open.c (1466B)
1 /* -*-comment-start: "//";comment-end:""-*- 2 * GNU Mes --- Maxwell Equations of Software 3 * Copyright © 2016,2017,2018,2019,2022 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 <fcntl.h> 23 #include <stdarg.h> 24 25 int 26 _open2 (char const *file_name, int flags) 27 { 28 int mask = 0777; 29 return _open3 (file_name, flags, mask); 30 } 31 32 #if __M2__ 33 int 34 open (char const *file_name, int flags, int mask) 35 { 36 return _open3 (file_name, flags, mask); 37 } 38 #else // !__M2__ 39 int 40 open (char const *file_name, int flags, ...) 41 { 42 if (flags & O_CREAT) 43 { 44 va_list ap; 45 va_start (ap, flags); 46 int mask = va_arg (ap, int); 47 int r = _open3 (file_name, flags, mask); 48 va_end (ap); 49 return r; 50 } 51 else 52 return _open2 (file_name, flags); 53 } 54 #endif // !__M2__