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man: refresh description of sysvinit compat for services

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The existing text must have been written before systemd-sysv-generator was
created. We don't create the wrappers dynamically since a long time.

Also add more links and make the description conditional on "if compat
is enabled".
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2021-09-27 08:43:10 +02:00
parent 880e1e0729
commit 18c7a1eb6c
2 changed files with 10 additions and 10 deletions
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6
man/systemd-sysv-generator.xml
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@ -31,7 +31,7 @@
that creates wrapper .service units for
<ulink url="https://savannah.nongnu.org/projects/sysvinit">SysV init</ulink>
scripts in <filename>/etc/init.d/*</filename> at boot and when
configuration of the system manager is reloaded. This will allow
configuration of the system manager is reloaded. This allows
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
to support them similarly to native units.</para>
@ -46,6 +46,10 @@
<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
for more details.</para>
<para>Note that compatibility is quite comprehensive but not 100%, for more details see <ulink
url="https://www.freedesktop.org/wiki/Software/systemd/Incompatibilities">Incompatibilities with
SysV</ulink>.</para>
<para>SysV runlevels have corresponding systemd targets
(<filename>runlevel<replaceable>X</replaceable>.target</filename>).
The wrapper unit that is generated will be wanted by those targets

14
man/systemd.service.xml
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@ -50,15 +50,11 @@
which configure resource control settings for the processes of the
service.</para>
<para>If a service is requested under a certain name but no unit
configuration file is found, systemd looks for a SysV init script
by the same name (with the <filename>.service</filename> suffix
removed) and dynamically creates a service unit from that script.
This is useful for compatibility with SysV. Note that this
compatibility is quite comprehensive but not 100%. For details
about the incompatibilities, see the <ulink
url="https://www.freedesktop.org/wiki/Software/systemd/Incompatibilities">Incompatibilities
with SysV</ulink> document.</para>
<para>If SysV init compat is enabled, systemd automatically creates service units that wrap SysV init
scripts (the service name is the same as the name of the script, with a <literal>.service</literal>
suffix added); see
<citerefentry><refentrytitle>systemd-sysv-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
</para>
<para>The <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
command allows creating <filename>.service</filename> and <filename>.scope</filename> units dynamically