Drop remaining references about sysv script support
Follow-up for 986fee6217.
This commit is contained in:
@@ -121,9 +121,6 @@ policy:
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- name: sysusers
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keys: ['systemd-sysusers']
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- name: sysv
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keys: ['systemd-sysv-generator']
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- name: tests
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keys: ['tests']
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@@ -268,12 +268,6 @@ sysupdate:
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sysusers:
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- changed-files:
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- any-glob-to-any-file: '**/*sysusers*'
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sysv-generator:
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- changed-files:
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- any-glob-to-any-file: '**/*sysv-generator*'
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sysvcompat:
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- changed-files:
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- any-glob-to-any-file: '**/*sysv*'
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tests:
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- changed-files:
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- any-glob-to-any-file: [
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@@ -434,17 +434,6 @@ GLIBC NSS:
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gshadow: files systemd
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hosts: mymachines resolve [!UNAVAIL=return] files myhostname dns
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SYSV INIT.D SCRIPTS:
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When calling "systemctl enable/disable/is-enabled" on a unit which is a
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SysV init.d script, it calls /usr/lib/systemd/systemd-sysv-install;
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this needs to translate the action into the distribution specific
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mechanism such as chkconfig or update-rc.d. Packagers need to provide
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this script if you need this functionality (you don't if you disabled
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SysV init support).
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Please see src/systemctl/systemd-sysv-install.SKELETON for how this
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needs to look like, and provide an implementation at the marked places.
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WARNINGS and TAINT FLAGS:
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systemd requires that the /run mount point exists. systemd also
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requires that /var/run is a symlink to /run. Taint flag 'var-run-bad'
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@@ -2247,7 +2247,7 @@ Features:
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being properly synchronous we just keep open the fd and close it
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when done. That means clients do not get a successful method reply,
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but much rather a disconnect on success.
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- when breaking cycles drop sysv services first, then services from /run, then from /etc, then from /usr
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- when breaking cycles drop services from /run first, then from /etc, then from /usr
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- when a bus name of a service disappears from the bus make sure to queue further activation requests
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- maybe introduce CoreScheduling=yes/no to optionally set a PR_SCHED_CORE cookie, so that all
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processes in a service's cgroup share the same cookie and are guaranteed not to share SMT cores
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@@ -2674,7 +2674,6 @@ Features:
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* document:
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- document that deps in [Unit] sections ignore Alias= fields in
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[Install] units of other units, unless those units are disabled
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- man: clarify that time-sync.target is not only sysv compat but also useful otherwise. Same for similar targets
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- document that service reload may be implemented as service reexec
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- add a man page containing packaging guidelines and recommending usage of things like Documentation=, PrivateTmp=, PrivateNetwork= and ReadOnlyDirectories=/etc /usr.
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- document systemd-journal-flush.service properly
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@@ -138,8 +138,6 @@ All tools:
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* `$SYSTEMCTL_INSTALL_CLIENT_SIDE=1` — if set, enable or disable unit files on
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the client side, instead of asking PID 1 to do this.
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* `$SYSTEMCTL_SKIP_SYSV=1` — if set, do not call SysV compatibility hooks.
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* `$SYSTEMCTL_SKIP_AUTO_KEXEC=1` — if set, do not automatically kexec instead of
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reboot when a new kernel has been loaded.
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@@ -81,10 +81,6 @@ Or you can even check /proc/$PID/cgroup directly. Also see [this blog story](htt
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A: Unfortunately that would be a racy operation. For an explanation why and how we tried to improve the situation, see [the bugzilla report about this](https://bugzilla.redhat.com/show_bug.cgi?id=615527).
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**Q: I have a native systemd service file and a SysV init script installed which share the same basename, e.g. /usr/lib/systemd/system/foobar.service vs. /etc/init.d/foobar -- which one wins?**
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A: If both files are available the native unit file always takes precedence and the SysV init script is ignored, regardless whether either is enabled or disabled. Note that a SysV service that is enabled but overridden by a native service does not have the effect that the native service would be enabled, too. Enabling of native and SysV services is completely independent. Or in other words: you cannot enable a native service by enabling a SysV service by the same name, and if a SysV service is enabled but the respective native service is not, this will not have the effect that the SysV script is executed.
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**Q: How can I use journalctl to display full (= not truncated) messages even if less is not used?**
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A: Use:
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@@ -70,16 +70,10 @@ For more details about those targets, see the
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[systemd.special(7)](https://www.freedesktop.org/software/systemd/man/systemd.special.html)
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man page.
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## Compatibility with SysV init
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LSB defines a `$network` dependency for legacy init scripts. Whenever systemd
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encounters a `$network` dependency in LSB headers of init scripts it will
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translate this to `Wants=` and `After=` dependencies on
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`network-online.target`, staying relatively close to traditional LSB behaviour.
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# Discussion
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The meaning of `$network` is defined [only very
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LSB defines a `$network` dependency for legacy init scripts.
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However, it is defined [only very
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unprecisely](http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/facilname.html)
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and people tend to have different ideas what it is supposed to mean. Here are a
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couple of ideas people came up with so far:
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+1
-1
@@ -7,7 +7,7 @@ SPDX-License-Identifier: LGPL-2.1-or-later
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systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as PID 1 and starts the rest of the system.
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systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. systemd supports SysV and LSB init scripts and works as a replacement for sysvinit.
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systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic.
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Other parts include a logging daemon, utilities to control basic system configuration like the hostname, date, locale, maintain a list of logged-in users and running containers and virtual machines, system accounts, runtime directories and settings, and daemons to manage simple network configuration, network time synchronization, log forwarding, and name resolution.
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+3
-20
@@ -583,10 +583,6 @@
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functionality to other hosts (as opposed to <emphasis>consume</emphasis> functionality of other
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hosts) generally do not need to pull this in.</para>
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<para>systemd automatically adds dependencies of type <varname>Wants=</varname> and
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<varname>After=</varname> for this target unit to all SysV init script service units
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with an LSB header referring to the <literal>$network</literal> facility.</para>
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<para>Note that this unit is only useful during the original system start-up
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logic. After the system has completed booting up, it will not track the online state of
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the system anymore. Due to this it cannot be used as a network connection monitor
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@@ -679,11 +675,6 @@
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<listitem>
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<para>Similar to <filename>local-fs.target</filename>, but
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for remote mount points.</para>
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<para>systemd automatically adds dependencies of type
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<varname>After=</varname> for this target unit to all SysV
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init script service units with an LSB header referring to
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the <literal>$remote_fs</literal> facility.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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@@ -1185,9 +1176,7 @@ WantedBy=sleep.target</programlisting>
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service lookups. Note that this is independent of UNIX user/group name lookups for which
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<filename>nss-user-lookup.target</filename> should be used. All services for which the
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availability of full host/network name resolution is essential should be ordered after
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this target, but not pull it in. systemd automatically adds dependencies of type
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<varname>After=</varname> for this target unit to all SysV init script service units
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with an LSB header referring to the <literal>$named</literal> facility.</para>
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this target, but not pull it in.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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@@ -1224,11 +1213,7 @@ WantedBy=sleep.target</programlisting>
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<term><filename>rpcbind.target</filename></term>
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<listitem>
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<para>The portmapper/rpcbind pulls in this target and orders
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itself before it, to indicate its availability. systemd
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automatically adds dependencies of type
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<varname>After=</varname> for this target unit to all SysV
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init script service units with an LSB header referring to
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the <literal>$portmap</literal> facility.</para>
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itself before it, to indicate its availability.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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@@ -1289,9 +1274,7 @@ WantedBy=sleep.target</programlisting>
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unit, but not pull it in.</para>
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<para>The service manager automatically adds dependencies of type <varname>After=</varname> for
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this target unit to all SysV init script service units with an LSB header referring to the
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<literal>$time</literal> facility, as well to all timer units with at least one
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<varname>OnCalendar=</varname> directive.</para>
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this target unit to all timer units with at least one <varname>OnCalendar=</varname> directive.</para>
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<para>This target provides stricter clock accuracy guarantees than
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<filename>time-set.target</filename> (see above), but likely requires
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@@ -3188,7 +3188,6 @@ foreach tuple : [
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['man pages', want_man],
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['html pages', want_html],
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['man page indices', want_man and have_lxml],
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['SysV compat'],
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['compat-mutable-uid-boundaries'],
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['utmp'],
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['ldconfig'],
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