A screen saver daemon for Sun 3 and SPARC machines, similar to the SunOS
program of the same name.
This commit is contained in:
thorpej
parent
998286ad38
commit
dcbb2c500e
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# $NetBSD: Makefile,v 1.1 1995/07/12 04:57:47 thorpej Exp $
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# @(#)Makefile 8.1 (Berkeley) 5/31/93
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PROG= screenblank
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DPADD= ${LIBM}
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LDADD= -lm
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.include <bsd.prog.mk>
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/* $NetBSD: pathnames.h,v 1.1 1995/07/12 04:57:48 thorpej Exp $ */
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/*
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* Copyright (c) 1995 Jason R. Thorpe.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Jason R. Thorpe.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define _PATH_SCREENBLANKPID "/var/run/screenblank.pid"
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#define _PATH_KEYBOARD "/dev/kbd"
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#define _PATH_MOUSE "/dev/mouse"
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#define _PATH_FB "/dev/fb"
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.\" $NetBSD: screenblank.1,v 1.1 1995/07/12 04:57:50 thorpej Exp $
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.\"
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.\" Copyright (c) 1995 Jason R. Thorpe.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed for the NetBSD Project
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.\" by Jason R. Thorpe.
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd June 7, 1995
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.Dt SCREENBLANK 1
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.Os
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.Sh NAME
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.Nm screenblank
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.Nd screen saver daemon for the Sun 3 and SPARC
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.Sh SYNOPSIS
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.Nm screenblank
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.Op Fl k | Fl m
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.Op Fl d Ar timeout
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.Op Fl e Ar timeout
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.Op Fl f Ar framebuffer
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.Sh DESCRIPTION
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.Nm Screenblank
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disables the framebuffer if the keyboard and mouse are idle for a period
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of time, and re-enables the framebuffer when keyboard or mouse activity
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resumes.
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.Pp
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When killed with a SIGINT, SIGHUP, or SIGTERM,
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.Nm screenblank
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will re-enable the framebuffer. The pid can be found in the file
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.Pa /var/run/screenblank.pid .
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl k
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Do not check the keyboard for activity.
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.It Fl m
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Do not check the mouse for activity.
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.It Fl d Ar timeout
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Wait the number of seconds specified by
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.Ar timeout ,
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expressed in the format `xxx.xxx', before disabling the framebuffer due to
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inactivity. The default is 600 seconds (10 minutes).
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.It Fl e Ar timeout
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Wait the number of seconds specified by
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.Ar timeout ,
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expressed in the format `xxx.xxx', before re-enabling the framebuffer once
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activity resumes. The default is .25 seconds.
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.It Fl f Ar framebuffer
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Use the framebuffer device
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.Ar framebuffer
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instead of the default
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.Pa /dev/fb .
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.El
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.Pp
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Note that the
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.Fl k
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and
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.Fl m
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flags are mutually exclusive.
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.Sh FILES
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.Bl -tag -width "/var/run/screenblank.pid "
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.It /dev/kbd
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The keyboard device.
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.It /dev/mouse
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The mouse device.
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.It /dev/console
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The console device.
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.It /dev/fb
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The default framebuffer.
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.It /var/run/screenblank.pid
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File containing the pid of
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.Nm screenblank .
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.El
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@ -0,0 +1,321 @@
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/* $NetBSD: screenblank.c,v 1.1 1995/07/12 04:57:51 thorpej Exp $ */
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/*
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* Copyright (c) 1995 Jason R. Thorpe.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Jason R. Thorpe.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Screensaver daemon for the Sun 3 and SPARC.
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/queue.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <math.h>
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#include <paths.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#include <machine/fbio.h>
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#include "pathnames.h"
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struct dev_stat {
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LIST_ENTRY(dev_stat) ds_link; /* linked list */
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char *ds_path; /* path to device */
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int ds_isfb; /* boolean; framebuffer? */
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time_t ds_atime; /* time device last accessed */
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time_t ds_mtime; /* time device last modified */
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};
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LIST_HEAD(ds_list, dev_stat) ds_list;
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extern char *__progname;
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static void add_dev __P((char *, int));
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static void change_state __P((int));
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static void cvt_arg __P((char *, struct timeval *));
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static void logpid __P((void));
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static void sighandler __P((int, int, struct sigcontext *));
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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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struct dev_stat *dsp;
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struct timeval timo_on, timo_off, *tvp;
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struct sigaction sa;
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struct stat st;
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int ch, change, fflag = 0, kflag = 0, mflag = 0, state;
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LIST_INIT(&ds_list);
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/*
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* Set the default timeouts: 10 minutes on, .25 seconds off.
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*/
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timo_on.tv_sec = 600;
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timo_on.tv_usec = 0;
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timo_off.tv_sec = 0;
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timo_off.tv_usec = 250000;
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while ((ch = getopt(argc, argv, "d:e:f:km")) != -1) {
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switch (ch) {
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case 'd':
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cvt_arg(optarg, &timo_on);
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break;
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case 'e':
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cvt_arg(optarg, &timo_off);
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break;
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case 'f':
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fflag = 1;
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add_dev(optarg, 1);
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break;
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case 'k':
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if (mflag || kflag)
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usage();
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kflag = 1;
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break;
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case 'm':
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if (kflag || mflag)
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usage();
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mflag = 1;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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if (argc)
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usage();
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/*
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* Add the keyboard, mouse, and default framebuffer devices
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* as necessary. We _always_ check the console device.
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*/
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add_dev(_PATH_CONSOLE, 0);
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if (!kflag)
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add_dev(_PATH_KEYBOARD, 0);
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if (!mflag)
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add_dev(_PATH_MOUSE, 0);
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if (!fflag)
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add_dev(_PATH_FB, 1);
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/* Ensure that the framebuffer is on. */
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state = FBVIDEO_ON;
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change_state(state);
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tvp = &timo_on;
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/*
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* Make sure the framebuffer gets turned back on when we're
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* killed.
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*/
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sa.sa_handler = sighandler;
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sa.sa_mask = 0;
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sa.sa_flags = SA_NOCLDSTOP;
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if (sigaction(SIGINT, &sa, NULL) || sigaction(SIGTERM, &sa, NULL) ||
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sigaction(SIGHUP, &sa, NULL))
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err(1, "sigaction");
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/* Detach. */
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if (daemon(0, 0))
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err(1, "daemon");
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logpid();
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/* Start the state machine. */
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for (;;) {
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change = 0;
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for (dsp = ds_list.lh_first; dsp != NULL;
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dsp = dsp->ds_link.le_next) {
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/* Don't check framebuffers. */
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if (dsp->ds_isfb)
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continue;
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if (stat(dsp->ds_path, &st) < 0)
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err(1, "stat: %s", dsp->ds_path);
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if (st.st_atime > dsp->ds_atime) {
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change = 1;
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dsp->ds_atime = st.st_atime;
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}
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if (st.st_mtime > dsp->ds_mtime) {
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change = 1;
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dsp->ds_mtime = st.st_mtime;
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}
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}
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switch (state) {
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case FBVIDEO_ON:
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if (!change) {
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state = FBVIDEO_OFF;
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change_state(state);
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tvp = &timo_off;
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}
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break;
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case FBVIDEO_OFF:
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if (change) {
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state = FBVIDEO_ON;
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change_state(state);
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tvp = &timo_on;
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}
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break;
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}
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if (select(0, NULL, NULL, NULL, tvp) < 0)
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err(1, "select");
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}
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/* NOTREACHED */
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}
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static void
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add_dev(path, isfb)
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char *path;
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int isfb;
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{
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struct dev_stat *dsp1, *dsp2;
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/* Create the entry... */
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dsp1 = malloc(sizeof(struct dev_stat));
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if (dsp1 == NULL)
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errx(1, "can't allocate memory for %s", path);
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bzero(dsp1, sizeof(struct dev_stat));
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dsp1->ds_path = path;
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dsp1->ds_isfb = isfb;
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/* ...and put it in the list. */
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if (ds_list.lh_first == NULL) {
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LIST_INSERT_HEAD(&ds_list, dsp1, ds_link);
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} else {
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for (dsp2 = ds_list.lh_first; dsp2->ds_link.le_next != NULL;
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dsp2 = dsp2->ds_link.le_next)
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/* Nothing. */ ;
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LIST_INSERT_AFTER(dsp2, dsp1, ds_link);
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}
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}
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/* ARGSUSED */
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static void
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sighandler(sig, code, context)
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int sig, code;
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struct sigcontext *context;
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{
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/* Kill the pid file and re-enable the framebuffer before exit. */
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(void)unlink(_PATH_SCREENBLANKPID);
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change_state(FBVIDEO_ON);
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exit(0);
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}
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static void
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change_state(state)
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int state;
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{
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struct dev_stat *dsp;
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int fd;
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for (dsp = ds_list.lh_first; dsp != NULL; dsp = dsp->ds_link.le_next) {
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/* Don't change the state of non-framebuffers! */
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if (dsp->ds_isfb == 0)
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continue;
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if ((fd = open(dsp->ds_path, O_RDWR, 0)) < 0) {
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warn("open: %s", dsp->ds_path);
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continue;
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}
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if (ioctl(fd, FBIOSVIDEO, &state) < 0)
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warn("ioctl: %s", dsp->ds_path);
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(void)close(fd);
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}
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}
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static void
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cvt_arg(arg, tvp)
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char *arg;
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struct timeval *tvp;
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{
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char *cp;
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double seconds = 0.0, exponent = -1.0;
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int period = 0;
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for (cp = arg; *cp != '\0'; ++cp) {
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if (*cp == '.') {
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if (period)
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errx(1, "invalid argument: %s", arg);
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period = 1;
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continue;
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}
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if (!isdigit(*cp))
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errx(1, "invalid argument: %s", arg);
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if (period) {
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seconds = seconds + ((*cp - '0') * pow(10.0, exponent));
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exponent -= 1.0;
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} else
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seconds = (seconds * 10.0) + (*cp - '0');
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}
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tvp->tv_sec = (long)seconds;
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tvp->tv_usec = (long)((seconds - tvp->tv_sec) * 1000000);
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}
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static void
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logpid()
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{
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FILE *fp;
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if ((fp = fopen(_PATH_SCREENBLANKPID, "w")) != NULL) {
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fprintf(fp, "%u\n", getpid());
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(void)fclose(fp);
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}
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}
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static void
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usage()
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{
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fprintf(stderr, "usage: %s [-k | -m] [-d timeout] [-e timeout] %s\n",
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__progname, "[-f framebuffer]");
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exit(1);
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}
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