From 7143acae9f38a1c1ba2df09a610d99632fc2348b Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Thu, 26 Apr 2012 18:44:38 +0000 Subject: Move sysdeps/unix/common/tcsendbrk.c to sysdeps/unix/sysv/linux/. --- sysdeps/unix/sysv/linux/tcsendbrk.c | 45 +++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/tcsendbrk.c (limited to 'sysdeps/unix/sysv/linux') diff --git a/sysdeps/unix/sysv/linux/tcsendbrk.c b/sysdeps/unix/sysv/linux/tcsendbrk.c new file mode 100644 index 0000000000..c8fbcbb525 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tcsendbrk.c @@ -0,0 +1,45 @@ +/* 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, see + . */ + +#include +#include +#include +#include + +/* 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 +} -- cgit 1.4.1