/* windows.c --- turning the screen black; dealing with visuals, virtual roots.
- * xscreensaver, Copyright (c) 1991-1998 Jamie Zawinski <jwz@netscape.com>
+ * xscreensaver, Copyright (c) 1991-1998 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
if (status == GrabSuccess)
si->keyboard_grab_window = w;
- if (p->debug_p)
- fprintf(stderr, "%s: XGrabKeyboard(... 0x%x ...) ==> %s\n",
+ if (p->verbose_p)
+ fprintf(stderr, "%s: grabbing keyboard on 0x%x... %s.\n",
blurb(), (unsigned long) w,
(status == GrabSuccess ? "GrabSuccess" :
status == AlreadyGrabbed ? "AlreadyGrabbed" :
if (status == GrabSuccess)
si->mouse_grab_window = w;
- if (p->debug_p)
- fprintf(stderr, "%s: XGrabPointer(... 0x%x, 0x%x ...) ==> %s\n",
- blurb(), (unsigned long) w, (unsigned long) cursor,
- grab_string(status));
+ if (p->verbose_p)
+ fprintf(stderr, "%s: grabbing mouse on 0x%x... %s.\n",
+ blurb(), (unsigned long) w, grab_string(status));
return status;
}
{
saver_preferences *p = &si->prefs;
XUngrabKeyboard(si->dpy, CurrentTime);
- if (p->debug_p)
- fprintf(stderr, "%s: XUngrabKeyboard (was 0x%x)\n", blurb(),
+ if (p->verbose_p)
+ fprintf(stderr, "%s: ungrabbing keyboard (was 0x%x).\n", blurb(),
(unsigned long) si->keyboard_grab_window);
si->keyboard_grab_window = 0;
}
{
saver_preferences *p = &si->prefs;
XUngrabPointer(si->dpy, CurrentTime);
- if (p->debug_p)
- fprintf(stderr, "%s: XUngrabPointer (was 0x%x)\n", blurb(),
+ if (p->verbose_p)
+ fprintf(stderr, "%s: ungrabbing mouse (was 0x%x).\n", blurb(),
(unsigned long) si->mouse_grab_window);
si->mouse_grab_window = 0;
}
nitems == 1 && bytesafter == 0)
{
if (verbose_p)
- printf ("%s: destroying xsetroot data (0x%lX).\n",
- blurb(), *dataP);
+ fprintf (stderr, "%s: destroying xsetroot data (0x%lX).\n",
+ blurb(), *dataP);
XKillClient (dpy, *dataP);
}
else
saver_info *si = ssi->global;
saver_preferences *p = &si->prefs;
if (p->verbose_p && ssi->real_vroot)
- printf ("%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n",
- blurb(), (unsigned long) ssi->real_vroot);
+ fprintf (stderr,
+ "%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n",
+ blurb(), (unsigned long) ssi->real_vroot);
remove_vroot_property (si->dpy, ssi->screensaver_window);
if (ssi->real_vroot)
{
char buf [255];
sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig));
perror (buf);
- saver_exit (si, 1);
+ saver_exit (si, 1, 0);
}
}
}
handle_signals (saver_info *si, Bool on_p)
{
#if 0
- if (on_p) printf ("handling signals\n");
- else printf ("unhandling signals\n");
+ if (on_p) fprintf (stderr, "handling signals\n");
+ else fprintf (stderr, "unhandling signals\n");
#endif
catch_signal (si, SIGHUP, on_p);
}
void
-saver_exit (saver_info *si, int status)
+saver_exit (saver_info *si, int status, const char *dump_core_reason)
{
saver_preferences *p = &si->prefs;
static Bool exiting = False;
else if (status == 1) status = -1;
#endif
- if (si->prefs.debug_p)
+ if (si->prefs.debug_p && !dump_core_reason)
+ dump_core_reason = "because of -debug";
+
+ if (dump_core_reason)
{
- fprintf(real_stderr, "%s: dumping core (because of -debug)\n", blurb());
- /* Do this to drop a core file, so that we can get a stack trace. */
- abort();
+#if 0
+ if (si->locking_disabled_p &&
+ si->nolock_reason &&
+ *si->nolock_reason)
+ {
+ /* If locking is disabled, it's because xscreensaver was launched
+ by root, and has relinquished its user id (most likely we are
+ now running as "nobody".) This means we won't be able to dump
+ core, since "nobody" can't write files; so don't even try.
+ */
+ fprintf(real_stderr, "%s: NOT dumping core (%s)\n", blurb(),
+ si->nolock_reason);
+ }
+ else
+#endif
+ {
+ /* Note that the Linux man page for setuid() says If uid is
+ different from the old effective uid, the process will be
+ forbidden from leaving core dumps.
+ */
+
+ char cwd[4096]; /* should really be PATH_MAX, but who cares. */
+ fprintf(real_stderr, "%s: dumping core (%s)\n", blurb(),
+ dump_core_reason);
+
+# if defined(HAVE_GETCWD)
+ getcwd (cwd, sizeof(cwd));
+# elif defined(HAVE_GETWD)
+ getwd (cwd);
+# else
+ strcpy(cwd, "unknown.");
+# endif
+ fprintf (real_stderr, "%s: current directory is %s\n", blurb(), cwd);
+ describe_uids (si, real_stderr);
+
+ /* Do this to drop a core file, so that we can get a stack trace. */
+ abort();
+ }
}
exit (status);
if (p->fade_p && !inhibit_fade && !si->demo_mode_p)
{
- int grabbed = -1;
Window *current_windows = (Window *)
calloc(sizeof(Window), si->nscreens);
Colormap *current_maps = (Colormap *)
ssi->black_pixel);
}
- if (p->verbose_p) fprintf (stderr, "%s: fading... ", blurb());
+ if (p->verbose_p) fprintf (stderr, "%s: fading...\n", blurb());
XGrabServer (si->dpy); /* ############ DANGER! */
/* Clear the stderr layer on each screen.
- Grab the mouse on the first screen on which the mouse is grabbable
- (if there are multiple heads, I think you might only be able to
- grab the mouse on the screen that currently has the mouse? Anyway,
- we only grab the mouse once, and don't try again after the grab
- has succeeded.) We grab the mouse on the root window of the screen,
- not on the screensaver window, since the screensaver window is not
- yet mapped.
*/
- for (i = 0; i < si->nscreens; i++)
- {
- saver_screen_info *ssi = &si->screens[i];
-
- /* grab and blacken mouse on the root window (saver not mapped yet)
- */
- if (grabbed != GrabSuccess)
- {
- Window root = RootWindowOfScreen(ssi->screen);
- grabbed = grab_mouse (si, root,
- (si->demo_mode_p ? 0 : ssi->cursor));
- }
-
- if (!dont_clear || ssi->stderr_overlay_window)
- /* Do this before the fade, since the stderr cmap won't fade
- even if we uninstall it (beats me...) */
- clear_stderr (ssi);
- }
+ if (!dont_clear)
+ for (i = 0; i < si->nscreens; i++)
+ {
+ saver_screen_info *ssi = &si->screens[i];
+ if (ssi->stderr_overlay_window)
+ /* Do this before the fade, since the stderr cmap won't fade
+ even if we uninstall it (beats me...) */
+ clear_stderr (ssi);
+ }
/* Note! The server is grabbed, and this will take several seconds
to complete! */
current_maps = 0;
current_windows = 0;
- if (p->verbose_p) fprintf (stderr, "fading done.\n");
+ if (p->verbose_p) fprintf (stderr, "%s: fading done.\n", blurb());
#ifdef HAVE_MIT_SAVER_EXTENSION
for (i = 0; i < si->nscreens; i++)
}
#endif /* HAVE_MIT_SAVER_EXTENSION */
- /* If we had successfully grabbed the mouse, let it go now. */
- if (grabbed == GrabSuccess)
- ungrab_mouse (si);
-
XUngrabServer (si->dpy);
XSync (si->dpy, False); /* ###### (danger over) */
}
blank_screen (saver_info *si)
{
int i;
+
+ /* Note: we do our grabs on the root window, not on the screensaver window.
+ If we grabbed on the saver window, then the demo mode and lock dialog
+ boxes wouldn't get any events.
+ */
+ grab_keyboard_and_mouse (si,
+ /*si->screens[0].screensaver_window,*/
+ RootWindowOfScreen(si->screens[0].screen),
+ (si->demo_mode_p ? 0 : si->screens[0].cursor));
+
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
store_activate_time (si, si->screen_blanked_p);
raise_window (si, False, False, False);
- /* Note: we do our grabs on the root window, not on the screensaver window.
- If we grabbed on the saver window, then the demo mode and lock dialog
- boxes wouldn't get any events.
- */
- grab_keyboard_and_mouse (si,
- /*si->screens[0].screensaver_window,*/
- RootWindowOfScreen(si->screens[0].screen),
- (si->demo_mode_p ? 0 : si->screens[0].cursor));
-
#ifdef HAVE_XHPDISABLERESET
if (si->locked_p && !hp_locked_p)
{
if (p->unfade_p && !si->demo_mode_p)
{
- int grabbed = -1;
Window *current_windows = (Window *)
calloc(sizeof(Window), si->nscreens);
ssi->black_pixel);
}
- if (p->verbose_p) fprintf (stderr, "%s: unfading... ", blurb());
+ if (p->verbose_p) fprintf (stderr, "%s: unfading...\n", blurb());
XSync (si->dpy, False);
XSync (si->dpy, False);
/* Clear the stderr layer on each screen.
- Grab the mouse on the first screen on which the mouse is grabbable
- (if there are multiple heads, I think you might only be able to
- grab the mouse on the screen that currently has the mouse? Anyway,
- we only grab the mouse once, and don't try again after the grab
- has succeeded.)
*/
for (i = 0; i < si->nscreens; i++)
{
saver_screen_info *ssi = &si->screens[i];
- if (grabbed != GrabSuccess)
- grabbed = grab_mouse (si, RootWindowOfScreen (ssi->screen),
- 0);
clear_stderr (ssi);
}
free(current_windows);
current_windows = 0;
- if (p->verbose_p) fprintf (stderr, "unfading done.\n");
-
- /* If we had successfully grabbed the mouse, let it go now. */
- if (grabbed == GrabSuccess)
- ungrab_mouse (si);
+ if (p->verbose_p) fprintf (stderr, "%s: unfading done.\n", blurb());
}
else
{
ssi->screensaver_window = 0;
initialize_screensaver_window_1 (ssi);
+
+ /* stderr_overlay_window is a child of screensaver_window, so we need
+ to destroy that as well (actually, we just need to invalidate and
+ drop our pointers to it, but this will destroy it, which is ok so
+ long as it happens before old_w itself is destroyed.) */
+ reset_stderr (ssi);
+
raise_window (si, True, True, False);
store_vroot_property (si->dpy,
ssi->screensaver_window, ssi->screensaver_window);
projects / xscreensaver / blobdiff