1 /* Binary mode I/O. 2 Copyright 2017-2018 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 #include <config.h> 18 19 #define BINARY_IO_INLINE _GL_EXTERN_INLINE 20 #include "binary-io.h" 21 22 #if defined __DJGPP__ || defined __EMX__ 23 # include <errno.h> 24 # include <unistd.h> 25 26 int 27 __gl_setmode_check (int fd) 28 { 29 if (isatty (fd)) 30 { 31 errno = EINVAL; 32 return -1; 33 } 34 else 35 return 0; 36 } 37 #endif 38