X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsd_is_fifo.xml;h=17ecca833672be4c9c915eba1a9915ba14cf86cb;hp=5eaf1585a2c14c0ae4825309dbfd31d2602d1d75;hb=a09abc4ae0bdc0200324eaa0416f23ff2170ec4e;hpb=74d005783e355acc784d123024e33bbb66ef9ef1

diff --git a/man/sd_is_fifo.xml b/man/sd_is_fifo.xml
index 5eaf1585a..17ecca833 100644
--- a/man/sd_is_fifo.xml
+++ b/man/sd_is_fifo.xml
@@ -21,7 +21,8 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 -->
 
-<refentry id="sd_is_fifo">
+<refentry id="sd_is_fifo"
+        xmlns:xi="http://www.w3.org/2001/XInclude">
 
         <refentryinfo>
                 <title>sd_is_fifo</title>
@@ -48,6 +49,7 @@
                 <refname>sd_is_socket_inet</refname>
                 <refname>sd_is_socket_unix</refname>
                 <refname>sd_is_mq</refname>
+                <refname>sd_is_special</refname>
                 <refpurpose>Check the type of a file descriptor</refpurpose>
         </refnamediv>
 
@@ -83,7 +85,7 @@
                                 <paramdef>int <parameter>fd</parameter></paramdef>
                                 <paramdef>int <parameter>type</parameter></paramdef>
                                 <paramdef>int <parameter>listening</parameter></paramdef>
-                                <paramdef>const char* <parameter>path</parameter></paramdef>
+                                <paramdef>const char *<parameter>path</parameter></paramdef>
                                 <paramdef>size_t <parameter>length</parameter></paramdef>
                         </funcprototype>
 
@@ -93,6 +95,12 @@
                                 <paramdef>const char *<parameter>path</parameter></paramdef>
                         </funcprototype>
 
+                        <funcprototype>
+                                <funcdef>int <function>sd_is_special</function></funcdef>
+                                <paramdef>int <parameter>fd</parameter></paramdef>
+                                <paramdef>const char *<parameter>path</parameter></paramdef>
+                        </funcprototype>
+
                 </funcsynopsis>
         </refsynopsisdiv>
 
@@ -102,21 +110,22 @@
                 <para><function>sd_is_fifo()</function> may be called
                 to check whether the specified file descriptor refers
                 to a FIFO or pipe. If the <parameter>path</parameter>
-                parameter is not NULL, it is checked whether the FIFO
-                is bound to the specified file system path.</para>
+                parameter is not <constant>NULL</constant>, it is
+                checked whether the FIFO is bound to the specified
+                file system path.</para>
 
                 <para><function>sd_is_socket()</function> may be
                 called to check whether the specified file descriptor
                 refers to a socket. If the
                 <parameter>family</parameter> parameter is not
-                <constant>AF_UNSPEC</constant> it is checked whether
+                <constant>AF_UNSPEC</constant>, it is checked whether
                 the socket is of the specified family (AF_UNIX,
                 <constant>AF_INET</constant>, ...). If the
-                <parameter>type</parameter> parameter is not 0 it is
+                <parameter>type</parameter> parameter is not 0, it is
                 checked whether the socket is of the specified type
                 (<constant>SOCK_STREAM</constant>,
                 <constant>SOCK_DGRAM</constant>, ...). If the
-                <parameter>listening</parameter> parameter is positive
+                <parameter>listening</parameter> parameter is positive,
                 it is checked whether the socket is in accepting mode,
                 i.e. <function>listen()</function> has been called for
                 it. If <parameter>listening</parameter> is 0, it is
@@ -135,23 +144,33 @@
                 <constant>AF_INET6</constant>.</para>
 
                 <para><function>sd_is_socket_unix()</function> is
-                similar to <function>sd_is_socket()</function>, but
+                similar to <function>sd_is_socket()</function> but
                 optionally checks the <constant>AF_UNIX</constant> path the socket is bound
                 to, unless the <parameter>path</parameter> parameter
-                is <constant>NULL</constant>. For normal file system <constant>AF_UNIX</constant> sockets set
-                the <parameter>length</parameter> parameter to 0. For
-                Linux abstract namespace sockets set the
+                is <constant>NULL</constant>. For normal file system <constant>AF_UNIX</constant> sockets,
+                set the <parameter>length</parameter> parameter to 0. For
+                Linux abstract namespace sockets, set the
                 <parameter>length</parameter> to the size of the
-                address, including the initial 0 byte and set
+                address, including the initial 0 byte, and set the
                 <parameter>path</parameter> to the initial 0 byte of
                 the socket address.</para>
 
                 <para><function>sd_is_mq()</function> may be called to
                 check whether the specified file descriptor refers to
                 a POSIX message queue. If the
-                <parameter>path</parameter> parameter is not NULL, it
-                is checked whether the message queue is bound to the
-                specified name.</para>
+                <parameter>path</parameter> parameter is not
+                <constant>NULL</constant>, it is checked whether the
+                message queue is bound to the specified name.</para>
+
+                <para><function>sd_is_special()</function> may be
+                called to check whether the specified file descriptor
+                refers to a special file. If the
+                <parameter>path</parameter> parameter is not
+                <constant>NULL</constant>, it is checked whether the file
+                descriptor is bound to the specified file
+                name. Special files in this context are character
+                device nodes and files in <filename>/proc</filename>
+                or <filename>/sys</filename>.</para>
         </refsect1>
 
         <refsect1>
@@ -159,7 +178,7 @@
 
                 <para>On failure, these calls return a negative
                 errno-style error code. If the file descriptor is of
-                the specified type and bound to the specified address
+                the specified type and bound to the specified address,
                 a positive return value is returned, otherwise
                 zero.</para>
         </refsect1>
@@ -167,42 +186,12 @@
         <refsect1>
                 <title>Notes</title>
 
-                <para>These functions are provided by the reference
-                implementation of APIs for new-style daemons and
-                distributed with the systemd package. The algorithms
-                they implement are simple, and can easily be
-                reimplemented in daemons if it is important to support
-                this interface without using the reference
-                implementation.</para>
+                <xi:include href="libsystemd-pkgconfig.xml" xpointer="pkgconfig-text"/>
 
                 <para>Internally, these function use a combination of
                 <filename>fstat()</filename> and
                 <filename>getsockname()</filename> to check the file
                 descriptor type and where it is bound to.</para>
-
-                <para>For details about the algorithms check the
-                liberally licensed reference implementation sources:
-                <ulink url="http://cgit.freedesktop.org/systemd/systemd/plain/src/libsystemd-daemon/sd-daemon.c"/>
-                and <ulink
-                url="http://cgit.freedesktop.org/systemd/systemd/plain/src/systemd/sd-daemon.h"/></para>
-
-                <para><function>sd_is_fifo()</function> and the
-                related functions are implemented in the reference
-                implementation's <filename>sd-daemon.c</filename> and
-                <filename>sd-daemon.h</filename> files. These
-                interfaces are available as shared library, which can
-                be compiled and linked to with the
-                <constant>libsystemd-daemon</constant>
-                <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
-                file. Alternatively, applications consuming these APIs
-                may copy the implementation into their source
-                tree. For more details about the reference
-                implementation see
-                <citerefentry><refentrytitle>sd-daemon</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
-
-                <para>These functions continue to work as described,
-                even if -DDISABLE_SYSTEMD is set during
-                compilation.</para>
         </refsect1>
 
         <refsect1>