lib/std/Io.zig             |   2 +
 lib/std/Io/Dir.zig         | 162 ++++++++++++++++++--------------
 lib/std/Io/File.zig        |  34 ++++++-
 lib/std/Io/File/Atomic.zig | 105 +++++++++------------
 lib/std/Io/File/Writer.zig |   8 ++
 lib/std/Io/Threaded.zig    | 161 ++++++++++++++++++++++++++++++-
 lib/std/zig/system.zig     |   1 -
 7 files changed, 336 insertions(+), 137 deletions(-)