Added Level 12.0 ~ 12.1 of KernelSecurity in PwnCollege

PwnCollege/KernelSecurity/Level12.0/write.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+int main(int argc, char* argv[]) {
+    int fd = open("/home/hacker/KernelSecurity/Level12.0/output.txt", O_WRONLY | O_APPEND | O_CREAT, 0644);
+    for (int i = 1; i < argc; i++) {
+      write(fd, argv[i], strlen(argv[i]));
+      write(fd, "\n", 1);
+    }
+    close(fd);
+    return 0;
+}