1 /* Support functions related to (pseudo)terminals. 2 Copyright (C) 2018-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _SUPPORT_TTY_H 20 #define _SUPPORT_TTY_H 1 21 22 struct termios; 23 struct winsize; 24 25 /** Open a pseudoterminal pair. The outer fd is written to the address 26 A_OUTER and the inner fd to A_INNER. 27 28 If A_NAME is not NULL, it will be set to point to a string naming 29 the /dev/pts/NNN device corresponding to the inner fd; space for 30 this string is allocated with malloc and should be freed by the 31 caller when no longer needed. (This is different from the libutil 32 function 'openpty'.) 33 34 If TERMP is not NULL, the terminal parameters will be initialized 35 according to the termios structure it points to. 36 37 If WINP is not NULL, the terminal window size will be set 38 accordingly. 39 40 Terminates the process on failure (like xmalloc). */ 41 extern void support_openpty (int *a_outer, int *a_inner, char **a_name, 42 const struct termios *termp, 43 const struct winsize *winp); 44 45 #endif 46