Renamed Table.zig to Lookup.Zig

Added Lookup.Value (reason for above)
Added FragCache
Small tweaks & fixes (I forgot about)

src/archive.zig

@@ -7,6 +7,7 @@ const File = @import("file.zig");
 const Inode = @import("inode.zig");
 const Decomp = @import("decomp.zig");
 const Options = @import("options.zig");
+const Decompress = @import("utils/decompress.zig");
 
 const Archive = @This();
 
@@ -60,12 +61,17 @@ pub fn open(self: *Archive, alloc: std.mem.Allocator, filepath: []const u8) !Fil
     return root.open(alloc, filepath);
 }
 pub fn extract(self: *Archive, alloc: std.mem.Allocator, io: Io, ext_loc: []const u8, options: Options) !void {
-    _ = self;
-    _ = alloc;
-    _ = io;
-    _ = ext_loc;
-    _ = options;
-    return error.TODO;
+    const root_inode: Inode = try .readLocation(
+        alloc,
+        self.map.memory,
+        self.root_inode_ref.start,
+        self.root_inode_ref.offset,
+        self.super,
+    );
+
+    // TODO: use single & multi respectively.
+
+    return Decompress.single(alloc, io, self.map.memory, self.super, root_inode, ext_loc, options);
 }
 
 // Superblock

src/decomp.zig

@@ -140,7 +140,9 @@ fn zigZstd(alloc: std.mem.Allocator, in: []u8, out: []u8) Error!usize {
 }
 fn cZstd(_: std.mem.Allocator, in: []u8, out: []u8) Error!usize {
     const res = c.ZSTD_decompress(out.ptr, out.len, in.ptr, in.len);
-    if (c.ZSTD_isError(res) == 1)
+    if (c.ZSTD_isError(res) == 1) {
+        std.debug.print("{s}\n", .{c.ZSTD_getErrorName(res)});
         return Error.ReadFailed;
+    }
     return res;
 }

src/dir.zig

@@ -21,7 +21,7 @@ pub fn read(alloc: std.mem.Allocator, rdr: *Io.Reader, size: u32) !Directory {
 
         try out.ensureUnusedCapacity(alloc, hdr.count + 1);
 
-        for (hdr.count + 1) |_| {
+        for (0..hdr.count + 1) |_| {
             const raw: RawEntry = try utils.readValueRdr(RawEntry, rdr);
 
             const name = try alloc.alloc(u8, raw.name_size + 1);
@@ -36,11 +36,11 @@ pub fn read(alloc: std.mem.Allocator, rdr: *Io.Reader, size: u32) !Directory {
                 .name = name,
             };
 
-            red += @sizeOf(RawEntry + raw.name_size + 1);
+            red += @sizeOf(RawEntry) + raw.name_size + 1;
         }
     }
 
-    return out.toOwnedSlice(alloc);
+    return .{ .entries = try out.toOwnedSlice(alloc) };
 }
 pub fn deinit(self: Directory, alloc: std.mem.Allocator) void {
     for (self.entries) |entry|

src/file.zig

@@ -73,27 +73,13 @@ pub fn open(self: File, alloc: std.mem.Allocator, filepath: []const u8) !File {
     if (path.len == 0 or (path.len == 1 and path[0] == '.'))
         return self.copy(alloc);
 
-    const first_element: []u8 = std.mem.sliceTo(path, '/');
+    const first_element: []const u8 = std.mem.sliceTo(path, '/');
     const final = first_element.len == path.len;
 
-    var dir_size: u32 = undefined;
-    var dir_rdr: MetadataReader = undefined;
+    var dir_rdr: MetadataReader = .init(alloc, self.data[self.inode.data.dir.start + self.super.dir_table_start ..], self.super.decomp_fn);
+    try dir_rdr.interface.discardAll(self.inode.data.dir.offset);
 
-    switch (self.inode.data) {
-        .dir => |d| {
-            dir_rdr = .init(alloc, self.data[d.block..], self.super.decomp_fn);
-            try dir_rdr.interface.discardAll(d.offset);
-
-            dir_size = d.size;
-        },
-        .ext_dir => |d| {
-            dir_rdr = .init(alloc, self.data[d.block..], self.super.decomp_fn);
-            try dir_rdr.interface.discardAll(d.offset);
-
-            dir_size = d.size;
-        },
-        else => unreachable,
-    }
+    const dir_size = self.inode.data.dir.size;
 
     const entry: Directory.Entry = blk: {
         var dir: Directory = try .read(alloc, &dir_rdr.interface, dir_size);
@@ -101,17 +87,18 @@ pub fn open(self: File, alloc: std.mem.Allocator, filepath: []const u8) !File {
 
         var entries = dir.entries;
 
-        while (entries.len > 0) {
+        while (entries.len > 1) {
             const idx = entries.len / 2;
             const val = entries[idx];
 
             switch (std.mem.order(u8, first_element, val.name)) {
                 .eq => {
                     if (final) {
-                        const inode: Inode = try .fromRef(
+                        const inode: Inode = try .readLocation(
                             alloc,
                             self.data,
-                            .{ .start = val.start, .offset = val.offset },
+                            val.start,
+                            val.offset,
                             self.super,
                         );
                         errdefer inode.deinit(alloc);
@@ -144,10 +131,11 @@ pub fn open(self: File, alloc: std.mem.Allocator, filepath: []const u8) !File {
         .data = self.data,
         .super = self.super,
 
-        .inode = try .fromRef(
+        .inode = try .readLocation(
             alloc,
             self.data,
-            .{ .start = entry.start, .offset = entry.offset },
+            entry.start,
+            entry.offset,
             self.super,
         ),
         .name = "",

src/frag_cache.zig

@@ -0,0 +1,72 @@
+const std = @import("std");
+const Io = std.Io;
+
+const Lookup = @import("lookup.zig");
+const Decomp = @import("decomp.zig");
+const BlockSize = @import("inode.zig").BlockSize;
+
+const FragCache = @This();
+
+block_size: u32,
+
+entries: Lookup.Table(Entry),
+
+cache: std.AutoHashMapUnmanaged(u32, CacheData) = .empty,
+
+mut: Io.Mutex = .init,
+
+pub fn init(data: []u8, decomp: Decomp.Fn, block_size: u32, start: u64, count: u32) !FragCache {
+    return .{
+        .block_size = block_size,
+
+        .entries = try .init(data, decomp, start, count),
+    };
+}
+pub fn deinit(self: *FragCache, alloc: std.mem.Allocator) void {
+    self.entries.deinit(alloc);
+    var iter = self.cache.valueIterator();
+    while (iter.next()) |cache| {
+        if (cache.allocd)
+            alloc.free(cache.data);
+    }
+    self.cache.deinit(alloc);
+}
+
+pub fn get(self: *FragCache, alloc: std.mem.Allocator, io: Io, idx: u32) ![]u8 {
+    const cache = self.cache.get(idx);
+    if (cache != null) return cache.?.data;
+
+    const entry = try self.entries.get(alloc, io, idx);
+
+    const data = self.entries.data[entry.start..][0..entry.size.size];
+
+    if (entry.size.uncompressed)
+        return data;
+
+    try self.mut.lock(io);
+    defer self.mut.unlock(io);
+
+    const cache_data = try alloc.alloc(u8, self.block_size);
+    errdefer alloc.free(cache_data);
+
+    _ = try self.entries.decomp(alloc, data, cache_data);
+
+    try self.cache.put(alloc, idx, .{
+        .data = cache_data,
+        .allocd = true,
+    });
+
+    return cache_data;
+}
+
+// Types
+
+pub const Entry = extern struct {
+    start: u64,
+    size: BlockSize,
+    _: u32,
+};
+const CacheData = struct {
+    data: []u8,
+    allocd: bool,
+};

src/inode.zig

@@ -40,9 +40,7 @@ pub fn copy(self: Inode, alloc: std.mem.Allocator) !Inode {
 
     switch (new_inode.data) {
         .file => |*f| f.blocks = try alloc.dupe(BlockSize, f.blocks),
-        .ext_file => |*f| f.blocks = try alloc.dupe(BlockSize, f.blocks),
         .symlink => |*f| f.target = try alloc.dupe(u8, f.target),
-        .ext_symlink => |*f| f.target = try alloc.dupe(u8, f.target),
         else => {},
     }
 
@@ -71,7 +69,7 @@ pub const BlockSize = packed struct(u32) {
 };
 
 pub const Type = enum(u16) {
-    dir,
+    dir = 1,
     file,
     symlink,
     block_dev,

src/lookup.zig

@@ -1,13 +1,26 @@
 const std = @import("std");
 const Io = std.Io;
 
-const util = @import("utils/util.zig");
-
-const MetadataReader = @import("utils/meta.zig");
 const Decomp = @import("decomp.zig");
 const Reference = @import("inode.zig").Reference;
+const MetadataReader = @import("utils/meta.zig");
+const util = @import("utils/util.zig");
 
-pub fn Lookup(comptime T: type) type {
+pub fn Value(comptime T: type, alloc: std.mem.Allocator, data: []u8, decomp: Decomp.Fn, table_start: u64, idx: u32) !T {
+    const ITEMS_PER_BLOCK = 8192 / @sizeOf(T);
+
+    const block_idx = idx / ITEMS_PER_BLOCK;
+    const value_idx = idx % ITEMS_PER_BLOCK;
+
+    const start = util.readValue(u64, data[table_start + (block_idx * 8) ..][0..8]);
+
+    var meta: MetadataReader = .init(alloc, data[start..], decomp);
+    try meta.interface.discardAll(value_idx * @sizeOf(T));
+
+    return util.readValueRdr(T, &meta.interface);
+}
+
+pub fn Table(comptime T: type) type {
     return struct {
         const Self = @This();
 
@@ -23,10 +36,8 @@ pub fn Lookup(comptime T: type) type {
         table: std.hash_map.AutoHashMapUnmanaged(u32, []T) = .empty,
         mut: Io.Mutex = .init,
 
-        pub fn init(alloc: std.mem.Allocator, data: []u8, decomp: Decomp.Fn, start: u64, count: u32) !Self {
+        pub fn init(data: []u8, decomp: Decomp.Fn, start: u64, count: u32) !Self {
             return .{
-                .alloc = alloc,
-
                 .data = data,
                 .decomp = decomp,
 
@@ -38,21 +49,26 @@ pub fn Lookup(comptime T: type) type {
         pub fn deinit(self: *Self, alloc: std.mem.Allocator) void {
             var iter = self.table.valueIterator();
             while (iter.next()) |block|
-                alloc.free(block);
+                alloc.free(block.*);
 
             self.table.deinit(alloc);
         }
 
-        fn getBlock(self: *Self, alloc: std.mem.Allocator, io: Io, idx: u32) ![]T {
-            const init_get = self.table.get(idx);
-            if (init_get != null) return init_get.?;
+        pub fn get(self: *Self, alloc: std.mem.Allocator, io: Io, idx: u32) !T {
+            if (idx >= self.count) return error.InvalidIndex;
 
-            self.mut.lock(io);
+            const block_idx = idx / ITEMS_PER_BLOCK;
+            const value_idx = idx % ITEMS_PER_BLOCK;
+
+            const init_get = self.table.get(block_idx);
+            if (init_get != null) return init_get.?[value_idx];
+
+            try self.mut.lock(io);
             defer self.mut.unlock(io);
 
-            const start = util.readValue(u64, self.data[self.start + (idx * 8) ..][0..8]);
+            const start = util.readValue(u64, self.data[self.start + (block_idx * 8) ..][0..8]);
 
-            const len = if (idx == self.block_count - 1) self.count % ITEMS_PER_BLOCK else ITEMS_PER_BLOCK;
+            const len = if (block_idx == self.block_count - 1) self.count % ITEMS_PER_BLOCK else ITEMS_PER_BLOCK;
 
             const new_block = try alloc.alloc(T, len);
             errdefer alloc.free(new_block);
@@ -61,41 +77,31 @@ pub fn Lookup(comptime T: type) type {
 
             try meta.interface.readSliceEndian(T, new_block, .little);
 
-            try self.table.put(alloc, idx, new_block);
+            try self.table.put(alloc, block_idx, new_block);
 
-            return new_block;
-        }
-
-        pub fn get(self: *Self, alloc: std.mem.Allocator, io: Io, idx: u32) !T {
-            if (idx >= self.count) return error.InvalidIndex;
-
-            const block_idx = idx / ITEMS_PER_BLOCK;
-
-            const block = self.getBlock(io, alloc, block_idx);
-
-            return block[idx % ITEMS_PER_BLOCK];
+            return new_block[value_idx];
         }
     };
 }
 
 pub const Xattr = struct {
     kv_start: u64,
-    lookup: Lookup(XattrLookup),
+    lookup: Table(XattrLookup),
 
-    pub fn init(alloc: std.mem.Allocator, data: []u8, decomp: Decomp.Fn, start: u64) !Xattr {
+    pub fn init(data: []u8, decomp: Decomp.Fn, start: u64) !Xattr {
         const kv_start = util.readValue(u64, data[start..][0..8]);
         const count = util.readValue(u32, data[start..][8..12]);
 
         return .{
             .kv_start = kv_start,
-            .lookup = try .init(alloc, data, decomp, start + 16, count),
+            .lookup = try .init(data, decomp, start + 16, count),
         };
     }
     pub fn deinit(self: *Xattr, alloc: std.mem.Allocator) void {
         self.lookup.deinit(alloc);
     }
 
-    pub fn get(self: *Xattr, alloc: std.mem.Allocator, io: Io, idx: u32) !KV {
+    pub fn get(self: *Xattr, alloc: std.mem.Allocator, io: Io, idx: u32) ![]KV {
         const lookup = try self.lookup.get(alloc, io, idx);
 
         var meta: MetadataReader = .init(alloc, self.lookup.data[self.kv_start + lookup.ref.start ..], self.lookup.decomp);
@@ -120,8 +126,24 @@ pub const Xattr = struct {
 
             @memcpy(kv.name[0..prefix.len], prefix);
 
-            if (entry.type.out_of_line) {}
+            var value_meta = if (entry.type.out_of_line) blk: {
+                const ool_ref = try util.readValueRdr(Reference, &meta.interface);
+
+                var ool_meta: MetadataReader = .init(alloc, self.lookup.data[self.kv_start + ool_ref.start ..], self.lookup.decomp);
+                try ool_meta.interface.discardAll(ool_ref.offset);
+
+                break :blk ool_meta;
+            } else meta;
+
+            const value_len = try util.readValueRdr(u32, &value_meta.interface);
+
+            kv.value = try alloc.alloc(u8, value_len);
+            errdefer alloc.free(kv.value);
+
+            try value_meta.interface.readSliceEndian(u8, kv.value, .little);
         }
+
+        return kvs;
     }
 
     //types

src/options.zig

@@ -11,7 +11,10 @@ ignore_xattr: bool = false,
 
 dereference_symlink: bool = false,
 
+single_threaded: bool = false,
+
 pub const default: Options = .{};
+pub const single_threaded_default: Options = .{ .single_threaded = true };
 pub fn verboseDefault(wrt: *Writer) Options {
     return .{
         .verbose = true,

src/tests.zig

@@ -8,6 +8,8 @@ const Archive = @import("archive.zig");
 
 const TEST_ARCHIVE = "testing/LinuxPATest.sfs";
 
+const OPEN_TEST_LOCATION = "PortableApps/gVimPortable/GVim-v8.2.2965.glibc2.15-x86_64.AppImage";
+
 test "Open" {
     var archive_file = try Io.Dir.cwd().openFile(io, TEST_ARCHIVE, .{});
     defer archive_file.close(io);
@@ -15,8 +17,23 @@ test "Open" {
     var arc: Archive = try .init(io, archive_file, 0);
     defer arc.deinit(io);
 
-    std.debug.print("{}\n", .{arc.super});
-
     var root = try arc.root(alloc);
     defer root.deinit();
+
+    var test_open = try root.open(alloc, OPEN_TEST_LOCATION);
+    defer test_open.deinit();
+}
+
+const FULL_EXTRACT_LOCATION = "testing/TestExtractST";
+
+test "FullExtractSingleThreaded" {
+    Io.Dir.cwd().deleteTree(io, FULL_EXTRACT_LOCATION) catch {};
+
+    var archive_file = try Io.Dir.cwd().openFile(io, TEST_ARCHIVE, .{});
+    defer archive_file.close(io);
+
+    var arc: Archive = try .init(io, archive_file, 0);
+    defer arc.deinit(io);
+
+    try arc.extract(alloc, io, FULL_EXTRACT_LOCATION, .default);
 }

src/utils/data_reader.zig

@@ -31,7 +31,7 @@ interface: Io.Reader = .{
     },
 },
 
-pub fn init(alloc: std.mem.Allocator, data: []u8, decomp: Decomp.Fn, block_size: u32, size: u64, blocks: []BlockSize) DataReader {
+pub fn init(alloc: std.mem.Allocator, data: []u8, decomp: Decomp.Fn, block_size: u32, size: u64, blocks: []BlockSize) !DataReader {
     return .{
         .alloc = alloc,
 

src/utils/decompress.zig

@@ -1,26 +1,37 @@
 const std = @import("std");
 const Io = std.Io;
 
-const Options = @import("../options.zig");
-const Inode = @import("../inode.zig");
+const Super = @import("../archive.zig").Super;
 const Decomp = @import("../decomp.zig");
 const Directory = @import("../dir.zig");
-const MetadataReader = @import("meta.zig");
+const FragCache = @import("../frag_cache.zig");
+const Inode = @import("../inode.zig");
+const Lookup = @import("../lookup.zig");
+const Options = @import("../options.zig");
 const DataReader = @import("data_reader.zig");
-const Table = @import("../table.zig");
-const Super = @import("../archive.zig").Super;
+const MetadataReader = @import("meta.zig");
 
-pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp.Fn, super: Super, inode: Inode, filepath: []const u8, options: Options) !void {
+// TODO: Add verbose logging.
+
+pub fn single(alloc: std.mem.Allocator, io: Io, data: []u8, super: Super, inode: Inode, filepath: []const u8, options: Options) !void {
     const path = std.mem.trim(u8, filepath, "/");
 
-    var pool: std.ArrayList(InodeAndPath) = .initBuffer(&.{.{
+    var id_table: Lookup.Table(u16) = try .init(data, super.decomp_fn, super.id_table_start, super.id_count);
+    defer id_table.deinit(alloc);
+    var xattr_table: Lookup.Xattr = try .init(data, super.decomp_fn, super.xattr_table_start);
+    defer xattr_table.deinit(alloc);
+    var frag_cache: FragCache = try .init(data, super.decomp_fn, super.block_size, super.frag_table_start, super.frag_count);
+    defer frag_cache.deinit(alloc);
+
+    var pool: std.ArrayList(InodeAndPath) = try .initCapacity(alloc, 15);
+    pool.appendAssumeCapacity(.{
         .inode = inode,
         .path = path,
         .root = true,
-    }});
+    });
     defer {
         while (pool.pop()) |in|
-            in.deinit(in);
+            in.deinit(alloc);
         pool.deinit(alloc);
     }
 
@@ -31,25 +42,28 @@ pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp
         dirs.deinit(alloc);
     }
 
-    // TODO: Use options
-    _ = options;
+    var cwd = Io.Dir.cwd();
 
     while (pool.pop()) |in| {
         switch (in.inode.data) {
             .dir => |d| {
-                try Io.Dir.cwd().createDirPath(io, in.path);
+                try cwd.createDirPath(io, in.path);
 
                 if (d.size <= 3) {
                     defer if (in.path.len != path.len)
                         in.deinit(alloc);
-                    // TODO: apply permissions & xattrs immediately.
+
+                    var fil = try cwd.openFile(io, in.path, .{});
+                    defer fil.close(io);
+
+                    try applyPermissions(alloc, io, &id_table, &xattr_table, in.inode.header, d.xattr_idx, fil, options);
                     continue;
                 }
 
-                var meta: MetadataReader = .init(alloc, data[d.start], decomp);
+                var meta: MetadataReader = .init(alloc, data[d.start..], super.decomp_fn);
                 try meta.interface.discardAll(d.offset);
 
-                var dir: Directory = .read(alloc, &meta.interface, d.size);
+                var dir: Directory = try .read(alloc, &meta.interface, d.size);
                 defer dir.deinit(alloc);
 
                 for (dir.entries) |entry| {
@@ -73,20 +87,21 @@ pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp
                 defer if (in.path.len != path.len)
                     in.deinit(alloc);
 
-                var atomic = try Io.Dir.cwd().createFileAtomic(io, in.path, .{});
+                var atomic = try cwd.createFileAtomic(io, in.path, .{});
                 defer atomic.deinit(io);
 
-                var rdr: DataReader = .init(alloc, data[f.start..], decomp, super.block_size, f.size, f.blocks);
+                var rdr: DataReader = try .init(alloc, data[f.start..], super.decomp_fn, super.block_size, f.size, f.blocks);
                 defer rdr.deinit();
 
                 if (f.frag_idx != 0xFFFFFFFF) {
-                    //TODO: fragment
+                    const frag = try frag_cache.get(alloc, io, f.frag_idx);
+                    rdr.addFrag(frag);
                 }
+                var buf: [1024 * 50]u8 = undefined; // TODO: find a resonable buffer size.
+                var writer = atomic.file.writer(io, &buf);
+                _ = try rdr.interface.streamRemaining(&writer.interface);
 
-                var writer = atomic.file.writer(io, &[0]u8{}); // TODO: find a resonable buffer size.
-                try rdr.interface.streamRemaining(&writer.interface);
-
-                // TODO: apply permissions & xattrs
+                try applyPermissions(alloc, io, &id_table, &xattr_table, in.inode.header, f.xattr_idx, atomic.file, options);
 
                 try atomic.link(io);
             },
@@ -94,13 +109,13 @@ pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp
                 defer if (in.path.len != path.len)
                     in.deinit(alloc);
 
-                try Io.Dir.cwd().symLink(io, s.target, in.path, .{});
+                try cwd.symLink(io, s.target, in.path, .{});
             },
             .dev => |d| {
                 defer if (in.path.len != path.len)
                     in.deinit(alloc);
 
-                const mode = switch (in.inode.header.type) {
+                const mode: u32 = switch (in.inode.header.type) {
                     .char_dev, .ext_char_dev => std.os.linux.DT.CHR,
                     .block_dev, .ext_block_dev => std.os.linux.DT.BLK,
                     else => unreachable,
@@ -113,15 +128,16 @@ pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp
                 if (res != 0)
                     return error.MkNodError;
 
-                // TODO: apply permissions & xattrs
+                var fil = try cwd.openFile(io, in.path, .{});
+                defer fil.close(io);
+
+                try applyPermissions(alloc, io, &id_table, &xattr_table, in.inode.header, d.xattr_idx, fil, options);
             },
             .fifo => |f| {
-                _ = f;
-
                 defer if (in.path.len != path.len)
                     in.deinit(alloc);
 
-                const mode = switch (in.inode.header.type) {
+                const mode: u32 = switch (in.inode.header.type) {
                     .fifo, .ext_fifo => std.os.linux.DT.FIFO,
                     .socket, .ext_socket => std.os.linux.DT.SOCK,
                     else => unreachable,
@@ -134,7 +150,10 @@ pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp
                 if (res != 0)
                     return error.MkNodError;
 
-                // TODO: apply permissions & xattrs
+                var fil = try cwd.openFile(io, in.path, .{});
+                defer fil.close(io);
+
+                try applyPermissions(alloc, io, &id_table, &xattr_table, in.inode.header, f.xattr_idx, fil, options);
             },
         }
     }
@@ -142,10 +161,24 @@ pub fn single(alloc: std.mem.Allocator, io: Io, data: []const u8, decomp: Decomp
     while (dirs.pop()) |dir| {
         defer if (dir.path.len != path.len)
             alloc.free(dir.path);
-        // TODO: apply permissions & xattrs
+
+        var fil = try cwd.openFile(io, dir.path, .{});
+        defer fil.close(io);
+
+        try applyPermissions(alloc, io, &id_table, &xattr_table, dir.inode.header, dir.inode.data.dir.xattr_idx, fil, options);
     }
 }
-pub fn multi() !void {}
+pub fn multi(alloc: std.mem.Allocator, io: Io, data: []const u8, super: Super, inode: Inode, filepath: []const u8, options: Options) !void {
+    _ = alloc;
+    _ = io;
+    _ = data;
+    _ = super;
+    _ = inode;
+    _ = filepath;
+    _ = options;
+
+    return error.TODO;
+}
 
 // Utils
 
@@ -161,4 +194,26 @@ const InodeAndPath = struct {
     }
 };
 
-inline fn applyPermissions(alloc: std.mem.Allocator, io: Io, id_table: Table.Lookup(u16), xattr_table: Table.Xattr, inode: Inode, path: []const u8, options: Options) !void {}
+fn applyPermissions(alloc: std.mem.Allocator, io: Io, id_table: *Lookup.Table(u16), xattr_table: *Lookup.Xattr, header: Inode.Header, xattr_idx: ?u32, fil: Io.File, options: Options) !void {
+    if (!options.ignore_permissions) {
+        try fil.setPermissions(io, @enumFromInt(header.permission));
+
+        try fil.setTimestamps(io, .{ .modify_timestamp = .{ .new = .fromNanoseconds(@as(i96, @intCast(header.mod_time)) * std.time.ns_per_ms) } });
+
+        try fil.setOwner(io, try id_table.get(alloc, io, header.uid_idx), try id_table.get(alloc, io, header.gid_idx));
+    }
+    if (!options.ignore_xattr and xattr_idx != null) {
+        const xattrs = try xattr_table.get(alloc, io, xattr_idx.?);
+        defer {
+            for (xattrs) |kv|
+                kv.deinit(alloc);
+            alloc.free(xattrs);
+        }
+
+        for (xattrs) |kv| {
+            const res = std.os.linux.fsetxattr(fil.handle, kv.name, kv.value.ptr, kv.value.len, 0);
+            if (res != 0)
+                return error.FSetXattrError;
+        }
+    }
+}