Function nc::write

pub unsafe fn write(
    fd: i32,
    buf_ptr: usize,
    count: size_t
) -> Result<ssize_t, Errno>

Write to a file descriptor.

Example

let path = "/tmp/nc-write";
let ret = unsafe { nc::openat(nc::AT_FDCWD, path, nc::O_CREAT | nc::O_WRONLY, 0o644) };
assert!(ret.is_ok());
let fd = ret.unwrap();
let msg = "Hello, Rust!";
let ret = unsafe { nc::write(fd, msg.as_ptr() as usize, msg.len()) };
assert!(ret.is_ok());
assert_eq!(ret, Ok(msg.len() as nc::ssize_t));
let ret = unsafe { nc::close(fd) };
assert!(ret.is_ok());
let ret = unsafe { nc::unlinkat(nc::AT_FDCWD, path, 0) };
assert!(ret.is_ok());