199b2450f6
Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
666 lines
18 KiB
C
666 lines
18 KiB
C
/* Low level interface to ptrace, for GDB when running under Unix.
|
||
Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "frame.h"
|
||
#include "inferior.h"
|
||
#include "command.h"
|
||
#include "signals.h"
|
||
#include "serial.h"
|
||
#include "terminal.h"
|
||
#include "target.h"
|
||
#include "thread.h"
|
||
|
||
#include <signal.h>
|
||
#include <fcntl.h>
|
||
|
||
#if !defined (HAVE_TERMIOS) && !defined (HAVE_TERMIO) && !defined (HAVE_SGTTY) && !defined (__GO32__)
|
||
#define HAVE_SGTTY
|
||
#endif
|
||
|
||
#if defined (HAVE_TERMIOS)
|
||
#include <termios.h>
|
||
#include <unistd.h>
|
||
#endif
|
||
|
||
#ifdef HAVE_TERMIOS
|
||
#define PROCESS_GROUP_TYPE pid_t
|
||
#endif
|
||
|
||
#ifdef HAVE_SGTTY
|
||
#ifdef SHORT_PGRP
|
||
/* This is only used for the ultra. Does it have pid_t? */
|
||
#define PROCESS_GROUP_TYPE short
|
||
#else
|
||
#define PROCESS_GROUP_TYPE int
|
||
#endif
|
||
#endif /* sgtty */
|
||
|
||
static void
|
||
kill_command PARAMS ((char *, int));
|
||
|
||
static void
|
||
terminal_ours_1 PARAMS ((int));
|
||
|
||
/* Nonzero if we are debugging an attached outside process
|
||
rather than an inferior. */
|
||
|
||
int attach_flag;
|
||
|
||
|
||
/* Record terminal status separately for debugger and inferior. */
|
||
|
||
static serial_t stdin_serial;
|
||
|
||
/* TTY state for the inferior. We save it whenever the inferior stops, and
|
||
restore it when it resumes. */
|
||
static serial_ttystate inferior_ttystate;
|
||
|
||
/* Our own tty state, which we restore every time we need to deal with the
|
||
terminal. We only set it once, when GDB first starts. The settings of
|
||
flags which readline saves and restores and unimportant. */
|
||
static serial_ttystate our_ttystate;
|
||
|
||
/* fcntl flags for us and the inferior. Saved and restored just like
|
||
{our,inferior}_ttystate. */
|
||
static int tflags_inferior;
|
||
static int tflags_ours;
|
||
|
||
#ifdef PROCESS_GROUP_TYPE
|
||
/* Process group for us and the inferior. Saved and restored just like
|
||
{our,inferior}_ttystate. */
|
||
PROCESS_GROUP_TYPE our_process_group;
|
||
PROCESS_GROUP_TYPE inferior_process_group;
|
||
#endif
|
||
|
||
/* While the inferior is running, we want SIGINT and SIGQUIT to go to the
|
||
inferior only. If we have job control, that takes care of it. If not,
|
||
we save our handlers in these two variables and set SIGINT and SIGQUIT
|
||
to SIG_IGN. */
|
||
static void (*sigint_ours) ();
|
||
static void (*sigquit_ours) ();
|
||
|
||
/* The name of the tty (from the `tty' command) that we gave to the inferior
|
||
when it was last started. */
|
||
|
||
static char *inferior_thisrun_terminal;
|
||
|
||
/* Nonzero if our terminal settings are in effect. Zero if the
|
||
inferior's settings are in effect. Ignored if !gdb_has_a_terminal
|
||
(). */
|
||
|
||
static int terminal_is_ours;
|
||
|
||
enum {yes, no, have_not_checked} gdb_has_a_terminal_flag = have_not_checked;
|
||
|
||
/* Does GDB have a terminal (on stdin)? */
|
||
int
|
||
gdb_has_a_terminal ()
|
||
{
|
||
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_SGTTY
|
||
ioctl (0, TIOCGPGRP, &our_process_group);
|
||
#endif
|
||
}
|
||
}
|
||
|
||
return gdb_has_a_terminal_flag == yes;
|
||
default:
|
||
/* "Can't happen". */
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Macro for printing errors from ioctl operations */
|
||
|
||
#define OOPSY(what) \
|
||
if (result == -1) \
|
||
fprintf_unfiltered(gdb_stderr, "[%s failed in terminal_inferior: %s]\n", \
|
||
what, strerror (errno))
|
||
|
||
static void terminal_ours_1 PARAMS ((int));
|
||
|
||
/* Initialize the terminal settings we record for the inferior,
|
||
before we actually run the inferior. */
|
||
|
||
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;
|
||
}
|
||
}
|
||
|
||
/* Put the inferior's terminal settings into effect.
|
||
This is preparation for starting or resuming the inferior. */
|
||
|
||
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;
|
||
}
|
||
|
||
/* Put some of our terminal settings into effect,
|
||
enough to get proper results from our output,
|
||
but do not change into or out of RAW mode
|
||
so that no input is discarded.
|
||
|
||
After doing this, either terminal_ours or terminal_inferior
|
||
should be called to get back to a normal state of affairs. */
|
||
|
||
void
|
||
terminal_ours_for_output ()
|
||
{
|
||
terminal_ours_1 (1);
|
||
}
|
||
|
||
/* Put our terminal settings into effect.
|
||
First record the inferior's terminal settings
|
||
so they can be restored properly later. */
|
||
|
||
void
|
||
terminal_ours ()
|
||
{
|
||
terminal_ours_1 (0);
|
||
}
|
||
|
||
/* output_only is not used, and should not be used unless we introduce
|
||
separate terminal_is_ours and terminal_is_ours_for_output
|
||
flags. */
|
||
|
||
static void
|
||
terminal_ours_1 (output_only)
|
||
int output_only;
|
||
{
|
||
/* Checking inferior_thisrun_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. */
|
||
if (inferior_thisrun_terminal != 0 || gdb_has_a_terminal () == 0)
|
||
return;
|
||
|
||
if (!terminal_is_ours)
|
||
{
|
||
/* Ignore this signal since it will happen when we try to set the
|
||
pgrp. */
|
||
void (*osigttou) ();
|
||
int result;
|
||
|
||
terminal_is_ours = 1;
|
||
|
||
#ifdef SIGTTOU
|
||
if (job_control)
|
||
osigttou = (void (*) ()) signal (SIGTTOU, SIG_IGN);
|
||
#endif
|
||
|
||
if (inferior_ttystate)
|
||
free (inferior_ttystate);
|
||
inferior_ttystate = SERIAL_GET_TTY_STATE (stdin_serial);
|
||
#ifdef HAVE_TERMIOS
|
||
inferior_process_group = tcgetpgrp (0);
|
||
#endif
|
||
#ifdef HAVE_SGTTY
|
||
ioctl (0, TIOCGPGRP, &inferior_process_group);
|
||
#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. */
|
||
|
||
/* 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_ttystate,
|
||
inferior_ttystate);
|
||
|
||
if (job_control)
|
||
{
|
||
#ifdef HAVE_TERMIOS
|
||
result = tcsetpgrp (0, our_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",
|
||
strerror (errno));
|
||
#endif
|
||
#endif /* termios */
|
||
|
||
#ifdef HAVE_SGTTY
|
||
result = ioctl (0, TIOCSPGRP, &our_process_group);
|
||
#endif
|
||
}
|
||
|
||
#ifdef SIGTTOU
|
||
if (job_control)
|
||
signal (SIGTTOU, osigttou);
|
||
#endif
|
||
|
||
if (!job_control)
|
||
{
|
||
signal (SIGINT, sigint_ours);
|
||
signal (SIGQUIT, sigquit_ours);
|
||
}
|
||
|
||
#ifdef F_GETFL
|
||
tflags_inferior = 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, tflags_ours);
|
||
result = fcntl (0, F_SETFL, tflags_ours);
|
||
#endif
|
||
|
||
result = result; /* lint */
|
||
}
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
void
|
||
term_info (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
target_terminal_info (arg, from_tty);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
void
|
||
child_terminal_info (args, from_tty)
|
||
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", inferior_process_group);
|
||
#endif
|
||
|
||
SERIAL_PRINT_TTY_STATE (stdin_serial, inferior_ttystate);
|
||
}
|
||
|
||
/* NEW_TTY_PREFORK is called before forking a new child process,
|
||
so we can record the state of ttys in the child to be formed.
|
||
TTYNAME is null if we are to share the terminal with gdb;
|
||
or points to a string containing the name of the desired tty.
|
||
|
||
NEW_TTY is called in new child processes under Unix, which will
|
||
become debugger target processes. This actually switches to
|
||
the terminal specified in the NEW_TTY_PREFORK call. */
|
||
|
||
void
|
||
new_tty_prefork (ttyname)
|
||
char *ttyname;
|
||
{
|
||
/* Save the name for later, for determining whether we and the child
|
||
are sharing a tty. */
|
||
inferior_thisrun_terminal = ttyname;
|
||
}
|
||
|
||
void
|
||
new_tty ()
|
||
{
|
||
register int tty;
|
||
|
||
if (inferior_thisrun_terminal == 0)
|
||
return;
|
||
#if !defined(__GO32__)
|
||
#ifdef TIOCNOTTY
|
||
/* Disconnect the child process from our controlling terminal. On some
|
||
systems (SVR4 for example), this may cause a SIGTTOU, so temporarily
|
||
ignore SIGTTOU. */
|
||
tty = open("/dev/tty", O_RDWR);
|
||
if (tty > 0)
|
||
{
|
||
void (*osigttou) ();
|
||
|
||
osigttou = (void (*)()) signal(SIGTTOU, SIG_IGN);
|
||
ioctl(tty, TIOCNOTTY, 0);
|
||
close(tty);
|
||
signal(SIGTTOU, osigttou);
|
||
}
|
||
#endif
|
||
|
||
/* Now open the specified new terminal. */
|
||
|
||
#ifdef USE_O_NOCTTY
|
||
tty = open(inferior_thisrun_terminal, O_RDWR | O_NOCTTY);
|
||
#else
|
||
tty = open(inferior_thisrun_terminal, O_RDWR);
|
||
#endif
|
||
if (tty == -1)
|
||
{
|
||
print_sys_errmsg (inferior_thisrun_terminal, errno);
|
||
_exit(1);
|
||
}
|
||
|
||
/* Avoid use of dup2; doesn't exist on all systems. */
|
||
if (tty != 0)
|
||
{ close (0); dup (tty); }
|
||
if (tty != 1)
|
||
{ close (1); dup (tty); }
|
||
if (tty != 2)
|
||
{ close (2); dup (tty); }
|
||
if (tty > 2)
|
||
close(tty);
|
||
#endif /* !go32 */
|
||
}
|
||
|
||
/* Kill the inferior process. Make us have no inferior. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
kill_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
/* Shouldn't this be target_has_execution? FIXME. */
|
||
if (inferior_pid == 0)
|
||
error ("The program is not being run.");
|
||
if (!query ("Kill the program being debugged? "))
|
||
error ("Not confirmed.");
|
||
target_kill ();
|
||
|
||
init_thread_list(); /* Destroy thread info */
|
||
|
||
/* Killing off the inferior can leave us with a core file. If so,
|
||
print the state we are left in. */
|
||
if (target_has_stack) {
|
||
printf_filtered ("In %s,\n", current_target->to_longname);
|
||
if (selected_frame == NULL)
|
||
fputs_filtered ("No selected stack frame.\n", gdb_stdout);
|
||
else
|
||
print_stack_frame (selected_frame, selected_frame_level, 1);
|
||
}
|
||
}
|
||
|
||
/* The inferior process has died. Long live the inferior! */
|
||
|
||
void
|
||
generic_mourn_inferior ()
|
||
{
|
||
inferior_pid = 0;
|
||
attach_flag = 0;
|
||
breakpoint_init_inferior ();
|
||
registers_changed ();
|
||
|
||
#ifdef CLEAR_DEFERRED_STORES
|
||
/* Delete any pending stores to the inferior... */
|
||
CLEAR_DEFERRED_STORES;
|
||
#endif
|
||
|
||
reopen_exec_file ();
|
||
reinit_frame_cache ();
|
||
|
||
/* It is confusing to the user for ignore counts to stick around
|
||
from previous runs of the inferior. So clear them. */
|
||
breakpoint_clear_ignore_counts ();
|
||
}
|
||
|
||
/* Call set_sigint_trap when you need to pass a signal on to an attached
|
||
process when handling SIGINT */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
pass_signal (signo)
|
||
int signo;
|
||
{
|
||
kill (inferior_pid, SIGINT);
|
||
}
|
||
|
||
static void (*osig)();
|
||
|
||
void
|
||
set_sigint_trap()
|
||
{
|
||
osig = (void (*) ()) signal (SIGINT, pass_signal);
|
||
}
|
||
|
||
void
|
||
clear_sigint_trap()
|
||
{
|
||
signal (SIGINT, osig);
|
||
}
|
||
|
||
|
||
int job_control;
|
||
|
||
/* This is here because this is where we figure out whether we (probably)
|
||
have job control. Just using job_control only does part of it because
|
||
setpgid or setpgrp might not exist on a system without job control.
|
||
It might be considered misplaced (on the other hand, process groups and
|
||
job control are closely related to ttys).
|
||
|
||
For a more clean implementation, in libiberty, put a setpgid which merely
|
||
calls setpgrp and a setpgrp which does nothing (any system with job control
|
||
will have one or the other). */
|
||
int
|
||
gdb_setpgid ()
|
||
{
|
||
int retval = 0;
|
||
if (job_control)
|
||
{
|
||
#if defined (NEED_POSIX_SETPGID) || defined (HAVE_TERMIOS)
|
||
/* Do all systems with termios have setpgid? I hope so. */
|
||
/* setpgid (0, 0) is supposed to work and mean the same thing as
|
||
this, but on Ultrix 4.2A it fails with EPERM (and
|
||
setpgid (getpid (), getpid ()) succeeds). */
|
||
retval = setpgid (getpid (), getpid ());
|
||
#else
|
||
#if defined (TIOCGPGRP)
|
||
#if defined(USG) && !defined(SETPGRP_ARGS)
|
||
retval = setpgrp ();
|
||
#else
|
||
retval = setpgrp (getpid (), getpid ());
|
||
#endif /* USG */
|
||
#endif /* TIOCGPGRP. */
|
||
#endif /* NEED_POSIX_SETPGID */
|
||
}
|
||
return retval;
|
||
}
|
||
|
||
void
|
||
_initialize_inflow ()
|
||
{
|
||
add_info ("terminal", term_info,
|
||
"Print inferior's saved terminal status.");
|
||
|
||
add_com ("kill", class_run, kill_command,
|
||
"Kill execution of program being debugged.");
|
||
|
||
inferior_pid = 0;
|
||
|
||
terminal_is_ours = 1;
|
||
|
||
/* OK, figure out whether we have job control. If neither termios nor
|
||
sgtty (i.e. termio or go32), leave job_control 0. */
|
||
|
||
#if defined (HAVE_TERMIOS)
|
||
/* Do all systems with termios have the POSIX way of identifying job
|
||
control? I hope so. */
|
||
#ifdef _POSIX_JOB_CONTROL
|
||
job_control = 1;
|
||
#else
|
||
job_control = sysconf (_SC_JOB_CONTROL);
|
||
#endif
|
||
#endif /* termios */
|
||
|
||
#ifdef HAVE_SGTTY
|
||
#ifdef TIOCGPGRP
|
||
job_control = 1;
|
||
#else
|
||
job_control = 0;
|
||
#endif /* TIOCGPGRP */
|
||
#endif /* sgtty */
|
||
}
|