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Backports of patch from systemd git to stable distributions
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Thomas Haller 1a35985264 in-addr-util: fix undefined result for in4_addr_netmask_to_prefixlen(<0.0.0.0>) 
u32ctz() was undefined for zero due to __builtin_ctz() [1].
Explicitly check for zero to make the behavior defined.

Note that this issue only affected in4_addr_netmask_to_prefixlen()
which is the only caller.

It may seem slightly odd, to return 32 (bits) for utz(0). But that
is what in4_addr_netmask_to_prefixlen() needs, and it probably makes
the most sense here.

[1] https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html

Fixes: ba91431154
2018-12-14 11:15:36 +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: drop my copyright 2018-11-26 00:30:28 +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 meson: make net.naming-scheme= default configurable 2018-12-12 10:09:36 +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 device hwdb for IdeaPad Miix510-12ISK 2018-12-14 09:16:36 +01:00
man man: substantially update the docs regarding hooking sd-bus objects up with external event loops 2018-12-13 22:33:47 +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 l10n: update Czech Translation 2018-12-04 09:25:39 +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 Merge pull request #11147 from yuwata/bash-completion-machinectl 2018-12-14 08:57:03 +01:00
src in-addr-util: fix undefined result for in4_addr_netmask_to_prefixlen(<0.0.0.0>) 2018-12-14 11:15:36 +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 udev-test: check if permitted to create block device nodes 2018-12-11 16:55:34 +03:00
tmpfiles.d sysusers,tmpfiles: re-create systemd-network, systemd-resolve and systemd-timesync 2018-07-16 17:11:50 +02:00
tools tree-wide: drop header for emacs from python scripts 2018-12-10 03:17:33 +09:00
travis-ci travis: mount tmpfs on /tmp before running the tests 2018-12-09 11:46:23 +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 update NEWS contributors list again 2018-06-20 13:32:57 +02:00
.travis.yml travis: also compile systemd on Debian Testing 2018-12-07 17:12:58 +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 meson: make net.naming-scheme= default configurable 2018-12-12 10:09:36 +01:00
meson.build meson: make net.naming-scheme= default configurable 2018-12-12 10:09:36 +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: typos and wording adjustments 2018-12-13 11:10:07 +01:00
README Drop support for lz4 < 1.3.0 2018-10-29 21:54:42 +01:00
README.md README: embed a CentOS CI badge into README 2018-12-05 12:42:52 +01:00
TODO update TODO 2018-12-10 16:09:41 +01:00
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.