Start unifying with log monitor

jni/utils/log_monitor.c

@@ -0,0 +1,32 @@
+/* log_monitor.c - New thread to monitor logcat
+ *
+ * Open a new thread to call logcat and get logs with tag "Magisk"
+ * Also, write the logs to a log file for debugging purpose
+ *
+ */
+
+#include <stdio.h>
+#include <pthread.h>
+
+#include "utils.h"
+
+static void *logger_thread(void *args) {
+	rename("/cache/magisk.log", "/cache/last_magisk.log");
+	FILE *logfile = xfopen("/cache/magisk.log", "w");
+	// Disable buffering
+	setbuf(logfile, NULL);
+	// Start logcat
+	FILE *p = popen("logcat -s Magisk", "r");
+	while (fgets(magiskbuf, BUF_SIZE, p)) {
+		fprintf(logfile, "%s", magiskbuf);
+	}
+	return NULL;
+}
+
+/* Start a new thread to monitor logcat and dump to file */
+void monitor_logs() {
+	pthread_t log_monitor;
+	pthread_create(&log_monitor, NULL, logger_thread, NULL);
+	printf("Hello :)\n");
+	pthread_join(log_monitor, NULL);
+}