nc 0.9.7

Access system calls directly
Documentation 
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/// Open a filesystem by name so that it can be configured for mounting.
pub unsafe fn fsopen<P: AsRef<Path>>(fs_name: P, flags: u32) -> Result<(), Errno> {
    let fs_name = CString::new(fs_name.as_ref());
    let fs_name_ptr = fs_name.as_ptr() as usize;
    let flags = flags as usize;
    syscall2(SYS_FSOPEN, fs_name_ptr, flags).map(drop)
}