mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-03 09:00:21 +00:00
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
|
|
/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
|
|
* details. If they are missing then this copy is in violation of *
|
|
* the copyright conditions. */
|
|
|
|
/*
|
|
** lib_tstp.c
|
|
**
|
|
** The routine tstp().
|
|
**
|
|
*/
|
|
|
|
#include "curses.priv.h"
|
|
#include "terminfo.h"
|
|
#ifdef SVR4_ACTION
|
|
#define _POSIX_SOURCE
|
|
#endif
|
|
#include <signal.h>
|
|
|
|
void tstp(int dummy)
|
|
{
|
|
sigaction_t act, oact;
|
|
sigset_t mask, omask;
|
|
|
|
T(("tstp() called"));
|
|
|
|
/*
|
|
* The user may have changed the prog_mode tty bits, so save them.
|
|
*/
|
|
def_prog_mode();
|
|
|
|
/*
|
|
* Block window change and timer signals. The latter
|
|
* is because applications use timers to decide when
|
|
* to repaint the screen.
|
|
*/
|
|
(void)sigemptyset(&mask);
|
|
(void)sigaddset(&mask, SIGALRM);
|
|
#ifdef SIGWINCH
|
|
(void)sigaddset(&mask, SIGWINCH);
|
|
#endif
|
|
(void)sigprocmask(SIG_BLOCK, &mask, &omask);
|
|
|
|
endwin();
|
|
|
|
sigemptyset(&mask);
|
|
sigaddset(&mask, SIGTSTP);
|
|
sigprocmask(SIG_UNBLOCK, &mask, NULL);
|
|
|
|
act.sa_handler = SIG_DFL;
|
|
sigemptyset(&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
#ifdef SA_RESTART
|
|
act.sa_flags |= SA_RESTART;
|
|
#endif
|
|
sigaction(SIGTSTP, &act, &oact);
|
|
kill(getpid(), SIGTSTP);
|
|
|
|
T(("SIGCONT received"));
|
|
sigaction(SIGTSTP, &oact, NULL);
|
|
flushinp();
|
|
|
|
/*
|
|
* If the user modified the tty state while suspended, he wants
|
|
* those changes to stick. So save the new "default" terminal state.
|
|
*/
|
|
def_shell_mode();
|
|
|
|
/*
|
|
* This relies on the fact that doupdate() will restore the
|
|
* program-mode tty state, and issue enter_ca_mode if need be.
|
|
*/
|
|
doupdate();
|
|
|
|
/* Reset the signals. */
|
|
(void)sigprocmask(SIG_SETMASK, &omask, NULL);
|
|
}
|
|
|