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authorJeff Johnston <jjohnstn@redhat.com>2002-05-29 02:26:36 +0400
committerJeff Johnston <jjohnstn@redhat.com>2002-05-29 02:26:36 +0400
commitb1f07180b5e7897f07e390e020b307e6496c9cb1 (patch)
treea2214ac6ac09c310f7fbd8c42a48f5cc58b2e4f1 /newlib/libc/sys/linux/tcsendbrk.c
parentab72c934da3502f2dcb0f52199675a0d939c039c (diff)
2002-05-28 Jeff Johnston <jjohnstn@redhat.com>
* libc/sys/linux/Makefile.am: Add support for cfspeed.c and tcsendbrk.c. * libc/sys/linux/Makefile.in: Regenerated. * libc/sys/linux/termios.c: Add tcflow(), tcflush(), tcgetpgrp(), and tcsetpgrp() functions. * libc/sys/linux/sys/termios.h: Add include of machine/termios.h to get __MAX_BAUD rate. * libc/sys/linux/machine/i386/include/termios.h: New file. * libc/include/machine/termios.h: Ditto. * libc/sys/linux/cfspeed.c: Ditto. * libc/sys/linux/tcsendbrk.c: Ditto.
Diffstat (limited to 'newlib/libc/sys/linux/tcsendbrk.c')
-rw-r--r--newlib/libc/sys/linux/tcsendbrk.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/tcsendbrk.c b/newlib/libc/sys/linux/tcsendbrk.c
new file mode 100644
index 000000000..a35a4d8ce
--- /dev/null
+++ b/newlib/libc/sys/linux/tcsendbrk.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1992, 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. */
+
+/* Modified for newlib, May 27, 2002, by Jeff Johnston */
+
+#include <errno.h>
+#include <stddef.h>
+#include <signal.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+
+/* Send zero bits on FD. */
+int
+tcsendbreak (fd, duration)
+ 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);
+
+ /* 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. */
+ errno = (EINVAL);
+ return -1;
+}