Function nc::getdents [−][src]
pub fn getdents(fd: i32, dirp: usize, count: size_t) -> Result<ssize_t, Errno>
Expand description
Get directory entries.
let path = "/etc"; let ret = nc::open(path, nc::O_DIRECTORY, 0); assert!(ret.is_ok()); let fd = ret.unwrap(); const BUF_SIZE: usize = 4 * 1024; loop { // TODO(Shaohua): Only allocate one buf block. let mut buf: Vec<u8> = vec![0; BUF_SIZE]; let ret = nc::getdents(fd, buf.as_mut_ptr() as usize, BUF_SIZE); assert!(ret.is_ok()); let buf_box = buf.into_boxed_slice(); let buf_box_ptr = Box::into_raw(buf_box) as *mut u8 as usize; let nread = ret.unwrap() as usize; if nread == 0 { break; } let mut bpos: usize = 0; while bpos < nread { let d = (buf_box_ptr + bpos) as *mut nc::linux_dirent_t; let d_ref = unsafe { &(*d) }; let mut name_vec: Vec<u8> = vec![]; // TODO(Shaohua): Calculate string len of name. for i in 0..nc::PATH_MAX { let c = d_ref.d_name[i as usize]; if c == 0 { break; } name_vec.push(c); } let name = String::from_utf8(name_vec).unwrap(); println!("name: {}", name); bpos += d_ref.d_reclen as usize; } } assert!(nc::close(fd).is_ok());