Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 44 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/tcsendbrk.c b/REORG.TODO/sysdeps/unix/sysv/linux/tcsendbrk.c
new file mode 100644
index 0000000000..3197020c97
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/tcsendbrk.c
@@ -0,0 +1,44 @@
+/* Send break to terminal.
+   Copyright (C) 1996-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+
+/* Send zero bits on FD.  */
+int
+tcsendbreak (int fd, int duration)
+{
+  /* The break lasts 0.25 to 0.5 seconds if DURATION is zero,
+     and an implementation-defined period if DURATION is nonzero.
+     We define a positive DURATION to be number of milliseconds to break.  */
+  if (duration <= 0)
+    return __ioctl (fd, TCSBRK, 0);
+
+#ifdef TCSBRKP
+  /* Probably Linux-specific: a positive third TCSBRKP ioctl argument is
+     defined to be the number of 100ms units to break.  */
+  return __ioctl (fd, TCSBRKP, (duration + 99) / 100);
+#else
+  /* ioctl can't send a break of any other duration for us.
+     This could be changed to use trickery (e.g. lower speed and
+     send a '\0') to send the break, but for now just return an error.  */
+  return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+#endif
+}