kernel: Rewrite kernle version code management

Co-authored-by: lamadaemon <i@lama.icu>
Signed-off-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>

manager/app/src/main/cpp/jni.c

@@ -345,4 +345,10 @@ NativeBridgeNP(getSusfsFeatureStatus, jobject) {
     GetEnvironment()->SetBooleanField(env, obj, statusSusSuField, status.status_sus_su);
 
     return obj;
+}
+
+NativeBridgeNP(getFullVersion, jstring) {
+    char buff[255] = { 0 };
+    get_full_version((char *) &buff);
+    return GetEnvironment()->NewStringUTF(env, buff);
 }

manager/app/src/main/cpp/ksu.c

@@ -30,6 +30,9 @@
 #define CMD_IS_UID_SHOULD_UMOUNT 13
 #define CMD_IS_SU_ENABLED 14
 #define CMD_ENABLE_SU 15
+
+#define CMD_GET_VERSION_FULL 30
+
 #define CMD_ENABLE_KPM 100
 #define CMD_HOOK_TYPE 101
 #define CMD_GET_SUSFS_FEATURE_STATUS 102
@@ -60,12 +63,16 @@ int get_version() {
     int32_t version = -1;
     int32_t lkm = 0;
     ksuctl(CMD_GET_VERSION, &version, &lkm);
-    if (!is_lkm && lkm != 0) {
+    if (!is_lkm && lkm == 1) {
         is_lkm = true;
     }
     return version;
 }
 
+void get_full_version(char* buff) {
+    ksuctl(CMD_GET_VERSION_FULL, buff, NULL);
+}
+
 bool get_allow_list(int *uids, int *size) {
     return ksuctl(CMD_GET_SU_LIST, uids, size);
 }

manager/app/src/main/cpp/ksu.h

@@ -10,6 +10,8 @@
 
 bool become_manager(const char *);
 
+void get_full_version(char* buff);
+
 int get_version();
 
 bool get_allow_list(int *uids, int *size);