1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/// Set extended attribute value.
///
/// # Examples
///
/// ```
/// let path = "/tmp/nc-fsetxattr";
/// 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 attr_name = "user.creator";
/// let attr_value = "nc-0.0.1";
/// //let flags = 0;
/// let flags = nc::XATTR_CREATE;
/// let ret = unsafe {
/// nc::fsetxattr(
/// fd,
/// &attr_name,
/// attr_value.as_bytes(),
/// flags,
/// )
/// };
/// assert!(ret.is_ok());
/// let ret = unsafe { nc::close(fd) };
/// assert!(ret.is_ok());
/// let ret = unsafe { nc::unlinkat(nc::AT_FDCWD, path, 0) };
/// assert!(ret.is_ok());
/// ```
pub unsafe fn fsetxattr<P: AsRef<Path>>(
fd: i32,
name: P,
value: &[u8],
flags: i32,
) -> Result<(), Errno> {
let fd = fd as usize;
let name = CString::new(name.as_ref());
let name_ptr = name.as_ptr() as usize;
let value_ptr = value.as_ptr() as usize;
let size = value.len();
let flags = flags as usize;
syscall5(SYS_FSETXATTR, fd, name_ptr, value_ptr, size, flags).map(drop)
}