From 8f88e7f6f8ed55effda60b6475d8dbcb247dd9a2 Mon Sep 17 00:00:00 2001 From: Martin Liska Date: Mon, 12 Aug 2019 09:36:48 +0200 Subject: Move is_valid_fd to filedescriptor.c file. 2019-08-12 Martin Liska * Makefile.in: Add filedescriptor.c. * filedescriptor.c: New file. * lrealpath.c (is_valid_fd): Remove. From-SVN: r274273 --- libiberty/filedescriptor.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 libiberty/filedescriptor.c (limited to 'libiberty/filedescriptor.c') diff --git a/libiberty/filedescriptor.c b/libiberty/filedescriptor.c new file mode 100644 index 0000000..3a1a68d --- /dev/null +++ b/libiberty/filedescriptor.c @@ -0,0 +1,47 @@ +/* File descriptor related functions. + + Copyright (C) 2019 Free Software Foundation, Inc. + + This file is part of the libiberty library. + + 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 2 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, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, + Boston, MA 02110-1301, USA. */ + +#include "config.h" +#include "ansidecl.h" +#include "libiberty.h" + +#ifdef HAVE_FCNTL_H +#include +#endif + +#if defined (_WIN32) +#define WIN32_LEAN_AND_MEAN +#include /* for GetFullPathName */ +#endif +/* Return true when FD file descriptor exists. */ + +int +is_valid_fd (int fd) +{ +#if defined(_WIN32) + HANDLE h = (HANDLE) _get_osfhandle (fd); + return h != (HANDLE) -1; +#elif defined(F_GETFD) + return fcntl (fd, F_GETFD) >= 0; +#else + return dup2 (fd, fd) < 0; +#endif +} -- cgit v1.1