glibc/sysdeps/unix/sysv/linux/gentempfd.c

36 lines
1.2 KiB
C

/* Generate a temporary file descriptor. Linux version.
Copyright (C) 2017-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
int
__gen_tempfd (int flags)
{
int fd = __open (P_tmpdir, O_RDWR | O_TMPFILE | O_EXCL | flags,
S_IRUSR | S_IWUSR);
if (fd < 0 && errno == ENOENT && strcmp (P_tmpdir, "/tmp") != 0)
fd = __open ("/tmp", O_RDWR | O_TMPFILE | O_EXCL | flags,
S_IRUSR | S_IWUSR);
return fd;
}
libc_hidden_def (__gen_tempfd)