Function sys_mount

kernel/src/syscalls.rs:798–836

(
    context_ptr: *mut Context,
    syscall_id: u64,
    path_ptr: *const u8,
    path_len: u64)

}

fn sys_mount(
    context_ptr: *mut Context,
    syscall_id: u64,
    path_ptr: *const u8,
    path_len: u64) {

    let context = unsafe {&mut (*context_ptr)};

    // High 32 bits of RAX contain the handle
    let handle = syscall_id >> 32;

    // Convert raw pointer to a slice
    let u8_slice = unsafe {slice::from_raw_parts(path_ptr, path_len as usize)};
    let path_string = match str::from_utf8(u8_slice) {
        Ok(s) => s,
        Err(_) => {
            // Bad utf8 conversion
            context.rax = SYSCALL_ERROR_UTF8;
            return;
        }
    };
    if let Some(mut thread) = process::take_current_thread() {
        thread.set_context(context_ptr);
        let rdv = match thread.take_rendezvous(handle) {
            Some(rdv) => rdv,
            None => {
                // Invalid handle
                thread.return_error(SYSCALL_ERROR_INVALID_HANDLE);
                process::set_current_thread(thread);
                return;
            }
        };

        let mut vfs = thread.vfs(); // An Arc clone of the VFS
        vfs.mount(path_string, rdv);
        context.rax = 0; // No error (vfs.mount never fails. Probably should)
        process::set_current_thread(thread);
    }
}

/// Get a list of mounted paths in a memory handle
fn sys_listmounts(context_ptr: *mut Context) {