From 26fbe7f1e68bb0c96da32491efcf3696fe6c299b Mon Sep 17 00:00:00 2001 From: Holger Weiss Date: Mon, 19 Aug 2013 23:27:12 +0200 Subject: Sync with the latest Gnulib code (6f2d632) --- gl/cloexec.c | 83 ------------------------------------------------------------ 1 file changed, 83 deletions(-) delete mode 100644 gl/cloexec.c (limited to 'gl/cloexec.c') diff --git a/gl/cloexec.c b/gl/cloexec.c deleted file mode 100644 index 2d12efef..00000000 --- a/gl/cloexec.c +++ /dev/null @@ -1,83 +0,0 @@ -/* closexec.c - set or clear the close-on-exec descriptor flag - - Copyright (C) 1991, 2004-2006, 2009-2010 Free Software Foundation, Inc. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . - - The code is taken from glibc/manual/llio.texi */ - -#include - -#include "cloexec.h" - -#include -#include -#include - -/* 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) -{ -#ifdef F_SETFD - - int flags = fcntl (desc, F_GETFD, 0); - - if (0 <= flags) - { - int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC); - - if (flags == newflags - || fcntl (desc, F_SETFD, newflags) != -1) - return 0; - } - - return -1; - -#else /* !F_SETFD */ - - /* Use dup2 to reject invalid file descriptors; the cloexec flag - will be unaffected. */ - if (desc < 0) - { - errno = EBADF; - return -1; - } - if (dup2 (desc, desc) < 0) - /* errno is EBADF here. */ - return -1; - - /* There is nothing we can do on this kind of platform. Punt. */ - return 0; -#endif /* !F_SETFD */ -} - - -/* 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) -{ - return fcntl (fd, F_DUPFD_CLOEXEC, 0); -} -- cgit v1.2.3-74-g34f1