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_inferior ()
{
if (gdb_has_a_terminal () && terminal_is_ours
&& inferior_thisrun_terminal == 0)
{
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, tflags_inferior);
result = fcntl (0, F_SETFL, tflags_inferior);
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, inferior_ttystate);
OOPSY ("setting tty state");
if (!job_control)
{
sigint_ours = (void (*) ()) signal (SIGINT, SIG_IGN);
sigquit_ours = (void (*) ()) signal (SIGQUIT, SIG_IGN);
}
/* 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, inferior_process_group);
if (!attach_flag)
OOPSY ("tcsetpgrp");
#endif
#ifdef HAVE_SGTTY
result = ioctl (0, TIOCSPGRP, &inferior_process_group);
if (!attach_flag)
OOPSY ("TIOCSPGRP");
#endif
}
}
terminal_is_ours = 0;
}
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);
}
}
static void
show_interactive_mode (struct ui_file *file, int from_tty,
struct cmd_list_element *c,
const char *value)
{
if (interactive_mode == AUTO_BOOLEAN_AUTO)
fprintf_filtered (file, "Debugger's interactive mode "
"is %s (currently %s).\n",
value, gdb_has_a_terminal () ? "on" : "off");
else
fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
}
void
terminal_init_inferior ()
{
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)
free (inferior_ttystate);
inferior_ttystate = SERIAL_GET_TTY_STATE (stdin_serial);
#ifdef PROCESS_GROUP_TYPE
inferior_process_group = inferior_pid;
#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;
}
}
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;
}
}
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;
}
}
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
child_terminal_inferior (struct target_ops *self)
{
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;
}
void
child_terminal_info (char *args, int from_tty)
{
if (!gdb_has_a_terminal ())
{
printf_filtered ("This GDB does not control a terminal.\n");
return;
}
printf_filtered ("Inferior's terminal status (currently saved by GDB):\n");
/* First the fcntl flags. */
{
int flags;
flags = tflags_inferior;
printf_filtered ("File descriptor flags = ");
#ifndef O_ACCMODE
#define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
#endif
/* (O_ACCMODE) parens are to avoid Ultrix header file bug */
switch (flags & (O_ACCMODE))
{
case O_RDONLY:
printf_filtered ("O_RDONLY");
break;
case O_WRONLY:
printf_filtered ("O_WRONLY");
break;
case O_RDWR:
printf_filtered ("O_RDWR");
break;
}
flags &= ~(O_ACCMODE);
#ifdef O_NONBLOCK
if (flags & O_NONBLOCK)
printf_filtered (" | O_NONBLOCK");
flags &= ~O_NONBLOCK;
#endif
#if defined (O_NDELAY)
/* If O_NDELAY and O_NONBLOCK are defined to the same thing, we will
print it as O_NONBLOCK, which is good cause that is what POSIX
has, and the flag will already be cleared by the time we get here. */
if (flags & O_NDELAY)
printf_filtered (" | O_NDELAY");
flags &= ~O_NDELAY;
#endif
if (flags & O_APPEND)
printf_filtered (" | O_APPEND");
flags &= ~O_APPEND;
#if defined (O_BINARY)
if (flags & O_BINARY)
printf_filtered (" | O_BINARY");
flags &= ~O_BINARY;
#endif
if (flags)
printf_filtered (" | 0x%x", flags);
printf_filtered ("\n");
}
#ifdef PROCESS_GROUP_TYPE
printf_filtered ("Process group = %d\n",
(int) inferior_process_group);
#endif
serial_print_tty_state (stdin_serial, inferior_ttystate, gdb_stdout);
}