1: /* Copyright (C) 1998, 2007 Free Software Foundation, Inc.
    2:    This file is part of the GNU C Library.
    3:    Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
    4: 
    5:    The GNU C Library is free software; you can redistribute it and/or
    6:    modify it under the terms of the GNU Lesser General Public
    7:    License as published by the Free Software Foundation; either
    8:    version 2.1 of the License, or (at your option) any later version.
    9: 
   10:    The GNU C Library is distributed in the hope that it will be useful,
   11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13:    Lesser General Public License for more details.
   14: 
   15:    You should have received a copy of the GNU Lesser General Public
   16:    License along with the GNU C Library; if not, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: #include <sys/types.h>
   21: #include <termios.h>
   22: #include <unistd.h>
   23: #include <utmp.h>
   24: #include <pty.h>
   25: 
   26: int
   27: forkpty (amaster, name, termp, winp)
   28:      int *amaster;
   29:      char *name;
   30:      struct termios *termp;
   31:      struct winsize *winp;
   32: {
   33:   int master, slave, pid;
   34: 
   35:   if (openpty (&master, &slave, name, termp, winp) == -1)
   36:     return -1;
   37: 
   38:   switch (pid = fork ())
   39:     {
   40:     case -1:
   41:       close (master);
   42:       close (slave);
   43:       return -1;
   44:     case 0:
   45:       /* Child.  */
   46:       close (master);
   47:       if (login_tty (slave))
   48:         _exit (1);
   49: 
   50:       return 0;
   51:     default:
   52:       /* Parent.  */
   53:       *amaster = master;
   54:       close (slave);
   55: 
   56:       return pid;
   57:     }
   58: }