From 4682deeb62247d34de87f8e777f99e2d337fd377 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Sun, 20 Oct 2024 15:21:43 +0200 Subject: New upstream version 1.3 --- tests/dup-safer-flag.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 tests/dup-safer-flag.c (limited to 'tests/dup-safer-flag.c') diff --git a/tests/dup-safer-flag.c b/tests/dup-safer-flag.c new file mode 100644 index 00000000..ec2e311e --- /dev/null +++ b/tests/dup-safer-flag.c @@ -0,0 +1,38 @@ +/* Duplicate a file descriptor result, avoiding clobbering + STD{IN,OUT,ERR}_FILENO, with specific flags. + + Copyright (C) 2001, 2004-2006, 2009-2024 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 . */ + +/* Written by Paul Eggert and Eric Blake. */ + +#include + +/* Specification. */ +#include "unistd-safer.h" + +#include +#include + +/* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or + STDERR_FILENO. If FLAG contains O_CLOEXEC, behave like + fcntl(F_DUPFD_CLOEXEC) rather than fcntl(F_DUPFD). */ + +int +dup_safer_flag (int fd, int flag) +{ + return fcntl (fd, (flag & O_CLOEXEC) ? F_DUPFD_CLOEXEC : F_DUPFD, + STDERR_FILENO + 1); +} -- cgit v1.2.3