1 /* System-specific extensions of <unistd.h>, Hurd version. 2 Copyright (C) 2019-2021 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 _UNISTD_H 20 # error "Never include <bits/unistd_ext.h> directly; use <unistd.h> instead." 21 #endif 22 23 #ifdef __USE_GNU 24 25 /* Set the FD_CLOEXEC bit instead of closing the file descriptor. */ 26 #define CLOSE_RANGE_CLOEXEC (1U << 2) 27 28 #endif /* __USE_GNU */ 29