udev: avoid building selinux parts without have_selinux

[elogind.git] / man / sd_pid_get_session.xml

diff --git a/man/sd_pid_get_session.xml b/man/sd_pid_get_session.xml
index 9176433c3dee737edb1ed3924eeccda81fb719b6..94f533022263c1dd018a37370a2df690fca1cf06 100644 (file)
--- a/man/sd_pid_get_session.xml
+++ b/man/sd_pid_get_session.xml
@@ -44,8 +44,9 @@
 
         <refnamediv>
                 <refname>sd_pid_get_session</refname>
+                <refname>sd_pid_get_unit</refname>
                 <refname>sd_pid_get_owner_uid</refname>
-                <refpurpose>Determine session or owner of a session of a specific PID</refpurpose>
+                <refpurpose>Determine session, service or owner of a session of a specific PID</refpurpose>
         </refnamediv>
 
         <refsynopsisdiv>
@@ -58,6 +59,12 @@
                                 <paramdef>char** <parameter>session</parameter></paramdef>
                         </funcprototype>
 
+                        <funcprototype>
+                                <funcdef>int <function>sd_pid_get_unit</function></funcdef>
+                                <paramdef>pid_t <parameter>pid</parameter></paramdef>
+                                <paramdef>char** <parameter>unit</parameter></paramdef>
+                        </funcprototype>
+
                         <funcprototype>
                                 <funcdef>int <function>sd_pid_get_owner_uid</function></funcdef>
                                 <paramdef>pid_t <parameter>pid</parameter></paramdef>
@@ -71,16 +78,28 @@
 
                 <para><function>sd_pid_get_session()</function> may be
                 used to determine the login session identifier of a
-                process identified by the specified process identifier. The session
-                identifier is a short string (up to 64 characters),
-                consisting only of the characters a-zA-Z0-9 as well as
-                '-' and '_'. It is suitable for usage in file system
-                paths. Note that not all processes are part of a login
-                session (e.g. system service processes and user
-                processes that are shared between multiple sessions of
-                the same user). For processes not being part of a
-                login session this function will fail. The returned
-                string needs to be freed with the libc
+                process identified by the specified process
+                identifier. The session identifier is a short string,
+                suitable for usage in file system paths. Note that not
+                all processes are part of a login session (e.g. system
+                service processes, user processes that are shared
+                between multiple sessions of the same user, or kernel
+                threads). For processes not being part of a login
+                session this function will fail. The returned string
+                needs to be freed with the libc
+                <citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+                call after use.</para>
+
+                <para><function>sd_pid_get_unit()</function> may be
+                used to determine the systemd unit (i.e. system
+                service) identifier of a process identified by the
+                specified process identifier. The unit name is a short
+                string, suitable for usage in file system paths. Note
+                that not all processes are part of a unit/service
+                (e.g. user processes, or kernel threads). For
+                processes not being part of a systemd unit/system
+                service this function will fail. The returned string
+                needs to be freed with the libc
                 <citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
                 call after use.</para>
 
@@ -94,6 +113,10 @@
                 fail. For processes not being part of a login session
                 and not being a shared process of a user this function
                 will fail.</para>
+
+                <para>If the <literal>pid</literal> paramater of any
+                of these functions is passed as 0 the operation is
+                executed for the calling process.</para>
         </refsect1>
 
         <refsect1>
@@ -107,10 +130,11 @@
         <refsect1>
                 <title>Notes</title>
 
-                <para>The <function>sd_pid_get_session()</function>
-                and <function>sd_pid_get_owner_uid()</function>
-                interfaces are available as shared library, which can
-                be compiled and linked to with the
+                <para>The <function>sd_pid_get_session()</function>,
+                <function>sd_pid_get_pid()</function>, and
+                <function>sd_pid_get_owner_uid()</function> interfaces
+                are available as shared library, which can be compiled
+                and linked to with the
                 <literal>libsystemd-login</literal>
                 <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
                 file.</para>