mirror of https://github.com/MidnightCommander/mc
111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*
|
|
Internal stuff of the terminal controlling library.
|
|
|
|
Copyright (C) 2019-2024
|
|
Free Software Foundation, Inc.
|
|
|
|
Written by:
|
|
Andrew Borodin <aborodin@vmail.ru>, 2019.
|
|
|
|
This file is part of the Midnight Commander.
|
|
|
|
The Midnight Commander is free software: you can redistribute it
|
|
and/or modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation, either version 3 of the License,
|
|
or (at your option) any later version.
|
|
|
|
The Midnight Commander is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** \file
|
|
* \brief Source: internal stuff of the terminal controlling library.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
#include "lib/global.h"
|
|
|
|
#include <glib-unix.h>
|
|
|
|
#include "tty-internal.h"
|
|
|
|
/*** global variables ****************************************************************************/
|
|
|
|
/* pipe to handle SIGWINCH */
|
|
int sigwinch_pipe[2];
|
|
|
|
/*** file scope macro definitions ****************************************************************/
|
|
|
|
/*** global variables ****************************************************************************/
|
|
|
|
/*** file scope type declarations ****************************************************************/
|
|
|
|
/*** file scope variables ************************************************************************/
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/*** file scope functions ************************************************************************/
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
/*** public functions ****************************************************************************/
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
void
|
|
tty_create_winch_pipe (void)
|
|
{
|
|
GError *mcerror = NULL;
|
|
|
|
if (!g_unix_open_pipe (sigwinch_pipe, FD_CLOEXEC, &mcerror))
|
|
{
|
|
fprintf (stderr, _("\nCannot create pipe for SIGWINCH: %s (%d)\n"),
|
|
mcerror->message, mcerror->code);
|
|
g_error_free (mcerror);
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
/* If we read from an empty pipe, then read(2) will block until data is available.
|
|
* If we write to a full pipe, then write(2) blocks until sufficient data has been read
|
|
* from the pipe to allow the write to complete..
|
|
* Therefore, use nonblocking I/O.
|
|
*/
|
|
if (!g_unix_set_fd_nonblocking (sigwinch_pipe[0], TRUE, &mcerror))
|
|
{
|
|
fprintf (stderr, _("\nCannot configure write end of SIGWINCH pipe: %s (%d)\n"),
|
|
mcerror->message, mcerror->code);
|
|
g_error_free (mcerror);
|
|
tty_destroy_winch_pipe ();
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
if (!g_unix_set_fd_nonblocking (sigwinch_pipe[1], TRUE, &mcerror))
|
|
{
|
|
fprintf (stderr, _("\nCannot configure read end of SIGWINCH pipe: %s (%d)\n"),
|
|
mcerror->message, mcerror->code);
|
|
g_error_free (mcerror);
|
|
tty_destroy_winch_pipe ();
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|
|
|
|
void
|
|
tty_destroy_winch_pipe (void)
|
|
{
|
|
(void) close (sigwinch_pipe[0]);
|
|
(void) close (sigwinch_pipe[1]);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------------------------- */
|