"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
+ SPDX-License-Identifier: LGPL-2.1+
+
This file is part of systemd.
Copyright 2010 Lennart Poettering
daemon to check for file descriptors passed by the service manager as
part of the socket-based activation logic. It returns the number
of received file descriptors. If no file descriptors have been
- received zero is returned. The first file descriptor may be found
+ received, zero is returned. The first file descriptor may be found
at file descriptor number 3
(i.e. <constant>SD_LISTEN_FDS_START</constant>), the remaining
- descriptors follow at 4, 5, 6, ..., if any.</para>
+ descriptors follow at 4, 5, 6, …, if any.</para>
<para>If a daemon receives more than one file descriptor, they
will be passed in the same order as configured in the systemd
passed file descriptors to avoid further inheritance to children
of the calling process.</para>
- <para>If multiple socket units activate the same service the order
+ <para>If multiple socket units activate the same service, the order
of the file descriptors passed to its main process is undefined.
If additional file descriptors have been passed to the service
manager using
variables are no longer inherited by child processes.</para>
<para><function>sd_listen_fds_with_names()</function> is like
- <function>sd_listen_fds()</function> but optionally also returns
+ <function>sd_listen_fds()</function>, but optionally also returns
an array of strings with identification names for the passed file
- descriptors, if that is available, and the
+ descriptors, if that is available and the
<parameter>names</parameter> parameter is non-NULL. This
information is read from the <varname>$LISTEN_FDNAMES</varname>
variable, which may contain a colon-separated list of names. For
files, see
<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details. For file descriptors pushed into the file descriptor
- store (see above) the name is set via the
+ store (see above), the name is set via the
<varname>FDNAME=</varname> field transmitted via
<function>sd_pid_notify_with_fds()</function>. The primary usecase
for these names are services which accept a variety of file
<function>sd_is_socket()</function> and related calls is not
sufficient. Note that the names used are not unique in any
way. The returned array of strings has as many entries as file
- descriptors has been received, plus a final NULL pointer
+ descriptors have been received, plus a final NULL pointer
terminating the array. The caller needs to free the array itself
and each of its elements with libc's <function>free()</function>
call after use. If the <parameter>names</parameter> parameter is
- NULL the call is entirely equivalent to
+ NULL, the call is entirely equivalent to
<function>sd_listen_fds()</function>.</para>
- <para>Under specific conditions the following automatic file
+ <para>Under specific conditions, the following automatic file
descriptor names are returned:
<table>