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userspace: add susfs lib

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manager: completed susfs support check prctl syscall
This commit is contained in:
Rifat Azad
2024-12-22 08:49:45 +06:00
parent 74ddca2e11
commit 3febc5ae79
11 changed files with 76 additions and 52 deletions
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17
manager/app/src/main/cpp/jni.cc
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@@ -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) {

2
manager/app/src/main/cpp/ksu.cc
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@@ -10,6 +10,8 @@
#include "ksu.h"
#define KERNEL_SU_OPTION 0xDEADBEEF
#define CMD_GRANT_ROOT 0
#define CMD_BECOME_MANAGER 1

4
manager/app/src/main/cpp/ksu.h
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@@ -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();

2
manager/app/src/main/java/com/rifsxd/ksunext/Natives.kt
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@@ -30,8 +30,6 @@ object Natives {
System.loadLibrary("kernelsu")
}
external fun getSusfsVersion(): String
// become root manager, return true if success.
external fun becomeManager(pkg: String?): Boolean
val version: Int

14
manager/app/src/main/java/com/rifsxd/ksunext/ui/screen/Home.kt
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@@ -268,14 +268,10 @@ private fun StatusCard(
style = MaterialTheme.typography.bodyMedium
)
Spacer(Modifier.height(4.dp))
val suSFS = getSuSFS()
if (suSFS != "Unsupported") {
Text(
text = stringResource(R.string.home_susfs, suSFS),
style = MaterialTheme.typography.bodyMedium
)
}
Text(
text = stringResource(R.string.home_susfs, getSuSFS()),
style = MaterialTheme.typography.bodyMedium
)
}
}
@@ -405,7 +401,6 @@ private fun InfoCard() {
)
Spacer(Modifier.height(16.dp))
val suSFS = getSuSFS()
if (suSFS != "Unsupported") {
InfoCardItem(
@@ -414,7 +409,6 @@ private fun InfoCard() {
icon = Icons.Filled.SettingsSuggest,
)
}
}
}
}

32
manager/app/src/main/java/com/rifsxd/ksunext/ui/util/KsuCli.kt
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@@ -120,28 +120,22 @@ fun getModuleCount(): Int {
}.getOrElse { return 0 }
}
// TODO: Try fixing Prctl method to get CMD_SUSFS_SHOW_VERSION 0x555e1
fun getSuSFS(): String {
return try {
val sus_version = Natives.getSusfsVersion()
if (sus_version.startsWith("v")) {
"Supported"
} else {
"Unsupported"
}
} catch (e: Exception) {
"Error: ${e.message}"
}
private fun getSuSFSPath(): String {
return ksuApp.applicationInfo.nativeLibraryDir + File.separator + "libsusfs.so"
}
fun getSuSFS(): String {
val shell = getRootShell()
val result = ShellUtils.fastCmd(shell, "${getSuSFSPath()} support")
return result
}
// TODO: Try fixing Prctl method to get CMD_SUSFS_SHOW_VERSION 0x555e1
fun getSuSFSVersion(): String {
return try {
val sus_version = Natives.getSusfsVersion()
sus_version ?: "Unknown version"
} catch (e: Exception) {
"Error: ${e.message}"
}
val shell = getRootShell()
val result = ShellUtils.fastCmd(shell, "${getSuSFSPath()} version")
return result
}
fun getSuperuserCount(): Int {

BIN
manager/app/src/main/jniLibs/arm64-v8a/libsusfs.so Executable file
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Binary file not shown.

2
userspace/susfs/.gitignore vendored Normal file
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@@ -0,0 +1,2 @@
/obj
/libs

6
userspace/susfs/jni/Android.mk Normal file
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@@ -0,0 +1,6 @@
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := susfs
LOCAL_SRC_FILES := susfs.c
include $(BUILD_EXECUTABLE)

3
userspace/susfs/jni/Application.mk Normal file
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@@ -0,0 +1,3 @@
APP_ABI := arm64-v8a x86_64
APP_PLATFORM := android-24
APP_STL := none

46
userspace/susfs/jni/susfs.c Normal file
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@@ -0,0 +1,46 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#define KERNEL_SU_OPTION 0xDEADBEEF
#define CMD_SUSFS_SHOW_VERSION 0x555e1
int main(int argc, char *argv[]) {
int error = -1;
char version[16];
// Check for arguments
if (argc < 2) {
fprintf(stderr, "Usage: %s <version|support>\n", argv[0]);
return 1;
}
// If 'version' is given, show version
if (strcmp(argv[1], "version") == 0) {
prctl(KERNEL_SU_OPTION, CMD_SUSFS_SHOW_VERSION, version, NULL, &error);
if (!error) {
printf("%s\n", version);
} else {
fprintf(stderr, "Failed to retrieve version\n");
}
}
// If 'support' is given, check if version starts with 'v'
else if (strcmp(argv[1], "support") == 0) {
prctl(KERNEL_SU_OPTION, CMD_SUSFS_SHOW_VERSION, version, NULL, &error);
if (!error) {
if (version[0] == 'v') {
printf("Supported\n");
} else {
printf("Unsupported\n");
}
} else {
fprintf(stderr, "Failed to retrieve version\n");
}
} else {
fprintf(stderr, "Invalid argument: %s\n", argv[1]);
return 1;
}
return 0;
}