Open64: osprey/libf/pxf/pxftcgetpgrp.c Source File

00001 /*
00002 
00003   Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.
00004 
00005   This program is free software; you can redistribute it and/or modify it
00006   under the terms of version 2.1 of the GNU Lesser General Public License 
00007   as published by the Free Software Foundation.
00008 
00009   This program is distributed in the hope that it would be useful, but
00010   WITHOUT ANY WARRANTY; without even the implied warranty of
00011   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
00012 
00013   Further, this software is distributed without any warranty that it is
00014   free of the rightful claim of any third person regarding infringement 
00015   or the like.  Any license provided herein, whether implied or 
00016   otherwise, applies only to this software file.  Patent licenses, if
00017   any, provided herein do not apply to combinations of this program with 
00018   other software, or any other product whatsoever.  
00019 
00020   You should have received a copy of the GNU Lesser General Public 
00021   License along with this program; if not, write the Free Software 
00022   Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 
00023   USA.
00024 
00025   Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
00026   Mountain View, CA 94043, or:
00027 
00028   http://www.sgi.com
00029 
00030   For further information regarding this notice, see:
00031 
00032   http://oss.sgi.com/projects/GenInfo/NoticeExplan
00033 
00034 */
00035 
00036 
00037 #pragma ident "@(#) libf/pxf/pxftcgetpgrp.c 92.2  06/29/99 11:36:06"
00038 
00039 /*
00040  *  PXFTCGETPGRP  -- Get Foreground Process Group Id.
00041  *             (section 7.2.3 of Posix 1003.9-1992)
00042  *
00043  *  Synopsis:
00044  *
00045  *     SUBROUTINE PXFTCGETPGRP(ifildes, ipgid, ierror)
00046  *     INTEGER ifildes, ipgid, ierror
00047  *
00048  *  Description:
00049  *
00050  *  PXFTCGETPGRP uses the pxftcgetpgrp system call to return the
00051  *  value of the foreground process group.
00052  *
00053  *  The arguments are:
00054  *
00055  *      ifildes  - default integer input variable containing a file
00056  *                 descriptor.
00057  *      ipgid    - default output integer variable specifying the
00058  *                 foreground process group ID of the terminal
00059  *                 specified by ifildes.
00060  *      ierror   - default integer output variable that contains zero
00061  *                 if the operation was successful or nonzero if the
00062  *                 operation was not successful.
00063  *
00064  *   PXFTCGETPGRP may return one of the following error values:
00065  *
00066  *   EBADF      - ifildes is not a valid file descriptor.
00067  *
00068  *   ENOTTY     - the file associated with ifildes is not a terminal.
00069  *
00070  */
00071 
00072 #include <errno.h>
00073 #include <fortran.h>
00074 #include <liberrno.h>
00075 #include <stdlib.h>
00076 #include <string.h>
00077 #include <termios.h>
00078 #include <sys/errno.h>
00079 #include <sys/types.h>
00080 #include <unistd.h>
00081 
00082 #ifdef _UNICOS
00083 void
00084 PXFTCGETPGRP(
00085 #else /* _UNICOS */
00086 void
00087 pxftcgetpgrp_(
00088 #endif  /* _UNICOS */
00089   _f_int  *ifildes,
00090   _f_int  *ipgid,
00091   _f_int  *ierror)
00092 {
00093   int fildes;
00094   int stat;
00095   fildes  = *ifildes;
00096   *ierror = 0;
00097   if (stat = tcgetpgrp(fildes) == -1)
00098     *ierror = errno;
00099   else
00100     *ipgid  = (_f_int)stat;
00101   return;
00102 }