kernel: Rewrite the kernel source code (#554)

* clean unused header

* on_module_mounted in ksud.c

* refact: use app_profile

* unified hook manager

* add zygote to hook target

* move reboot hook to supercall.c

* refactor: kernel_umount setuid_hook

* update mark rules, add init mark tracker

* remove reboot from check_syscall_fastpath

* update setuid_hook, remove uneeded sucompat enable

* log freely

* kernel: Migrate kprobe hook configuration items

* kernel: fix build

* cli: add ksud debug mark

* Fix rustfmt warning

---------

Co-authored-by: Ylarod <me@ylarod.cn>
Co-authored-by: Wang Han <416810799@qq.com>
Co-authored-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>

userspace/ksud/src/cli.rs

@@ -188,6 +188,39 @@ enum Debug {
 
     /// For testing
     Test,
+
+    /// Process mark management
+    Mark {
+        #[command(subcommand)]
+        command: MarkCommand,
+    },
+}
+
+#[derive(clap::Subcommand, Debug)]
+enum MarkCommand {
+    /// Get mark status for a process (or all)
+    Get {
+        /// target pid (0 for total count)
+        #[arg(default_value = "0")]
+        pid: i32,
+    },
+
+    /// Mark a process
+    Mark {
+        /// target pid (0 for all processes)
+        #[arg(default_value = "0")]
+        pid: i32,
+    },
+
+    /// Unmark a process
+    Unmark {
+        /// target pid (0 for all processes)
+        #[arg(default_value = "0")]
+        pid: i32,
+    },
+
+    /// Refresh mark for all running processes
+    Refresh,
 }
 
 #[derive(clap::Subcommand, Debug)]
@@ -473,6 +506,12 @@ pub fn run() -> Result<()> {
             Debug::Su { global_mnt } => crate::su::grant_root(global_mnt),
             Debug::Mount => init_event::mount_modules_systemlessly(),
             Debug::Test => assets::ensure_binaries(false),
+            Debug::Mark { command } => match command {
+                MarkCommand::Get { pid } => debug::mark_get(pid),
+                MarkCommand::Mark { pid } => debug::mark_set(pid),
+                MarkCommand::Unmark { pid } => debug::mark_unset(pid),
+                MarkCommand::Refresh => debug::mark_refresh(),
+            },
         },
 
         Commands::BootPatch {