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

47 lines
1.5 KiB
C

/* Linux openat syscall implementation, non-LFS.
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 <fcntl.h>
#include <stdarg.h>
#include <sysdep-cancel.h>
#ifndef __OFF_T_MATCHES_OFF64_T
/* Open FILE with access OFLAG. Interpret relative paths relative to
the directory associated with FD. If OFLAG includes O_CREAT or
O_TMPFILE, a fourth argument is the file protection. */
int
__libc_openat (int fd, const char *file, int oflag, ...)
{
mode_t mode = 0;
if (__OPEN_NEEDS_MODE (oflag))
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, mode_t);
va_end (arg);
}
return SYSCALL_CANCEL (openat, fd, file, oflag, mode);
}
weak_alias (__libc_openat, __openat)
libc_hidden_weak (__openat)
weak_alias (__libc_openat, openat)
#endif