Try 4, lol.

src/directory.zig

@@ -1,66 +0,0 @@
-const std = @import("std");
-const io = std.io;
-
-const InodeType = @import("inode/inode.zig").InodeType;
-
-const DirHeader = extern struct {
-    count: u32,
-    inode_block_start: u32,
-    inode_num: u32,
-};
-
-const RawDirEntryStart = packed struct {
-    inode_block_offset: u16,
-    /// Difference from the current DirHeader inode_num
-    inode_num_difference: i16,
-    /// Extended inodes will be their basic type.
-    inode_type: InodeType,
-    name_size: u16,
-};
-
-pub const DirEntry = struct {
-    block_start: u32,
-    offset: u16,
-    inode_num: u32,
-    name: []const u8,
-
-    fn init(alloc: std.mem.Allocator, hdr: DirHeader, rdr: io.AnyReader) !DirEntry {
-        const raw = try rdr.readStruct(RawDirEntryStart);
-        const name = try alloc.alloc(u8, raw.name_size + 1);
-        errdefer alloc.free(name);
-        _ = try rdr.read(name);
-        return .{
-            .block_start = hdr.inode_block_start,
-            .offset = raw.inode_block_offset,
-            .inode_num = if (raw.inode_num_difference > 0)
-                hdr.inode_num + @abs(raw.inode_num_difference)
-            else
-                hdr.inode_num - @abs(raw.inode_num_difference),
-            .name = name,
-        };
-    }
-
-    pub fn deinit(self: DirEntry, alloc: std.mem.Allocator) void {
-        alloc.free(self.name);
-    }
-};
-
-pub fn readDirectory(alloc: std.mem.Allocator, rdr: io.AnyReader, size: u64) !std.StringHashMap(DirEntry) {
-    var out: std.StringHashMap(DirEntry) = .init(alloc);
-    errdefer out.deinit();
-    var red_size: u64 = 3;
-    var hdr: DirHeader = undefined;
-    while (red_size < size) {
-        hdr = try rdr.readStruct(DirHeader);
-        red_size += 12;
-        var i: u32 = 0;
-        try out.ensureUnusedCapacity(hdr.count + 1);
-        while (i <= hdr.count) : (i += 1) {
-            var tmp: DirEntry = try .init(alloc, hdr, rdr);
-            errdefer tmp.deinit(alloc);
-            out.putAssumeCapacity(tmp.name, tmp);
-            red_size += 8 + tmp.name.len;
-        }
-    }
-    return out;
-}