1 /* closexec.c - set or clear the close-on-exec descriptor flag
3 Copyright (C) 1991, 2004, 2005, 2006 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 This program 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
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 The code is taken from glibc/manual/llio.texi */
32 /* Set the `FD_CLOEXEC' flag of DESC if VALUE is true,
33 or clear the flag if VALUE is false.
34 Return 0 on success, or -1 on error with `errno' set. */
37 set_cloexec_flag (int desc, bool value)
39 #if defined F_GETFD && defined F_SETFD
41 int flags = fcntl (desc, F_GETFD, 0);
45 int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC);
48 || fcntl (desc, F_SETFD, newflags) != -1)