Index: src/process.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/process.c,v
retrieving revision 1.399
diff -c -r1.399 process.c
*** src/process.c	10 Feb 2003 13:51:43 -0000	1.399
--- src/process.c	15 Feb 2003 16:57:10 -0000
***************
*** 5104,5109 ****
--- 5104,5136 ----
    return Qnil;
  }
  
+ /* Return the foreground process group for the tty/pty that
+    the process P uses.  */
+ static int
+ emacs_get_tty_pgrp (p)
+      struct Lisp_Process *p;
+ {
+   int gid = -1;
+ 
+ #ifdef TIOCGPGRP 
+   if (ioctl (XINT (p->infd), TIOCGPGRP, &gid) == -1 && ! NILP (p->tty_name))
+     {
+       int fd;
+       /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
+ 	 master side.  Try the slave side.  */
+       fd = emacs_open (XSTRING (p->tty_name)->data, O_RDONLY, 0);
+ 
+       if (fd != -1)
+ 	{
+ 	  ioctl (fd, TIOCGPGRP, &gid);
+ 	  emacs_close (fd);
+ 	}
+     }
+ #endif /* defined (TIOCGPGRP ) */
+ 
+   return gid;
+ }
+ 
  DEFUN ("process-running-child-p", Fprocess_running_child_p,
         Sprocess_running_child_p, 0, 1, 0,
         doc: /* Return t if PROCESS has given the terminal to a child.
***************
*** 5114,5120 ****
  {
    /* Initialize in case ioctl doesn't exist or gives an error,
       in a way that will cause returning t.  */
!   int gid = 0;
    Lisp_Object proc;
    struct Lisp_Process *p;
  
--- 5141,5147 ----
  {
    /* Initialize in case ioctl doesn't exist or gives an error,
       in a way that will cause returning t.  */
!   int gid;
    Lisp_Object proc;
    struct Lisp_Process *p;
  
***************
*** 5128,5139 ****
      error ("Process %s is not active",
  	   SDATA (p->name));
  
! #ifdef TIOCGPGRP
!   if (!NILP (p->subtty))
!     ioctl (XFASTINT (p->subtty), TIOCGPGRP, &gid);
!   else
!     ioctl (XINT (p->infd), TIOCGPGRP, &gid);
! #endif /* defined (TIOCGPGRP ) */
  
    if (gid == XFASTINT (p->pid))
      return Qnil;
--- 5155,5161 ----
      error ("Process %s is not active",
  	   SDATA (p->name));
  
!   gid = emacs_get_tty_pgrp (p);
  
    if (gid == XFASTINT (p->pid))
      return Qnil;
***************
*** 5285,5303 ****
  	 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
  	 His patch indicates that if TIOCGPGRP returns an error, then
  	 we should just assume that p->pid is also the process group id.  */
-       {
- 	int err;
  
! 	if (!NILP (p->subtty))
! 	  err = ioctl (XFASTINT (p->subtty), TIOCGPGRP, &gid);
! 	else
! 	  err = ioctl (XINT (p->infd), TIOCGPGRP, &gid);
! 
! 	if (err == -1)
! 	  /* If we can't get the information, assume
! 	     the shell owns the tty.  */
! 	  gid = XFASTINT (p->pid);
!       }
  
        /* It is not clear whether anything really can set GID to -1.
  	 Perhaps on some system one of those ioctls can or could do so.
--- 5307,5319 ----
  	 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
  	 His patch indicates that if TIOCGPGRP returns an error, then
  	 we should just assume that p->pid is also the process group id.  */
  
!       gid = emacs_get_tty_pgrp (p);
! 	
!       if (gid == -1)
! 	/* If we can't get the information, assume
! 	   the shell owns the tty.  */
! 	gid = XFASTINT (p->pid);
  
        /* It is not clear whether anything really can set GID to -1.
  	 Perhaps on some system one of those ioctls can or could do so.
***************
*** 5359,5365 ****
    /* gid may be a pid, or minus a pgrp's number */
  #ifdef TIOCSIGSEND
    if (!NILP (current_group))
!     ioctl (XINT (p->infd), TIOCSIGSEND, signo);
    else
      {
        gid = - XFASTINT (p->pid);
--- 5375,5384 ----
    /* gid may be a pid, or minus a pgrp's number */
  #ifdef TIOCSIGSEND
    if (!NILP (current_group))
!     {
!       if (ioctl (XINT (p->infd), TIOCSIGSEND, signo) == -1)
! 	EMACS_KILLPG (gid, signo);
!     }
    else
      {
        gid = - XFASTINT (p->pid);