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Add tcsetattr and tcgetattr

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4355 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-02-01 16:17:12 +00:00
parent 9473d2192f
commit e154165067
13 changed files with 368 additions and 58 deletions
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3
ChangeLog
View file

@ -2422,3 +2422,6 @@
When drivers are closed, they may need to do things that require a fully
up-and-running task. Some things cannot be done later when the task is
crippled.
* lib/dirent: Moved readdir_r() and telldir() from lib/misc to this new
directory where they belong.
* lib/termios. Implemented tcsetattr() and tcgetattr().

6
fs/fs_unregisterdriver.c
View file

@ -1,8 +1,8 @@
/****************************************************************************
* fs/fs_unregisterdriver.c
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -71,7 +71,7 @@
* Name: unregister_driver()
****************************************************************************/
int unregister_driver(const char *path)
int unregister_driver(FAR const char *path)
{
int ret;
inode_semtake();

9
include/cxx/cstdlib
View file

@ -1,8 +1,8 @@
//***************************************************************************
// include/cxx/cstdlib
//
// Copyright (C) 2009 Gregory Nutt. All rights reserved.
// Author: Gregory Nutt <spudmonkey@racsa.co.cr>
// Copyright (C) 2009, 2012 Gregory Nutt. All rights reserved.
// Author: Gregory Nutt <gnutt@nuttx.org>
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
@ -62,7 +62,12 @@ namespace std
using ::exit;
using ::abort;
#ifdef CONFIG_SCHED_ATEXIT
using ::atexit;
#endif
#ifdef CONFIG_SCHED_ONEXIT
using ::on_exit;
#endif
using ::strtol;
using ::strtod;

62
include/nuttx/tioctl.h
View file

@ -1,8 +1,8 @@
/********************************************************************************************
* include/nuttx/tioctl.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -49,26 +49,26 @@
* Pre-Processor Definitions
********************************************************************************************/
/* Get and Set Terminal Attributes */
/* Get and Set Terminal Attributes */
#define TCGETS _TIOC(0x0001) /* Get serial port settings: FAR struct termios* */
#define TCSETS _TIOC(0x0002) /* Set serial port settings: FAR const struct termios* */
#define TCSETSW _TIOC(0x0003) /* Drain output and set serial port settings: FAR const struct termios* */
#define TCSETSF _TIOC(0x0004) /* Drain output, discard intput, and set serial port settings: FAR const struct termios* */
#define TCGETA _TIOC(0x0005) /* See TCGETS: FAR struct termio* */
#define TCSETA _TIOC(0x0006) /* See TCSETS: FAR const struct termio* */
#define TCSETAW _TIOC(0x0007) /* See TCSETSF: FAR const struct termio* */
#define TCSETAF _TIOC(0x0008) /* See TCSETSF: FAR const struct termio* */
#define TCGETS _TIOC(0x0001) /* Get serial port settings: FAR struct termios */
#define TCSETS _TIOC(0x0002) /* Set serial port settings: FAR const struct termios */
#define TCSETSW _TIOC(0x0003) /* Drain output and set serial port settings: FAR const struct termios */
#define TCSETSF _TIOC(0x0004) /* Drain output, discard intput, and set serial port settings: FAR const struct termios */
#define TCGETA _TIOC(0x0005) /* See TCGETS: FAR struct termio */
#define TCSETA _TIOC(0x0006) /* See TCSETS: FAR const struct termio */
#define TCSETAW _TIOC(0x0007) /* See TCSETSF: FAR const struct termio */
#define TCSETAF _TIOC(0x0008) /* See TCSETSF: FAR const struct termio */
/* Locking the termios structure */
#define TIOCGLCKTRMIOS _TIOC(0x0009) /* Get termios lock status: struct termios* */
#define TIOCSLCKTRMIOS _TIOC(0x000a) /* Set termios lock status: const struct termios* */
#define TIOCGLCKTRMIOS _TIOC(0x0009) /* Get termios lock status: struct termios */
#define TIOCSLCKTRMIOS _TIOC(0x000a) /* Set termios lock status: const struct termios */
/* Get and Set Window Size */
#define TIOCGWINSZ _TIOC(0x000b) /* Get window size: FAR struct winsize* */
#define TIOCSWINSZ _TIOC(0x000c) /* Set window size: FAR const struct winsize* */
#define TIOCGWINSZ _TIOC(0x000b) /* Get window size: FAR struct winsize */
#define TIOCSWINSZ _TIOC(0x000c) /* Set window size: FAR const struct winsize */
/* Send a break */
@ -83,13 +83,13 @@
/* Buffer count and flushing */
#define TIOCINQ _TIOC(0x0012) /* Bytes in input buffer: int* */
#define TIOCOUTQ _TIOC(0x0013) /* Bytes in output buffer: int* */
#define TIOCINQ _TIOC(0x0012) /* Bytes in input buffer: int */
#define TIOCOUTQ _TIOC(0x0013) /* Bytes in output buffer: int */
#define TCFLSH _TIOC(0x0014) /* Flush: int */
/* Faking input */
#define TIOCSTI _TIOC(0x0015) /* Insert into input: const char* */
#define TIOCSTI _TIOC(0x0015) /* Insert into input: const char */
/* Re-directing console output */
@ -107,12 +107,12 @@
/* Line discipline */
#define TIOCGETD _TIOC(0x001b) /* Get line discipline: FAR int* */
#define TIOCSETD _TIOC(0x001c) /* Set line discipline: FAR const int* */
#define TIOCGETD _TIOC(0x001b) /* Get line discipline: FAR int */
#define TIOCSETD _TIOC(0x001c) /* Set line discipline: FAR const int */
/* Packet mode */
#define TIOCPKT _TIOC(0x001d) /* Control packet mode: FAR const int* */
#define TIOCPKT _TIOC(0x001d) /* Control packet mode: FAR const int */
# define TIOCPKT_FLUSHREAD (1 << 0) /* The read queue for the terminal is flushed */
# define TIOCPKT_FLUSHWRITE (1 << 1) /* The write queue for the terminal is flushed */
@ -123,10 +123,10 @@
/* Modem control */
#define TIOCMGET _TIOC(0x001e) /* Get modem status bits: FAR int* */
#define TIOCMSET _TIOC(0x001f) /* Set modem status bits: FAR const int* */
#define TIOCMBIC _TIOC(0x0020) /* Clear modem bits: FAR const int* */
#define TIOCMBIS _TIOC(0x0021) /* Set modem bits: FAR const int* */
#define TIOCMGET _TIOC(0x001e) /* Get modem status bits: FAR int */
#define TIOCMSET _TIOC(0x001f) /* Set modem status bits: FAR const int */
#define TIOCMBIC _TIOC(0x0020) /* Clear modem bits: FAR const int */
#define TIOCMBIS _TIOC(0x0021) /* Set modem bits: FAR const int */
# define TIOCM_LE (1 << 0) /* DSR (data set ready/line enable) */
# define TIOCM_DTR (1 << 1) /* DTR (data terminal ready) */
@ -146,19 +146,19 @@
/* Marking a line as local */
#define TIOCGSOFTCAR _TIOC(0x0023) /* Get software carrier flag: FAR int* */
#define TIOCSSOFTCAR _TIOC(0x0024) /* Set software carrier flag: FAR const int* */
#define TIOCGSOFTCAR _TIOC(0x0023) /* Get software carrier flag: FAR int */
#define TIOCSSOFTCAR _TIOC(0x0024) /* Set software carrier flag: FAR const int */
/* Get/set serial line info */
#define TIOCGSERIAL _TIOC(0x0025) /* Get serial line info: FAR struct serial_struct* */
#define TIOCSSERIAL _TIOC(0x0026) /* Set serial line info: FAR const struct serial_struct* */
#define TIOCSERGETLSR _TIOC(0x0027) /* Get line status register: FAR int* */
#define TIOCGSERIAL _TIOC(0x0025) /* Get serial line info: FAR struct serial_struct */
#define TIOCSSERIAL _TIOC(0x0026) /* Set serial line info: FAR const struct serial_struct */
#define TIOCSERGETLSR _TIOC(0x0027) /* Get line status register: FAR int */
/* Serial events */
#define TIOCMIWAIT _TIOC(0x0028) /* Wait for a change on serial input line(s): void */
#define TIOCGICOUNT _TIOC(0x0029) /* Read serial port interrupt count: FAR struct serial_icounter_struct* */
#define TIOCGICOUNT _TIOC(0x0029) /* Read serial port interrupt count: FAR struct serial_icounter_struct */
/* Debugging */

16
include/termios.h
View file

@ -1,8 +1,8 @@
/****************************************************************************
* include/termios.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -216,17 +216,17 @@ extern "C" {
#define EXTERN extern
#endif
EXTERN speed_t cfgetispeed(const struct termios *);
EXTERN speed_t cfgetospeed(const struct termios *);
EXTERN int cfsetispeed(struct termios *, speed_t);
EXTERN int cfsetospeed(struct termios *, speed_t);
EXTERN speed_t cfgetispeed(FAR const struct termios *);
EXTERN speed_t cfgetospeed(FAR const struct termios *);
EXTERN int cfsetispeed(FAR struct termios *, speed_t);
EXTERN int cfsetospeed(FAR struct termios *, speed_t);
EXTERN int tcdrain(int);
EXTERN int tcflow(int, int);
EXTERN int tcflush(int, int);
EXTERN int tcgetattr(int, struct termios *);
EXTERN int tcgetattr(int, FAR struct termios *);
EXTERN pid_t tcgetsid(int);
EXTERN int tcsendbreak(int, int);
EXTERN int tcsetattr(int, int, struct termios *);
EXTERN int tcsetattr(int, int, FAR const struct termios *);
#undef EXTERN
#ifdef __cplusplus

16
lib/Makefile
View file

@ -1,8 +1,8 @@
############################################################################
# lib/Makefile
#
# Copyright (C) 2007-2011 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
# Copyright (C) 2007-2012 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
@ -47,6 +47,8 @@ include math/Make.defs
include net/Make.defs
include time/Make.defs
include libgen/Make.defs
include dirent/Make.defs
include termios/Make.defs
include queue/Make.defs
include misc/Make.defs
@ -56,6 +58,7 @@ AOBJS = $(ASRCS:.S=$(OBJEXT))
CSRCS = $(STDIO_SRCS) $(STDLIB_SRCS) $(UNISTD_SRCS) $(SCHED_SRCS) \
$(STRING_SRCS) $(PTHREAD_SRCS) $(SEM_SRCS) $(SIG_SRCS) $(MQUEUE_SRCS) \
$(MATH_SRCS) $(NET_SRCS) $(TIME_SRCS) $(LIBGEN_SRCS) \
$(DIRENT_SRCS) $(TERMIOS_SRCS) \
$(QUEUE_SRCS) $(MISC_SRCS) $(REGEX_SRCS) $(CRC_SRCS) $(DBG_SRCS)
COBJS = $(CSRCS:.c=$(OBJEXT))
@ -76,9 +79,13 @@ MATHDEPPATH = --dep-path math
NETDEPPATH = --dep-path net
TIMEDEPPATH = --dep-path time
LIBGENDEPPATH = --dep-path libgen
DIRENTDEPPATH = --dep-path dirent
TERMIOSDEPPATH = --dep-path termios
QUEUEDEPPATH = --dep-path queue
MISCDEPPATH = --dep-path misc
VPATH = stdio:stdlib:unistd:sched:string:pthread:semaphore:signal:mqueue:math:net:time:libgen:queue:misc
VPATH = stdio:stdlib:unistd:sched:string:pthread:semaphore:signal:mqueue
VPATH += :math:net:time:libgen:dirent:termios:queue:misc
UBIN = libulib$(LIBEXT)
KBIN = libklib$(LIBEXT)
@ -117,7 +124,8 @@ endif
@$(MKDEP) $(ROOTDEPPATH) $(STDIODEPPATH) $(STDLIBDEPPATH) \
$(UNISTDDEPPATH) $(SCHEDDEPPATH) $(STRINGDEPPATH) $(PTHREADDEPPATH) \
$(SEMDEPPATH) $(SIGDEPPATH) $(MQDEPPATH) $(MATHDEPPATH) $(NETDEPPATH) \
$(TIMEDEPPATH) $(LIBGENDEPPATH) $(QUEUEDEPPATH) $(MISCDEPPATH) \
$(TIMEDEPPATH) $(LIBGENDEPPATH) $(DIRENTDEPPATH) $(TERMIOSDEPPATH) \
$(QUEUEDEPPATH) $(MISCDEPPATH) \
$(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
@touch $@

40
lib/dirent/Make.defs Normal file
View file

@ -0,0 +1,40 @@
############################################################################
# lib/dirent/Make.defs
#
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# 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.
#
############################################################################
DIRENT_SRCS =
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
DIRENT_SRCS += lib_readdirr.c lib_telldir.c
endif

6
lib/misc/lib_readdirr.c → lib/dirent/lib_readdirr.c
View file

@ -1,8 +1,8 @@
/****************************************************************************
* lib/misc/lib_readdirr.c
* lib/dirent/lib_readdirr.c
*
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions

8
lib/misc/lib_telldir.c → lib/dirent/lib_telldir.c
View file

@ -1,8 +1,8 @@
/****************************************************************************
* fs/fs_telldir.c
* lib/dirent/fs_telldir.c
*
* Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2007-2008, 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -80,7 +80,7 @@ off_t telldir(FAR DIR *dirp)
if (!idir || !idir->fd_root)
{
*get_errno_ptr() = EBADF;
set_errno(EBADF);
return (off_t)-1;
}

5
lib/misc/Make.defs
View file

@ -1,8 +1,8 @@
############################################################################
# lib/misc/Make.defs
#
# Copyright (C) 2011 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
# Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
@ -36,7 +36,6 @@
MISC_SRCS = lib_init.c lib_filesem.c
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
MISC_SRCS += lib_readdirr.c lib_telldir.c
ifneq ($(CONFIG_NFILE_STREAMS),0)
MISC_SRCS += lib_streamsem.c
endif

40
lib/termios/Make.defs Normal file
View file

@ -0,0 +1,40 @@
############################################################################
# lib/misc/Make.defs
#
# Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# 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.
#
############################################################################
TERMIOS_SRCS =
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
TERMIOS_SRCS += lib_tcgetattr.c lib_tcsetattr.c
endif

93
lib/termios/lib_tcgetattr.c Normal file
View file

@ -0,0 +1,93 @@
/****************************************************************************
* lib/termios/lib_tcgetattr.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <nuttx/config.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <errno.h>
#include <nuttx/tioctl.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: tcgetattr
*
* Descripton:
* The tcgetattr() function gets the parameters associated with the
* terminal referred to by 'fd' and stores them in the termios structure
* referenced by 'termiosp'.
*
* Input Parameters:
* fd - The 'fd' argument is an open file descriptor associated with a terminal.
* termiosp - The termiosp argument is a pointer to a termios structure.
*
* Returned Value:
* Upon successful completion, 0 is returned. Otherwise, -1 is returned and
* errno is set to indicate the error. The following errors may be reported:
*
* - EBADF: The 'fd' argument is not a valid file descriptor.
* - ENOTTY: The file associated with 'fd' is not a terminal.
*
****************************************************************************/
int tcgetattr(int fd, FAR struct termios *termiosp)
{
return ioctl(fd, TCGETS, (unsigned long)termiosp);
}

122
lib/termios/lib_tcsetattr.c Normal file
View file

@ -0,0 +1,122 @@
/****************************************************************************
* lib/termios/lib_tcsetattr.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <nuttx/config.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <errno.h>
#include <nuttx/tioctl.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: tcsetattr
*
* Descripton:
* The tcsetattr() function sets the parameters associated with the
* terminal referred to by the open file descriptor 'fd' from the termios
* structure referenced by 'termiop' as follows:
*
* If 'options' is TCSANOW, the change will occur immediately.
*
* If 'options' is TCSADRAIN, the change will occur after all output
* written to 'fd' is transmitted. This function should be used when changing
* parameters that affect output.
*
* If 'options' is TCSAFLUSH, the change will occur after all
* output written to 'fd' is transmitted, and all input so far received but
* not read will be discarded before the change is made.
*
* The tcsetattr() function will return successfully if it was able to
* perform any of the requested actions, even if some of the requested
* actions could not be performed. It will set all the attributes that
* implementation supports as requested and leave all the attributes not
* supported by the implementation unchanged. If no part of the request
* can be honoured, it will return -1 and set errno to EINVAL.
*
* The effect of tcsetattr() is undefined if the value of the termios
* structure pointed to by 'termiop' was not derived from the result of
* a call to tcgetattr() on 'fd'; an application should modify only fields
* and flags defined by this specification between the call to tcgetattr()
* and tcsetattr(), leaving all other fields and flags unmodified.
*
* Returned Value:
*
* Upon successful completion, 0 is returned. Otherwise, -1 is returned
* and errno is set to indicate the error. The following errors may be
* reported:
*
* - EBADF: The 'fd' argument is not a valid file descriptor.
* - EINTR: A signal interrupted tcsetattr().
* - EINVAL: The 'options' argument is not a supported value, or
* an attempt was made to change an attribute represented in the
* termios structure to an unsupported value.
* - ENOTTY: The file associated with 'fd' is not a terminal.
*
****************************************************************************/
int tcsetattr(int fd, int options, FAR const struct termios *termiosp)
{
if (options == TCSANOW)
{
return ioctl(fd, TCSETS, (unsigned long)termiosp);
}
return -ENOSYS;
}