summaryrefslogtreecommitdiff
path: root/tests/fd-safer-flag.c
diff options
context:
space:
mode:
Diffstat (limited to 'tests/fd-safer-flag.c')
-rw-r--r--tests/fd-safer-flag.c52
1 files changed, 0 insertions, 52 deletions
diff --git a/tests/fd-safer-flag.c b/tests/fd-safer-flag.c
deleted file mode 100644
index 4cd1b148..00000000
--- a/tests/fd-safer-flag.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* Adjust a file descriptor result so that it avoids clobbering
- STD{IN,OUT,ERR}_FILENO, with specific flags.
-
- Copyright (C) 2005-2006, 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 and Eric Blake. */
-
-#include <config.h>
-
-/* Specification. */
-#include "unistd-safer.h"
-
-#include <errno.h>
-#include <unistd.h>
-
-/* Return FD, unless FD would be a copy of standard input, output, or
- error; in that case, return a duplicate of FD, closing FD. If FLAG
- contains O_CLOEXEC, the returned FD will have close-on-exec
- semantics. On failure to duplicate, close FD, set errno, and
- return -1. Preserve errno if FD is negative, so that the caller
- can always inspect errno when the returned value is negative.
-
- This function is usefully wrapped around functions that return file
- descriptors, e.g., fd_safer_flag (open ("file", O_RDONLY | flag), flag). */
-
-int
-fd_safer_flag (int fd, int flag)
-{
- if (STDIN_FILENO <= fd && fd <= STDERR_FILENO)
- {
- int f = dup_safer_flag (fd, flag);
- int e = errno;
- close (fd);
- errno = e;
- fd = f;
- }
-
- return fd;
-}