we are able to parse str to int in the kernel

scripts/yt-block/read-helper.c

@@ -0,0 +1,31 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main(int argc, char **argv) {
+
+  int fd;
+  char c[10];
+  char buffer[10];
+  int pid;
+  //char pid_str[20] = argv[1];
+  //printf("hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii: %s\n", pid_str);
+  printf("pid_str: %s \n", argv[1]);
+  printf("argc: %d \n", argc);
+
+  sscanf(argv[1], "%d", &pid);
+  printf("pid: %d \n", pid);
+
+  fd = open("/dev/unkillable", O_RDWR);
+  if (fd < 0)
+    printf("Error opening /dev/unkillable\n");
+
+  printf("Opened /dev/unkillable\n");
+  read(fd, &c, pid);
+  //printf("We are now unkillable!\n");
+  //read(STDIN_FILENO, buffer, 10);
+  //printf("exiting on user input...\n");
+
+  return 0;
+
+}