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* ser-unix.c: Don't try to use job control with termio.

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This commit is contained in:
Jim Kingdon 1993-07-19 18:51:00 +00:00
parent ffffc8fb5c
commit dc34b11d9d
2 changed files with 26 additions and 21 deletions
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4
gdb/ChangeLog
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@ -1,3 +1,7 @@
Mon Jul 19 11:48:57 1993 Jim Kingdon (kingdon@deneb.cygnus.com)
* ser-unix.c: Don't try to use job control with termio.
Sun Jul 18 23:11:28 1993 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
and Jim Kingdon (kingdon@cygnus.com)

43
gdb/ser-unix.c
View file

@ -35,17 +35,21 @@ struct hardwire_ttystate
struct termios termios;
pid_t process_group;
};
#endif
#endif /* termios */
#ifdef HAVE_TERMIO
#include <termio.h>
/* It is believed that all systems which have added job control to SVR3
(e.g. sco) have also added termios. Even if not, trying to figure out
all the variations (TIOCGPGRP vs. TCGETPGRP, etc.) would be pretty
bewildering. So we don't attempt it. */
struct hardwire_ttystate
{
struct termio termio;
int process_group;
};
#endif
#endif /* termio */
#ifdef HAVE_SGTTY
/* Needed for the code which uses select(). We would include <sys/select.h>
@ -69,7 +73,7 @@ struct hardwire_ttystate
int process_group;
#endif
};
#endif
#endif /* sgtty */
static int hardwire_open PARAMS ((serial_t scb, const char *name));
static void hardwire_raw PARAMS ((serial_t scb));
@ -123,11 +127,7 @@ get_tty_state(scb, state)
#ifdef HAVE_TERMIO
if (ioctl (scb->fd, TCGETA, &state->termio) < 0)
return -1;
if (!job_control)
return 0;
return ioctl (scb->fd, TIOCGPGRP, &state->process_group);
return 0;
#endif
#ifdef HAVE_SGTTY
@ -167,12 +167,6 @@ set_tty_state(scb, state)
#ifdef HAVE_TERMIO
if (ioctl (scb->fd, TCSETA, &state->termio) < 0)
return -1;
if (!job_control)
return 0;
/* Need to ignore errors, at least if attach_flag is set. */
ioctl (scb->fd, TIOCSPGRP, &state->process_group);
return 0;
#endif
@ -269,9 +263,9 @@ hardwire_print_tty_state (scb, ttystate)
struct hardwire_ttystate *state = (struct hardwire_ttystate *) ttystate;
int i;
#ifdef HAVE_TERMIOS
printf_filtered ("Process group = %d\n", state->process_group);
#ifdef HAVE_TERMIOS
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",
@ -300,6 +294,8 @@ 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: ");
@ -569,7 +565,9 @@ hardwire_set_process_group (scb, ttystate, group)
serial_ttystate ttystate;
int group;
{
#if defined (HAVE_SGTTY) || defined (HAVE_TERMIOS)
((struct hardwire_ttystate *)ttystate)->process_group = group;
#endif
return 0;
}
@ -669,21 +667,24 @@ _initialize_ser_hardwire ()
/* Do all systems with termios have the POSIX way of identifying job
control? I hope so. */
#ifdef _POSIX_JOB_CONTROL
/* AIX defines _POSIX_JOB_CONTROL to an empty string, so I guess
defining _POSIX_JOB_CONTROL to 0 to mean no job control doesn't work
(I don't have the standard handy). */
job_control = 1;
#else
job_control = sysconf (_SC_JOB_CONTROL);
#endif
#endif /* termios */
#else /* not 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 */
#endif /* not termios. */
}