[ please answer in and set followup to "comp.os.linux. setup" ]
Well ... I've been using Windows for a long time before I switched to
Linux. I'm very used to type CTRL-ALT-DEL everytime I'm leaving my
computer or arriving to it. It's hapenned _twice_ (in the last six
months or so) for my Linux box.
I want to be able to reboot my machine with CTRL-ALT-DEL, but I don't
want to do it by mistake.
So, I noticed /etc/inittab has these lines
# What to do when CTRL-ALT-DEL is pressed.
ca:12345:ctrlal tdel:/sbin/shutdown -t1 -a -r now
and thought I'd change them to call another program. Looked around for
something that would allow me to choose what to do; couldn't find one,
so I did my own.
[ source at the bottom ]
Now /etc/inittab reads
# What to do when CTRL-ALT-DEL is pressed.
#ca:12345:ctrla ltdel:/sbin/shutdown -t1 -a -r now
ca:12345:ctrlal tdel:/sbin/my_shutdown
Before I test it (I really don't want to)
any thoughts? other ideas? advice?
[ comments to the code please post in and set followup to "comp.lang. c" ]
I'm very new to C, this is basically a copy of an example at
http://en.tldp.org/HOWTO/NCURSES-Programming-HOWTO/
#v+
#include <curses.h>
#include <unistd.h>
#define WIDTH 50
#define HEIGHT 6
int startx=0;
int starty=0;
char *choices[]={" Shutdown ", " Reboot ", " Cancel "};
int n_choices = sizeof(choices) / sizeof(char *);
void print_menu(WIND OW *menu_win, int highlight);
int main(void) {
WINDOW *menu_win;
int highlight=3;
int choice=0;
int c;
initscr();
clear();
noecho();
cbreak();
startx=(80 - WIDTH)/2;
starty=(24 - HEIGHT)/2;
menu_win = newwin(HEIGHT, WIDTH, starty, startx);
keypad(menu_win , TRUE);
print_menu(menu _win, highlight);
while(1) {
c=wgetch(menu_w in);
switch(c) {
case KEY_LEFT:
if (highlight==1) highlight=n_cho ices;
else --highlight;
break;
case KEY_RIGHT:
if (highlight==n_c hoices) highlight=1;
else ++highlight;
break;
case 10:
choice=highligh t;
break;
default:
refresh();
break;
}
print_menu(menu _win, highlight);
if (choice != 0) break; // exit the infinite loop
}
refresh();
endwin();
switch (choice) {
case 1: execl("/sbin/shutdown", "/sbin/shutdown", "-t1", "-a", "-h now", NULL); break;
case 2: execl("/sbin/shutdown", "/sbin/shutdown", "-t1", "-a", "-r now", NULL); break;
case 3: break;
}
return 0;
}
void print_menu(WIND OW *menu_win, int highlight) {
int x, y, i;
x = 2;
y = 4;
box(menu_win, 0, 0);
mvwprintw(menu_ win, 1, 1, "You pressed Ctrl+Alt+Del. What did you mean?");
for (i=0; i<n_choices; ++i) {
if (highlight == i+1) { // highlight the present choice
wattron(menu_wi n, A_REVERSE);
mvwprintw(menu_ win, y, x, "%s", choices[i]);
wattroff(menu_w in, A_REVERSE);
} else mvwprintw(menu_ win, y, x, "%s", choices[i]);
x+=12;
}
wrefresh(menu_w in);
}
#v-
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