void
child_terminal_init_with_pgrp (int pgrp)
{
struct inferior *inf = current_inferior ();
struct terminal_info *tinfo = get_inflow_inferior_data (inf);
#ifdef PROCESS_GROUP_TYPE
/* Store the process group even without a terminal as it is used not
only to reset the tty foreground process group, but also to
interrupt the inferior. */
tinfo->process_group = pgrp;
#endif
if (gdb_has_a_terminal ())
{
xfree (tinfo->ttystate);
tinfo->ttystate = serial_copy_tty_state (stdin_serial,
our_terminal_info.ttystate);
/* Make sure that next time we call terminal_inferior (which will be
before the program runs, as it needs to be), we install the new
process group. */
terminal_is_ours = 1;
}
}
void
terminal_init_inferior_with_pgrp (int pgrp)
{
if (gdb_has_a_terminal ())
{
struct inferior *inf = current_inferior ();
struct terminal_info *tinfo = get_inflow_inferior_data (inf);
xfree (tinfo->ttystate);
tinfo->ttystate = serial_copy_tty_state (stdin_serial,
our_terminal_info.ttystate);
#ifdef PROCESS_GROUP_TYPE
tinfo->process_group = pgrp;
#endif
/* Make sure that next time we call terminal_inferior (which will be
before the program runs, as it needs to be), we install the new
process group. */
terminal_is_ours = 1;
}
}
PROCESS_GROUP_TYPE
inferior_process_group (void)
{
return get_inflow_inferior_data (current_inferior ())->process_group;
}
static void
terminal_ours_1 (int output_only)
{
struct inferior *inf;
struct terminal_info *tinfo;
if (terminal_is_ours)
return;
terminal_is_ours = 1;
/* Checking inferior->run_terminal is necessary so that
if GDB is running in the background, it won't block trying
to do the ioctl()'s below. Checking gdb_has_a_terminal
avoids attempting all the ioctl's when running in batch. */
inf = current_inferior ();
tinfo = get_inflow_inferior_data (inf);
if (tinfo->run_terminal != NULL || gdb_has_a_terminal () == 0)
return;
{
#ifdef SIGTTOU
/* Ignore this signal since it will happen when we try to set the
pgrp. */
void (*osigttou) () = NULL;
#endif
int result;
#ifdef SIGTTOU
if (job_control)
osigttou = (void (*)()) signal (SIGTTOU, SIG_IGN);
#endif
xfree (tinfo->ttystate);
tinfo->ttystate = serial_get_tty_state (stdin_serial);
#ifdef PROCESS_GROUP_TYPE
if (!inf->attach_flag)
/* If setpgrp failed in terminal_inferior, this would give us
our process group instead of the inferior's. See
terminal_inferior for details. */
tinfo->process_group = gdb_getpgrp ();
#endif
/* Here we used to set ICANON in our ttystate, but I believe this
was an artifact from before when we used readline. Readline sets
the tty state when it needs to.
FIXME-maybe: However, query() expects non-raw mode and doesn't
use readline. Maybe query should use readline (on the other hand,
this only matters for HAVE_SGTTY, not termio or termios, I think). */
/* Set tty state to our_ttystate. We don't change in our out of raw
mode, to avoid flushing input. We need to do the same thing
regardless of output_only, because we don't have separate
terminal_is_ours and terminal_is_ours_for_output flags. It's OK,
though, since readline will deal with raw mode when/if it needs to.
*/
serial_noflush_set_tty_state (stdin_serial, our_terminal_info.ttystate,
tinfo->ttystate);
if (job_control)
{
#ifdef HAVE_TERMIOS
result = tcsetpgrp (0, our_terminal_info.process_group);
#if 0
/* This fails on Ultrix with EINVAL if you run the testsuite
in the background with nohup, and then log out. GDB never
used to check for an error here, so perhaps there are other
such situations as well. */
if (result == -1)
fprintf_unfiltered (gdb_stderr, "[tcsetpgrp failed in terminal_ours: %s]\n",
safe_strerror (errno));
#endif
#endif /* termios */
#ifdef HAVE_SGTTY
result = ioctl (0, TIOCSPGRP, &our_terminal_info.process_group);
#endif
}
#ifdef SIGTTOU
if (job_control)
signal (SIGTTOU, osigttou);
#endif
if (!job_control)
{
signal (SIGINT, sigint_ours);
#ifdef SIGQUIT
signal (SIGQUIT, sigquit_ours);
#endif
}
#ifdef F_GETFL
tinfo->tflags = fcntl (0, F_GETFL, 0);
/* Is there a reason this is being done twice? It happens both
places we use F_SETFL, so I'm inclined to think perhaps there
is some reason, however perverse. Perhaps not though... */
result = fcntl (0, F_SETFL, our_terminal_info.tflags);
result = fcntl (0, F_SETFL, our_terminal_info.tflags);
#endif
}
}
void
terminal_inferior (void)
{
struct inferior *inf;
struct terminal_info *tinfo;
if (!terminal_is_ours)
return;
inf = current_inferior ();
tinfo = get_inflow_inferior_data (inf);
if (gdb_has_a_terminal ()
&& tinfo->ttystate != NULL
&& tinfo->run_terminal == NULL)
{
int result;
#ifdef F_GETFL
/* Is there a reason this is being done twice? It happens both
places we use F_SETFL, so I'm inclined to think perhaps there
is some reason, however perverse. Perhaps not though... */
result = fcntl (0, F_SETFL, tinfo->tflags);
result = fcntl (0, F_SETFL, tinfo->tflags);
OOPSY ("fcntl F_SETFL");
#endif
/* Because we were careful to not change in or out of raw mode in
terminal_ours, we will not change in our out of raw mode with
this call, so we don't flush any input. */
result = serial_set_tty_state (stdin_serial,
tinfo->ttystate);
OOPSY ("setting tty state");
if (!job_control)
{
sigint_ours = (void (*)()) signal (SIGINT, SIG_IGN);
#ifdef SIGQUIT
sigquit_ours = (void (*)()) signal (SIGQUIT, SIG_IGN);
#endif
}
/* If attach_flag is set, we don't know whether we are sharing a
terminal with the inferior or not. (attaching a process
without a terminal is one case where we do not; attaching a
process which we ran from the same shell as GDB via `&' is
one case where we do, I think (but perhaps this is not
`sharing' in the sense that we need to save and restore tty
state)). I don't know if there is any way to tell whether we
are sharing a terminal. So what we do is to go through all
the saving and restoring of the tty state, but ignore errors
setting the process group, which will happen if we are not
sharing a terminal). */
if (job_control)
{
#ifdef HAVE_TERMIOS
result = tcsetpgrp (0, tinfo->process_group);
if (!inf->attach_flag)
OOPSY ("tcsetpgrp");
#endif
#ifdef HAVE_SGTTY
result = ioctl (0, TIOCSPGRP, &tinfo->process_group);
if (!inf->attach_flag)
OOPSY ("TIOCSPGRP");
#endif
}
}
terminal_is_ours = 0;
}
