Proper zig project organization

2025-05-14 11:46:09 -05:00
parent 6dd3054006
commit 5daffdafc7
17 changed files with 198 additions and 26 deletions
@@ -0,0 +1,113 @@
+const std = @import("std");
+
+pub const InodeRef = packed struct {
+    offset: u16,
+    block_start: u32,
+    _: u16,
+};
+
+pub const InodeType = enum(u16) {
+    dir = 1,
+    file,
+    symlink,
+    block_device,
+    char_device,
+    fifo,
+    socket,
+    ext_dir,
+    ext_file,
+    ext_symlink,
+    ext_block_device,
+    ext_char_device,
+    ext_fifo,
+    ext_socket,
+};
+
+pub const InodeHeader = packed struct {
+    inode_type: InodeType,
+    perm: u16,
+    uid_index: u16,
+    gid_index: u16,
+    mod_time: u32,
+    inode_num: u32,
+};
+
+pub const InodeData = union(enum) {
+    dir: dir.DirInode,
+    file: file.FileInode,
+    symlink: sym.SymlinkInode,
+    block_device: misc.DeviceInode,
+    char_device: misc.DeviceInode,
+    fifo: misc.IPCInode,
+    socket: misc.IPCInode,
+    ext_dir: dir.ExtDirInode,
+    ext_file: file.ExtFileInode,
+    ext_symlink: sym.ExtSymlinkInode,
+    ext_block_device: misc.ExtDeviceInode,
+    ext_char_device: misc.ExtDeviceInode,
+    ext_fifo: misc.ExtIPCInode,
+    ext_socket: misc.ExtIPCInode,
+};
+
+const dir = @import("inode_types/dir.zig");
+const file = @import("inode_types/file.zig");
+const sym = @import("inode_types/sym.zig");
+const misc = @import("inode_types/misc.zig");
+
+pub const Inode = struct {
+    header: InodeHeader,
+    data: InodeData,
+};
+
+const io = @import("std").io;
+
+pub fn readInode(rdr: io.AnyReader, block_size: u32, alloc: std.mem.Allocator) !Inode {
+    const hdr = try rdr.readStruct(InodeHeader);
+    return Inode{
+        .header = hdr,
+        .data = switch (hdr.inode_type) {
+            .dir => .{
+                .dir = try .init(rdr),
+            },
+            .ext_dir => .{
+                .ext_dir = try .init(rdr, alloc),
+            },
+            .file => .{
+                .file = try .init(rdr, block_size, alloc),
+            },
+            .ext_file => .{
+                .ext_file = try .init(rdr, block_size, alloc),
+            },
+            .symlink => .{
+                .symlink = try .init(rdr, alloc),
+            },
+            .ext_symlink => .{
+                .ext_symlink = try .init(rdr, alloc),
+            },
+            .block_device => .{
+                .block_device = try rdr.readStruct(misc.DeviceInode),
+            },
+            .ext_block_device => .{
+                .ext_block_device = try rdr.readStruct(misc.ExtDeviceInode),
+            },
+            .char_device => .{
+                .char_device = try rdr.readStruct(misc.DeviceInode),
+            },
+            .ext_char_device => .{
+                .ext_char_device = try rdr.readStruct(misc.ExtDeviceInode),
+            },
+            .fifo => .{
+                .fifo = try rdr.readStruct(misc.IPCInode),
+            },
+            .ext_fifo => .{
+                .ext_fifo = try rdr.readStruct(misc.ExtIPCInode),
+            },
+            .socket => .{
+                .socket = try rdr.readStruct(misc.IPCInode),
+            },
+            .ext_socket => .{
+                .ext_socket = try rdr.readStruct(misc.ExtIPCInode),
+            },
+        },
+    };
+}