systemd-logind: Add systemd-logind "core"

This commits add the bulk of the systemd-logind integration code, but does
not hook it up yet other then calling its init and fini functions, which
don't do that much.

Note the configure bits check for udev since systemd-logind use will only be
supported in combination with udev. Besides that it only checks for dbus
since all communication with systemd-logind is happening over dbus, so
no further libs are needed.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

3 files changed, 49 insertions, 0 deletions

diff --git a/include/Makefile.am b/include/Makefile.am
index fa6da00ec..6578038a5 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -72,4 +72,5 @@ EXTRA_DIST = 	\
 	dix-config-apple-verbatim.h \
 	dixfontstubs.h eventconvert.h eventstr.h inpututils.h \
 	protocol-versions.h \
+	systemd-logind.h \
 	xsha1.h
diff --git a/include/dix-config.h.in b/include/dix-config.h.in
index 7c77956b1..3865d5ea4 100644
--- a/include/dix-config.h.in
+++ b/include/dix-config.h.in
@@ -420,6 +420,9 @@
 /* Support HAL for hotplug */
 #undef CONFIG_HAL
 
+/* Enable systemd-logind integration */
+#undef SYSTEMD_LOGIND 1
+
 /* Have a monotonic clock from clock_gettime() */
 #undef MONOTONIC_CLOCK
 
diff --git a/include/systemd-logind.h b/include/systemd-logind.h
new file mode 100644
index 000000000..8b0908186
--- /dev/null
+++ b/include/systemd-logind.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2013 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Hans de Goede <hdegoede@redhat.com>
+ */
+
+#ifndef SYSTEMD_LOGIND_H
+#define SYSTEMD_LOGIND_H
+
+#ifdef SYSTEMD_LOGIND
+int systemd_logind_init(void);
+void systemd_logind_fini(void);
+int systemd_logind_take_fd(int major, int minor, const char *path, Bool *paus);
+void systemd_logind_release_fd(int major, int minor);
+int systemd_logind_controls_session(void);
+void systemd_logind_vtenter(void);
+#else
+#define systemd_logind_init()
+#define systemd_logind_fini()
+#define systemd_logind_take_fd(major, minor, path) -1
+#define systemd_logind_release_fd(dev)
+#define systemd_logind_controls_session() 0
+#define systemd_logind_vtenter()
+#endif
+
+#endif