void
gdb_save_tty_state (void)
{
if (gdb_has_a_terminal ())
{
xfree (our_terminal_info.ttystate);
our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
}
}
void
terminal_save_ours (void)
{
if (gdb_has_a_terminal ())
{
/* We could just as well copy our_ttystate (if we felt like adding
a new function serial_copy_tty_state). */
xfree (our_terminal_info.ttystate);
our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
}
}
/* Does GDB have a terminal (on stdin)? */
int
gdb_has_a_terminal (void)
{
switch (gdb_has_a_terminal_flag)
{
case yes:
return 1;
case no:
return 0;
case have_not_checked:
/* Get all the current tty settings (including whether we have a
tty at all!). Can't do this in _initialize_inflow because
serial_fdopen() won't work until the serial_ops_list is
initialized. */
#ifdef F_GETFL
tflags_ours = fcntl (0, F_GETFL, 0);
#endif
gdb_has_a_terminal_flag = no;
stdin_serial = serial_fdopen (0);
if (stdin_serial != NULL)
{
our_ttystate = serial_get_tty_state (stdin_serial);
if (our_ttystate != NULL)
{
gdb_has_a_terminal_flag = yes;
#ifdef HAVE_TERMIOS
our_process_group = tcgetpgrp (0);
#endif
#ifdef HAVE_TERMIO
our_process_group = getpgrp ();
#endif
#ifdef HAVE_SGTTY
ioctl (0, TIOCGPGRP, &our_process_group);
#endif
}
}
return gdb_has_a_terminal_flag == yes;
default:
/* "Can't happen". */
return 0;
}
}
/* Does GDB have a terminal (on stdin)? */
int
gdb_has_a_terminal (void)
{
if (interactive_mode != AUTO_BOOLEAN_AUTO)
return interactive_mode == AUTO_BOOLEAN_TRUE;
switch (gdb_has_a_terminal_flag)
{
case yes:
return 1;
case no:
return 0;
case have_not_checked:
/* Get all the current tty settings (including whether we have a
tty at all!). Can't do this in _initialize_inflow because
serial_fdopen() won't work until the serial_ops_list is
initialized. */
#ifdef F_GETFL
our_terminal_info.tflags = fcntl (0, F_GETFL, 0);
#endif
gdb_has_a_terminal_flag = no;
if (stdin_serial != NULL)
{
our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
if (our_terminal_info.ttystate != NULL)
{
gdb_has_a_terminal_flag = yes;
#ifdef PROCESS_GROUP_TYPE
our_terminal_info.process_group = gdb_getpgrp ();
#endif
}
}
return gdb_has_a_terminal_flag == yes;
default:
/* "Can't happen". */
return 0;
}
}
void
terminal_init_inferior_with_pgrp (int pgrp)
{
if (gdb_has_a_terminal ())
{
/* We could just as well copy our_ttystate (if we felt like
adding a new function serial_copy_tty_state()). */
if (inferior_ttystate)
xfree (inferior_ttystate);
inferior_ttystate = serial_get_tty_state (stdin_serial);
#ifdef PROCESS_GROUP_TYPE
inferior_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;
}
}
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
}
}
static void
connect_command (char *args, int fromtty)
{
int c;
char cur_esc = 0;
serial_ttystate ttystate;
struct serial *port_desc; /* TTY port */
dont_repeat ();
if (args)
fprintf_unfiltered (gdb_stderr, "This command takes no args. They have been ignored.\n");
printf_unfiltered ("[Entering connect mode. Use ~. or ~^D to escape]\n");
tty_desc = serial_fdopen (0);
port_desc = last_serial_opened;
ttystate = serial_get_tty_state (tty_desc);
serial_raw (tty_desc);
serial_raw (port_desc);
make_cleanup (cleanup_tty, ttystate);
while (1)
{
int mask;
mask = serial_wait_2 (tty_desc, port_desc, -1);
if (mask & 2)
{ /* tty input */
char cx;
while (1)
{
c = serial_readchar (tty_desc, 0);
if (c == SERIAL_TIMEOUT)
break;
if (c < 0)
perror_with_name ("connect");
cx = c;
serial_write (port_desc, &cx, 1);
switch (cur_esc)
{
case 0:
if (c == '\r')
cur_esc = c;
break;
case '\r':
if (c == '~')
cur_esc = c;
else
cur_esc = 0;
break;
case '~':
if (c == '.' || c == '\004')
return;
else
cur_esc = 0;
}
}
}
if (mask & 1)
{ /* Port input */
char cx;
while (1)
{
c = serial_readchar (port_desc, 0);
if (c == SERIAL_TIMEOUT)
break;
if (c < 0)
perror_with_name ("connect");
cx = c;
serial_write (tty_desc, &cx, 1);
}
}
}
}
