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Add BSD header to lib_istty.c

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This commit is contained in:
Gregory Nutt 2014-10-27 10:29:27 -06:00
parent 9020d0cc58
commit 6160a37284
2 changed files with 66 additions and 9 deletions
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4
libc/termios/Make.defs
View File

@ -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

71
libc/termios/lib_isatty.c
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@ -1,14 +1,71 @@
/* Added by Alan Carvalho de Assis
This code is from:
https://github.com/raggi/apue.2e/blob/master/termios/isatty.c
based on Advanced Programming in the UNIX Environment
*/
/****************************************************************************
* 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) != -1); /* true if no error (is a tty) */
return (tcgetattr(fd, &ts) >= 0);
}