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systemd/units/console-getty.service.in

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license: LGPL-2.1+ -> LGPL-2.1-or-later
2020-11-09 07:23:58 +03:00
# SPDX-License-Identifier: LGPL-2.1-or-later
Add SPDX license headers to unit files
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#
container: spawn a getty instead of a sulogin in a container
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# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=Console Getty
man/systemd-getty-generator fix/update * Containers don't use serial-getty@console.service, they use console-getty.service instead, and suppress scanning for kernel or virtualizer consoles. * Nowadays gettys are started on *all* configured kernel consoles. * except for the line printer console, because that's not a tty. (Seriously. Search CONFIG_LP_CONSOLE).
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Documentation=man:agetty(8) man:systemd-getty-generator(8)
units: order getty units after getty-pre.target unconditionally Those two units had this ordering conditionalized on HAVE_SYSV_COMPAT. This seems strange. 45e27532971ac84e835a2879df510a581f933fcd added the ordering differently for those two files without any comment, and I think it was just pasted or scripted erroneously.
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After=systemd-user-sessions.service plymouth-quit-wait.service getty-pre.target
meson: use jinja2 for unit templates We don't need two (and half) templating systems anymore, yay! I'm keeping the changes minimal, to make the diff manageable. Some enhancements due to a better templating system might be possible in the future. For handling of '## ' — see the next commit.
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{% if HAVE_SYSV_COMPAT %}
units: order getty units after getty-pre.target unconditionally Those two units had this ordering conditionalized on HAVE_SYSV_COMPAT. This seems strange. 45e27532971ac84e835a2879df510a581f933fcd added the ordering differently for those two files without any comment, and I think it was just pasted or scripted erroneously.
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After=rc-local.service
meson: use jinja2 for unit templates We don't need two (and half) templating systems anymore, yay! I'm keeping the changes minimal, to make the diff manageable. Some enhancements due to a better templating system might be possible in the future. For handling of '## ' — see the next commit.
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{% endif %}
container: spawn a getty instead of a sulogin in a container
2012-04-22 04:15:22 +04:00
Before=getty.target
units/console-getty.service: comment reason for ConditionPathExists Currently we have 4 getty services. 1 has a BindsTo dependency on a device unit. 3 have ConditionPathExists, but the reason is different in every single one. * Add comment to console-getty@.service (see commit 1b41981d) * getty@.service is already commented * container-getty.service is not strictly correct, as I realized while trying to compose a comment. Reported as #6584.
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# OCI containers may be run without a console
ConditionPathExists=/dev/console
container: spawn a getty instead of a sulogin in a container
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[Service]
units: drop "-p" flag from agetty's login options This flag was added in db6aedab9292 with the justification that locale environment variables should be preserved by the user session. However, the companion patch to drop the UnsetEnvironment= directive blocking these variables was never merged, so the intended change was never effected. While the patch was ineffective toward its stated goal, the "-p" option does have material negative consequences for the user session in systemd — environment variables to support the use of credentials and memory pressure directives, such as $CREDENTIALS_DIRECTORY and $MEMORY_PRESSURE_WATCH, which are now directly used by agetty and login, get leaked into the user session potentially breaking applications that rely on these values. E.g. systemd-ask-password fails from the tty when $CREDENTIALS_DIRECTORY has been leaked from agetty, because it expects to be able to access credentials in $CREDENTIALS_DIRECTORY. This effectively reverts db6aedab9292. References: db6aedab9292 (units: Tell login to preserve environment (#6023), 2017-05-24)
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# The '-o' option value tells agetty to replace 'login' arguments with '--' for
# safety, and then the entered username.
ExecStart=-/sbin/agetty -o '-- \\u' --noreset --noclear --keep-baud 115200,57600,38400,9600 - ${TERM}
service: introduce Type=idle and use it for gettys Type=idle is much like Type=simple, however between the fork() and the exec() in the child we wait until PID 1 informs us that no jobs are left. This is mostly a cosmetic fix to make gettys appear only after all boot output is finished and complete. Note that this does not impact the normal job logic as we do not delay the completion of any jobs. We just delay the invocation of the actual binary, and only for services that otherwise would be of Type=simple.
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Type=idle
container: spawn a getty instead of a sulogin in a container
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Restart=always
UtmpIdentifier=cons
getty: Pass tty to use by agetty via stdin If the tty arg is set to "-", agetty uses the stdin fd as the tty. Let's pass the tty this way so that we keep an fd open to the tty at all times. If all fd's to a tty are closed, the kernel might reset the tty which we want to avoid.
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StandardInput=tty
StandardOutput=tty
container: spawn a getty instead of a sulogin in a container
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TTYPath=/dev/console
TTYReset=yes
TTYVHangup=yes
meson: use jinja2 for unit templates We don't need two (and half) templating systems anymore, yay! I'm keeping the changes minimal, to make the diff manageable. Some enhancements due to a better templating system might be possible in the future. For handling of '## ' — see the next commit.
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{% if not ENABLE_LOGIND %}
container: spawn a getty instead of a sulogin in a container
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KillMode=process
meson: use jinja2 for unit templates We don't need two (and half) templating systems anymore, yay! I'm keeping the changes minimal, to make the diff manageable. Some enhancements due to a better templating system might be possible in the future. For handling of '## ' — see the next commit.
2021-05-16 12:55:36 +03:00
{% endif %}
container: spawn a getty instead of a sulogin in a container
2012-04-22 04:15:22 +04:00
IgnoreSIGPIPE=no
core: optionally send SIGHUP in addition to the configured kill signal This is useful to fake session ends for processes like shells.
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SendSIGHUP=yes
units: Import tty specific credentials for each getty unit As explained in the previous commit, this allows us to configure agetty and login for individual ttys instead of globally.
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ImportCredential=tty.console.agetty.*:agetty.
ImportCredential=tty.console.login.*:login.
units: Load agetty credentials in all getty units In it's latest release, agetty will support reading the agetty.autologin and login.noauth credentials, so let's make sure we import those in our getty units so they're available to agetty to read.
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ImportCredential=agetty.*
ImportCredential=login.*
shell: define three system credentials we can propagate into shell prompts and welcome messages
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ImportCredential=shell.*
container: spawn a getty instead of a sulogin in a container
2012-04-22 04:15:22 +04:00
[Install]
WantedBy=getty.target
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