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authorPeter S. Mazinger <ps.m@gmx.net>2006-01-14 00:58:03 +0000
committerPeter S. Mazinger <ps.m@gmx.net>2006-01-14 00:58:03 +0000
commitaf0172162f7c653cad6a11ed1c1a5459bc154465 (patch)
tree70031dad1e7286d58762da7b9e3d3f93d043c278 /libc/termios/tcsendbrk.c
parentc8609543a9a8bf6559c2931dbbef6b3c41b3fbf2 (diff)
hidden_def/hidden_proto: convert all users (I hope) termios split, add some missing headers, other jump relocs removed
Diffstat (limited to 'libc/termios/tcsendbrk.c')
-rw-r--r--libc/termios/tcsendbrk.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/libc/termios/tcsendbrk.c b/libc/termios/tcsendbrk.c
new file mode 100644
index 000000000..ae04cb947
--- /dev/null
+++ b/libc/termios/tcsendbrk.c
@@ -0,0 +1,48 @@
+/* Send break to terminal.
+ Copyright (C) 1996, 1997 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 <errno.h>
+#include <stddef.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+
+libc_hidden_proto(ioctl)
+
+/* 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. */
+ __set_errno (EINVAL);
+ return -1;
+#endif
+}