mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-23 12:56:51 +03:00
111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*
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Internal stuff of the terminal controlling library.
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Copyright (C) 2019-2024
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Free Software Foundation, Inc.
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Written by:
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Andrew Borodin <aborodin@vmail.ru>, 2019.
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This file is part of the Midnight Commander.
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The Midnight Commander is free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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The Midnight Commander 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* \brief Source: internal stuff of the terminal controlling library.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "lib/global.h"
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#include <glib-unix.h>
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#include "tty-internal.h"
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/*** global variables ****************************************************************************/
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/* pipe to handle SIGWINCH */
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int sigwinch_pipe[2];
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/*** file scope macro definitions ****************************************************************/
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/*** global variables ****************************************************************************/
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/*** file scope type declarations ****************************************************************/
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/*** file scope variables ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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/*** file scope functions ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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/* --------------------------------------------------------------------------------------------- */
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/*** public functions ****************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_create_winch_pipe (void)
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{
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GError *mcerror = NULL;
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if (!g_unix_open_pipe (sigwinch_pipe, FD_CLOEXEC, &mcerror))
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{
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fprintf (stderr, _("\nCannot create pipe for SIGWINCH: %s (%d)\n"),
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mcerror->message, mcerror->code);
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g_error_free (mcerror);
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exit (EXIT_FAILURE);
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}
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/* If we read from an empty pipe, then read(2) will block until data is available.
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* If we write to a full pipe, then write(2) blocks until sufficient data has been read
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* from the pipe to allow the write to complete..
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* Therefore, use nonblocking I/O.
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*/
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if (!g_unix_set_fd_nonblocking (sigwinch_pipe[0], TRUE, &mcerror))
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{
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fprintf (stderr, _("\nCannot configure write end of SIGWINCH pipe: %s (%d)\n"),
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mcerror->message, mcerror->code);
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g_error_free (mcerror);
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tty_destroy_winch_pipe ();
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exit (EXIT_FAILURE);
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}
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if (!g_unix_set_fd_nonblocking (sigwinch_pipe[1], TRUE, &mcerror))
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{
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fprintf (stderr, _("\nCannot configure read end of SIGWINCH pipe: %s (%d)\n"),
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mcerror->message, mcerror->code);
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g_error_free (mcerror);
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tty_destroy_winch_pipe ();
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exit (EXIT_FAILURE);
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_destroy_winch_pipe (void)
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{
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(void) close (sigwinch_pipe[0]);
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(void) close (sigwinch_pipe[1]);
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}
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/* --------------------------------------------------------------------------------------------- */
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