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jcs's openbsd hax
openbsd
1/* $OpenBSD: spawn.c,v 1.13 2023/03/08 04:43:11 guenther Exp $ */
2
3/* This file is in the public domain. */
4
5/*
6 * Spawn. Actually just suspends Mg.
7 * Assumes POSIX job control.
8 */
9
10#include <sys/queue.h>
11#include <signal.h>
12#include <stdio.h>
13#include <term.h>
14#include <termios.h>
15
16#include "def.h"
17
18/*
19 * This causes mg to send itself a stop signal. It assumes the parent
20 * shell supports POSIX job control. If the terminal supports an alternate
21 * screen, we will switch to it.
22 */
23int
24spawncli(int f, int n)
25{
26 sigset_t oset;
27
28 /* Very similar to what vttidy() does. */
29 ttcolor(CTEXT);
30 ttnowindow();
31 ttmove(nrow - 1, 0);
32 if (epresf != FALSE) {
33 tteeol();
34 epresf = FALSE;
35 }
36 if (ttcooked() == FALSE)
37 return (FALSE);
38
39 /* Exit application mode and tidy. */
40 tttidy();
41 ttflush();
42 (void)sigprocmask(SIG_SETMASK, NULL, &oset);
43 (void)kill(0, SIGTSTP);
44 (void)sigprocmask(SIG_SETMASK, &oset, NULL);
45 ttreinit();
46
47 /* Force repaint. */
48 sgarbf = TRUE;
49 return (ttraw());
50}