1 files changed, 35 insertions, 0 deletions
diff --git a/libc/sysdeps/unix/bsd/tcgetpgrp.c b/libc/sysdeps/unix/bsd/tcgetpgrp.c
new file mode 100644
index 000000000..0ccadef87
--- /dev/null
+++ b/libc/sysdeps/unix/bsd/tcgetpgrp.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1991, 1997, 2002 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* Return the foreground process group ID of FD.  */
+pid_t
+tcgetpgrp (fd)
+     int fd;
+{
+  int pgrp;
+
+  if (__ioctl (fd, TIOCGPGRP, &pgrp) < 0)
+    return (pid_t) -1;
+  return (pid_t) pgrp;
+}
+libc_hidden_def (tcgetpgrp)