plymouth/0001-let-it-become-a-real-daemon.patch

Related to bnc#892526 -- let plymouthd become a real daemon that
is it should use its own session with the help of the system call
setsid(2).  Also avoid an EBUSY on ioctl TIOCCONS if a former
plymouthd had failed.  And a crash or termination may restore not
only the current virtual console but also any serial console as
well restore the system console.

---
 plymouth-0.9.0/src/libply-splash-core/ply-device-manager.c |    9 ++
 plymouth-0.9.0/src/libply-splash-core/ply-device-manager.h |    1 
 plymouth-0.9.0/src/libply/ply-terminal-session.c           |    7 ++
 plymouth-0.9.0/src/libply/ply-utils.c                      |    2 
 plymouth-0.9.0/src/main.c                                  |   42 +++++++------
 5 files changed, 43 insertions(+), 18 deletions(-)

--- plymouth-0.9.0/src/libply-splash-core/ply-device-manager.c
+++ plymouth-0.9.0/src/libply-splash-core/ply-device-manager.c	2014-09-10 12:16:10.694235361 +0000
@@ -947,3 +947,12 @@ ply_device_manager_deactivate_keyboards
       node = next_node;
     }
 }
+
+void
+ply_close_all_terminals (ply_device_manager_t *manager)
+{
+  ply_hashtable_foreach (manager->terminals,
+                         (ply_hashtable_foreach_func_t *)
+                         ply_terminal_close,
+                         manager);
+}
--- plymouth-0.9.0/src/libply-splash-core/ply-device-manager.h
+++ plymouth-0.9.0/src/libply-splash-core/ply-device-manager.h	2014-09-10 12:16:24.826735672 +0000
@@ -50,6 +50,7 @@ void ply_device_manager_deactivate_keybo
 void ply_device_manager_activate_renderers (ply_device_manager_t *manager);
 void ply_device_manager_deactivate_renderers (ply_device_manager_t *manager);
 ply_terminal_t *ply_device_manager_get_default_terminal (ply_device_manager_t *manager);
+void ply_close_all_terminals (ply_device_manager_t *manager);
 
 #endif
 
--- plymouth-0.9.0/src/libply/ply-utils.c
+++ plymouth-0.9.0/src/libply/ply-utils.c	2014-09-10 08:53:01.886236228 +0000
@@ -843,6 +843,8 @@ ply_detach_daemon (ply_daemon_handle_t *
   close (sender_fd);
   free (handle);
 
+  setsid();
+
   return true;
 }
 
--- plymouth-0.9.0/src/libply/ply-terminal-session.c
+++ plymouth-0.9.0/src/libply/ply-terminal-session.c	2014-09-10 11:18:04.118735227 +0000
@@ -187,6 +187,13 @@ ply_terminal_session_redirect_console (p
 
   assert (terminal_name != NULL);
 
+  fd = open ("/dev/console", O_RDWR | O_NOCTTY);
+  if (fd >= 0)
+    {
+      ioctl (fd, TIOCCONS);   /* Undo any current map if any */
+      close (fd);
+    }
+
   fd = open (terminal_name, O_RDWR | O_NOCTTY); 
 
   if (fd < 0)
--- plymouth-0.9.0/src/main.c
+++ plymouth-0.9.0/src/main.c	2014-09-10 13:02:23.242235200 +0000
@@ -1042,6 +1042,7 @@ on_seat_added (state_t    *state,
 
 }
 
+static ply_device_manager_t *manager;
 static void
 load_devices (state_t                    *state,
               ply_device_manager_flags_t  flags)
@@ -1049,6 +1050,8 @@ load_devices (state_t
   state->device_manager = ply_device_manager_new (state->default_tty, flags);
   state->local_console_terminal = ply_device_manager_get_default_terminal (state->device_manager);
 
+  manager = state->device_manager;
+
   ply_device_manager_watch_seats (state->device_manager,
                                   (ply_seat_added_handler_t)
                                   on_seat_added,
@@ -1077,6 +1080,7 @@ quit_splash (state_t *state)
           ply_trace ("Not retaining splash, so deallocating VT");
           ply_terminal_deactivate_vt (state->local_console_terminal);
           ply_terminal_close (state->local_console_terminal);
+          ply_close_all_terminals (state->device_manager);
         }
     }
 
@@ -2075,25 +2079,22 @@ dump_debug_buffer_to_file (void)
  #include <termios.h>
  #include <unistd.h>
 static void
-on_crash (int signum)
+dosigaction (int signum)
 {
-    struct termios term_attributes;
     int fd;
 
-    fd = open ("/dev/tty1", O_RDWR | O_NOCTTY);
-    if (fd < 0) fd = open ("/dev/hvc0", O_RDWR | O_NOCTTY);
-
-    ioctl (fd, KDSETMODE, KD_TEXT);
-
-    tcgetattr (fd, &term_attributes);
-
-    term_attributes.c_iflag |= BRKINT | IGNPAR | ICRNL | IXON;
-    term_attributes.c_oflag |= OPOST;
-    term_attributes.c_lflag |= ECHO | ICANON | ISIG | IEXTEN;
-
-    tcsetattr (fd, TCSAFLUSH, &term_attributes);
+    if (manager)
+      {
+          ply_device_manager_deactivate_keyboards (manager);
+          ply_close_all_terminals (manager);
+      }
 
-    close (fd);
+    fd = open ("/dev/console", O_RDWR | O_NOCTTY);
+    if (fd >= 0)
+      {
+        ioctl (fd, TIOCCONS);   /* Undo any current map if any */
+        close (fd);
+      }
 
     if (debug_buffer != NULL)
       {
@@ -2108,7 +2109,6 @@ on_crash (int signum)
         pid_file = NULL;
       }
 
-    signal (signum, SIG_DFL);
     raise(signum);
 }
 
@@ -2145,6 +2145,7 @@ main (int    argc,
   char *kernel_command_line = NULL;
   char *tty = NULL;
   ply_device_manager_flags_t device_manager_flags = PLY_DEVICE_MANAGER_FLAGS_NONE;
+  struct sigaction sa;
 
   state.start_time = ply_get_timestamp ();
   state.command_parser = ply_command_parser_new ("plymouthd", "Splash server");
@@ -2256,8 +2257,13 @@ main (int    argc,
   if (debug)
     debug_buffer = ply_buffer_new ();
 
-  signal (SIGABRT, on_crash);
-  signal (SIGSEGV, on_crash);
+  sigemptyset(&sa.sa_mask);
+  sa.sa_flags = SA_RESETHAND;
+  sa.sa_handler = dosigaction;
+  sigaction (SIGHUP,  &sa, NULL);
+  sigaction (SIGTERM, &sa, NULL);
+  sigaction (SIGABRT, &sa, NULL);
+  sigaction (SIGSEGV, &sa, NULL);
 
   /* before do anything we need to make sure we have a working
    * environment.