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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 20:22:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 20:22:03 +0000
commitffccd5b2b05243e7976db80f90f453dccfae9886 (patch)
tree39a43152d27f7390d8f7a6fb276fa6887f87c6e8 /lib/tty/tty-internal.c
parentInitial commit. (diff)
downloadmc-ffccd5b2b05243e7976db80f90f453dccfae9886.tar.xz
mc-ffccd5b2b05243e7976db80f90f453dccfae9886.zip
Adding upstream version 3:4.8.30.upstream/3%4.8.30
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/tty/tty-internal.c')
-rw-r--r--lib/tty/tty-internal.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/lib/tty/tty-internal.c b/lib/tty/tty-internal.c
new file mode 100644
index 0000000..c79301d
--- /dev/null
+++ b/lib/tty/tty-internal.c
@@ -0,0 +1,110 @@
+/*
+ Internal stuff of the terminal controlling library.
+
+ Copyright (C) 2019-2023
+ 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]);
+}
+
+/* --------------------------------------------------------------------------------------------- */