Function fallocate

pub unsafe fn fallocate(
    fd: i32,
    mode: i32,
    offset: i64,
    len: i64,
) -> Result<(), i32> 

Available on crate feature dep_nc only.

Manipulate file space.

Examples

let path = "/tmp/nc-fallocate";
let fd = unsafe { nc::openat(nc::AT_FDCWD, path, nc::O_WRONLY | nc::O_CREAT, 0o644) };
assert!(fd.is_ok());
let fd = fd.unwrap();
let ret = unsafe { nc::fallocate(fd, 0, 0, 64 * 1024) };
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());