statx

fn statx(
    ev: *Evented,
    cancel_region: *CancelRegion,
    dir: fd_t,
    path: [*:0]const u8,
    flags: u32,
) (Dir.StatError || Dir.PathNameError || error{ FileNotFound, NotDir, SymLinkLoop })!Dir.Stat {
    while (true) {
        var statx_buf = std.mem.zeroes(linux.Statx);
        const thread = try cancel_region.awaitIoUring();
        thread.enqueue().* = .{
            .opcode = .STATX,
            .flags = 0,
            .ioprio = 0,
            .fd = dir,
            .off = @intFromPtr(&statx_buf),
            .addr = @intFromPtr(path),
            .len = @bitCast(linux_statx_request),
            .rw_flags = flags,
            .user_data = @intFromPtr(cancel_region.fiber),
            .buf_index = 0,
            .personality = 0,
            .splice_fd_in = 0,
            .addr3 = 0,
            .resv = 0,
        };
        ev.yield(null, .nothing);
        switch (cancel_region.errno()) {
            .SUCCESS => return statFromLinux(&statx_buf),
            .INTR, .CANCELED => {},
            .ACCES => return error.AccessDenied,
            .BADF => |err| return errnoBug(err), // File descriptor used after closed.
            .FAULT => |err| return errnoBug(err),
            .INVAL => |err| return errnoBug(err),
            .LOOP => return error.SymLinkLoop,
            .NAMETOOLONG => |err| return errnoBug(err),
            .NOENT => return error.FileNotFound,
            .NOTDIR => return error.NotDir,
            .NOMEM => return error.SystemResources,
            else => |err| return unexpectedErrno(err),
        }
    }
}