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Franck Bui 278e815bfa logind: don't delay login for root even if systemd-user-sessions.service is not activated yet
If for any reason something goes wrong during the boot process (most likely due
to a network issue), system admins should be allowed to log in to the system to
debug the problem. However due to the login session barrier enforced by
systemd-user-sessions.service for all users, logins for root will be delayed
until a (dbus) timeout expires. Beside being confusing, it's not a nice user
experience to wait for an indefinite period of time (no message is shown) this
and also suggests that something went wrong in the background.

The reason of this delay is due to the fact that all units involved in the
creation of a user session are ordered after systemd-user-sessions.service,
which is subject to network issues. If root needs to log in at that time,
logind is requested to create a new session (via pam_systemd), which ultimately
ends up waiting for systemd-user-session.service to be activated. This has the
bad side effect to block login for root until the dbus call done by pam_systemd
times out and the PAM stack proceeds anyways.

To solve this problem, this patch orders the session scope units and the user
instances only after systemd-user-sessions.service for unprivileged users only.
2022-07-12 22:54:39 +01:00
.clusterfuzzlite ci: unpin CFLite 2022-04-26 09:13:57 +00:00
.github mkosi: update to latest main 2022-07-11 13:29:28 +01:00
.lgtm/cpp-queries ci: pack-ify our custom CodeQL queries and enable them in Actions 2021-12-07 14:57:09 +01:00
.semaphore semaphoreci: re-enable rebooting tests 2022-04-07 14:53:49 +09:00
catalog Move message repeat 2022-06-01 00:20:30 +09:00
coccinelle basic/list: drop LIST_IS_EMPTY 2022-07-02 12:46:16 +02:00
docs docs: normalize uppercasing of titles of network doc 2022-07-05 22:12:08 +02:00
factory meson: also allow setting GIT_VERSION via templates 2022-04-05 22:18:31 +02:00
hwdb.d Fix automatic screen rotation for Asus Transformer T100TAM 2022-07-11 22:44:12 +02:00
LICENSES network: license all config files as CC0 2022-01-12 16:05:59 +01:00
man smack: Add DefaultSmackProcessLabel to user.conf and system.conf 2022-07-12 22:47:32 +01:00
mkosi.default.d mkosi: drop libiptc from build for Fedora 2022-05-13 04:21:27 +09:00
modprobe.d meson: install the right README file in modprobe.d 2021-07-07 14:52:05 +02:00
network network: add example file that enables DHCP on ethernet links 2022-01-12 16:05:59 +01:00
po po: add a false positive to POTFILES.skip 2022-06-27 22:59:26 +09:00
presets units: enable systemd-network-generator by default 2021-12-16 09:49:39 +01:00
rules.d meson: install 70-power-switch.rules 2022-05-19 05:04:58 +09:00
shell-completion bootctl: add --install-source=auto|image|host 2022-07-08 16:58:51 +01:00
src logind: don't delay login for root even if systemd-user-sessions.service is not activated yet 2022-07-12 22:54:39 +01:00
sysctl.d tree-wide: link to docs.kernel.org for kernel documentation 2022-07-04 19:56:53 +02:00
sysusers.d Use descriptive name for nobody 2022-05-27 22:09:24 +01:00
test test-network: support to remove routing policy rules with l3mdev flag 2022-07-11 22:39:26 +02:00
tmpfiles.d meson: Sort lines in tmpfiles.d/meson.build 2022-05-03 20:46:16 +02:00
tools meson: Switch default-locale default to C.UTF-8 2022-06-04 05:08:37 +09:00
units logind: don't delay login for root even if systemd-user-sessions.service is not activated yet 2022-07-12 22:54:39 +01:00
xorg xorg/50-systemd-user: add a full license header 2021-10-01 14:45:00 +02:00
.clang-format clang-format: Adjust style of pointers 2022-05-30 04:00:54 +09:00
.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 docs: configure editorconfig for css and html 2022-05-17 21:13:17 +02:00
.gitattributes gitattributes: introduce and use "generated" attribute 2021-10-18 09:42:55 +02:00
.gitignore emacs: ignore .dir-locals-2.el (personal customization) versioning 2022-06-27 07:32:14 +00:00
.lgtm.yml Revert "lgtm: disable cpp/missing-return (again)" 2022-04-16 10:59:29 +00:00
.mailmap mailmap: two more names 2021-03-30 13:17:58 +02:00
.packit.yml Packit: build SRPMs in Copr 2022-03-09 09:52:41 +00:00
.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
configure tools: shellcheck-ify tool scripts 2021-09-30 12:27:06 +02:00
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 tree-wide: add spdx header on all scripts and helpers 2021-01-28 09:55:35 +01:00
meson_options.txt smack: Add DefaultSmackProcessLabel to user.conf and system.conf 2022-07-12 22:47:32 +01:00
meson.build smack: Add DefaultSmackProcessLabel to user.conf and system.conf 2022-07-12 22:47:32 +01:00
mkosi.build ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
mkosi.postinst ci: check for failed services after boot 2021-12-10 10:25:43 +01:00
NEWS NEWS: mention change in default behavior of background sessions 2022-07-07 10:11:45 +09:00
README man: update the description of taint flags 2022-07-09 19:18:14 +02:00
README.md README: rawhide -> Rawhide 2022-04-06 23:14:21 +09:00
TODO update TODO 2022-07-11 17:37:41 +02:00

Systemd

System and Service Manager

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Details

Most documentation is available on systemd's web site.

Assorted, older, 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 Code Map for information about this repository's layout and content.

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

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

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