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Support non-x64 Edition ISOs.

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This commit is contained in:
kernelpanic 2023-09-24 19:35:42 -04:00
parent ce94ebd099
commit 8ef6666613
1 changed files with 24 additions and 12 deletions
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36
src/main.rs
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@ -17,6 +17,8 @@ fn main() {
let amd64_basedir = iso_mount_dir.join("amd64");
let i386_basedir = iso_mount_dir.join("i386");
let x64_edition = amd64_basedir.is_dir();
{
let mut ntdetect = File::open(amd64_basedir.join("ntdetect.com"))
.or(File::open(i386_basedir.join("ntdetect.com")))
@ -76,24 +78,34 @@ fn main() {
let rdisk0 = b"rdisk(0)".as_slice();
let win_nt_bt = b"$win_nt$.~bt".as_slice();
let win_nt_bt_caps = b"$WIN_NT$.~BT".as_slice();
let amd64_bytes = b"amd64";
let new_dir_bytes = b"i386";
let new_dir_bytes_x64 = b"amd64";
for index in 0..(bootmgr_contents.len() - win_nt_bt.len()) {
if &bootmgr_contents[index..index+rdisk0.len()] == rdisk0 {
if &bootmgr_contents[index..index + rdisk0.len()] == rdisk0 {
println!("BOOTMGR: {index:#010x} Patching rdisk(0) --> rdisk(1)");
bootmgr_contents[index+6] = 0x31;
bootmgr_contents[index + 6] = 0x31;
}
// $WIN_NT$_~BT -> i386/amd64
if &bootmgr_contents[index..index+win_nt_bt.len()] == win_nt_bt
|| &bootmgr_contents[index..index+win_nt_bt.len()] == win_nt_bt_caps {
println!("BOOTMGR: {index:#010x} Patching {:?} --> \"amd64\"", bootmgr_contents[index..index+win_nt_bt.len()].to_vec());
for i in 0..amd64_bytes.len() {
bootmgr_contents[index+i] = amd64_bytes[i];
if &bootmgr_contents[index..index + win_nt_bt.len()] == win_nt_bt
|| &bootmgr_contents[index..index + win_nt_bt.len()] == win_nt_bt_caps {
if x64_edition {
println!("BOOTMGR: {index:#010x} Patching {:?} --> \"amd64\"", bootmgr_contents[index..index + win_nt_bt.len()].to_vec());
for i in 0..new_dir_bytes_x64.len() {
bootmgr_contents[index + i] = new_dir_bytes_x64[i];
}
bootmgr_contents[index + new_dir_bytes_x64.len()] = 0;
bootmgr_contents[index + new_dir_bytes_x64.len()] = bootmgr_contents[index + win_nt_bt.len()];
bootmgr_contents[index + new_dir_bytes_x64.len() + 1] = 0;
} else {
println!("BOOTMGR: {index:#010x} Patching {:?} --> \"i386\"", bootmgr_contents[index..index + win_nt_bt.len()].to_vec());
for i in 0..new_dir_bytes.len() {
bootmgr_contents[index + i] = new_dir_bytes[i];
}
bootmgr_contents[index + new_dir_bytes.len()] = 0;
bootmgr_contents[index + new_dir_bytes.len()] = bootmgr_contents[index + win_nt_bt.len()];
bootmgr_contents[index + new_dir_bytes.len() + 1] = 0;
}
bootmgr_contents[index + amd64_bytes.len()] = 0;
bootmgr_contents[index + amd64_bytes.len()] = bootmgr_contents[index + win_nt_bt.len()];
bootmgr_contents[index + amd64_bytes.len() + 1] = 0;
}
}