Initial commit.

.gitignore

@@ -2,40 +2,5 @@
 *.d
 
 # Compiled Object files
-*.slo
-*.lo
 *.o
-*.obj
+*.zip
-
-# Precompiled Headers
-*.gch
-*.pch
-
-# Linker files
-*.ilk
-
-# Debugger Files
-*.pdb
-
-# Compiled Dynamic libraries
-*.so
-*.dylib
-*.dll
-
-# Fortran module files
-*.mod
-*.smod
-
-# Compiled Static libraries
-*.lai
-*.la
-*.a
-*.lib
-
-# Executables
-*.exe
-*.out
-*.app
-
-# debug information files
-*.dwo

CMakeLists.txt

@@ -0,0 +1,20 @@
+#  Copyright 2025 Yağız Zengin
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+cmake_minimum_required(VERSION 3.10)
+project(disable_watchdog VERSION 1.0)
+
+add_executable(disable_watchdog disable_watchdog.cpp)
+target_link_libraries(disable_watchdog PRIVATE log)

build.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+#
+#  Copyright 2025 Yağız Zengin
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+
+#	  http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+set -e
+
+BUILD_64="build_arm64-v8a"
+BUILD_32="build_armeabi-v7a"
+THIS="$(basename $0)"
+
+echo()
+{
+	command echo "[$THIS]: $@"
+}
+
+checks()
+{
+	if [ -z "$ANDROID_NDK" ]; then
+		echo "Please set ANDROID_NDK variable as your NDK path."
+		exit 1
+	fi
+	if [ ! -f /usr/bin/cmake ] && [ ! -f /bin/cmake ]; then
+		echo "Please verify your CMake installation."
+		exit 1
+	fi
+}
+
+clean()
+{
+	echo "Cleaning workspace."
+	rm -rf $BUILD_32 $BUILD_64
+}
+
+build()
+{
+	mkdir -p $BUILD_64 $BUILD_32
+	command echo -e "BUILD INFO:
+	ARCHS: arm64-v8a armeabi-v7a
+	ANDROID_PLATFORM: android-21 (android 5.0)
+	ANDROID_TOOLCHAIN_FILE: $ANDROID_NDK/build/cmake/android.toolchain.cmake\n"
+
+	echo "Configuring for arm64-v8a..."
+	cmake -B $BUILD_64 -S . \
+		-DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake \
+		-DANDROID_ABI=arm64-v8a \
+		-DANDROID_PLATFORM=android-21
+
+	echo "Configuring for armeabi-v7a..."
+	cmake -B $BUILD_32 -S . \
+		-DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake \
+		-DANDROID_ABI=armeabi-v7a \
+		-DANDROID_PLATFORM=android-21
+
+	echo "Building arm64-v8a artifacts..."
+	cmake --build $BUILD_64
+	echo "arm64-v8a build complete, artifacts: $PWD/$BUILD_64"
+
+	echo "Building armeabi-v7a artifacts..."
+	cmake --build $BUILD_32
+	echo "armeabi-v7a build complete, artifacts: $PWD/$BUILD_32"
+}
+
+if [ $# -eq 0 ]; then
+	command echo "Usage: $0 build|rebuild|clean"
+	exit 1
+fi
+
+case $1 in
+	"build")	checks; build ;;
+	"clean")	clean ;;
+	"rebuild")	clean; checks; build ;;
+	*)
+		command echo "$0: Unknown argument: $1"
+		exit 1 ;;
+esac

disable_watchdog.cpp

@@ -0,0 +1,77 @@
+/*
+   Copyright 2025 Yağız Zengin
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+	   http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <iostream>
+#include <list>
+
+#define LOG_TAG "disable_watchdog"
+#include <android/log.h>
+#include <android/log_macros.h>
+
+bool suspendWatchdog(std::list<const char*> files)
+{
+	bool suspendOk = false;
+
+	for (const auto& file : files) {
+		int fd = open(file, O_WRONLY);
+		if (fd == -1) {
+			if (errno == ENOENT) {
+				int last = errno;
+				fd = open(file, O_WRONLY | O_CREAT, 644);
+				if (fd == -1) {
+					ALOGW("Cannot create %s: %s\n", file, strerror(errno));
+					continue;
+				}
+			} else {
+				ALOGW("Cannot open %s: %s\n", file, strerror(errno));
+				continue;
+			}
+		}
+
+		char ch = 'V';
+		if (write(fd, &ch, 1) != 1) {
+			ALOGW("Cannot write %s: %s\n", file, strerror(errno));
+			close(fd);
+			continue;
+		}
+
+		suspendOk = true;
+		ALOGI("%s: successfully suspended.\n", file);
+		close(fd);
+	}
+
+	return suspendOk;
+}
+
+int main(void)
+{
+	ALOGI("Service started.\n");
+
+	while (1) {
+		if (!suspendWatchdog({"/dev/watchdog1", "/dev/watchdog0", "/dev/watchdog"})) {
+			ALOGE("watchdog suspend fail!\n");
+			break;
+		}
+		sleep(8);
+	}
+
+	ALOGI("Service stopped!\n");
+	return 1;
+}

mkmod.sh

@@ -0,0 +1,109 @@
+#!/bin/bash
+#
+#  Copyright 2025 Yağız Zengin
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+
+#	  http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+set -e
+
+BUILD_64="build_arm64-v8a"
+BUILD_32="build_armeabi-v7a"
+MOD="watchdog_disabler_$(date +%Y-%M-%d).zip"
+THIS="$(basename $0)"
+
+echo() { command echo "[$THIS]: $@"; }
+
+clean()
+{
+	rm -rf $MOD \
+		$PWD/module/system/bin/disable_watchdog \
+		$PWD/module/customize.sh
+	touch $PWD/module/system/bin/placeholder
+}
+
+prepare()
+{
+	if [ ! -d $BUILD_32 ] || [ ! -d $BUILD_64 ]; then
+		echo "Missing artifacts. Please build!"
+		exit 1
+	fi
+
+	if [ ! -f /usr/bin/zip ] && [ ! -f /bin/zip ]; then
+		echo "Please verify your Zip installation!"
+		exit 1
+	fi
+
+	if [ -f $MOD ]; then rm $MOD; fi
+}
+
+mk_customize()
+{
+	if [ $1 -eq 32 ]; then
+		cat <<EOF
+#!/system/bin/sh
+
+if ! getprop ro.product.cpu.abi | grep armeabi-v7a &>/dev/null; then
+	echo "This module is compatible with 32-bit devices. Your device running a 64-bit system!"
+	exit 1
+fi
+EOF
+	elif [ $1 -eq 64 ]; then
+		cat <<EOF
+#!/system/bin/sh
+
+if ! getprop ro.product.cpu.abi | grep arm64-v8a &>/dev/null; then
+	echo "This module is compatible with 64-bit devices. Your device running a 32-bit system!"
+	exit 1
+fi
+EOF
+	else
+		cat <<EOF
+#!/system/bin/sh
+
+echo "This module not generated correctly. Not usable. Re-generate with mkmod.sh. See https://github.com/YZBruh/watchdog_disabler"
+exit 1
+EOF
+	fi
+}
+
+mkzip()
+{
+	local dir
+	if [ $1 -eq 32 ]; then dir=$BUILD_32; else dir=$BUILD_64; fi
+
+	cd module
+	rm -f $PWD/system/bin/placeholder $PWD/system/bin/disable_watchdog
+	mk_customize $1 > $PWD/customize.sh
+	chmod 755 $PWD/customize.sh
+	cp $dir/disable_watchdog $PWD/system/bin
+	zip -rq $MOD *
+	mv $MOD ..
+	cd ..
+
+	echo "Created module package for $1-bit."
+}
+
+if [ $# -eq 0 ]; then
+	command echo "Usage: $0 32|64|clean"
+	exit 1
+fi
+
+case $1 in
+	"32")		prepare; mkzip 32 ;;
+	"64")		prepare; mkzip 64 ;;
+	"clean")	clean ;;
+	*)
+		command echo "$0: Unknown argument: $1"
+		exit 1 ;;
+esac

module/META-INF/com/google/android/update-binary

@@ -0,0 +1,33 @@
+#!/sbin/sh
+
+#################
+# Initialization
+#################
+
+umask 022
+
+# echo before loading util_functions
+ui_print() { echo "$1"; }
+
+require_new_magisk() {
+  ui_print "*******************************"
+  ui_print " Please install Magisk v20.4+! "
+  ui_print "*******************************"
+  exit 1
+}
+
+#########################
+# Load util_functions.sh
+#########################
+
+OUTFD=$2
+ZIPFILE=$3
+
+mount /data 2>/dev/null
+
+[ -f /data/adb/magisk/util_functions.sh ] || require_new_magisk
+. /data/adb/magisk/util_functions.sh
+[ $MAGISK_VER_CODE -lt 20400 ] && require_new_magisk
+
+install_module
+exit 0

module/META-INF/com/google/android/updater-script

@@ -0,0 +1 @@
+#MAGISK

module/module.prop

@@ -0,0 +1,6 @@
+id=watchdog_fix
+name=Watchdog Fix
+author=YZBruh
+version=v1.0
+versionCode=1
+description=Disables watchdog

module/service.sh

@@ -0,0 +1,3 @@
+#!/system/bin/sh
+
+suspend_watchdog &