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The systemd System and Service Manager
37,898 Commits 4 Branches 390 Tags 551 MiB
C 88.9%
Python 5.3%
Shell 4.4%
Meson 1.2%
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Zbigniew Jędrzejewski-Szmek 2d5d2e0cc5 basic/process-util: limit command line lengths to _SC_ARG_MAX 
This affects systemd-journald and systemd-coredump.

Example entry:
$ journalctl -o export -n1 'MESSAGE=Something logged'
__CURSOR=s=976542d120c649f494471be317829ef9;i=34e;b=4871e4c474574ce4a462dfe3f1c37f06;m=c7d0c37dd2;t=57c4ac58f3b98;x=67598e942bd23dc0
__REALTIME_TIMESTAMP=1544035467475864
__MONOTONIC_TIMESTAMP=858200964562
_BOOT_ID=4871e4c474574ce4a462dfe3f1c37f06
PRIORITY=6
_UID=1000
_GID=1000
_CAP_EFFECTIVE=0
_SELINUX_CONTEXT=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
_AUDIT_SESSION=1
_AUDIT_LOGINUID=1000
_SYSTEMD_OWNER_UID=1000
_SYSTEMD_UNIT=user@1000.service
_SYSTEMD_SLICE=user-1000.slice
_SYSTEMD_USER_SLICE=-.slice
_SYSTEMD_INVOCATION_ID=1c4a469986d448719cb0f9141a10810e
_MACHINE_ID=08a5690a2eed47cf92ac0a5d2e3cf6b0
_HOSTNAME=krowka
_TRANSPORT=syslog
SYSLOG_FACILITY=17
SYSLOG_IDENTIFIER=syslog-caller
MESSAGE=Something logged
_COMM=poc
_EXE=/home/zbyszek/src/systemd-work3/poc
_SYSTEMD_CGROUP=/user.slice/user-1000.slice/user@1000.service/gnome-terminal-server.service
_SYSTEMD_USER_UNIT=gnome-terminal-server.service
SYSLOG_PID=4108
SYSLOG_TIMESTAMP=Dec  5 19:44:27
_PID=4108
_CMDLINE=./poc AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA>
_SOURCE_REALTIME_TIMESTAMP=1544035467475848

$ journalctl -o export -n1 'MESSAGE=Something logged' --output-fields=_CMDLINE|wc
      6    2053 2097410

2MB might be hard for some clients to use meaningfully, but OTOH, it is
important to log the full commandline sometimes. For example, when the program
is crashing, the exact argument list is useful.
2019-01-09 23:41:53 +01:00
.github/ISSUE_TEMPLATE docs: move markdown docs from .github/ to docs/ 2018-09-08 13:39:03 -07:00
.lgtm/cpp-queries lgtm: drop redundant newlines 2018-10-26 14:52:17 +02:00
.mkosi mkosi: update libqrencode in Debian config 2018-12-15 10:55:10 +01:00
catalog catalog: update Polish translation 2018-11-19 09:23:04 +01:00
coccinelle tree-wide: more IOVEC_MAKE() conversions 2018-11-28 13:08:19 +09:00
docs Merge pull request #11317 from filbranden/docs1 2019-01-03 18:38:57 +01:00
factory/etc man,factory: update factory config for nsswitch.conf to match the man pages 2018-11-27 22:35:02 +01:00
hwdb Add Teclast X80 PLUS (H5C5) accel mount matrix 2019-01-08 15:09:08 +01:00
man cat: add --stderr-priority option 2019-01-08 10:37:20 +01:00
modprobe.d Add SPDX license headers to various assorted files 2017-11-19 19:08:15 +01:00
network Drop my copyright headers 2018-06-14 13:03:20 +02:00
po po: update Italian translation 2019-01-03 14:44:55 +01:00
presets Drop my copyright headers 2018-06-14 13:03:20 +02:00
rules rules: watch metadata changes on DASD devices 2018-12-04 20:57:47 +01:00
shell-completion zsh completion: Prevent functions from clobbering each other, &c. 2019-01-08 15:23:37 +01:00
src basic/process-util: limit command line lengths to _SC_ARG_MAX 2019-01-09 23:41:53 +01:00
sysctl.d sysctl.d: switch net.ipv4.conf.all.rp_filter from 1 to 2 2018-11-28 16:29:01 +01:00
sysusers.d sysusers,tmpfiles: re-create systemd-network, systemd-resolve and systemd-timesync 2018-07-16 17:11:50 +02:00
test Merge pull request #11232 from yuwata/fix-9130-alternative 2019-01-08 12:22:21 +09:00
tmpfiles.d sysusers,tmpfiles: re-create systemd-network, systemd-resolve and systemd-timesync 2018-07-16 17:11:50 +02:00
tools Merge pull request #11317 from filbranden/docs1 2019-01-03 18:38:57 +01:00
travis-ci travis: also run TEST-01-BASIC with QEMU to cover udevd and so on 2018-12-29 19:14:35 +01:00
units units: replace symlinks in units/user/ by real files 2018-12-13 20:23:43 +01:00
xorg login: avoid external process call 2018-01-12 18:02:57 +01:00
.dir-locals.el coding style: reduce text width to 109 characters 2018-12-08 10:14:28 +01:00
.editorconfig editorconfig: add rule for meson.build files (#6671) 2017-08-28 16:37:23 +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: use python3 2018-12-10 03:07:17 +09:00
.mailmap sort .mailmap alphabetically 2018-12-18 12:55:00 +01:00
.travis.yml travis: add another stage to really run everything under ASan+UBsan 2018-12-24 08:52:33 +01:00
.vimrc coding style: reduce text width to 109 characters 2018-12-08 10:14:28 +01:00
.ycm_extra_conf.py ycm: add doc string for all the functions in configuration file 2017-11-29 13:21:49 -07:00
configure build-sys: add basic support for ./configure && make && make install 2017-07-18 10:05:06 -04:00
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
meson_options.txt Merge pull request #11230 from keszybz/version-string-alt 2019-01-03 21:33:55 +09:00
meson.build Merge pull request #11337 from keszybz/build-version-h 2019-01-06 13:55:10 +01:00
mkosi.build mkosi: update the boot loader from our freshly built one 2018-10-16 16:44:34 +02:00
mkosi.default mkosi: create .mkosi directory 2016-10-06 11:53:58 -04:00
NEWS NEWS: also mention that clock file for timesyncd may need to move 2019-01-08 10:20:33 +01:00
README Revert "pam_systemd: drop setting DBUS_SESSION_BUS_ADDRESS" 2019-01-04 11:19:10 +01:00
README.md README: embed a CentOS CI badge into README 2018-12-05 12:42:52 +01:00
TODO cgroup: s/cgroups? ?v?([0-9])/cgroup v\1/gI 2019-01-03 11:32:40 +09:00
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.