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2f1caa28c0
Split the function tty_open() to a separate file. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
43 lines
781 B
C
43 lines
781 B
C
/*
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* Copyright (c) 2016-2018, Linaro Ltd.
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <fcntl.h>
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#include <termios.h>
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#include <unistd.h>
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#include <err.h>
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#include <string.h>
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#include "tty.h"
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int tty_open(const char *tty, struct termios *old)
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{
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struct termios tios;
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int ret;
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int fd;
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fd = open(tty, O_RDWR | O_NOCTTY | O_EXCL);
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if (fd < 0)
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err(1, "unable to open \"%s\"", tty);
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ret = tcgetattr(fd, old);
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if (ret < 0)
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err(1, "unable to retrieve \"%s\" tios", tty);
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memset(&tios, 0, sizeof(tios));
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tios.c_cflag = B115200 | CS8 | CLOCAL | CREAD;
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tios.c_iflag = IGNPAR;
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tios.c_oflag = 0;
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tcflush(fd, TCIFLUSH);
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ret = tcsetattr(fd, TCSANOW, &tios);
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if (ret < 0)
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err(1, "unable to update \"%s\" tios", tty);
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return fd;
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}
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