1 /* winsize.c - handle window size changes and information. */
3 /* Copyright (C) 2005 Free Software Foundation, Inc.
5 This file is part of GNU Bash, the Bourne Again SHell.
7 Bash is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 Bash is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Bash. If not, see <http://www.gnu.org/licenses/>.
25 #include "bashtypes.h"
27 #if defined (HAVE_UNISTD_H)
31 #include <sys/ioctl.h>
33 #if !defined (STRUCT_WINSIZE_IN_SYS_IOCTL)
34 /* For struct winsize on SCO */
35 /* sys/ptem.h has winsize but needs mblk_t from sys/stream.h */
36 # if defined (HAVE_SYS_PTEM_H) && defined (TIOCGWINSZ) && defined (SIGWINCH)
37 # if defined (HAVE_SYS_STREAM_H)
38 # include <sys/stream.h>
40 # include <sys/ptem.h>
41 # endif /* HAVE_SYS_PTEM_H && TIOCGWINSZ && SIGWINCH */
42 #endif /* !STRUCT_WINSIZE_IN_SYS_IOCTL */
46 /* Return the fd from which we are actually getting input. */
47 #define input_tty() (shell_tty != -1) ? shell_tty : fileno (stderr)
55 #if defined (READLINE)
56 extern void rl_set_screen_size __P((int, int));
58 extern void sh_set_lines_and_columns __P((int, int));
61 get_new_window_size (from_sig, rp, cp)
65 #if defined (TIOCGWINSZ)
70 if (tty >= 0 && (ioctl (tty, TIOCGWINSZ, &win) == 0) &&
71 win.ws_row > 0 && win.ws_col > 0)
73 sh_set_lines_and_columns (win.ws_row, win.ws_col);
74 #if defined (READLINE)
75 rl_set_screen_size (win.ws_row, win.ws_col);