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Alan Jenkins 0675e94ab5 "Don't fear the fsync()" 
For files which are vital to boot

1. Avoid opening any window where power loss will zero them out or worse.
   I know app developers all coded to the ext3 implementation, but
   the only formal documentation we have says we're broken if we actually
   rely on it.  E.g.

   * `man mount`, search for `auto_da_alloc`.
   * http://www.linux-mtd.infradead.org/faq/ubifs.html#L_atomic_change
   * https://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/

2. If we tell the kernel we're interested in writing them to disk, it will
   tell us if that fails.  So at minimum, this means we play our part in
   notifying the user about errors.

I refactored error-handling in `udevadm-hwdb` a little.  It turns out I did
exactly the same as had already been done in the `systemd-hwdb` version,
i.e. commit d702dcd.
2017-08-17 20:26:36 +01:00
.github github: how to report bugs for older distribution versions (#6146) 2017-06-20 20:20:25 +02:00
.mkosi mkosi.arch: fix comment (#6470) 2017-07-28 09:24:12 +02:00
catalog build-sys: drop gitignore patterns for in-tree builds 2017-07-18 10:05:06 -04:00
coccinelle tree-wide: drop NULL sentinel from strjoin 2016-10-23 11:43:27 -04:00
docs build-sys: drop gitignore patterns for in-tree builds 2017-07-18 10:05:06 -04:00
factory/etc factory: remove broken pam_limits 2014-07-30 15:21:54 +02:00
hwdb Add hwdb fix for Lenovo Flex 3 15 inch touchpad resolution (#6558) 2017-08-10 12:24:34 +02:00
man Merge pull request #6579 from sourcejedi/getty 2017-08-10 12:05:21 +02:00
modprobe.d modprobe.d: ship drop-in to set bonding max_bonds to 0 (#6448) 2017-08-02 08:41:18 -04:00
network build-sys: drop automake support 2017-07-18 10:04:44 -04:00
po build-sys: drop gitignore patterns for in-tree builds 2017-07-18 10:05:06 -04:00
rules rules: split the rfkill subsystem rule (#6556) 2017-08-08 08:41:15 +02:00
shell-completion Merge pull request #6465 from keszybz/drop-kdbus 2017-07-28 09:29:07 +02:00
src "Don't fear the fsync()" 2017-08-17 20:26:36 +01:00
sysctl.d build-sys: drop gitignore patterns for in-tree builds 2017-07-18 10:05:06 -04:00
system-preset build-sys: drop automake support 2017-07-18 10:04:44 -04:00
sysusers.d units,sysusers: use DynamicUser= for journal-gatewayd and drop user systemd-journal-gateway from sysusers 2017-07-28 13:37:10 +09:00
test test: Run qemu/nspawn tests with "set -e" 2017-08-10 08:43:13 +02:00
tmpfiles.d tmpfiles: drop systemd-remote.conf 2017-08-08 12:17:07 +09:00
tools meson: install the git hook (#6425) 2017-07-24 10:41:45 +02:00
units Merge pull request #6579 from sourcejedi/getty 2017-08-10 12:05:21 +02:00
xorg login: support user-bus on dbus1 2015-08-31 18:12:37 +02:00
.dir-locals.el meson: also indent scripts with 8 spaces 2017-04-25 08:49:16 -04:00
.editorconfig editors: only extend line width to 119 for C and XML files 2016-02-10 12:29:32 +01:00
.gitattributes
.gitignore build-sys: drop gitignore patterns for in-tree builds 2017-07-18 10:05:06 -04:00
.mailmap mailmap: add entry 2017-07-18 10:04:44 -04:00
.travis.yml remove gudev and gtk-doc 2015-06-03 00:22:53 +02:00
.vimrc vimrc: fix indentation logic for our docbook xml files 2016-04-29 12:23:34 +02:00
.ycm_extra_conf.py ycm: update flag blacklist 2014-06-04 15:41:10 -04:00
CODING_STYLE tree-wide: set SA_RESTART for signal handlers we install 2016-12-01 12:41:17 +01:00
configure build-sys: add basic support for ./configure && make && make install 2017-07-18 10:05:06 -04:00
DISTRO_PORTING DISTRO_PORTING: document that distros may/should change fallback DNS as well as fallback NTP if they wish 2017-07-24 11:49:16 +02:00
ENVIRONMENT.md Rename $TEST_DIR to $SYSTEMD_TEST_DATA, document it 2017-02-16 21:36:31 +01:00
HACKING HACKING: update for meson 2017-07-18 10:05:06 -04:00
LICENSE.GPL2
LICENSE.LGPL2.1
Makefile build-sys: Fix Makefile wrapper for install target (#6548) 2017-08-07 11:29:20 +02:00
meson.build build-sys: fix invalid args detected by meson 0.42 (#6561) 2017-08-09 09:41:44 -04:00
meson_options.txt Merge pull request #6420 from keszybz/gateway-name 2017-08-01 09:43:41 +02:00
mkosi.build mkosi: use '[' rather than 'test' everywhere 2017-07-20 14:37:05 +02:00
mkosi.default mkosi: create .mkosi directory 2016-10-06 11:53:58 -04:00
NEWS Revert "README: document that gperf 3.1 is required for building now" (#6541) 2017-08-05 18:30:37 -04:00
README Revert "README: document that gperf 3.1 is required for building now" (#6541) 2017-08-05 18:30:37 -04:00
README.md README: include small graphs of open issues and pull requests (#5576) 2017-03-13 08:10:04 +01:00
TODO Drop kdbus bits 2017-07-23 12:01:54 -04:00

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 are 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 file for information 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.