1 /****************************************************************************
2 * Copyright 2019,2020 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
28 ****************************************************************************/
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-on *
34 ****************************************************************************/
39 ** The routines initscr(), and termname().
43 #include <curses.priv.h>
46 #include <sys/termio.h> /* needed for ISC */
49 MODULE_ID("$Id: lib_initscr.c,v 1.48 2020/09/07 14:26:48 tom Exp $")
51 NCURSES_EXPORT(WINDOW *)
57 T((T_CALLED("initscr()")));
60 _nc_lock_global(curses);
62 /* Portable applications must not call initscr() more than once */
63 if (!_nc_globals.init_screen) {
67 _nc_globals.init_screen = TRUE;
70 (void) VALID_TERM_ENV(env, "unknown");
72 if ((name = strdup(env)) == NULL) {
73 fprintf(stderr, "Error opening allocating $TERM.\n");
74 ExitProgram(EXIT_FAILURE);
79 * Work around a bug in Cygwin. Full-screen subprocesses run from
80 * bash, in turn spawned from another full-screen process, will dump
81 * core when attempting to write to stdout. Opening /dev/tty
82 * explicitly seems to fix the problem.
84 if (NC_ISATTY(fileno(stdout))) {
85 FILE *fp = fopen("/dev/tty", "w");
86 if (fp != 0 && NC_ISATTY(fileno(fp))) {
88 dup2(fileno(fp), STDOUT_FILENO);
89 stdout = fdopen(STDOUT_FILENO, "w");
93 if (newterm(name, stdout, stdin) == 0) {
94 fprintf(stderr, "Error opening terminal: %s.\n", name);
95 ExitProgram(EXIT_FAILURE);
98 /* def_shell_mode - done in newterm/_nc_setupscreen */
100 NCURSES_SP_NAME(def_prog_mode) (CURRENT_SCREEN);
107 _nc_unlock_global(curses);