Add x11/lightdm and x11/lightdm-gtk-greeter.

Lightdm is a display manager that:
* Is cross-desktop - supports different desktops
* Supports different display technologies
* Is lightweight - low memory usage and fast performance
* Has a comprehensive test suite

WWW: https://www.freedesktop.org/wiki/Software/LightDM/

lightdm-gtk-greeter is the reference GTK+ greeter for LightDM.

WWW: https://launchpad.net/lightdm-gtk-greeter

Approved by:	adamw (mentor, implicit)

1 files changed, 64 insertions, 0 deletions

diff --git a/x11/lightdm/files/patch-src_session-child.c b/x11/lightdm/files/patch-src_session-child.c
new file mode 100644
index 000000000000..d0cd13b4a84c
--- /dev/null
+++ b/x11/lightdm/files/patch-src_session-child.c
@@ -0,0 +1,64 @@
+--- src/session-child.c.orig	2016-10-19 12:20:14 UTC
++++ src/session-child.c
+@@ -13,7 +13,6 @@
+ #include <grp.h>
+ #include <glib.h>
+ #include <security/pam_appl.h>
+-#include <utmp.h>
+ #include <utmpx.h>
+ #include <sys/mman.h>
+ 
+@@ -202,29 +201,6 @@ read_xauth (void)
+     return x_authority_new (x_authority_family, x_authority_address, x_authority_address_length, x_authority_number, x_authority_name, x_authority_data, x_authority_data_length);
+ }
+ 
+-/* GNU provides this but we can't rely on that so let's make our own version */
+-static void
+-updwtmpx (const gchar *wtmp_file, struct utmpx *ut)
+-{
+-    struct utmp u;
+-
+-    memset (&u, 0, sizeof (u));
+-    u.ut_type = ut->ut_type;
+-    u.ut_pid = ut->ut_pid;
+-    if (ut->ut_line)
+-        strncpy (u.ut_line, ut->ut_line, sizeof (u.ut_line));
+-    if (ut->ut_id)
+-        strncpy (u.ut_id, ut->ut_id, sizeof (u.ut_id));
+-    if (ut->ut_user)
+-        strncpy (u.ut_user, ut->ut_user, sizeof (u.ut_user));
+-    if (ut->ut_host)
+-        strncpy (u.ut_host, ut->ut_host, sizeof (u.ut_host));
+-    u.ut_tv.tv_sec = ut->ut_tv.tv_sec;
+-    u.ut_tv.tv_usec = ut->ut_tv.tv_usec;
+-
+-    updwtmp (wtmp_file, &u);
+-}
+-
+ #if HAVE_LIBAUDIT
+ static void
+ audit_event (int type, const gchar *username, uid_t uid, const gchar *remote_host_name, const gchar *tty, gboolean success)
+@@ -420,7 +396,6 @@ session_child_run (int argc, char **argv
+             ut.ut_tv.tv_sec = tv.tv_sec;
+             ut.ut_tv.tv_usec = tv.tv_usec;
+ 
+-            updwtmpx ("/var/log/btmp", &ut);
+ 
+ #if HAVE_LIBAUDIT
+             audit_event (AUDIT_USER_LOGIN, username, -1, remote_host_name, tty, FALSE);
+@@ -749,7 +724,6 @@ session_child_run (int argc, char **argv
+             if (!pututxline (&ut))
+                 g_printerr ("Failed to write utmpx: %s\n", strerror (errno));
+             endutxent ();
+-            updwtmpx ("/var/log/wtmp", &ut);
+ 
+ #if HAVE_LIBAUDIT          
+             audit_event (AUDIT_USER_LOGIN, username, uid, remote_host_name, tty, TRUE);
+@@ -786,7 +760,6 @@ session_child_run (int argc, char **argv
+             if (!pututxline (&ut))
+                 g_printerr ("Failed to write utmpx: %s\n", strerror (errno));
+             endutxent ();
+-            updwtmpx ("/var/log/wtmp", &ut);
+ 
+ #if HAVE_LIBAUDIT
+             audit_event (AUDIT_USER_LOGOUT, username, uid, remote_host_name, tty, TRUE);