diff options
author | Jörg Frings-Fürst <debian@jff.email> | 2024-10-20 15:21:43 +0200 |
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committer | Jörg Frings-Fürst <debian@jff.email> | 2024-10-20 15:21:43 +0200 |
commit | 4682deeb62247d34de87f8e777f99e2d337fd377 (patch) | |
tree | 5bd5b5605b5f3a4b3c8ea7468c34c23094afdef4 /tests/dup-safer.c | |
parent | 00893e79fc62966067af1a106567db96bd170338 (diff) |
New upstream version 1.3upstream/1.3upstream
Diffstat (limited to 'tests/dup-safer.c')
-rw-r--r-- | tests/dup-safer.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/dup-safer.c b/tests/dup-safer.c new file mode 100644 index 00000000..b0df2278 --- /dev/null +++ b/tests/dup-safer.c @@ -0,0 +1,34 @@ +/* Invoke dup, but avoid some glitches. + + 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 <https://www.gnu.org/licenses/>. */ + +/* Written by Paul Eggert. */ + +#include <config.h> + +#include "unistd-safer.h" + +#include <fcntl.h> +#include <unistd.h> + +/* Like dup, but do not return STDIN_FILENO, STDOUT_FILENO, or + STDERR_FILENO. */ + +int +dup_safer (int fd) +{ + return fcntl (fd, F_DUPFD, STDERR_FILENO + 1); +} |