mes_open.c (1398B)
1 /* -*-comment-start: "//";comment-end:""-*- 2 * GNU Mes --- Maxwell Equations of Software 3 * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> 4 * 5 * This file is part of GNU Mes. 6 * 7 * GNU Mes is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 3 of the License, or (at 10 * your option) any later version. 11 * 12 * GNU Mes is distributed in the hope that it will be useful, but 13 * 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. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with GNU Mes. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #include <mes/lib.h> 22 #include <stdlib.h> 23 24 #if SYSTEM_LIBC 25 #include <fcntl.h> 26 #include <stdarg.h> 27 // The Mes C Library defines and initializes these in crt1 28 int __stdin = STDIN; 29 int __stdout = STDOUT; 30 int __stderr = STDERR; 31 32 int 33 mes_open (char const *file_name, int flags, int mask) 34 { 35 int filedes = open (file_name, flags, mask); 36 if (filedes > 2) 37 __ungetc_clear (filedes); 38 return filedes; 39 } 40 41 #else // !SYSTEM_LIBC 42 43 int 44 mes_open (char const *file_name, int flags, int mask) 45 { 46 return _open3 (file_name, flags, mask); 47 } 48 49 #endif // !SYSTEM_LIBC