fix lot (#518)

* refact: use feature subsystem

* use 64bit feature

* fix

* add fixme

* add feature max to get_info

* use 32bit feature id

* allow root to get/set feature

* more clean perm_check functions

* fix

* add feature command to ksud

kernel: do not expose perm checker

* fix security_task_fix_setuid_handler_pre

* add android16-6.12 ci

* manager: add kernel_umount switch

Co-authored-by: YuKongA <70465933+YuKongA@users.noreply.github.com>

* manager: Reinstate the LKM selection function

* kernel: add name and print command value

- Optimise sulog log display

Co-authored-by: Ylarod <me@ylarod.cn>
Co-authored-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>

* fix

* ksud: clippy

---------

Co-authored-by: Ylarod <me@ylarod.cn>
Co-authored-by: YuKongA <70465933+YuKongA@users.noreply.github.com>
Co-authored-by: weishu <twsxtd@gmail.com>

userspace/ksud/src/cli.rs

@@ -64,6 +64,12 @@ enum Commands {
         command: Profile,
     },
 
+    /// Manage kernel features
+    Feature {
+        #[command(subcommand)]
+        command: Feature,
+    },
+
     /// Patch boot or init_boot images to apply KernelSU
     BootPatch {
         /// boot image path, if not specified, will try to find the boot image automatically
@@ -281,6 +287,32 @@ enum Profile {
     ListTemplates,
 }
 
+#[derive(clap::Subcommand, Debug)]
+enum Feature {
+    /// Get feature value and support status
+    Get {
+        /// Feature ID or name (su_compat, kernel_umount)
+        id: String,
+    },
+
+    /// Set feature value
+    Set {
+        /// Feature ID or name
+        id: String,
+        /// Feature value (0=disable, 1=enable)
+        value: u64,
+    },
+
+    /// List all available features
+    List,
+
+    /// Load configuration from file and apply to kernel
+    Load,
+
+    /// Save current kernel feature states to file
+    Save,
+}
+
 #[cfg(target_arch = "aarch64")]
 mod kpm_cmd {
     use clap::Subcommand;
@@ -368,6 +400,14 @@ pub fn run() -> Result<()> {
             Profile::ListTemplates => crate::profile::list_templates(),
         },
 
+        Commands::Feature { command } => match command {
+            Feature::Get { id } => crate::feature::get_feature(id),
+            Feature::Set { id, value } => crate::feature::set_feature(id, value),
+            Feature::List => crate::feature::list_features(),
+            Feature::Load => crate::feature::load_config_and_apply(),
+            Feature::Save => crate::feature::save_config(),
+        },
+
         Commands::Debug { command } => match command {
             Debug::SetManager { apk } => debug::set_manager(&apk),
             Debug::GetSign { apk } => {