Add kpmmgr to build the workflow and related source files

.github/workflows/kpmmgr.yml

@@ -0,0 +1,40 @@
+name: Build kpmmgr
+
+on:
+  push:
+    branches: [ "mian" ]
+    paths:
+      - '.github/workflows/kpmmgr.yml'
+      - 'userspace/kpmmgr/**'
+  workflow_dispatch:
+  workflow_call:
+    inputs:
+      target:
+        required: true
+        type: string
+      os:
+        required: false
+        type: string
+        default: self-hosted
+
+jobs:
+  build-susfs:
+    name: Build userspace kpmmgr
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Build kpmmgr
+        working-directory: ./userspace/kpmmgr
+        run: |
+          $ANDROID_NDK_HOME/ndk-build
+
+      - name: Upload a Build Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: kpmmgr-aarch64-linux-android
+          path: ./userspace/kpmmgr/libs

userspace/kpmmgr/.gitignore

@@ -0,0 +1,2 @@
+/obj
+/libs

userspace/kpmmgr/jni/Android.mk

@@ -0,0 +1,6 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := kpmmgr
+LOCAL_SRC_FILES := kpmmgr.c
+include $(BUILD_EXECUTABLE)

userspace/kpmmgr/jni/Application.mk

@@ -0,0 +1,3 @@
+APP_ABI := arm64-v8a x86_64
+APP_PLATFORM := android-24
+APP_STL := none

userspace/kpmmgr/jni/kpmmgr.c

@@ -0,0 +1,86 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/prctl.h>
+#include <string.h>
+#include <errno.h>
+
+#define KSU_OPTIONS 0xdeadbeef
+
+// KPM控制代码
+#define CMD_KPM_CONTROL 28
+#define CMD_KPM_CONTROL_MAX 7
+
+// 控制代码
+#define SUKISU_KPM_LOAD 1
+#define SUKISU_KPM_UNLOAD 2
+#define SUKISU_KPM_NUM 3
+#define SUKISU_KPM_LIST 4
+#define SUKISU_KPM_INFO 5
+#define SUKISU_KPM_CONTROL 6
+#define SUKISU_KPM_PRINT 7
+
+#define CONTROL_CODE(n) (CMD_KPM_CONTROL + n)
+
+void print_usage(const char *prog) {
+    printf("Usage: %s <command> [args]\n", prog);
+    printf("Commands:\n");
+    printf("  load <path> <args>    Load a KPM module\n");
+    printf("  unload <name>         Unload a KPM module\n");
+    printf("  num                   Get number of loaded modules\n");
+    printf("  list                  List loaded KPM modules\n");
+    printf("  info <name>           Get info of a KPM module\n");
+    printf("  control <name> <args> Send control command to a KPM module\n");
+    printf("  print                 Print KPM module list to stdout\n");
+}
+
+int main(int argc, char *argv[]) {
+    if (argc < 2) {
+        print_usage(argv[0]);
+        return 1;
+    }
+
+    int ret = -1;
+    int out = 0;  // 存储返回值
+
+    if (strcmp(argv[1], "load") == 0 && argc >= 3) {
+        // 加载 KPM 模块
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_LOAD), argv[2], (argc > 3 ? argv[3] : NULL), &out);
+    } else if (strcmp(argv[1], "unload") == 0 && argc >= 3) {
+        // 卸载 KPM 模块
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_UNLOAD), argv[2], &out);
+    } else if (strcmp(argv[1], "num") == 0) {
+        // 获取加载的 KPM 数量
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_NUM), &out);
+    } else if (strcmp(argv[1], "list") == 0) {
+        // 获取模块列表
+        char buffer[1024] = {0};
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_LIST), buffer, sizeof(buffer), &out);
+        if (ret >= 0) {
+            printf("%s", buffer);
+        }
+    } else if (strcmp(argv[1], "info") == 0 && argc >= 3) {
+        // 获取指定模块信息
+        char buffer[256] = {0};
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_INFO), argv[2], buffer, &out);
+        if (ret >= 0) {
+            printf("%s\n", buffer);
+        }
+    } else if (strcmp(argv[1], "control") == 0 && argc >= 4) {
+        // 控制 KPM 模块
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_CONTROL), argv[2], argv[3], &out);
+    } else if (strcmp(argv[1], "print") == 0) {
+        // 在 stdout 输出 KPM 列表
+        ret = prctl(KSU_OPTIONS, CONTROL_CODE(SUKISU_KPM_PRINT), &out);
+    } else {
+        print_usage(argv[0]);
+        return 1;
+    }
+
+    if (ret < 0) {
+        printf("Error: %s\n", strerror(errno));
+        return -1;
+    }
+
+    return 0;
+}