void
x_session_initialize (struct x_display_info *dpyinfo)
{
#define SM_ERRORSTRING_LEN 512
char errorstring[SM_ERRORSTRING_LEN];
char *previous_id = NULL;
SmcCallbacks callbacks;
ptrdiff_t name_len = 0;
/* libSM seems to crash if pwd is missing - see bug#18851. */
if (! get_current_dir_name ())
{
fprintf (stderr, "Disabling session management due to pwd error: %s\n",
emacs_strerror (errno));
return;
}
ice_fd = -1;
doing_interact = false;
/* Check if we where started by the session manager. If so, we will
have a previous id. */
if (STRINGP (Vx_session_previous_id))
previous_id = SSDATA (Vx_session_previous_id);
/* Construct the path to the Emacs program. */
if (STRINGP (Vinvocation_directory))
name_len += SBYTES (Vinvocation_directory);
if (STRINGP (Vinvocation_name))
name_len += SBYTES (Vinvocation_name);
/* This malloc will not be freed, but it is only done once, and hopefully
not very large */
emacs_program = xmalloc (name_len + 1);
char *z = emacs_program;
if (STRINGP (Vinvocation_directory))
z = lispstpcpy (z, Vinvocation_directory);
if (STRINGP (Vinvocation_name))
lispstpcpy (z, Vinvocation_name);
/* The SM protocol says all callbacks are mandatory, so set up all
here and in the mask passed to SmcOpenConnection. */
callbacks.save_yourself.callback = smc_save_yourself_CB;
callbacks.save_yourself.client_data = 0;
callbacks.die.callback = smc_die_CB;
callbacks.die.client_data = 0;
callbacks.save_complete.callback = smc_save_complete_CB;
callbacks.save_complete.client_data = 0;
callbacks.shutdown_cancelled.callback = smc_shutdown_cancelled_CB;
callbacks.shutdown_cancelled.client_data = 0;
/* Set error handlers. */
SmcSetErrorHandler (smc_error_handler);
IceSetErrorHandler (ice_error_handler);
IceSetIOErrorHandler (ice_io_error_handler);
/* Install callback for when connection status changes. */
IceAddConnectionWatch (ice_conn_watch_CB, 0);
/* Open the connection to the session manager. A failure is not
critical, it usually means that no session manager is running.
The errorstring is here for debugging. */
smc_conn = SmcOpenConnection (NULL, NULL, 1, 0,
(SmcSaveYourselfProcMask|
SmcDieProcMask|
SmcSaveCompleteProcMask|
SmcShutdownCancelledProcMask),
&callbacks,
previous_id,
&client_id,
SM_ERRORSTRING_LEN,
errorstring);
if (smc_conn != 0)
{
Vx_session_id = build_string (client_id);
#ifdef USE_GTK
/* GTK creates a leader window by itself, but we need to tell
it about our client_id. */
gdk_x11_set_sm_client_id (client_id);
#else
create_client_leader_window (dpyinfo, client_id);
#endif
}
}
void
x_session_initialize (struct x_display_info *dpyinfo)
{
#define SM_ERRORSTRING_LEN 512
char errorstring[SM_ERRORSTRING_LEN];
char* previous_id = NULL;
SmcCallbacks callbacks;
int name_len = 0;
ice_fd = -1;
doing_interact = False;
/* Check if we where started by the session manager. If so, we will
have a previous id. */
if (! EQ (Vx_session_previous_id, Qnil) && STRINGP (Vx_session_previous_id))
previous_id = SSDATA (Vx_session_previous_id);
/* Construct the path to the Emacs program. */
if (! EQ (Vinvocation_directory, Qnil))
name_len += strlen (SSDATA (Vinvocation_directory));
name_len += strlen (SSDATA (Vinvocation_name));
/* This malloc will not be freed, but it is only done once, and hopefully
not very large */
emacs_program = xmalloc (name_len + 1);
emacs_program[0] = '\0';
if (! EQ (Vinvocation_directory, Qnil))
strcpy (emacs_program, SSDATA (Vinvocation_directory));
strcat (emacs_program, SSDATA (Vinvocation_name));
/* The SM protocol says all callbacks are mandatory, so set up all
here and in the mask passed to SmcOpenConnection. */
callbacks.save_yourself.callback = smc_save_yourself_CB;
callbacks.save_yourself.client_data = 0;
callbacks.die.callback = smc_die_CB;
callbacks.die.client_data = 0;
callbacks.save_complete.callback = smc_save_complete_CB;
callbacks.save_complete.client_data = 0;
callbacks.shutdown_cancelled.callback = smc_shutdown_cancelled_CB;
callbacks.shutdown_cancelled.client_data = 0;
/* Set error handlers. */
SmcSetErrorHandler (smc_error_handler);
IceSetErrorHandler (ice_error_handler);
IceSetIOErrorHandler (ice_io_error_handler);
/* Install callback for when connection status changes. */
IceAddConnectionWatch (ice_conn_watch_CB, 0);
/* Open the connection to the session manager. A failure is not
critical, it usually means that no session manager is running.
The errorstring is here for debugging. */
smc_conn = SmcOpenConnection (NULL, NULL, 1, 0,
(SmcSaveYourselfProcMask|
SmcDieProcMask|
SmcSaveCompleteProcMask|
SmcShutdownCancelledProcMask),
&callbacks,
previous_id,
&client_id,
SM_ERRORSTRING_LEN,
errorstring);
if (smc_conn != 0)
{
Vx_session_id = make_string (client_id, strlen (client_id));
#ifdef USE_GTK
/* GTK creats a leader window by itself, but we need to tell
it about our client_id. */
gdk_set_sm_client_id (client_id);
#else
create_client_leader_window (dpyinfo, client_id);
#endif
}
}
