Messing around with thing.

Things not working.
This commit is contained in:
Caleb Gardner
2025-05-16 15:16:46 -05:00
parent 43295fb823
commit bbf3539dcf
9 changed files with 124 additions and 30 deletions
+10 -6
View File
@@ -1,7 +1,11 @@
const std = @import("std");
const io = std.io;
pub const BlockSize = packed struct { size: u23, not_compressed: bool, _: u8 };
pub const BlockSize = packed struct {
size: u23,
not_compressed: bool,
_: u8,
};
pub const FileInode = struct {
data_start: u32,
@@ -11,8 +15,8 @@ pub const FileInode = struct {
blocks: []const BlockSize,
pub fn init(alloc: std.mem.Allocator, rdr: io.AnyReader, block_size: u32) !FileInode {
const fixed_buf = [_]u8{0} ** 16;
_ = try rdr.readAll(&fixed_buf);
var fixed_buf = [_]u8{0} ** 16;
_ = try rdr.readAll(@ptrCast(&fixed_buf));
const frag_idx = std.mem.bytesToValue(u32, fixed_buf[4..8]);
const size = std.mem.bytesToValue(u32, fixed_buf[12..16]);
var block_num = size / block_size;
@@ -20,7 +24,7 @@ pub const FileInode = struct {
block_num += 1;
}
const blocks = try alloc.alloc(BlockSize, block_num);
_ = try rdr.readAll(std.mem.asBytes(blocks));
_ = try rdr.readAll(@ptrCast(blocks));
return .{
.data_start = std.mem.bytesToValue(u32, fixed_buf[0..4]),
.frag_idx = frag_idx,
@@ -45,7 +49,7 @@ pub const ExtFileInode = struct {
blocks: []const BlockSize,
pub fn init(alloc: std.mem.Allocator, rdr: io.AnyReader, block_size: u32) !ExtFileInode {
const fixed_buf = [_]u8{0} ** 40;
var fixed_buf = [_]u8{0} ** 40;
_ = try rdr.readAll(&fixed_buf);
const size = std.mem.bytesToValue(u64, fixed_buf[8..16]);
const frag_idx = std.mem.bytesToValue(u32, fixed_buf[28..32]);
@@ -54,7 +58,7 @@ pub const ExtFileInode = struct {
block_num += 1;
}
const blocks = try alloc.alloc(BlockSize, block_num);
_ = try rdr.readAll(std.mem.asBytes(blocks));
_ = try rdr.readAll(@ptrCast(blocks));
return .{
.data_start = std.mem.bytesToValue(u64, fixed_buf[0..8]),
.size = size,