1 /* closexec.c - set or clear the close-on-exec descriptor flag
2 Copyright (C) 1991, 2004 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program 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
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 The code is taken from glibc/manual/llio.texi */
36 /* Set the `FD_CLOEXEC' flag of DESC if VALUE is true,
37 or clear the flag if VALUE is false.
38 Return 0 on success, or -1 on error with `errno' set. */
41 set_cloexec_flag (int desc, bool value)
43 #if defined F_GETFD && defined F_SETFD
45 int flags = fcntl (desc, F_GETFD, 0);
49 int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC);
52 || fcntl (desc, F_SETFD, newflags) != -1)