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* inflow.c: Remove unused includes of sys/param.h, etc.

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* inflow.c, ser-unix.c, ser-go32.c, ser-tcp.c, serial.h,
	terminal.h: Move all the process group stuff back to inflow.c;
	that's a better place for it and fixes problems with trying to get/set
	the process group of a tty we're doing remote debugging on.
	* terminal.h: Skip the redefine crap if HAVE_TERMIOS.
This commit is contained in:
Jim Kingdon
1993-10-08 22:18:27 +00:00
parent 5357f1287d
commit a14a8fad36
6 changed files with 158 additions and 183 deletions
Download Patch File Download Diff File Expand all files Collapse all files

123
gdb/ser-unix.c
View File

@ -33,7 +33,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
struct hardwire_ttystate
{
struct termios termios;
pid_t process_group;
};
#endif /* termios */
@ -65,13 +64,6 @@ struct hardwire_ttystate
struct ltchars ltc;
/* Line discipline flags. */
int lmode;
#ifdef SHORT_PGRP
/* This is only used for the ultra. Does it have pid_t? */
short process_group;
#else
int process_group;
#endif
};
#endif /* sgtty */
@ -110,23 +102,10 @@ get_tty_state(scb, state)
{
#ifdef HAVE_TERMIOS
extern int errno;
pid_t new_process_group;
if (tcgetattr(scb->fd, &state->termios) < 0)
return -1;
if (!job_control)
return 0;
/* Apparently, if a tty has no process group, then tcgetpgrp returns -1 with
errno == 0. In this case, set the process group to -1 so that we know to
omit resetting it later. */
new_process_group = tcgetpgrp (scb->fd);
if ((new_process_group == (pid_t)-1)
&& (errno != ENOTTY))
return -1;
errno = 0;
state->process_group = new_process_group;
return 0;
#endif
@ -146,10 +125,7 @@ get_tty_state(scb, state)
if (ioctl (scb->fd, TIOCLGET, &state->lmode) < 0)
return -1;
if (!job_control)
return 0;
return ioctl (scb->fd, TIOCGPGRP, &state->process_group);
return 0;
#endif
}
@ -162,14 +138,7 @@ set_tty_state(scb, state)
if (tcsetattr(scb->fd, TCSANOW, &state->termios) < 0)
return -1;
if (!job_control)
return 0;
/* If the tty had no process group before, then do not reset it. */
if (state->process_group == -1)
return 0;
else
return tcsetpgrp (scb->fd, state->process_group);
return 0;
#endif
#ifdef HAVE_TERMIO
@ -182,10 +151,7 @@ set_tty_state(scb, state)
if (ioctl (scb->fd, TIOCSETN, &state->sgttyb) < 0)
return -1;
if (!job_control)
return 0;
return ioctl (scb->fd, TIOCSPGRP, &state->process_group);
return 0;
#endif
}
@ -270,8 +236,6 @@ hardwire_print_tty_state (scb, ttystate)
int i;
#ifdef HAVE_TERMIOS
printf_filtered ("Process group = %d\n", state->process_group);
printf_filtered ("c_iflag = 0x%x, c_oflag = 0x%x,\n",
state->termios.c_iflag, state->termios.c_oflag);
printf_filtered ("c_cflag = 0x%x, c_lflag = 0x%x\n",
@ -300,8 +264,6 @@ hardwire_print_tty_state (scb, ttystate)
#endif
#ifdef HAVE_SGTTY
printf_filtered ("Process group = %d\n", state->process_group);
printf_filtered ("sgttyb.sg_flags = 0x%x.\n", state->sgttyb.sg_flags);
printf_filtered ("tchars: ");
@ -614,18 +576,6 @@ hardwire_setbaudrate(scb, rate)
return set_tty_state (scb, &state);
}
static int
hardwire_set_process_group (scb, ttystate, group)
serial_t scb;
serial_ttystate ttystate;
int group;
{
#if defined (HAVE_SGTTY) || defined (HAVE_TERMIOS)
((struct hardwire_ttystate *)ttystate)->process_group = group;
#endif
return 0;
}
static int
hardwire_write(scb, str, len)
serial_t scb;
@ -674,77 +624,10 @@ static struct serial_ops hardwire_ops =
hardwire_print_tty_state,
hardwire_noflush_set_tty_state,
hardwire_setbaudrate,
hardwire_set_process_group
};
int job_control;
#if defined (HAVE_TERMIOS)
#include <unistd.h>
#endif
/* 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_ser_hardwire ()
{
serial_add_interface (&hardwire_ops);
/* OK, figure out whether we have job control. */
#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_TERMIO
/* See comment at top of file about trying to support process groups
with termio. */
job_control = 0;
#endif /* termio */
#ifdef HAVE_SGTTY
#ifdef TIOCGPGRP
job_control = 1;
#else
job_control = 0;
#endif /* TIOCGPGRP */
#endif /* sgtty */
}