1 files changed, 46 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/tcdrain.c b/nptl/sysdeps/unix/sysv/linux/tcdrain.c
new file mode 100644
index 0000000000..df0c969d11
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/tcdrain.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1995, 1996, 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 <termios.h>
+#include <sys/ioctl.h>
+#include <nptl/pthreadP.h>
+#include <tls.h>
+
+/* Wait for pending output to be written on FD.  */
+int
+__libc_tcdrain (int fd)
+{
+#ifndef NOT_IN_libc
+  if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
+				       header.data.multiple_threads) == 0, 1))
+    /* With an argument of 1, TCSBRK for output to be drain.  */
+    return __ioctl (fd, TCSBRK, 1);
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+#endif
+
+  /* With an argument of 1, TCSBRK for output to be drain.  */
+  int result = __ioctl (fd, TCSBRK, 1);
+
+#ifndef NOT_IN_libc
+  LIBC_CANCEL_RESET (oldtype);
+#endif
+
+  return result;
+}
+weak_alias (__libc_tcdrain, tcdrain)