diff options
Diffstat (limited to 'tests/fd-safer-flag.c')
-rw-r--r-- | tests/fd-safer-flag.c | 52 |
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; -} |