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/* Copyright (C) 2005-2020 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 <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <sys/stat.h>
#include <kernel-features.h>
/* Some mostly-generic code (e.g. sysdeps/posix/getcwd.c) uses this variable
if __ASSUME_ATFCTS is not defined. */
#ifndef __ASSUME_ATFCTS
int __have_atfcts;
#endif
/* Open FILE with access OFLAG. Interpret relative paths relative to
the directory associated with FD. If O_CREAT or O_TMPFILE is in OFLAG, a
third argument is the file protection. */
int
__openat (int fd, const char *file, int oflag, ...)
{
int mode;
if (file == NULL)
{
__set_errno (EINVAL);
return -1;
}
if (fd != AT_FDCWD && file[0] != '/')
{
/* Check FD is associated with a directory. */
struct stat64 st;
if (__fxstat64 (_STAT_VER, fd, &st) != 0)
return -1;
if (!S_ISDIR (st.st_mode))
{
__set_errno (ENOTDIR);
return -1;
}
}
if (__OPEN_NEEDS_MODE (oflag))
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, int);
va_end (arg);
ignore_value (mode);
}
__set_errno (ENOSYS);
return -1;
}
libc_hidden_def (__openat)
weak_alias (__openat, openat)
stub_warning (openat)
/* __openat_2 is a generic wrapper that calls __openat.
So give a stub warning for that symbol too. */
stub_warning (__openat_2)
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