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49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* Copyright (C) 1991-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stddef.h>
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#include <termios.h>
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#include <unistd.h>
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#include "bsdtty.h"
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#include <sys/file.h>
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/* Flush pending data on FD. */
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int
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tcflush (int fd, int queue_selector)
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{
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int arg;
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switch (queue_selector)
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{
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case TCIFLUSH:
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arg = FREAD;
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break;
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case TCOFLUSH:
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arg = FWRITE;
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break;
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case TCIOFLUSH:
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arg = FREAD | FWRITE;
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break;
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default:
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__set_errno (EINVAL);
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return -1;
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}
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return __ioctl (fd, TIOCFLUSH, (void *) &arg);
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}
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