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/// Change name or location of a file.
///
/// # Examples
///
/// ```
/// let path = "/tmp/nc-renameat2";
/// let ret = unsafe { nc::openat(nc::AT_FDCWD, path, nc::O_WRONLY | nc::O_CREAT, 0o644) };
/// assert!(ret.is_ok());
/// let fd = ret.unwrap();
/// let ret = unsafe { nc::close(fd) };
/// assert!(ret.is_ok());
/// let new_path = "/tmp/nc-renameat2-new";
/// let flags = nc::RENAME_NOREPLACE;
/// let ret = unsafe { nc::renameat2(nc::AT_FDCWD, path, nc::AT_FDCWD, new_path, flags) };
/// assert!(ret.is_ok());
/// let ret = unsafe { nc::unlinkat(nc::AT_FDCWD, new_path, 0) };
/// assert!(ret.is_ok());
/// ```
pub unsafe fn renameat2<P: AsRef<Path>>(
olddfd: i32,
oldfilename: P,
newdfd: i32,
newfilename: P,
flags: i32,
) -> Result<(), Errno> {
let olddfd = olddfd as usize;
let oldfilename = CString::new(oldfilename.as_ref());
let oldfilename_ptr = oldfilename.as_ptr() as usize;
let newdfd = newdfd as usize;
let newfilename = CString::new(newfilename.as_ref());
let newfilename_ptr = newfilename.as_ptr() as usize;
let flags = flags as usize;
unsafe {
syscall5(
SYS_RENAMEAT2,
olddfd,
oldfilename_ptr,
newdfd,
newfilename_ptr,
flags,
)
.map(drop)
}
}