diff options
author | Gregory Nutt <gnutt@nuttx.org> | 2014-10-27 12:29:15 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2014-10-27 12:29:15 -0600 |
commit | 23b9f7ca8d73901454e9327dc3e31560bddf83d2 (patch) | |
tree | 3d70160ca8e2a728ef0f8ab40d8797c4a2e752bb /nuttx/libc/termios | |
parent | 4660aa951272906abf2c6277ebe125dadebd321e (diff) | |
download | px4-nuttx-23b9f7ca8d73901454e9327dc3e31560bddf83d2.tar.gz px4-nuttx-23b9f7ca8d73901454e9327dc3e31560bddf83d2.tar.bz2 px4-nuttx-23b9f7ca8d73901454e9327dc3e31560bddf83d2.zip |
Add isatty() function. From Alan Carvalho de Assis
Diffstat (limited to 'nuttx/libc/termios')
-rw-r--r-- | nuttx/libc/termios/Make.defs | 4 | ||||
-rw-r--r-- | nuttx/libc/termios/lib_isatty.c | 71 |
2 files changed, 73 insertions, 2 deletions
diff --git a/nuttx/libc/termios/Make.defs b/nuttx/libc/termios/Make.defs index d20a5f95c..e5a913d6e 100644 --- a/nuttx/libc/termios/Make.defs +++ b/nuttx/libc/termios/Make.defs @@ -1,7 +1,7 @@ ############################################################################ # libc/misc/Make.defs # -# Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. +# Copyright (C) 2011-2012, 2014 Gregory Nutt. All rights reserved. # Author: Gregory Nutt <gnutt@nuttx.org> # # Redistribution and use in source and binary forms, with or without @@ -41,7 +41,7 @@ ifeq ($(CONFIG_SERIAL_TERMIOS),y) # Add the termios C files to the build -CSRCS += lib_cfgetspeed.c lib_cfsetspeed.c lib_tcflush.c +CSRCS += lib_cfgetspeed.c lib_cfsetspeed.c lib_isatty.c lib_tcflush.c CSRCS += lib_tcgetattr.c lib_tcsetattr.c # Add the termios directory to the build diff --git a/nuttx/libc/termios/lib_isatty.c b/nuttx/libc/termios/lib_isatty.c new file mode 100644 index 000000000..6f0ec589f --- /dev/null +++ b/nuttx/libc/termios/lib_isatty.c @@ -0,0 +1,71 @@ +/**************************************************************************** + * libc/termios/lib_tcflush.c + * + * Copyright (C) 2014 Gregory Nutt. All rights reserved. + * Author: Alan Carvalho de Assis + * + * Source: + * https://github.com/raggi/apue.2e/blob/master/termios/isatty.c + * based on Advanced Programming in the UNIX Environment + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <termios.h> + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: isatty + * + * Description: + * Return a non-zero (true) value if the file descriptor, fd, corresponds + * to a TTYY. + * + * NOTE: Nuttx, of course, does not have true TTYs in the sense that this + * function is intended. In this implementation, the function simply + * returns true if the file descriptor is associated with a driver that + * responds wo tcgetattr() without an error -- that it, the driver supports + * the NuttX TCGETS ioctl command. + * + * Of course, that can only be true if CONFIG_SERIAL_TERMIOS=y. + * + ****************************************************************************/ + +int isatty(int fd) +{ + struct termios ts; + return (tcgetattr(fd, &ts) >= 0); +} |