| /* cloexec.c - set or clear the close-on-exec descriptor flag | |
| Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc. | |
| This file is free software: you can redistribute it and/or modify | |
| it under the terms of the GNU Lesser General Public License as | |
| published by the Free Software Foundation; either version 2.1 of the | |
| License, or (at your option) any later version. | |
| This file is distributed in the hope that it will be useful, | |
| but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| GNU Lesser General Public License for more details. | |
| You should have received a copy of the GNU Lesser General Public License | |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ | |
| /* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true, | |
| or clear the flag if VALUE is false. | |
| Return 0 on success, or -1 on error with 'errno' set. | |
| Note that on MingW, this function does NOT protect DESC from being | |
| inherited into spawned children. Instead, either use dup_cloexec | |
| followed by closing the original DESC, or use interfaces such as | |
| open or pipe2 that accept flags like O_CLOEXEC to create DESC | |
| non-inheritable in the first place. */ | |
| int set_cloexec_flag (int desc, bool value); | |
| /* Duplicates a file handle FD, while marking the copy to be closed | |
| prior to exec or spawn. Returns -1 and sets errno if FD could not | |
| be duplicated. */ | |
| int dup_cloexec (int fd); | |