1 /* Copyright (C) 2000-2021 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library 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 GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <stdio_ext.h> 19 20 #undef __fsetlocking 21 22 int __fsetlocking(FILE * fp,int type)23__fsetlocking (FILE *fp, int type) 24 { 25 int result = ((fp->_flags & _IO_USER_LOCK) 26 ? FSETLOCKING_BYCALLER : FSETLOCKING_INTERNAL); 27 28 if (type != FSETLOCKING_QUERY) 29 { 30 fp->_flags &= ~_IO_USER_LOCK; 31 if (type == FSETLOCKING_BYCALLER) 32 fp->_flags |= _IO_USER_LOCK; 33 } 34 35 return result; 36 } 37 libc_hidden_def (__fsetlocking) 38