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Diffstat (limited to 'sysdeps/unix/sysv/tcgetpgrp.c')
-rw-r--r--sysdeps/unix/sysv/tcgetpgrp.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/tcgetpgrp.c b/sysdeps/unix/sysv/tcgetpgrp.c
new file mode 100644
index 0000000000..d4c47227d0
--- /dev/null
+++ b/sysdeps/unix/sysv/tcgetpgrp.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <termios.h>
+#include <sysv_termio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+/* Return the foreground process group ID of FD. */
+pid_t
+DEFUN(tcgetpgrp, (fd), int fd)
+{
+ int pgrp;
+ if (__ioctl(fd, _TIOCGPGRP, &pgrp) < 0)
+ return (pid_t) -1;
+ return (pid_t) pgrp;
+}