diff options
author | Martin Liska <mliska@suse.cz> | 2019-08-12 09:36:48 +0200 |
---|---|---|
committer | Martin Liska <marxin@gcc.gnu.org> | 2019-08-12 07:36:48 +0000 |
commit | 8f88e7f6f8ed55effda60b6475d8dbcb247dd9a2 (patch) | |
tree | f18f3a9629c8672d0bed03509356c4ffe49ae772 /libiberty/filedescriptor.c | |
parent | 90fb7fae3c84cafe73e0bd7e5bb02581c42c4840 (diff) | |
download | gcc-8f88e7f6f8ed55effda60b6475d8dbcb247dd9a2.zip gcc-8f88e7f6f8ed55effda60b6475d8dbcb247dd9a2.tar.gz gcc-8f88e7f6f8ed55effda60b6475d8dbcb247dd9a2.tar.bz2 |
Move is_valid_fd to filedescriptor.c file.
2019-08-12 Martin Liska <mliska@suse.cz>
* Makefile.in: Add filedescriptor.c.
* filedescriptor.c: New file.
* lrealpath.c (is_valid_fd): Remove.
From-SVN: r274273
Diffstat (limited to 'libiberty/filedescriptor.c')
-rw-r--r-- | libiberty/filedescriptor.c | 47 |
1 files changed, 47 insertions, 0 deletions
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 <fcntl.h> +#endif + +#if defined (_WIN32) +#define WIN32_LEAN_AND_MEAN +#include <windows.h> /* 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 +} |