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ksud: Fix debug set manager

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This commit is contained in:
weishu
2024-03-27 18:13:36 +08:00
parent 9ffdd171f6
commit eb5b36f138
1 changed files with 18 additions and 31 deletions
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49
userspace/ksud/src/debug.rs
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@@ -4,8 +4,6 @@ use std::{
process::Command,
};
use crate::apk_sign::get_apk_signature;
const KERNEL_PARAM_PATH: &str = "/sys/module/kernelsu";
fn read_u32(path: &PathBuf) -> Result<u32> {
@@ -15,38 +13,26 @@ fn read_u32(path: &PathBuf) -> Result<u32> {
Ok(content)
}
fn set_kernel_param(size: u32, hash: String) -> Result<()> {
fn set_kernel_param(uid: u32) -> Result<()> {
let kernel_param_path = Path::new(KERNEL_PARAM_PATH).join("parameters");
let expeced_size_path = kernel_param_path.join("ksu_expected_size");
let expeced_hash_path = kernel_param_path.join("ksu_expected_hash");
let ksu_debug_manager_uid = kernel_param_path.join("ksu_debug_manager_uid");
let before_uid = read_u32(&ksu_debug_manager_uid)?;
std::fs::write(&ksu_debug_manager_uid, uid.to_string())?;
let after_uid = read_u32(&ksu_debug_manager_uid)?;
print!(
"before size: {:#x} hash: {}",
read_u32(&expeced_size_path)?,
std::fs::read_to_string(&expeced_hash_path)?
);
std::fs::write(&expeced_size_path, size.to_string())?;
std::fs::write(&expeced_hash_path, hash)?;
print!(
"after size: {:#x} hash: {}",
read_u32(&expeced_size_path)?,
std::fs::read_to_string(&expeced_hash_path)?
);
println!("set manager uid: {before_uid} -> {after_uid}");
Ok(())
}
fn get_apk_path(package_name: &str) -> Result<String> {
// `cmd package path` is not available below Android 9
let output = Command::new("pm").args(["path", package_name]).output()?;
// package:/data/app/<xxxx>/base.apk
let output = String::from_utf8_lossy(&output.stdout);
let path = output.trim().replace("package:", "");
Ok(path)
#[cfg(target_os = "android")]
fn get_pkg_uid(pkg: &str) -> Result<u32> {
// stat /data/data/<pkg>
let uid = rustix::fs::stat(format!("/data/data/{pkg}"))
.with_context(|| format!("stat /data/data/{}", pkg))?
.st_uid;
Ok(uid)
}
pub fn set_manager(pkg: &str) -> Result<()> {
@@ -55,10 +41,11 @@ pub fn set_manager(pkg: &str) -> Result<()> {
"CONFIG_KSU_DEBUG is not enabled"
);
let path = get_apk_path(pkg).with_context(|| format!("{pkg} does not exist!"))?;
let sign = get_apk_signature(&path)?;
set_kernel_param(sign.0, sign.1)?;
#[cfg(target_os = "android")]
let uid = get_pkg_uid(pkg)?;
#[cfg(not(target_os = "android"))]
let uid = 0;
set_kernel_param(uid)?;
// force-stop it
let _ = Command::new("am").args(["force-stop", pkg]).status();
Ok(())