-25 14:41:44 +02:00
Zbigniew Jędrzejewski-Szmek
201632e314 tree-wide: s/time-out/timeout/g
See 3f9a0a522f for justification.
2020-05-26 10:28:59 +02:00
Lennart Poettering
671fee1873 man: run man/update-dbus-docs again 2020-05-12 11:06:28 +02:00
Zbigniew Jędrzejewski-Szmek
48f99d7c06 man: use --bus-introspect to autogenerate dbus api docs
This has the advantage that the executables are always in place and we don't
need any units to exist on the bus, so we can eventually hook this up into
a normal build system. (Probably as a build time check.)
2020-05-05 22:41:23 +02:00
Zbigniew Jędrzejewski-Szmek
98ab0daeeb docs: use "polkit" to refer to PolicyKit
See d35f51ea84 for justification.

First use in each file is turned into a link to the documentation page.
2020-04-21 17:10:02 +02:00
Zbigniew Jędrzejewski-Szmek
00bb75d7ce man: add markers to put all dbus entities in the directives index
Follow-up for f92c8d1c67.

directives.index:
- This index contains 3398 entries in 19 sections, referring to 333 individual
+ This index contains 4316 entries in 19 sections, referring to 333 individual
2020-04-21 10:59:24 +02:00
Zbigniew Jędrzejewski-Szmek
47fb7fd6b0 man: run systemd1(5) through the updater
For some reason I must've forgotten this page in 4fb222c4b2.
2020-04-21 10:56:51 +02:00
Daan De Meyer
2736c25ce2 D-Bus docs: systemd1 fixes 2020-04-19 21:38:44 +02:00
Daan De Meyer
ca264f7d96 man: fixes from online review
Also includes the issues pointed out by @boucman.
2020-04-16 20:12:56 +02:00
Zbigniew Jędrzejewski-Szmek
ae53ea5226 man: update description of polkit rules for systemd1
Fixes #2562.

v2: the erroneous part about CAP_SYS_ADMIN is removed
2020-04-16 19:46:40 +02:00
Zbigniew Jędrzejewski-Szmek
08fe1b6cdc update-dbus-docs: add support for settings printing just one selected interface
So far the units there were being documented had only one custom interface.
But for the pid1 case, something more flexibile is needed. So let's add
an annotation in the page what we want to print, and filter in the generator.
2020-04-16 19:46:40 +02:00
Zbigniew Jędrzejewski-Szmek
3031660c21 man: import org.freedesktop.systemd1(3) from the wiki
As usual, the formatting was fixed and various obvious updates
were done, but nothing major.

I removed documentation of snapshots and related methods though.
2020-04-16 19:46:40 +02:00