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[skip ci]ksud: support vendor_boot patching for some odd devices (#2650)

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This will add support to patch vendor_boot with LKM for devices which
have their init ramdisk inside of vendor_boot and not boot/init_boot.

---------

Co-authored-by: Rifat Azad <rifat.44.azad.rifs@gmail.com>
Co-authored-by: 5ec1cff <ewtqyqyewtqyqy@gmail.com>
Co-authored-by: 5ec1cff <56485584+5ec1cff@users.noreply.github.com>
This commit is contained in:
ShirkNeko
2025-08-10 17:31:43 +08:00
parent 0754fc8920
commit c1c648e34d
1 changed files with 76 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files

201
userspace/ksud/src/boot_patch.rs
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@@ -153,82 +153,40 @@ fn parse_kmi_from_boot(magiskboot: &Path, image: &PathBuf, workdir: &Path) -> Re
parse_kmi_from_kernel(&image_path, workdir)
}
fn do_cpio_cmd(magiskboot: &Path, workdir: &Path, cmd: &str) -> Result<()> {
fn do_cpio_cmd(magiskboot: &Path, workdir: &Path, cpio_path: &Path, cmd: &str) -> Result<()> {
let status = Command::new(magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.arg("cpio")
.arg("ramdisk.cpio")
.arg(cpio_path)
.arg(cmd)
.status()?;
ensure!(status.success(), "magiskboot cpio {} failed", cmd);
Ok(())
}
fn do_vendor_init_boot_cpio_cmd(magiskboot: &Path, workdir: &Path, cmd: &str) -> Result<()> {
let vendor_init_boot_cpio = workdir.join("vendor_ramdisk").join("init_boot.cpio");
fn is_magisk_patched(magiskboot: &Path, workdir: &Path, cpio_path: &Path) -> Result<bool> {
let status = Command::new(magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.arg("cpio")
.arg(vendor_init_boot_cpio)
.arg(cmd)
.arg(cpio_path)
.arg("test")
.status()?;
ensure!(status.success(), "magiskboot cpio {} failed", cmd);
Ok(())
}
fn is_magisk_patched(magiskboot: &Path, workdir: &Path) -> Result<bool> {
let status = Command::new(magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.args(["cpio", "ramdisk.cpio", "test"])
.status()?;
// 0: stock, 1: magisk
Ok(status.code() == Some(1))
}
fn is_magisk_patched_vendor_init_boot(magiskboot: &Path, workdir: &Path) -> Result<bool> {
let vendor_init_boot_cpio = workdir.join("vendor_ramdisk").join("init_boot.cpio");
fn is_kernelsu_patched(magiskboot: &Path, workdir: &Path, cpio_path: &Path) -> Result<bool> {
let status = Command::new(magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.args(["cpio", vendor_init_boot_cpio.to_str().unwrap(), "test"])
.status()?;
// 0: stock, 1: magisk
Ok(status.code() == Some(1))
}
fn is_kernelsu_patched(magiskboot: &Path, workdir: &Path) -> Result<bool> {
let status = Command::new(magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.args(["cpio", "ramdisk.cpio", "exists kernelsu.ko"])
.status()?;
Ok(status.success())
}
fn is_kernelsu_patched_vendor_init_boot(magiskboot: &Path, workdir: &Path) -> Result<bool> {
let vendor_ramdisk_cpio = workdir.join("vendor_ramdisk").join("init_boot.cpio");
let status = Command::new(magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.args([
"cpio",
vendor_ramdisk_cpio.to_str().unwrap(),
"exists kernelsu.ko",
])
.arg("cpio")
.arg(cpio_path)
.arg("exists kernelsu.ko")
.status()?;
Ok(status.success())
@@ -278,24 +236,37 @@ pub fn restore(
.status()?;
ensure!(status.success(), "magiskboot unpack failed");
let no_ramdisk = !workdir.join("ramdisk.cpio").exists();
let is_kernelsu_patched = is_kernelsu_patched(&magiskboot, workdir)?;
let is_kernelsu_patched_vendor_init_boot =
is_kernelsu_patched_vendor_init_boot(&magiskboot, workdir)?;
ensure!(
is_kernelsu_patched || is_kernelsu_patched_vendor_init_boot,
"boot image is not patched by KernelSU"
);
let mut ramdisk = workdir.join("ramdisk.cpio");
if !ramdisk.exists() {
ramdisk = workdir.join("vendor_ramdisk").join("init_boot.cpio")
}
if !ramdisk.exists() {
ramdisk = workdir.join("vendor_ramdisk").join("ramdisk.cpio");
}
if !ramdisk.exists() {
bail!("No compatible ramdisk found.")
}
let ramdisk = ramdisk.as_path();
let is_kernelsu_patched = is_kernelsu_patched(&magiskboot, workdir, ramdisk)?;
ensure!(is_kernelsu_patched, "boot image is not patched by KernelSU");
let mut new_boot = None;
let mut from_backup = false;
#[cfg(target_os = "android")]
if do_cpio_cmd(&magiskboot, workdir, &format!("exists {BACKUP_FILENAME}")).is_ok() {
if do_cpio_cmd(
&magiskboot,
workdir,
ramdisk,
&format!("exists {BACKUP_FILENAME}"),
)
.is_ok()
{
do_cpio_cmd(
&magiskboot,
workdir,
&format!("extract {0} {0}", BACKUP_FILENAME),
ramdisk,
&format!("extract {BACKUP_FILENAME} {BACKUP_FILENAME}"),
)?;
let sha = std::fs::read(workdir.join(BACKUP_FILENAME))?;
let sha = String::from_utf8(sha)?;
@@ -317,29 +288,13 @@ pub fn restore(
}
if new_boot.is_none() {
if no_ramdisk {
// vendor init_boot restore
do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "rm kernelsu.ko")?;
// if init.real exists, restore it
let status =
do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "exists init.real").is_ok();
if status {
do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "mv init.real init")?;
} else {
let vendor_init_boot = workdir.join("vendor_ramdisk").join("init_boot.cpio");
std::fs::remove_file(vendor_init_boot)?;
}
} else {
// remove kernelsu.ko
do_cpio_cmd(&magiskboot, workdir, "rm kernelsu.ko")?;
do_cpio_cmd(&magiskboot, workdir, ramdisk, "rm kernelsu.ko")?;
// if init.real exists, restore it
let status = do_cpio_cmd(&magiskboot, workdir, "exists init.real").is_ok();
let status = do_cpio_cmd(&magiskboot, workdir, ramdisk, "exists init.real").is_ok();
if status {
do_cpio_cmd(&magiskboot, workdir, "mv init.real init")?;
} else {
let ramdisk = workdir.join("ramdisk.cpio");
std::fs::remove_file(ramdisk)?;
}
do_cpio_cmd(&magiskboot, workdir, ramdisk, "mv init.real init")?;
}
println!("- Repacking boot image");
@@ -348,7 +303,7 @@ pub fn restore(
.stdout(Stdio::null())
.stderr(Stdio::null())
.arg("repack")
.arg(bootimage.display().to_string())
.arg(&bootimage)
.status()?;
ensure!(status.success(), "magiskboot repack failed");
new_boot = Some(workdir.join("new-boot.img"));
@@ -447,7 +402,7 @@ fn do_patch(
match get_current_kmi() {
Ok(value) => value,
Err(e) => {
println!("- {}", e);
println!("- {e}");
if let Some(image_path) = &image {
println!(
"- Trying to auto detect KMI version for {}",
@@ -472,7 +427,7 @@ fn do_patch(
let (bootimage, bootdevice) =
find_boot_image(&image, skip_init, ota, is_replace_kernel, workdir)?;
let bootimage = bootimage.display().to_string();
let bootimage = bootimage.as_path();
// try extract magiskboot/bootctl
let _ = assets::ensure_binaries(false);
@@ -501,71 +456,54 @@ fn do_patch(
assets::copy_assets_to_file("ksuinit", init_file).context("copy ksuinit failed")?;
}
// magiskboot unpack boot.img
// magiskboot cpio ramdisk.cpio 'cp init init.real'
// magiskboot cpio ramdisk.cpio 'add 0755 ksuinit init'
// magiskboot cpio ramdisk.cpio 'add 0755 <kmod> kernelsu.ko'
println!("- Unpacking boot image");
let status = Command::new(&magiskboot)
.current_dir(workdir)
.stdout(Stdio::null())
.stderr(Stdio::null())
.arg("unpack")
.arg(&bootimage)
.arg(bootimage)
.status()?;
ensure!(status.success(), "magiskboot unpack failed");
let no_ramdisk = !workdir.join("ramdisk.cpio").exists();
let no_vendor_init_boot = !workdir
.join("vendor_ramdisk")
.join("init_boot.cpio")
.exists();
if no_ramdisk && no_vendor_init_boot {
let mut ramdisk = workdir.join("ramdisk.cpio");
if !ramdisk.exists() {
ramdisk = workdir.join("vendor_ramdisk").join("init_boot.cpio")
}
if !ramdisk.exists() {
ramdisk = workdir.join("vendor_ramdisk").join("ramdisk.cpio");
}
if !ramdisk.exists() {
bail!("No compatible ramdisk found.");
}
let is_magisk_patched = is_magisk_patched(&magiskboot, workdir)?;
let is_magisk_patched_vendor_init_boot =
is_magisk_patched_vendor_init_boot(&magiskboot, workdir)?;
ensure!(
!is_magisk_patched || !is_magisk_patched_vendor_init_boot,
"Cannot work with Magisk patched image"
);
let ramdisk = ramdisk.as_path();
let is_magisk_patched = is_magisk_patched(&magiskboot, workdir, ramdisk)?;
ensure!(!is_magisk_patched, "Cannot work with Magisk patched image");
println!("- Adding KernelSU LKM");
let is_kernelsu_patched = is_kernelsu_patched(&magiskboot, workdir)?;
let is_kernelsu_patched_vendor_init_boot =
is_kernelsu_patched_vendor_init_boot(&magiskboot, workdir)?;
let is_kernelsu_patched = is_kernelsu_patched(&magiskboot, workdir, ramdisk)?;
let mut need_backup = false;
if !is_kernelsu_patched || (no_ramdisk && !is_kernelsu_patched_vendor_init_boot) {
if no_ramdisk {
// vendor init_boot patching
let status = do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "exists init");
if status.is_ok() {
do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "mv init init.real")?;
}
} else {
if !is_kernelsu_patched {
// kernelsu.ko is not exist, backup init if necessary
let status = do_cpio_cmd(&magiskboot, workdir, "exists init");
let status = do_cpio_cmd(&magiskboot, workdir, ramdisk, "exists init");
if status.is_ok() {
do_cpio_cmd(&magiskboot, workdir, "mv init init.real")?;
do_cpio_cmd(&magiskboot, workdir, ramdisk, "mv init init.real")?;
}
need_backup = flash;
}
}
if no_ramdisk {
do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "add 0755 init init")?;
do_vendor_init_boot_cpio_cmd(&magiskboot, workdir, "add 0755 kernelsu.ko kernelsu.ko")?;
} else {
do_cpio_cmd(&magiskboot, workdir, "add 0755 init init")?;
do_cpio_cmd(&magiskboot, workdir, "add 0755 kernelsu.ko kernelsu.ko")?;
}
do_cpio_cmd(&magiskboot, workdir, ramdisk, "add 0755 init init")?;
do_cpio_cmd(
&magiskboot,
workdir,
ramdisk,
"add 0755 kernelsu.ko kernelsu.ko",
)?;
#[cfg(target_os = "android")]
if need_backup {
if let Err(e) = do_backup(&magiskboot, workdir, &bootimage) {
if let Err(e) = do_backup(&magiskboot, workdir, ramdisk, bootimage) {
println!("- Backup stock image failed: {e}");
}
}
@@ -577,7 +515,7 @@ fn do_patch(
.stdout(Stdio::null())
.stderr(Stdio::null())
.arg("repack")
.arg(&bootimage)
.arg(bootimage)
.status()?;
ensure!(status.success(), "magiskboot repack failed");
let new_boot = workdir.join("new-boot.img");
@@ -587,7 +525,7 @@ fn do_patch(
let output_dir = out.unwrap_or(std::env::current_dir()?);
let now = chrono::Utc::now();
let output_image = output_dir.join(format!(
"SukiSU_patched_{}.img",
"kernelsu_patched_{}.img",
now.format("%Y%m%d_%H%M%S")
));
@@ -628,11 +566,11 @@ fn calculate_sha1(file_path: impl AsRef<Path>) -> Result<String> {
}
let result = hasher.finalize();
Ok(format!("{:x}", result))
Ok(format!("{result:x}"))
}
#[cfg(target_os = "android")]
fn do_backup(magiskboot: &Path, workdir: &Path, image: &str) -> Result<()> {
fn do_backup(magiskboot: &Path, workdir: &Path, cpio_path: &Path, image: &Path) -> Result<()> {
let sha1 = calculate_sha1(image)?;
let filename = format!("{KSU_BACKUP_FILE_PREFIX}{sha1}");
@@ -644,7 +582,8 @@ fn do_backup(magiskboot: &Path, workdir: &Path, image: &str) -> Result<()> {
do_cpio_cmd(
magiskboot,
workdir,
&format!("add 0755 {0} {0}", BACKUP_FILENAME),
cpio_path,
&format!("add 0755 {BACKUP_FILENAME} {BACKUP_FILENAME}"),
)?;
println!("- Stock image has been backup to");
println!("- {target}");
@@ -654,7 +593,7 @@ fn do_backup(magiskboot: &Path, workdir: &Path, image: &str) -> Result<()> {
#[cfg(target_os = "android")]
fn clean_backup(sha1: &str) -> Result<()> {
println!("- Clean up backup");
let backup_name = format!("{}{}", KSU_BACKUP_FILE_PREFIX, sha1);
let backup_name = format!("{KSU_BACKUP_FILE_PREFIX}{sha1}");
let dir = std::fs::read_dir(defs::KSU_BACKUP_DIR)?;
for entry in dir.flatten() {
let path = entry.path();