Add magiskboot to kernelsu working directory (#1684)

Add the magiskboot binary to the /data/adb/ksu/bin directory so that
scripts/programs can call magiskboot to patch the boot/init_boot image.

---------

Co-authored-by: weishu <twsxtd@gmail.com>

manager/app/src/main/java/me/weishu/kernelsu/ui/util/KsuCli.kt

@@ -84,7 +84,8 @@ fun execKsud(args: String, newShell: Boolean = false): Boolean {
 
 fun install() {
     val start = SystemClock.elapsedRealtime()
-    val result = execKsud("install", true)
+    val magiskboot = File(ksuApp.applicationInfo.nativeLibraryDir, "libmagiskboot.so").absolutePath
+    val result = execKsud("install --magiskboot $magiskboot", true)
     Log.w(TAG, "install result: $result, cost: ${SystemClock.elapsedRealtime() - start}ms")
 }
 

userspace/ksud/src/cli.rs

@@ -35,7 +35,10 @@ enum Commands {
     BootCompleted,
 
     /// Install KernelSU userspace component to system
-    Install,
+    Install {
+        #[arg(long, default_value = None)]
+        magiskboot: Option<PathBuf>,
+    },
 
     /// Uninstall KernelSU modules and itself(LKM Only)
     Uninstall {
@@ -307,7 +310,7 @@ pub fn run() -> Result<()> {
                 Module::Shrink => module::shrink_ksu_images(),
             }
         }
-        Commands::Install => utils::install(),
+        Commands::Install { magiskboot } => utils::install(magiskboot),
         Commands::Uninstall { magiskboot } => utils::uninstall(magiskboot),
         Commands::Sepolicy { command } => match command {
             Sepolicy::Patch { sepolicy } => crate::sepolicy::live_patch(&sepolicy),

userspace/ksud/src/defs.rs

@@ -12,6 +12,7 @@ pub const PROFILE_TEMPLATE_DIR: &str = concatcp!(PROFILE_DIR, "templates/");
 pub const KSURC_PATH: &str = concatcp!(WORKING_DIR, ".ksurc");
 pub const KSU_OVERLAY_SOURCE: &str = "KSU";
 pub const DAEMON_PATH: &str = concatcp!(ADB_DIR, "ksud");
+pub const MAGISKBOOT_PATH: &str = concatcp!(BINARY_DIR, "magiskboot");
 
 #[cfg(target_os = "android")]
 pub const DAEMON_LINK_PATH: &str = concatcp!(BINARY_DIR, "ksud");

userspace/ksud/src/utils.rs

@@ -208,7 +208,7 @@ fn link_ksud_to_bin() -> Result<()> {
     Ok(())
 }
 
-pub fn install() -> Result<()> {
+pub fn install(magiskboot: Option<PathBuf>) -> Result<()> {
     ensure_dir_exists(defs::ADB_DIR)?;
     std::fs::copy("/proc/self/exe", defs::DAEMON_PATH)?;
     restorecon::lsetfilecon(defs::DAEMON_PATH, restorecon::ADB_CON)?;
@@ -218,6 +218,11 @@ pub fn install() -> Result<()> {
     #[cfg(target_os = "android")]
     link_ksud_to_bin()?;
 
+    if let Some(magiskboot) = magiskboot {
+        ensure_dir_exists(defs::BINARY_DIR)?;
+        let _ = std::fs::copy(magiskboot, defs::MAGISKBOOT_PATH);
+    }
+
     Ok(())
 }