ce834215a7
facilitate the new saver loading/unloading notification interface in syscons. daemon_saver: - M_NOWAIT was wrong, since NULL returns are not handled. Just use M_WAITOK. - use `ostype' instead of hard-coded "FreeBSD". Now there is no more hard-coded string! (But, who will run this screen saver on other OS?!) - put macros and data declarations in a consistent order. - -DDEAMON_ONLY and -DSHOW_HOSTNAME options added in the previous commit are removed. Options of this kind can go stale and no one notices because no one uses them. DEAMON_ONLY is just removed. SHOW_HOSTNAME is made default. snake_saver: - use `ostype' and `osrelease' as in the daemon saver. The string changes slightly - there was a hyphen after "FreeBSD"; now there is a space. (It is consistent with uname -a, like the daemon server already is.) all screen savers: - Use the new add_scrn_saver()/remove_scrn_saver() in syscons.c to declare loading/unloading of a screen saver. Removed reference to `current_saver' and the variable `old_saver' as they are not necessary anymore. - The blank, fade and green screen savers manipulate VGA registers. Module loading should fail for non-VGA cards. - `scrn_blanked' is consistently treated as a number/counter rather than boolean. - Some savers touch `scp->start' and `scp->end' to force entire screen update when stopping themselves. This is unnecessary now because syscons.c takes care of that. - cleared up many unused or unnecessary #include statements. - Removed -DLKM from Makefiles. YOU NEED TO RECOMPILE BOTH SCREEN SAVERS AND KERNEL AS OF THIS CHANGE.
251 lines
6.4 KiB
C
251 lines
6.4 KiB
C
/*-
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* Copyright (c) 1997 Sandro Sigala, Brescia, Italy.
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* Copyright (c) 1997 Chris Shenton
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* Copyright (c) 1995 S ren Schmidt
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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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* in this position and unchanged.
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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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*
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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, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: daemon_saver.c,v 1.5 1997/06/24 12:43:18 yokota Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/lkm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <machine/md_var.h>
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#include <i386/include/pc/display.h>
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#include <saver.h>
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#define CONSOLE_VECT(x, y) \
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*((u_short*)(Crtat + (y)*cur_console->xsize + (x)))
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#define DAEMON_MAX_WIDTH 32
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#define DAEMON_MAX_HEIGHT 19
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MOD_MISC(daemon_saver);
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static char *message;
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static int messagelen;
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/* Who is the author of this ASCII pic? */
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static char *daemon_pic[] = {
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" , ,",
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" /( )`",
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" \\ \\___ / |",
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" /- _ `-/ '",
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" (/\\/ \\ \\ /\\",
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" / / | ` \\",
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" O O ) / |",
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" `-^--'`< '",
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" (_.) _ ) /",
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" `.___/` /",
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" `-----' /",
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"<----. __ / __ \\",
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"<----|====O)))==) \\) /====",
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"<----' `--' `.__,' \\",
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" | |",
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" \\ / /\\",
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" ______( (_ / \\______/",
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" ,' ,-----' |",
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" `--{__________)",
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NULL
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};
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static char *daemon_attr[] = {
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" R R",
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" RR RR",
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" R RRRR R R",
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" RR W RRR R",
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" RWWW W R RR",
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" W W W R R",
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" B B W R R",
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" WWWWWWRR R",
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" RRRR R R R",
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" RRRRRRR R",
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" RRRRRRR R",
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"YYYYYY RR R RR R",
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"YYYYYYYYYYRRRRYYR RR RYYYY",
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"YYYYYY RRRR RRRRRR R",
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" R R",
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" R R RR",
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" CCCCCCR RR R RRRRRRRR",
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" CC CCCCCCC C",
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" CCCCCCCCCCCCCCC",
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NULL
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};
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/*
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* Reverse a graphics character, or return unaltered if no mirror;
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* should do alphanumerics too, but I'm too lazy. <cshenton@it.hq.nasa.gov>
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*/
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static char
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xflip_symbol(char symbol)
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{
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static const char lchars[] = "`'(){}[]\\/<>";
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static const char rchars[] = "'`)(}{][/\\><";
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int pos;
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for (pos = 0; lchars[pos] != '\0'; pos++)
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if (lchars[pos] == symbol)
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return rchars[pos];
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return symbol;
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}
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static void
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draw_daemon(int xpos, int ypos, int dxdir)
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{
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int x, y;
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int attr;
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for (y = 0; daemon_pic[y] != NULL; y++)
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for (x = 0; daemon_pic[y][x] != '\0'; x++) {
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switch (daemon_attr[y][x]) {
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case 'R': attr = (FG_LIGHTRED|BG_BLACK)<<8; break;
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case 'Y': attr = (FG_YELLOW|BG_BLACK)<<8; break;
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case 'B': attr = (FG_LIGHTBLUE|BG_BLACK)<<8; break;
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case 'W': attr = (FG_LIGHTGREY|BG_BLACK)<<8; break;
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case 'C': attr = (FG_CYAN|BG_BLACK)<<8; break;
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default: attr = (FG_WHITE|BG_BLACK)<<8; break;
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}
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if (dxdir < 0) { /* Moving left */
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CONSOLE_VECT(xpos + x, ypos + y) =
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scr_map[daemon_pic[y][x]]|attr;
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} else { /* Moving right */
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CONSOLE_VECT(xpos + DAEMON_MAX_WIDTH - x - 1, ypos + y) =
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scr_map[xflip_symbol(daemon_pic[y][x])]|attr;
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}
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}
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}
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static void
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draw_string(int xpos, int ypos, char *s, int len)
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{
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int x;
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for (x = 0; x < len; x++)
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CONSOLE_VECT(xpos + x, ypos) =
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scr_map[s[x]]|(FG_LIGHTGREEN|BG_BLACK)<<8;
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}
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static void
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daemon_saver(int blank)
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{
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static int txpos = 10, typos = 10;
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static int txdir = -1, tydir = -1;
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static int dxpos = 0, dypos = 0;
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static int dxdir = 1, dydir = 1;
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static int moved_daemon = 0;
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scr_stat *scp = cur_console;
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if (blank) {
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if (scrn_blanked++ < 2)
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return;
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fillw((FG_LIGHTGREY|BG_BLACK)<<8|scr_map[0x20], Crtat,
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scp->xsize * scp->ysize);
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set_border(0);
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scrn_blanked = 1;
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if (++moved_daemon) {
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if (dxdir > 0) {
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if (dxpos == scp->xsize - DAEMON_MAX_WIDTH)
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dxdir = -1;
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} else {
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if (dxpos == 0) dxdir = 1;
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}
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if (dydir > 0) {
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if (dypos == scp->ysize - DAEMON_MAX_HEIGHT)
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dydir = -1;
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} else {
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if (dypos == 0) dydir = 1;
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}
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moved_daemon = -1;
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dxpos += dxdir; dypos += dydir;
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}
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if (txdir > 0) {
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if (txpos == scp->xsize - messagelen)
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txdir = -1;
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} else {
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if (txpos == 0) txdir = 1;
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}
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if (tydir > 0) {
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if (typos == scp->ysize - 1)
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tydir = -1;
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} else {
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if (typos == 0) tydir = 1;
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}
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txpos += txdir; typos += tydir;
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draw_daemon(dxpos, dypos, dxdir);
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draw_string(txpos, typos, (char *)message, messagelen);
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} else {
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if (scrn_blanked > 0) {
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set_border(scp->border);
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scrn_blanked = 0;
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}
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}
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}
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static int
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daemon_saver_load(struct lkm_table *lkmtp, int cmd)
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{
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int err;
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messagelen = strlen(hostname) + 3 + strlen(ostype) + 1 +
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strlen(osrelease);
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message = malloc(messagelen + 1, M_DEVBUF, M_WAITOK);
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sprintf(message, "%s - %s %s", hostname, ostype, osrelease);
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err = add_scrn_saver(daemon_saver);
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if (err != 0)
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free(message, M_DEVBUF);
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return err;
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}
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static int
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daemon_saver_unload(struct lkm_table *lkmtp, int cmd)
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{
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int err;
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err = remove_scrn_saver(daemon_saver);
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if (err == 0)
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free(message, M_DEVBUF);
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return err;
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}
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int
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daemon_saver_mod(struct lkm_table *lkmtp, int cmd, int ver)
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{
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MOD_DISPATCH(daemon_saver, lkmtp, cmd, ver,
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daemon_saver_load, daemon_saver_unload, lkm_nullcmd);
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}
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