Function nc::ioctl

pub unsafe fn ioctl(fd: i32, cmd: i32, arg: usize) -> Result<(), Errno>

Control device.

Example

let path = "/tmp/nc-ioctl";
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 mut attr: i32 = 0;
let cmd = -2146933247; // nc::FS_IOC_GETFLAGS
let ret = unsafe { nc::ioctl(fd, cmd, &mut attr as *mut i32 as usize) };
assert!(ret.is_ok());
println!("attr: {}", attr);

let ret = unsafe { nc::close(fd) };
assert!(ret.is_ok());
let ret = unsafe { nc::unlinkat(nc::AT_FDCWD, path, 0) };
assert!(ret.is_ok());