userspace: add susfs lib

manager: completed susfs support check prctl syscall

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

@@ -10,23 +10,6 @@
 #define LOG_TAG "KernelSU-Next"
 #define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__)
 
-// TODO: Try fixing Prctl method to get CMD_SUSFS_SHOW_VERSION 0x555e1
-extern "C"
-JNIEXPORT jstring JNICALL
-Java_com_rifsxd_ksunext_Natives_getSusfsVersion(JNIEnv *env, jobject) {
-    int error = -1;
-    char susfsVersion[16];
-    
-    error = prctl(KERNEL_SU_OPTION, CMD_SUSFS_SHOW_VERSION, susfsVersion, NULL, &error);
-    if (!error) {
-        return env->NewStringUTF(susfsVersion);
-        LOGD("susfs: found");
-    } else {
-        LOGD("susfs: not foung");
-        return env->NewStringUTF("Error fetching version");
-    }
-}
-
 extern "C"
 JNIEXPORT jboolean JNICALL
 Java_com_rifsxd_ksunext_Natives_becomeManager(JNIEnv *env, jobject, jstring pkg) {

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

@@ -10,6 +10,8 @@
 
 #include "ksu.h"
 
+#define KERNEL_SU_OPTION 0xDEADBEEF
+
 #define CMD_GRANT_ROOT 0
 
 #define CMD_BECOME_MANAGER 1

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

@@ -7,10 +7,6 @@
 
 #include <linux/capability.h>
 
-#define KERNEL_SU_OPTION 0xDEADBEEF
-
-#define CMD_SUSFS_SHOW_VERSION 0x555e1
-
 bool become_manager(const char *);
 
 int get_version();