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Topi Miettinen 7d85383edb tree-wide: add size limits for tmpfs mounts
Limit size of various tmpfs mounts to 10% of RAM, except volatile root and /var
to 25%. Another exception is made for /dev (also /devs for PrivateDevices) and
/sys/fs/cgroup since no (or very few) regular files are expected to be used.

In addition, since directories, symbolic links, device specials and xattrs are
not counted towards the size= limit, number of inodes is also limited
correspondingly: 4MB size translates to 1k of inodes (assuming 4k each), 10% of
RAM (using 16GB of RAM as baseline) translates to 400k and 25% to 1M inodes.

Because nr_inodes option can't use ratios like size option, there's an
unfortunate side effect that with small memory systems the limit may be on the
too large side. Also, on an extremely small device with only 256MB of RAM, 10%
of RAM for /run may not be enough for re-exec of PID1 because 16MB of free
space is required.
2020-05-13 00:37:18 +02:00
.github cifuzz: fuzz the master branch on push 2020-05-08 21:30:19 +03:00
.lgtm/cpp-queries lgtm: complain about accept() [people should use accept4() instead, due to O_CLOEXEC] 2019-04-10 20:03:38 +02:00
.mkosi mkosi: Fix openSUSE image declaration 2020-05-04 22:12:58 +02:00
catalog catalog,po: update Polish translation 2020-05-04 17:13:02 +02:00
coccinelle tree-wide: formatting tweaks reported by Coccinelle 2020-04-21 23:21:04 +02:00
docs docs: document the new offline discard logic 2020-05-07 16:13:07 +02:00
factory/etc home: add pam_systemd_home.so PAM hookup 2020-01-28 22:36:41 +01:00
hwdb.d Added Chuwi Hibook Pro (Model: CWI526) (#15770) 2020-05-11 10:25:02 +02:00
man man: document homed D-Bus API 2020-05-12 11:07:01 +02:00
modprobe.d Add SPDX license headers to various assorted files 2017-11-19 19:08:15 +01:00
network network: add TUN/TAP vt-* network rule for VMs 2020-04-17 19:15:00 +02:00
po catalog,po: update Polish translation 2020-05-04 17:13:02 +02:00
presets preset: let's clean up preset list a bit 2020-04-07 19:01:00 +02:00
rules.d rules.d: import the keyboard builtin instead of running it 2020-03-01 14:04:30 +01:00
semaphoreci semaphore: switch to upstream-ci 2020-04-04 19:36:53 +03:00
shell-completion shell-completion/zsh: update systemd-analyze completions 2020-04-27 08:40:15 +02:00
src tree-wide: add size limits for tmpfs mounts 2020-05-13 00:37:18 +02:00
sysctl.d sysctl: enable coredump for suid binaries 2020-04-07 15:28:46 +02:00
sysusers.d sysusers,tmpfiles: re-create systemd-network, systemd-resolve and systemd-timesync 2018-07-16 17:11:50 +02:00
test DHCP client: make SendOption work for DHCPv6 too. 2020-05-11 16:31:08 +02:00
tmpfiles.d tmpfiles: apply ACLs to top-level journal directory in /run, too 2020-01-31 15:04:12 +01:00
tools man: put all pages which mention a specifier in the index 2020-05-07 16:30:10 +02:00
travis-ci install libzstd-dev for CI builds 2020-05-04 10:59:43 +02:00
units tree-wide: add size limits for tmpfs mounts 2020-05-13 00:37:18 +02:00
xorg scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.clang-format Improve help for clang-format 2020-04-25 09:39:31 +02:00
.ctags editors: Prevent ctags from following symlinks 2019-02-15 11:01:20 -08:00
.dir-locals.el scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.editorconfig scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.gitattributes git: indicate that tabs are never OK in the systemd tree 2013-10-30 02:25:38 +01:00
.gitignore gitignore: add nspawn image lock and mkosi temporary files 2018-09-07 20:00:22 +02:00
.lgtm.yml lgtm: drop the TMPDIR/meson workaround 2020-03-03 20:27:42 +01:00
.mailmap NEWS: update contributors list 2020-03-03 08:31:06 +01:00
.travis.yml travis: add missing closing quote sign 2019-11-24 13:15:20 +03:00
.vimrc scripts: use 4 space indentation 2019-04-12 08:30:31 +02:00
.ycm_extra_conf.py ycm: add doc string for all the functions in configuration file 2017-11-29 13:21:49 -07:00
LICENSE.GPL2 relicense to LGPLv2.1 (with exceptions) 2012-04-12 00:24:39 +02:00
LICENSE.LGPL2.1 licence: remove references to old FSF address 2012-12-17 11:41:31 +01:00
Makefile build-sys: Fix Makefile wrapper for install target (#6548) 2017-08-07 11:29:20 +02:00
NEWS core: introduce support for cgroup freezer 2020-04-30 19:02:51 +02:00
README coredump: add zstandard support for coredumps 2020-05-04 10:59:43 +02:00
README.md oss-fuzz: point the badge directly to our logs 2020-04-04 19:41:33 +02:00
TODO update TODO 2020-05-12 23:56:26 +02:00
azure-pipelines.yml Free up some resources on Azure Pipelines 2019-07-17 13:28:38 +09:00
configure treewide: more portable bash shebangs 2020-03-05 17:27:07 +01:00
meson.build shared/ethtool-util: hush gcc warnings about array bounds 2020-05-11 13:57:11 +02:00
meson_options.txt coredump: add zstandard support for coredumps 2020-05-04 10:59:43 +02:00
mkosi.build mkosi: Unify environment for unit tests 2020-04-22 10:35:12 +02:00
mkosi.default mkosi: create .mkosi directory 2016-10-06 11:53:58 -04:00
zanata.xml po: add basic fedora.zanata.org configuration 2018-02-19 13:56:57 +01:00

README.md

Systemd

System and Service Manager

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Details

General information about systemd can be found in the systemd Wiki.

Information about build requirements is provided in the README file.

Consult our NEWS file for information about what's new in the most recent systemd versions.

Please see the Hacking guide for information on how to hack on systemd and test your modifications.

Please see our Contribution Guidelines for more information about filing GitHub Issues and posting GitHub Pull Requests.

When preparing patches for systemd, please follow our Coding Style Guidelines.

If you are looking for support, please contact our mailing list or join our IRC channel.

Stable branches with backported patches are available in the stable repo.